Patents Represented by Attorney Norman P. Friederichs
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Patent number: 4299051Abstract: Disclosed is a demountable wheel suitable for use on toy vehicles. The demountable wheel includes a first member that is rotatably mounted in a permanent or semi-permanent arrangement on an axle. The wheel has a second member including a tire which is demountably supported on the first member.Type: GrantFiled: September 9, 1977Date of Patent: November 10, 1981Assignee: Tonka CorporationInventors: Ronald R. Pauly, Thomas W. Good, John D. Hastings
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Patent number: 4295244Abstract: A scrubber is disclosed including an applicator for applying a cleaning solution, a rotary brush for working such solution on the soiled surface and a pick up section for removing the cleaning solution and suspended soilage from the surface being scrubbed. The scrubber includes a dirty solution chamber and a clean solution chamber. A separator is provided between such chambers to separate the dirty water into a sludge portion which is returned to the dirty water chamber and a clean solution portion which is fed into the second chamber.Type: GrantFiled: November 19, 1979Date of Patent: October 20, 1981Assignee: Tennant CompanyInventors: Ferdinand J. Herpers, Harley E. Kroll, Alfred D. Carlson, Paul D. Dodge
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Patent number: 4295274Abstract: A scarifying tool is disclosed suitable for use in conjunction with disc floor maintenance machines. The scarifying tool includes a support plate with a plurality of resilient or flexible members attached thereto. The flexible member may be lightweight spring-steel strap material one end of which is secured to a disc plate. A cutter is then mounted on the strap at a point spaced from the disc support.Type: GrantFiled: July 27, 1978Date of Patent: October 20, 1981Assignee: Tennant CompanyInventors: Charles W. Bricher, Ferdinand J. Herpers
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Patent number: 4294485Abstract: A boot is provided which includes a resiliently deformable frame shaped to the respective contours of the rear window aperture of the truck cab and front window aperture in the forward wall of the camper. The opposite end walls of the boot frame terminate in portions adapted for attachment to the cab an camper. One of said portions includes magnetic attachment means.Type: GrantFiled: February 2, 1979Date of Patent: October 13, 1981Inventor: Thomas E. Engelhard
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Patent number: 4224743Abstract: A machine for dehydrating food, as an aid toward preservation of food for extended periods of time. Intake air may be obtained from either the exterior of the machine or a combination of exterior and recycled air. Intake air is electrically heated and pressurized in a plenum chamber by a fan. The pressurized and heated air is released in a uniform laminar flow through a set of small openings, then along horizontally disposed shelves containing the food to be dried. The air is then selectively discharged into the atmosphere or a portion thereof is recycled and combined with new intake air and again passed over the food to be dehydrated. The percentage of recycled air is selectively variable over a wide range. Removable frames support either solid sheets or screens having mesh openings of desired sizes which support the food to be dried. The choice of a solid sheet or the mesh size depends upon the type of food to be dried.Type: GrantFiled: June 19, 1978Date of Patent: September 30, 1980Assignee: Alternative Pioneering Systems, Inc.Inventors: Chad S. Erickson, David A. Dornbush
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Patent number: 4222605Abstract: A boot is provided which includes a resiliently deformable frame shaped to the respective contours of the rear window aperture of the truck cab and front window aperture in the forward wall of the camper. The opposite end walls of the boot frame terminate in respective continuous thickened lips which respectively snap-fit into corresponding channels provided in the cab and camper window frame. The thickened lips each include a flange-like projection which when the boot is installed provides a trough for draining away water.Type: GrantFiled: July 3, 1978Date of Patent: September 16, 1980Inventor: Thomas E. Engelhard
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Patent number: 4213803Abstract: Disclosed is the addition of at least two elements of Nb, V, Ta and Zr to the ternary alloy of R (rare earth)-Co-Cu for permanent magnet materials, to thereby provide the permanent magnets with increased coercive force, residual magnetization and energy product. The additional elements enable employment of such Cu and Fe contents of the alloy as less than 10% and more than 6%, respectively. These percentages were avoided in the prior art to prevent the reduction of Br and Hc, respectively.Type: GrantFiled: February 8, 1977Date of Patent: July 22, 1980Assignee: TDK Electronics Company LimitedInventors: Tetsuhito Yoneyama, Shiro Tomizawa, Tetsuo Hori, Teruhiko Ojima
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Patent number: 4210471Abstract: Disclosed is the addition of Nb, V, Ta or Zr to the ternary alloy of R (rare earth)-Co-Cu for permanent magnet materials, to thereby provide the permanent magnets with increased coercive force, residual magnetization and energy product. The additional elements enables employment of such Cu and Fe contents of the alloy as less than 10% and more than 6%, respectively. These percentages were avoided in the prior art to prevent the reduction of Br and Hc, respectively.Type: GrantFiled: February 8, 1977Date of Patent: July 1, 1980Assignee: TDK Electronics, Co., Ltd.Inventors: Tetsuhito Yoneyama, Tetsuo Hori, Teruhiko Ojima
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Patent number: 4206817Abstract: Seed sowing equipment is disclosed including a pair of cooperating disc blades mounted for rotation on an axle. A scraper is provided for cooperation with each of such blades for preventing the accumulation of soil on the inward side of such disc blades. The scraper includes a ring portion and a plurality of radially inwardly extending spokes terminating in a hub portion.Type: GrantFiled: September 18, 1978Date of Patent: June 10, 1980Inventor: Galen Bowerman
