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:
Mar. 14, 1995
Filed:
Oct. 28, 1991
Applicant:
Inventors:
Kirby H Floyd, San Jose, CA (US);
John J Busuttil, Santa Clara, CA (US);
Assignee:
FMC Corporation, Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
29436 ; 29230 ; 2922565 ;
Abstract
The invention provides an indirect linkage between a spring and a hatch supported by the spring. The torque or moment applied by the hatch is significantly curved. The indirect linkage which provides a first varying moment arm and a second varying moment arm and utilizes a varying ratio between the first moment arm and the second moment arm to provide an applied spring torque which matches the shape of the torque curve applied by the hatch.