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. 12, 1977
Filed:
Jul. 23, 1975
Osamu Mukai, Yokohama, JA;
Kokichi Fukuzawa, Yamato, JA;
Yoshiro Nagao, Chigasaki, JA;
Kenichi Kubota, Tokyo, JA;
Shigelu Kobayashi, Tokyo, JA;
Masakuni Shibuya, Tokyo, JA;
Mikuni Kogyo Kabushiki Kaisha, Tokyo, JA;
Abstract
A lubricating oil pump comprising a plunger slidably and rotatably fitted in a cylinder chamber and having a worm wheel at one end and a lead portion at the other end thereof and arranged to form a pump chamber by means of a part of said cylinder chamber and said lead portion, said lubricating oil pump thereby providing comparatively large delivery in spite of the fact it can be manufactured at a low cost and is small in size. The lubricating oil pump further comprises an annular groove formed at a middle portion of the plunger and an eccentric cam, which is operable from outside, projecting into said annular groove and displaceable in thrust direction of the plunger so that the plunger stroke can be varied.