Patents

Patents that we have developed, concepts we have pioneered before patents were issued, concepts that were patented by others and purchased by our group, concepts that were patented by others and used by our group. All related to the development of industrial shredding machines. Overall these patents outline most of our technology, patents and ideas and concepts. We are Eidal and we are Burda. We started inventing Saturn and SSI.
 

This industry, over the last 50 years, has only four major technology players:

1. The Williams family of St. Louis

2. The Eidal – Burda family of New Mexico and Oregon

3. The Newell family of Texas

4. The Griesedieck family of St Louis

The following patents show this progression:

Shredders for metal and more:
 
 
The patent issued 3283698 shows the first issue of a patent application for a horizontal hammermill for use in car shredding by robert williams of St. Louis, Missouri and the Williams patented crusher and pulverizer company. this is one of three major usa group based in St. Louis that pioneered the crusher industry for many years before this patent issue. The Williams family, the Griesedieck family of American pulverizer and the Gruendler family of Gruendler crusher are the three major groups that pioneered many fields using grinding and pulverizing equipment mainly in the horizontal hammermill range of design.
 
The patent issued 3356016 shows the first issue of a patent application for a vertical hammermill for use in car shredding by roy eidal of Albuquerque, New Mexico designed by the Dravo ship yard in Pittsburg, PA under a design build contract to Eidal international inc. this was the first commercially successful car shredder line in the world using vertical shredder or grinder technology.
 
The patent issued 3360207 shows the first issue of a patent application for a horzontal hammermill for maintenance access by Shelton who was probably connected with those in St Louis and hammermills. This shows the need for easier maintenance and access of hammermills that will be needed for use in car shredding using the eidal shredder which is hidden from site in the patent.
 
The patent issued 3482788 shows the second issue of a patent application for a horizontal hammermill for use in car shredding by Anton Newell of San Antonio, Texas and the Newell family group and was the first commercially successful horizontal shaft hammermill type car shredder line in the world.
 
Eidal family gets the prize for the first commercially successful vertical shredder using the ring grinder design and Newell family gets the grand prize for the first commercially successful horizontal shredder using the hammer grinder design.
 
the Newell shredder is by far the most successful machine for car shredding in the world, and the Newell family group and its companies have supplied over 50% of the worlds mega type car shredder  under the Newell name and in reality all competitive brands today in 2012 all owe their design and existence to the Newell group.
 
There is not a car shredder in the market today that has not been touched by newell. If it’s a mega car shredder in the market place today it must be a newell or it is a newell copy
 
 
Riverside is a foundry group that established itself by providing castings to major shredder groups and the company has supplied castings to the newell and the Eidal shredders for decades. They have also been involved in retrofit of existing machines and improving those machines with designs that use lower wear cost parts. The original Newell design was purchased by the Riverside group in 2002 in a bankruptcy sale of the original Newell assets. The Eidal foundry items were returned to the Burda family after the purchase of the Eidal line from Carborundum in 1983 as there was a non-compete agreement with Eidal and the legal owners of succession which required that the liner patterns and designs be returned to their rightful owners upon notification and this was done in 1984 by the Burda family to consolidate the manufacturing of the Eidal product line.
 
3587985 Eidal, SW factories, Carborundum, Burda

The famous twin barrel Eidal shredder which was eventually copied by the Dravo group that pioneered the use of a twin rotor car shredder. This design is the only design of its kind and there are no other companies in the world to make this design even today since its patent in 1971. The technology and patents were purchased by the Burda family in 1983 from the Pangborn division of Carborundum in Hagerstown, Maryland.

3618866 Robinson, Alter, Eidal, SW factories, Carborundum, Burda

This is a patent that hides the fact that the Eidal shredder was incorporated in a scrap handling and shredding systems at a rail siding and that there was a tie in with the Alter group in St Louis and the Eidal group in New Mexico.

3851829 Dopper Essen, Germany Akros Thyssen Henschell, Eidal, Burda

This is a patent that we feel shows the first attempt by a German group who may be affiliated with the Thyssen Steel group that we feel eventually evolved into the Henschell shredder group and then the Danielli group of italy for a car shredder which is what we call the Akros Henschell shredder. This design uses an identical concept to the Eidal shredder and is often considered the German knockoff of the Eidal Shredder.

