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:
Jul. 11, 1989
Filed:
Feb. 10, 1988
John T Allen, Duncan, OK (US);
Halliburton Company, Duncan, OK (US);
Abstract
A mechanical fuse for a reciprocating roller chain is provided which protects mechanical apparatus, such as a carriage assembly, from damage due to a mechanical power surge, or overload. A stirrup shaped body portion is included with a protruding member and a receiving member disposed thereon. The protruding member connects with a master link in the roller chain and the receiving member is connectable via a shear pin to either an end link in the roller chain, or the mechanical apparatus being protected. The shear pin is placed perpendicularly to the direction of the potential mechanical power surge and shears upon application of a tangential force which is greater than can be withstood by the shear pin, but less than the amount of force which will damage the mechanical apparatus, or any other drive components. Therefore, the shear pin separates and interrupts the roller chain path, relieving any mechanical overload, prior to any damage being sustained by the mechanical apparatus or roller chain.