Patents Assigned to Seal Incorporated
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Patent number: 6397462Abstract: A guide (30) for surrounding and sealing a rod (26) in the end of a hydraulic cylinder (12) including a piston (24) slidably disposed in the cylinder (12) and attached to the end of the rod (26) and a method for manufacturing the guide (30). The guide (30) includes an inner guide bore (38) with dovetail shaped channels (40) extending annularly about the guide bore (38) and an organic polymeric bearing material (42) disposed in the guide bore (38) in mechanically interlocking engagement with the dovetail channel in the radial direction to exert a radial retaining force from the channel (40) to the bearing material (42) to establish a force fit in the radial direction between the channel (40) and the bearing material (42). placing the guide (30) in a mold (44, 46) defining a cylindrical cavity extending about the guide bore (38) and between the end faces (32) of the guide (30).Type: GrantFiled: July 24, 1997Date of Patent: June 4, 2002Assignee: Dynamic Seals IncorporatedInventors: Eddy R. Lanteigne, Dwain L. Chalker, Terrance W. Rudd, Roger R. Schumacher
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Patent number: 5782162Abstract: A guide (30) for surrounding and sealing a rod (26) in the end of a hydraulic cylinder (12) including a piston (24) slidably disposed in the cylinder (12) and attached to the end of the rod (26) and a method for manufacturing the guide (30). The guide (30) includes an inner guide bore (38) with dovetail shaped channels (40) extending annularly about the guide bore (38) and an organic polymeric bearing material (42) disposed in the guide bore (38) in mechanically interlocking engagement with the dovetail channel in the radial direction to exert a radial retaining force from the channel (40) to the bearing material (42) to establish a force fit in the radial direction between the channel (40) and the bearing material (42) placing the guide (30) in a mold (44, 46) defining a cylindrical cavity extending about the guide bore (38) and between the end faces (32) of the guide (30).Type: GrantFiled: June 12, 1996Date of Patent: July 21, 1998Assignee: Dynamic Seals IncorporatedInventors: Eddy R. Lanteigne, Dwain L. Chalker, Terrance W. Rudd, Roger R. Schumacher
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Patent number: 4188254Abstract: An improved form of vacuum press is disclosed for use in laminating transparent protective film to photographs and the like and for dry-mounting the same to suitable substrates or backing materials.The press comprises a rigid work support assembly for supporting a workpiece, and a cover assembly hinged to the work support assembly for movement into and out of engagement with the top of the work support assembly, with the cover assembly comprising a frame, a flexible, air-impermeable membrane extending across an interior opening in the frame and attached thereto at its edges, and sealing means for forming an airtight chamberbetween the work support assembly supporting the workpiece and the cover assembly when the cover assembly is in engagement with the top of the work support assembly.Type: GrantFiled: July 24, 1978Date of Patent: February 12, 1980Assignee: Seal IncorporatedInventor: Lyle D. Hemperly, Jr.
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Patent number: 4145216Abstract: A dry system for forming and transferring images is provided. The system comprises a photoactive component comprising a tacky photohardenable layer on a selected carrier sheet and a transfer component comprising a frangible color layer on a selected carrier sheet. The two components are disposed with their photohardenable and color layers in air-free contact with one another and then subjected to irradiation with actinic radiation in accordance with a selected image pattern so as to cause selected portions of the photohardenable layer to harden and fuse to confronting portions of the color layer. Then the two components are separated whereby the fused portions of the color layer are separated from its carrier sheet and transferred to the photoactive component. Thereafter the color layer remaining on the transferable component is coated with a pressure-sensitive adhesive.Type: GrantFiled: September 30, 1977Date of Patent: March 20, 1979Assignee: Seal IncorporatedInventors: Richard E. Merrill, Theodore H. Krueger
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Patent number: 4111255Abstract: The invention provides a new apparatus and method for forming thin metal parts of simple or intricate shape and depositing the same onto selected receiving surfaces. The parts may be in the form of wire leads which are bonded to the receiving surfaces. The invention consists in providing a hollow tool which includes a porous body with an exposed surface having a selected two-dimensional or three-dimensional geometry, immersing the surface of the porous body in a melt of a metal which will not wet the surface, pulling the tool away from the metal while applying a suction force to the porous body so that a portion of the melt will adhere to the surface, bringing the tool into contact with a receiving surface, and cooling the surface and removing the suction force so that the adhering portion of the melt will be deposited as a solid or partially solidified body onto the receiving surface.Type: GrantFiled: March 21, 1977Date of Patent: September 5, 1978Assignee: Seal IncorporatedInventors: Theodore H. Krueger, Jr., Robert Eller, John O'Brien, William L. Robbins
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Patent number: 4091264Abstract: A heat transfer roller embodying a heat pipe is disclosed. The heat pipe is mounted on a shaft, and the shaft is adapted for rotation on its axis.Type: GrantFiled: August 13, 1976Date of Patent: May 23, 1978Assignee: Seal IncorporatedInventor: Domenico S. Sarcia