3868064 Dravo Coulter, Eidal, SW factories, Carborundum, Burda

This is a patent that we feel shows the first major attempt by the Dravo group to copy or improve on the Eidal design and to enter into the market in a competitive manner against the Eidal design with their own shredder using the core concepts of the Eidal patents. This design uses an identical concept to the Eidal shredder and is well known as the Dravo knockoff of the Eidal shredder. Dravo as mentioned above was originally contracted to design and build the first Eidal vertical shredder by the Eidal international company of New Mexico. This Dravo concept lead the way to the Akros Henschell design knockoff of the Dravo, Eidal shredder which is identical in design today in 2012 to this patent data.

We highly suspect that this is the leading patent or design concept that was copied or utilized by various German group involved in the Akros Henschell design to enter into the auto shredder field with an Eidal Dravo knockoff design.

The Dravo shredder brand and Dravo patents and Dravo shredder designs were assumed by the Burda family when the line was assimilated in 1983 by the Burda group.

3934499 American Pulverizer, Griesedieck family

Scrap shredder technology that evolved with the horizontal shredder of the Newell and Williams design. 

3912175 Medallion, Farmhand, Eidal, Burda

This is one of the first concept machines in the tub grinder industry pioneered by the Jones and the the Medallian groups for farm use and grinding of materials in a hammermill mounted assembly using a rotating tub to grind larger bulky slugs of hay for feeding cattle on large acre open range farms. The line was purchased by the Burda family in 1986 when Medallion Farmhand abandoned the design and product line.

3970255 Carborundum, Foster, Eidal, Burda

This is a Carborundum patent for a top rotor design change in the Eidal shredder or the Eidal grinder to make refuse derived fuel and other materials which was made to assist in the rdf market with the city of chicago and the city of Edmonton, Canada where refuse derived fuel was being produced with the Eidal shredders. This patent and technology was purchased in the sale of the Eidal assets in 1983 by the Burda family of Wilsonville, Oregon.

4029263 Wilkenson, Tollemache, Heil, Eidal, Burda

This was an attempt by the Heil and Tollemache group of England to design a vertical grinder that would compete with the Eidal vertical grinder in the solid waste market. The line was successful from 1975 to 1985 when it was abandoned by the Heil group in the USA. Today it is owned by others in England and is limited in its sales scope by its obscurity in the industry today.

Today, the Heil line of Tollemache shredders are serviced by the Eidal-Burda group of companies as they are basically abandoned by the former suppliers of these machines.

4343438 American Pulverizer, Eidal-Burda

This is a patent on a grinder ring similar to that used in the Eidal shredder and outlines a different geometry to handle better wear.

5388774 Eidal, Dravo, Zizzo, Eidal-Burda

The famous Zizzo patent which was derived from the Dravo designs and the Eidal designs with the last double rotor eidal shredder to be placed in Kenosha, Wisconsin in 1993 by Dan Zizzo of Zizzo scrap metal. Daniel Zizzo was convinced that the Eidal shredder and the Dravo shredder was the best machine in the world to shred scrap metal in the highest density of 90 pounds per cubic foot. This patent is actually a collaboration of Dan Burda and Dan Zizzo to take the rotor of the Eidal and make it more effective by making it a double rotor. The product line was never taken to market by Dan Zizzo and was purchased in 2006 by the Burda family to consolidate the patents and technology under their Eidal group.

Ideas of Dan Burda of Eidal and the Burda family in regard to designs for vertical shredders:

Since 1983 Dan Burda has been the principal design innovator in the eidal type of vertical shredder. It takes time and effort and money to patent concepts and ideas today and we feel it is better to just build and make claims later to concepts and ideas that have been built. What we have built for the eidal vertical shredder are too numerous to mention but some of these are the following:

- Christmas tree rotor
- Barrel rotor
- Ice cream cone rotor

- Ice cream cone tub
- Barrel tub
- Christmas tree tub

The combinations of these designs gives you a matrix of at least 9 major designs for rotor and tub combinations of the vertical shredder.

The use of fixed and swing type hammers and fixed and swing flails is obvious to the design. The use of different knocker assemblies is also obvious. The use of explosion venting is obvious. The use of eject doors partial or whole on the tub is also obvious. The use of discharge methods and assemblies is also obvious. The use of different rpm and hp configurations is also obvious. Slow, medium and fast speed are good considerations for various materials and applications. We feel that what has been invented in vertical shredders has been invented or built.

 
Shear type industrial shredders:
 
The second group are patents and ideas for shear type shredders. The major pioneering families in this field are only two groups. The Burda family of Wilsonville, Oregon and the Kaczmarek family of Chicago.

