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. 30, 1991
Filed:
Jul. 02, 1990
James D Sparks, Edelstein, IL (US);
Dennis E Van Meter, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
Conventional tappet retainer assemblies for a fuel injection pump typically include a blind radial passage formed in a tappet. Only one opening in the passage is available for inserting and removing a ball bearing or spring and stop pin which must be held in place before the tappet is inserted in a housing bore. In such an arrangement, the ball bearing or compressed spring and stop pin are prone to pop or fall out before the passage opening is closed by an internal wall of the housing bore. The present invention provides an improved tappet retainer assembly which includes a housing, a tappet, a stop device, and a biasing device. The tappet includes an internal passage which allows the stop device and biasing device to be communicated to their final assembled position in the internal passage while the tappet is already inserted in a bore of the housing.