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Patent number: 4081282Abstract: A dry system for forming and transferring images is provided. The system comprises a photoactive component comprising a tacky photohardenable layer on a selected carrier sheet and a transfer component comprising a frangible color layer on a selected carrier sheet. The two components are disposed with their photohardenable and color layers in air-free contact with one another and then subjected to irradiation with actinic radiation in accordance with a selected image pattern so as to cause selected portions of the photohardenable layer to harden and fuse to confronting portions of the color layer. Then the two components are separated whereby the fused portions of the color layer are separated from its carrier sheet and transferred to the photoactive component. Thereafter the color layer remaining on the transferable component is coated with a pressure-sensitive adhesive.Type: GrantFiled: November 3, 1975Date of Patent: March 28, 1978Assignee: Seal IncorporatedInventors: Richard E. Merrill, Theodore H. Krueger
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Patent number: 4078962Abstract: The present invention constitutes a vacuum press for mounting and laminating graphic art objects such as photographs and the like. The press utilizes two pliable airtight membranes, a first membrane attached to and supported by a base frame and a second membrane positioned over the base frame, arranged to form an airtight chamber containing the workpiece. The second membrane is specifically chosen so as to have a contour-defining capability. Thus when the chamber is evacuated, exterior atmospheric pressure will collapse the chamber and compress the workpiece between the two membranes, and at the same time, the second membranes will image the upper surface contour of the workpiece so as to reveal any undesirable surface irregularities such as wrinkles or bubbles which might exist in the workpiece. This indication gives the operator an opportunity to remove the irregularities before mounting or laminating occurs.Type: GrantFiled: November 5, 1976Date of Patent: March 14, 1978Assignee: Seal IncorporatedInventor: Theodore H. Krueger
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Patent number: 4067093Abstract: A piston and cylinder assembly and a method for manufacturing the piston assembly. The piston assembly includes a circular integral piston. A glass-filled plastic bearing material is disposed completely annularly about the piston and extends entirely between end faces of the piston. The plastic bearing material provides a bearing surface for sliding engagement with an inner surface of a cylinder of the cylinder assembly. An annular groove extends through the plastic bearing material and into the piston between the end faces. The piston includes a central bore which is concentric with the groove and the outer circumference of the plastic bearing material. The method for manufacturing the piston assembly includes the step of disposing the piston on a positioning pin which extends into the central bore and disposing the piston in an enclosed mold cavity which is defined by a mold.Type: GrantFiled: January 7, 1977Date of Patent: January 10, 1978Assignee: Dynamic Seals IncorporatedInventors: Roger R. Schumacher, William Olson
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Patent number: 3951724Abstract: A vacuum press adapted for laminating transparent protective film to photographs and the like and for dry-mounting the same to suitable substrates or backing materials. The press comprises a base characterized by a flexible air-impermeable wall which supports the work sheets and a cover assembly hinged to the base. The cover assembly includes a platen which when brought into engagement with the base cooperates with the flexible wall to form a reducible work-receiving chamber. Means are provided for heating the platen and indirectly the work and for evacuating the work-receiving chamber to cause the work to be laminated under heat and pressure.Type: GrantFiled: October 21, 1974Date of Patent: April 20, 1976Assignee: Seal IncorporatedInventors: Terence C. Johnson, Malcolm E. Reed
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Patent number: 3950210Abstract: An improvement in vacuum presses for mounting and laminating graphic arts objects such as photographs and the like, the improvement consisting of providing a platen assembly comprising a flexible metal platen that is supported only at its edges and is engaged and heated by a flexible heater unit.Type: GrantFiled: April 10, 1973Date of Patent: April 13, 1976Assignee: Seal IncorporatedInventors: David A. Gibbs, Domenico S. Sarcia
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Patent number: 3943031Abstract: The invention is a simplified roller-type apparatus for laminating articles in sheet form with transparent plastic laminating film. It comprises a heating station for heating the work and a pair of pressure rolls for bonding the film to one or both sides of each article. The heating station comprises a pair of vertically opposed flat plates that are separable to permit the work to be inserted between them, and means for heating the plates so that they act as sources of heat for activating the adhesive layer of the laminating film. In the preferred embodiment, the lower plate is fixed and the upper plate is mounted for vertical movement relative to the lower plate. The two plates also act as guides for directing the heated work into the nip formed by the pressure rolls.Type: GrantFiled: May 14, 1973Date of Patent: March 9, 1976Assignee: Seal IncorporatedInventors: Theodore H. Krueger, David B. Spaulding
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Patent number: D256126Type: GrantFiled: July 28, 1978Date of Patent: July 29, 1980Assignee: Seal IncorporatedInventors: Lyle D. Hemperly, Jr., Larry C. Ayer, David H. Trout