85067 Burbank, Saturn, Eidal-Burda

The patent issued as 85067 was cited by the Culbertson legal patent team in research documents as being the real first patent and technology in the application of a dual shaft shear type shredder in 1858, and although it does not show the true solid coaxing cutter design of modern shear shredders this is probably the basis for all shear type shredders, or the first patented document showing the technology on record that we have found.

2753908 Anderson, Saturn, Eidal-Burda

The patent issued as 2753908 shows the shear shredder concept as a base line for the use of an outer rounded cutter edge and multi hook blade in the middle of shearing edges which has been used by many in this industry including saturn and Tri-c and even Aljon of Iowa.

 
The concept of a shear shredder for paper shredding at the office level by your desk but the concept is the same for all shear shredders large or small.
 
 
This is what we call the Bloapco shredder or the Rip Steel shredder depending on the design.
 
 
This is what we also call the Bloapco shredder or the rip steel shredder
 
 
This is the first single shaft shredder in the field in the United States invented by John Brewer of Salt Lake City, Utah.
 
 
The patent issued as 3664592 is cited as the Schweigert patent but is also referred to in consulting documents as the Rossler patent, cited specifically by Columbus McKinnon as being the first shear type shredder that was made commercially available to the industry. This is a false claim as we have not found nor have we ever encounter this brand in the industry and if it was commercially viable during this time frame it has to be tied to the Lindemann or Moco line of shredders in Germany as available at the same time frame as the Saturn and Shred-Pax shredders. There was no commercial sales of these brands in the United States during this time period, and it appears that there is yet to be any records of this brand or patent or its commercial promotion in the USA or Germany.
 
 
One more of the Brewer patents for tire shredders.
 
 
One more of the Brewer patents for tire shredders where only three machines were made over the entire history of the Garbalizer line which is the commercial name brand of this technology in the USA.
 
 
This is the base design patent and base shredder design copied or used by the Shred-Pax group of chicago for many years and forms the basis of their shredder design of the AZ series of shredders.
 

This machine was designed to explore low cost shredders for service stations in the USA by the Coats Hennessey group who provided equipment for changing tires and balancing tires in service stations in the usa and was abandoned when discovery that service stations were not able to afford the purchase of a $10,000.00 machine.

The patent issued as 3868062 is one of the first hydraulic driven patents for shredders that is really the true benchmark for shear type shredders and the method to drive them hydraulically.

The reason for this method of drive arrangement was based on the fact that hydraulic driven shredders could reverse on materials much faster and more regularly than electric driven shredders. The industry has fought over issues of which drive is better and the real fact is that both drive arrangements in shear type shredders are often used for the same application but in some instances an electric drive or a hydraulic drive is a better selection. Only time will show which drive is better and this debate is one that we think is silly and not worthy of the time taken to explain the bias in the industry that some groups take to promote their product line. It’s a plain fact, and one that we document for the world to know.

This product line and patents were purchased for $10,000.00 by the Burda family group in 1993 to fulfill the need of their product lines.

The patent issued as 3880361 is often cited as the first electric driven shredder patent but in reality it is not as there is a prior Schwarz patent. But it is one of the design concepts in the field that drove commercially viable shredder brands, the Shredpax and the Saturn shredder brands. This patent was issued from Germany to Al Kaczmarek and his family of Chicago and used as the basis of the product lines that they promoted for over 35 years until they were assimilated into the Burda brands in 2008 on the death of the founder of Shredpax, Al Kaczmarek.

The base issue of this patent is to show the design of the Schwarz design that was built in Germany and licensed to the Kaczmarek family of Chicago, Illinois.

The Shred-Tech and the shred it and the Brentwood and a dozen other brand lines today are all direct designs of this product line patents.

 
A tire cutter mounted on a truck which was not a novel idea or design as it had already been accomplished by the Saturn and the Shred-Pax groups.
 
 
This is the original lineage of the Schriptek group and sets the stage for this design for the next 30 years.
 
 
 
One more Brewer, Garbalizer patent that was assimilated into the Burda family group of brands in 2008.
 
 
The patent issued 3981455 for a single shaft ripper similar to the Brewer patent was used as a pallet ripper for a low cost alternative to pallet size reduction. This product line was assimilated into the Burda family group of brands.

4009838 Tashman, Eidal, Burda

This patent shows the application of a shear type shredder for waste processing in a mini version for volume reduction of material.

