Patents by Inventor Frank D. Nimmo
Frank D. Nimmo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6702091Abstract: An elongated cylindrical roller tube is rotatably supported between frame members by a pair of bearing units secured to opposite end portions of the tube. Each bearing unit includes a tubular shaft supporting a hexagonal stub axle for axial movement between an outwardly projecting position engaging a frame member and an inwardly retracted position against the bias of a spring member. An anti-friction bearing is mounted on the tubular shaft and is retained within the roller tube by an annular adapter. An annular dust cover projects radially outwardly from the tubular shaft to protect the bearing. Some parts are molded of an electrically conductive plastics material, and each hexagonal stub axle has a slightly resilient outer surface and a tapered and twisted outer tip portion. The stub axles are reinforced by axially extending core pins or by opposite end portions of a cylindrical connecting rod.Type: GrantFiled: September 18, 2002Date of Patent: March 9, 2004Assignee: Rolcon, Inc.Inventors: Frank D. Nimmo, William R. Merz, W. Howard Newton
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Patent number: 6523665Abstract: A curved section of a roller conveyor includes a plurality of conveyor roller assemblies each formed by an elongated rigid cylindrical base tube with a bearing and stub axle unit mounted on each end portion of the base tube. The stub axle is spring biased and has a slightly resilient outer surface and a metal core pin. A tapered tubular sleeve of plastics material is mounted on an outer end portion of the base tube with the large end of the sleeve adjacent the outer end of the base tube. Preferably, the sleeve extends axially less than 50% of the length of the base tube and has a press-fit on the base tube with a radial pin locking the sleeve to the base tube.Type: GrantFiled: August 22, 2001Date of Patent: February 25, 2003Assignee: Rolcon, Inc.Inventors: Frank D. Nimmo, William R. Merz, W. Howard Newton
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Publication number: 20030015394Abstract: An elongated cylindrical roller tube is rotatably supported between frame members by a pair of bearing units secured to opposite end portions of the tube. Each bearing unit includes a tubular shaft supporting a hexagonal stub axle for axial movement between an outwardly projecting position engaging a frame member and an inwardly retracted position against the bias of a spring member. An anti-friction bearing is mounted on the tubular shaft and is retained within the roller tube by an annular adapter. An annular dust cover projects radially outwardly from the tubular shaft to protect the bearing. Some parts are molded of an electrically conductive plastics material, and each hexagonal stub axle has a slightly resilient outer surface and a tapered and twisted outer tip portion. The stub axles are reinforced by axially extending core pins or by opposite end portions of a cylindrical connecting rod.Type: ApplicationFiled: September 18, 2002Publication date: January 23, 2003Applicant: Rolcon, Inc.Inventors: Frank D. Nimmo, William R. Merz, W. Howard Newton
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Patent number: 6454077Abstract: An elongated cylindrical roller tube is rotatably supported between frame members by a pair of bearing units secured to opposite end portions of the tube. Each bearing unit includes a tubular shaft supporting a hexagonal stub axle for axial movement between an outwardly projecting position engaging a frame member and an inwardly retracted position against the bias of a spring member connected to the shaft. An anti-friction bearing is mounted on the tubular shaft and is retained within the roller tube by an annular adapter. An annular dust cover projects radially outwardly from the tubular shaft to protect the bearing. Some parts are molded of an electrically conductive plastics material, and each hexagonal stub axle has a slightly resilient outer surface, a rigid core pin and a tapered and twisted outer tip portion.Type: GrantFiled: December 18, 2000Date of Patent: September 24, 2002Assignee: Rolcon, Inc.Inventors: Frank D. Nimmo, William R. Merz, W. Howard Newton
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Publication number: 20020074208Abstract: A curved section of a roller conveyor includes a plurality of conveyor roller assemblies each formed by an elongated rigid cylindrical base tube with a bearing and stub axle unit mounted on each end portion of the base tube. The stub axle is spring biased and has a slightly resilient outer surface and a metal core pin. A tapered tubular sleeve of plastics material is mounted on an outer end portion of the base tube with the large end of the sleeve adjacent the outer end of the base tube. Preferably, the sleeve extends axially less than 50% of the length of the base tube and has a press-fit on the base tube with a radial pin locking the sleeve to the base tube.Type: ApplicationFiled: August 22, 2001Publication date: June 20, 2002Inventors: Frank D. Nimmo, William R. Merz, W. Howard Newton
