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:
Nov. 20, 2001
Filed:
Apr. 24, 2000
Hisanori Itoh, Iwate-ken, JP;
Kenichi Kubota, Iwate-ken, JP;
Mikuni Adec Corporation, Iwate-ken, JP;
Abstract
The invention provides a compact oil pump for separate lubrication having no back gear with the rotation of an engine as a driving source even when the engine is reversely rotated. In the oil pump for separate lubrication, a distributor is fitted to a cylinder,arranged in a pump body so as to be rotated and moved in an axial direction; a plunger is fitted to a pump chamber arranged in the distributor so as to go in and out of the pump chamber; a shaft arranged on a side opposed to the pump chamber of the distributor is covered with a worm wheel engaged with a driving worm, and a pin inserted into the shaft is engaged with a concave portion formed in the worm wheel with play; a lead cam arranged in the worm wheel comes in press contact with a discharging amount setting cam and the plunger,comes in press contact with a cover for closing the cylinder by a spring interposed between the distributor and the plunger; an inlet-outlet path, communicated with the pump chamber and opened to a circumferential face of the distributor is arranged in the distributor; and an outlet hole, and an inlet hole conforming to an opening portion of the inlet-outlet path, in a position in the axial direction of the cylinder are arranged in the pump body.