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. 06, 2018
Filed:
Sep. 05, 2017
Applicant:
Chervon (Hk) Limited, Wanchai, HK;
Inventors:
Assignee:
Chervon (HK) Limited, Wanchai, HK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B27B 17/12 (2006.01); F04B 53/14 (2006.01); F04B 53/10 (2006.01); F04B 53/16 (2006.01); F04B 7/00 (2006.01);
U.S. Cl.
CPC ...
B27B 17/12 (2013.01); F04B 7/0088 (2013.01); F04B 53/1002 (2013.01); F04B 53/14 (2013.01); F04B 53/16 (2013.01); Y10T 83/707 (2015.04); Y10T 83/7139 (2015.04);
Abstract
A chain saw has a fluid pump. The fluid pump has a pump rod, a pump core assembly defining a pumping channel, and a pump body. The pump core assembly has an inner pump core and an outer pump core. The pumping channel is formed at least by a first hole defined in the inner pump core and a second hole defined in the outer pump core and the first hole is in communication with the inlet and the outlet. The pump rod is arranged to do a straight reciprocating motion in the pumping channel along a first axis so as to force fluid to flow from the inlet to the outlet by passing through the first hole.