The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 1994
Filed:
Sep. 24, 1992
David J Lang, Rockford, IL (US);
Eric Stoutenborough, Rockford, IL (US);
Gary Gillingham, Cherry Valley, IL (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
Volume, weight and complexity difficulties in the fabrication of torque limiters are avoided in a construction including a housing (10), a shaft (20) journalled in the housing (10) and adapted to be connected to a source (22) of rotary power, and a rotary output (28) journalled in the housing (10). A ball ramp coupling (44) is disposed within the housing (10) and includes an axially movable drive element (46) coupled to the shaft (20), a driven element (42) coupled to the output (28), a spring (52) biasing the elements (42,46) towards each other, facing ramps (61,62) in the elements (42,46) at the interface of the elements and balls (64) in the ramps. A first set of teeth (72) is carried by the drive element (46) while a second set of teeth (82) is carried by the housing (10) and aligned with the first set of teeth (72). When resistance to rotation of the output ( 28) is encountered relative movement between the elements (42,46) will occur which in turn will cause the ball (64) to move the drive element (46) axially relative to the driven element (42) causing the teeth (72,82) to engage to halt further torque transmission between the input shaft (20) and the output (28).