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Patent number: 4206530Abstract: A powered sweeping machine is disclosed, particularly suitable for efficiently removing light and heavy weight litter from surfaces such as parking lots, warehouse floors and the like. The machine includes a main frame carrying a hopper and a powered brush. The brush operates through an opening in the lower side of a brush housing. The hopper is separated into a debris receiving compartment and a filter compartment. An air fan and an associated duct recirculates air from the far end of the debris compartment to a zone adjacent the brush. This nonfiltered air is discharged into the brush housing and again moved through the debris compartment to aid in moving debris to the far end of the debris compartment. A fan is provided for withdrawing a portion of the air from the filter compartment and discharging the air to the ambient atmosphere.Type: GrantFiled: January 30, 1978Date of Patent: June 10, 1980Assignee: Tennant CompanyInventors: Harley E. Kroll, Donald L. Thomsen
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Patent number: 4194263Abstract: A scrubber is disclosed including an applicator for applying a cleaning solution, a rotary brush for working such solution on the soiled surface and a pick up section for removing the cleaning solution and suspended soilage from the surface being scrubbed. The scrubber includes a dirty solution chamber and a clean solution chamber. A separator is provided between such chambers to separate the dirty water into a sludge portion which is returned to the dirty water chamber and a clean solution portion which is fed into the second chamber.Type: GrantFiled: June 19, 1978Date of Patent: March 25, 1980Assignee: Tennant CompanyInventors: Ferdinand J. Herpers, Harley E. Kroll, Alfred D. Carlson, Paul D. Dodge
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Patent number: 4193639Abstract: A wheel suitable for use on toy vehicles. The wheel has a tire which is mountable and demountable with respect to such toy vehicle. The wheel includes a first member that is rotatably mounted in a permanent or semi-permanent arrangement on an axle. The wheel has a second member including a tire which is demountably supported on the first member. The first member has a locking mechanism which cooperates with a portion of the second member to prevent unintended rotation of the first member with respect to the second member.Type: GrantFiled: April 21, 1978Date of Patent: March 18, 1980Assignee: Tonka CorporationInventors: Ronald R. Pauly, Thomas W. Good, John D. Hastings, Kevin D. Ryan
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Patent number: 4192081Abstract: A machine for dehydrating food, as an aid toward preservation of food for extended periods of time. Intake air may be obtained from either the exterior of the machine or a combination of exterior and recycled air. Intake air is electrically heated and pressurized in a plenum chamber by a fan. The pressurized and heated air is released in a uniform laminer flow through a set of small openings, thence along horizontally disposed shelves containing the food to be dried. The air is then selectively discharged into the atmosphere or a portion thereof is recycled and combined with new intake air and again passed over the food to be dehydrated. The percentage of recycled air is selectively variable over a wide range. Removable frames support either solid sheets or screens having mesh openings of desired sizes which support the food to be dried. The choice of a solid sheet or the mesh size depends upon the type of food to be dried.Type: GrantFiled: June 15, 1977Date of Patent: March 11, 1980Assignee: Alternative Pioneering Systems, Inc.Inventors: Chad S. Erickson, David A. Dornbush
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Patent number: 4190965Abstract: A cylindrically shaped food dehydrator is disclosed including a base member, a plurality of stackable trays and a top member. The base member has a blower for moving air through the trays. The air flow in the trays moves from the circumference of the tray to the center of the tray.Type: GrantFiled: January 15, 1979Date of Patent: March 4, 1980Assignee: Alternative Pioneering Systems, Inc.Inventor: Chad S. Erickson
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Patent number: 4187636Abstract: The toy camping trailer includes a trailer box supported on a pair of wheels. The trailer has a two-piece pivotal top which may be collapsed to a travel position or raised to a camping use position. One top piece may include an open zone to permit access to the interior of the trailer while in the camping use position.Type: GrantFiled: September 9, 1977Date of Patent: February 12, 1980Assignee: Tonka CorporationInventor: Ronald R. Pauly
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Patent number: 4173840Abstract: A toy fire engine is disclosed including a body, wheel and axle assembly, aerial ladder, ladder support and loose ladder. The ladder support may include a turret for pivotal support of the ladder about a vertical axis. The fire engine body may include a ladder carrier which limits sideward movement and linear movement of a loose ladder when disposed in the carrier.Type: GrantFiled: May 31, 1977Date of Patent: November 13, 1979Assignee: Tonka CorporationInventors: Curtis H. Fahrendorf, Delmar D. Berckhan
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Patent number: 4173095Abstract: A toy vehicle is disclosed which may resemble a jeep. The toy vehicle may include a chassis, an inside compartment, wheels and a top. The inside compartment may have seats, wall panels and a floor. The compartment may serve to enclose various raw edges of the chassis. The top may include support posts which rest on the chassis.Type: GrantFiled: May 9, 1977Date of Patent: November 6, 1979Assignee: Tonka CorporationInventors: Ronald R. Pauly, Royce D. Rumsey
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Patent number: D255137Type: GrantFiled: September 29, 1977Date of Patent: May 27, 1980Inventor: John J. Bowen
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Patent number: D257845Type: GrantFiled: May 12, 1978Date of Patent: January 13, 1981Assignee: Tennant CompanyInventors: Ralph C. Peabody, Robert D. Hennessey
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Patent number: D258222Type: GrantFiled: January 23, 1978Date of Patent: February 10, 1981Assignee: Tonka CorporationInventors: Royce D. Rumsey, Ronald R. Pauly