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:
May. 30, 1989
Filed:
Aug. 10, 1987
Applicant:
Inventors:
Ernest W Reinwall, McHenry, IL (US);
Robert A Hagan, Roscoe, IL (US);
Assignee:
Elco Industries, Inc., Rockford, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
74574 ; 74572 ; 74527 ; 74531 ; 188130 ;
Abstract
A rotatable shaft carries a hard plastic disc located in a housing. A braking member in the form of a steel washer is sandwiched between the plastic disc and a washer-like elastomeric spring which is compressed against an axially facing wall of the housing. The spring urges the braking member frictionally against the disc to retard rotation thereof and dampen rotation of the shaft. By adjusting a screw, the disc may be shifted axially toward or away from the spring to change the compression thereof and thereby change the retarding torque applied to the disc.