Molded article of manufacture and method of making the same

• US 2,839,943 A
• Filed: 05/28/1954
• Issued: 06/24/1958
• Est. Priority Date: 05/28/1954
• Status: Expired due to Term

• Current Assignee: Ernest O. Hausmann, Lewis E. Caldwell
• Original Assignee: Ernest O. Hausmann, Lewis E. Caldwell
• Inventors: Caldwell, Lewis E., Hausmann, Ernest O.
• Application Number:
  US03/432,976
• Time in Patent Office: 1,488 Days
• US Class Current: 74/445
• CPC Class Codes: F16H 55/06 Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties coatings for lubrication F16H57/041; producing gear wheels from plastics or substances in a plastic state B29D15/00; heat treatment C21D9/32; electrolytic surface treatment C25D; heating by electromagnetic field H05B6/00
• CPC Class Codes: F16H 55/14 Construction providing resilience or vibration-damping F16H55/06 takes precedence
• CPC Class Codes: Y10S 74/10 Polymer digest - plastic gears
• CPC Class Codes: Y10T 74/18104 Shiftable pinion
• CPC Class Codes: Y10T 74/1987 Rotary bodies
• CPC Class Codes: Y10T 74/19916 Multiple disks

Claims

1. A GEAR COMPRISING A MOLDED OUTER RIM PORTION OF LAMINATED SHEET FIBROUS MATERIAL BONDED TOGETHER WITH A THERMOSET RESINOUS BINDER SELECTED FROM THE GROUP CONSISTING OF PHENOL-FORMALDEHYDE RESINS, EPOXY RESINS, MELAMINE-FORMALDEHYDE RESINS, AND POLYESTER RESINS, THE LAMINATED SHEET FIBROUS MATERIAL SUBSTANTIALLY AT RIGHT ANGLES TO THE AXIS OF THE GEAR, THE SHEET FIBROUS MATERIAL BEING NATURAL COTTON FIBROUS MATERIAL WHICH HAS BEEN CHEMICALLY TREATED TO REMOVE SUBSTANTIALLY ALL DIRT, STARCH SIZING, NATURAL OILS AND WAXES TO LEAVE A FIBROUS MATERIAL COMPRISING SUBSTANTIALLY ONLY PURE CELLULOSE, THE CHEMICALLY TREATED COTTON COOPERATING WITH SAID THERMOSET RESINOUS BINDER TO PROVIDE A GEAR WHICH HAS GREATER HEAT STABILITY THAN A SIMILAR GEAR PREPARED FROM NATURAL COTTOM COMPOSED OF UNPURIFIED CELLULOSE.