The Saturn manufacturing group had been building shredders since 1972. The patent issued 4034918 which probably should not have been issued as it was known technology of its day, per Vernon Burda to his son in 1977. This patent shows an extension of the shear type shredder with a hydraulic drive arrangement and is often cited as the first issue of a patent application for a hydraulic driven shear type shredder by the Burda family under the Culbertson patent name, with Mike Culbertson being the son in law of Vern Burda, who was actually given the honorary title to this design patent with Mr. James Keller, who worked at a local hydraulic supply group in Portland, Oregon. This design was based on the Cunningham, and the Schwarz machines which was imported by the Al Kaczmarek of the TEG group of Chicago and his family with the Kleco group of Cleveland and Shred Pax group of chicago. This design was vastly pioneered and improved under the contract manufacturing of the Saturn manufacturing, Burda family group with the assistance of their friends at Salem equipment in Salem, Oregon and Lew Judson, of the Judson family group, who owned Salem Equipment. Bob Gasser was the design engineer at Saturn and a friend of the Burda family that participated in the design of the Saturn shredder with inputs from a wide range people from 1972 to date.

The Saturn shredder was the first USA made, commercially successful, hydraulic driven shear type shredder group in the world and one of only three major groups in the world, Shredpax and Lindemann being the second and third world leading shredder groups at that time. All three product lines were invented in about the 1972 at a time frame when pioneering work was the only way to invent a product line in the shear type shredder field. Both electric driven and then hydraulic driven shear type shredders were pioneered during this time frame.

The hydraulic design was protected by patents and owned by the Burda family of Wilsonville, Oregon.

The electric driven design was not protected by patents and was made by Saturn and Shred Pax almost on an exclusive basis for worldwide distribution.

Vernon Burda and Dan Burda were the principals at the Saturn manufacturing company with the rest of the family owning shares in the company. Dan Burda joined the family business in 1977 and is the second generational leader of the Burda and Eidal group of companies.

 
This is a patent showing the reverse rotation design common to Quad Shaft shear type shredders that can also be used on dual shaft shear type shredders to allow them to grab in reverse directions and therefore to shred in reverse directions. This patent in combination with the Eidal shear cleaning finger allows for an improved performance of shear type shredders.
 
 
This is a patent that shows the concept of popping a tire using a bevel edge rather than a shearing edge which is a design used in tire cutters to pop a tire into pieces without shearing.
 
 
This is one of the first patents on a trommel screen around a shear type shredder to act as a recirculation system to provide a compact means to make tire derived fuel.
 
 
This is a further patent on a trommel screen and feeder around a shear type shredder with a replaceable hook on the cutter.
 
 
This invention is an attempt to allow larger space in the cleaning finger design to trap un-shreddable materials in a shear shredder. This product line was assimilated into the Burda family group of brands in 2008.
 
 
This concept patent is an attempt to use a slip belt and torque cushion assembly in the drive of a shear type shredder but further advances in the industry for heavier gearbox designs did not require this type of drive assembly design.
 
 
Derivation of the Holman patent listed above as Mike Rouse, Mike Saylors and Mike Bungay were all involved with the waste recovery group in Portland, Oregon and Houston, Texas in the shredding of tires to a tire derived fuel and this is just an extension of the technology originated with the Holman patent.
 

This is a knockoff of the Saturn shredder and the centromorgardshammer shredder buy the Dallas, Texas triple s dynamics group owned by the Sullivan family in an attempt to enter into the shear type shredder field.

Only a few of these machines were built, North Slope Borough in Dead Horse, Alaska being the first and the major concept in the design was to eject un-shreddables from the shredding chamber that was accomplished by eject doors on the hoppers or vertical removal from the hopper. The concept was not unique but was novel at this time for use in a large shear type shredder.

 
Derivation of the Holman patent listed above as Mike Rouse, Mike Saylors and Mike Bungay were all involved with the waste recovery group in Portland, Oregon and Houston, Texas in the shredding of tires to a tire derived fuel and this is just an extension of the technology originated with the Holman patent.
 
 
One of the Dan Burda patents and concepts for sensing of a shear type shredder and the reversal of the shredder to unjam the machine.
 
 
Derivation of the Holman patent listed above as Mike Rouse, Mike Saylors and Mike Bungay were all involved with the waste recovery group in Portland, Oregon and Houston, Texas in the shredding of tires to a tire derived fuel and this is just an extension of the technology originated with the Holman patent.
 
