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. 26, 1983
Filed:
Aug. 04, 1980
Applicant:
Inventors:
John H Brems, Birmingham, MI (US);
James T Graham, Rochester, MI (US);
Assignee:
F. Jos. Lamb Company, Warren, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
B61B / ;
U.S. Cl.
CPC ...
104 93 ; 188290 ; 198473 ; 104 89 ;
Abstract
A gravity operated conveyor comprises a workpiece supporting trolley having at least two independent unpowered wheels for supporting the trolley on a track. One of the wheels engages the track when the trolley is empty and the other engages the track when the trolley is loaded with a workpiece. Each wheel has a speed retarding mechanism operably connected therewith so that the speed retarding force on the trolley is greater when the trolley is loaded than when the trolley is empty.