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Publication number: 20010002643Abstract: An elongated cylindrical roller tube is rotatably supported between frame members by a pair of bearing units secured to opposite end portions of the tube. Each bearing unit includes a tubular shaft supporting a hexagonal stub axle for axial movement between an outwardly projecting position engaging a frame member and an inwardly retracted position against the bias of a spring member connected to the shaft. An anti-friction bearing is mounted on the tubular shaft and is retained within the roller tube by an annular adapter. An annular dust cover projects radially outwardly from the tubular shaft to protect the bearing. Some parts are molded of an electrically conductive plastics material, and each hexagonal stub axle has a slightly resilient outer surface, a rigid core pin and a tapered and twisted outer tip portion.Type: ApplicationFiled: December 18, 2000Publication date: June 7, 2001Inventors: Frank D. Nimmo, William R. Merz, W. Howard Newton
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Patent number: 6161673Abstract: An elongated cylindrical roller tube is rotatably supported between frame members by a pair of bearing units secured to opposite end portions of the tube. Each bearing unit includes a tubular shaft supporting a hexagonal stub axle for axial movement between an outwardly projecting position engaging a frame member and an inwardly retracted position against the bias of a coil spring confined within the shaft. An anti-friction bearing is mounted on the tubular shaft and is retained within the roller tube by an annular adapter. An annular dust cover snap-fits onto the outer end portion of the tubular shaft for protecting the bearing, and the stub axle is retained within the shaft by detents which permit pulling the stub axle from the shaft for axle replacement.Type: GrantFiled: April 24, 2000Date of Patent: December 19, 2000Assignee: Rolcon, Inc.Inventors: Frank D. Nimmo, William R. Merz, W. Howard Newton
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Patent number: 6053298Abstract: An elongated cylindrical roller tube is rotatably supported between frame members by a pair of bearing units secured to opposite end portions of the tube. Each bearing unit includes a tubular shaft supporting a hexagonal stub axle for axial movement between an outwardly projecting position engaging a frame member and an inwardly retracted position against the bias of a coil spring confined within the shaft. An anti-friction bearing is mounted on the tubular shaft and is retained within the roller tube by an annular adapter. An annular dust cover snap-fits onto the outer end portion of the tubular shaft for protecting the bearing, and the stub axle is retained within the shaft by detents which permit pulling the stub axle from the shaft for axle replacement.Type: GrantFiled: September 15, 1998Date of Patent: April 25, 2000Assignee: Rolcon, Inc.Inventors: Frank D. Nimmo, William R. Merz, W. Howard Newton
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Patent number: 4944215Abstract: A fluid actuated cylinder assembly including a piston and piston rod and having a cylinder head capable of shifting in any direction throughout 360.degree. along a plane perpendicular to the long axis of the cylinder. The piston and piston rod are rockable throughout 360.degree., the piston maintaining a fluid tight seal with the cylinder at all times. The cylinder, piston rod and shiftable head are preferably made of acetal resin or equivalent thermoplastic material. The piston comprises a sleeve made of acetal resin or equivalent thermoplastic material mounted on the piston rod and having an integral enlarged flange portion with a peripheral surface carrying a seal maintaining a sealing engagement with the cylinder. Alternatively, the piston comprises a spherical rubber member mounted on the piston rod and making the seal with the cylinder. The cylinder assembly can be pneumatically or hydraulically actuated and may be of the single-acting or double-acting type.Type: GrantFiled: February 6, 1989Date of Patent: July 31, 1990Inventors: Frank D. Nimmo, William H. Newton
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Patent number: D450572Type: GrantFiled: June 26, 2000Date of Patent: November 20, 2001Assignee: Rolcon, Inc.Inventors: Frank D. Nimmo, William R. Merz, W. Howard Newton
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Patent number: D460239Type: GrantFiled: December 19, 2000Date of Patent: July 9, 2002Assignee: Rolcon, Inc.Inventors: Frank D. Nimmo, William R. Merz, W. Howard Newton
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Patent number: D469791Type: GrantFiled: January 9, 2002Date of Patent: February 4, 2003Inventors: W. Howard Newton, Frank D. Nimmo
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Patent number: D413420Type: GrantFiled: August 31, 1998Date of Patent: August 31, 1999Assignee: Rolcon, Inc.Inventors: Frank D. Nimmo, William R. Merz, W. Howard Newton