 
Derivation of the Holman patent listed above as the Barclay group were involved with the manufacture of the shredders used by waste recovery and their operations in the USA with Mike Rouse, Mike Saylors and Mike Bungay who were all involved with the waste recovery group in Portland, Oregon and Houston, Texas in the shredding of tires to a tire derived fuel and this is just an extension of the technology originated with the Holman patent.
 

This is a patent that is based on patent filings that were made by Dan Burda in 1982 for sensing of shredder jams and control of the shredder to reverse the machines to unjam the shredders.

It should not have been granted as it was designed by Dan Burda for the Martin Marietta SSI project that Dan Burda bid and submitted with the eventual build of the machine in 1984 and the design concept was first invented by Dan Burda the original owner and inventor of the SSI shredder line that was eventually given to Tom Garnier and Warren Rosenfeld of Portland, Oregon due to a dispute over leadership of the company. Tom Garnier was the boyfriend of Sue Burda, and employed as a carpenter in Portland, Oregon, and received his first employment in shredders and training from the Burda family of the Saturn shredder group from Dan Burda and Vernon Burda.

 
Derivation of the Holman patent listed above as the Barclay group were involved with the manufacture of the shredders used by waste recovery and their operations in the USA with Mike Rouse, Mike Saylors and Mike Bungay who were all involved with the waste recovery group in Portland, Oregon and Houston, Texas in the shredding of tires to a tire derived fuel and this is just an extension of the technology originated with the Holman patent.
 
 
The Holman patent and the Schrpitek group technology was stolen buy the CM group of NY for their Sarasota plant and became the CM shredder brand.
 
 
One of the Dan Burda patents and concepts for sensing of a shear type shredder and the reversal of the shredder to unjam the machine.
 
 
Once again this is a patent that should not have been issued as this was known technology in shear type shredders to force materials into the cutting chamber and was built buy the Saturn shredder group from the time frame of 1972 to 1980 and continued well beyond that period with other shredder lines such as the Eidal shear type shredder and the Triple S Dynamics and Williams shear type shredder.
 
 
Inventor and huckster selling MRF plants to municipal markets with the use of a shear type shredder.
 
 
Patent for a ribbed cutter that is trademark of the Eidal and Burda family brands today.
 
 
Clyde Lamar was a machine shop owner in California that became involved with the Holman patent and the Barclay shredder and the Mitts and Merrill shredder and invented his own brand that was promoted and lacked success in the field with only a dozen machines made over the last 35 years.
 
 
The patent should not have been granted as it was prior art used by Saturn with a reciprocating grate under the shear type shredder discharge and was done in spite by Bob Williams to rile the feathers of the Saturn shredder owners.
 
 

This patent should not have been granted as it was prior art used by the Saturn shredder group in 1980 with container recovery of Nasshua, New Hampshire

The patent should not have been granted and was done to promote the ego of Tom Garnier of SSI shredding systems inc.

 
This patent outlines the base concept for a G12 Rasper to take tires to a wire free form and is one of the early versions of this type of machine in what we call a single shaft rotor design. The evolution of many designs including the Eidal Rasper, the Eldan Rasper and the CM Rasper were in this same class of machines.
 
 
This is a patent showing the slabbing of rubber prior to introduction into a shear type shredder for further processing.
 
 
Portable shredder that was designed by Dan Burda and sold to Paul Merklinger and eventually built buy the Wisconsin machining group in Milwaukee, Wisconsin.
 
Tire debeaders and Tire cutters:
 
 
The Farrell tire cutter was built by Charlie Rose and was purchased in 1985 by Vernon Burda for $10,000.00 as only one unit was made for BFI in Houston, Texas and it was not a successful product line to cut tires when the shear shredder was the better method of choice. This line was assimilated into the Burda product line family group in 1985.
 
 
The Farrell tire cutter was built by Charlie Rose and was purchased in 1985 by Vernon Burda for $10,000.00 as only one unit was made for BFI in Houston, Texas and it was not a successful product line to cut tires when the shear shredder was the better method of choice. This line was assimilated into the Burda product line family group in 1985.
 
 
This line was invented by Ralph Voigts of Streator, Illinois and was the first successful tire bead extractor or puller invented and was first made for waste recovery of Marseilles, Illinois facility to remove beads in tires prior to shredding.

It was not commercially successful as shredders did not need to have tire beads removed prior to shredding.

The product line was assimilated into the Burda products on the death of Ralph Voigts in 2008.

 
Wood Chippers: 
 
 
 

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