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:
Dec. 28, 1982
Filed:
Dec. 06, 1979
Applicant:
Inventor:
Seymour A Hatch, Bensenville, IL (US);
Assignee:
Chicago Rawhide Manufacturing Company, Elgin, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C / ;
U.S. Cl.
CPC ...
4161 / ; 416141 ;
Abstract
An elastomeric bearing assembly for supporting a rotor blade of a helicopter including a spherical elastomeric section mounted in serial relationship to a pair of frusto-conical elastomeric bearing section on the blade shaft. The frusto-conical bearing section includes two elastomeric bearings having bonded and alternate layers of elastomeric and non-extensible material and are arranged to receive the resulting force vectors in a direction normal to their planar surfaces.