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:
Sep. 04, 2001
Filed:
Jun. 22, 1999
Daniel R. Neitzel, Elgin, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
The present oil filled pin joint includes at least one buffer member for absorbing rapid pressure increases or spikes in the oil contained in the joint. The present pin joint includes a pin, at least two opposed members joined by the pin for movement one relative to the other, the members defining a space therebetween, and at least one seal disposed between the opposed members sealably enclosing the space. The at least one buffer member is disposed in communication with the space, the space having a volume defined by the opposed members, the at least one seal, and the at least one buffer member. The space is at least substantially filled with oil and the opposed members are relatively movable to effectively trap at least some of the oil in the space and pressurize the trapped oil, the at least one buffer member being resiliently compressible by the pressurized trapped oil to reduce the pressurization to avoid damaging the at least one seal.