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:
Jan. 15, 1985
Filed:
Aug. 06, 1982
Ferdinandus A Pieters, Concord, CA (US);
Micropump Corporation, Concord, CA (US);
Abstract
The drive and driven gears of a pump are formed with grooves extending inward from the tips of the teeth to inside the root diameter. Thus each gear is divided into a first portion which serves solely as a drive or driven gear and a second portion which serves the two functions of a conventional pump gear, mainly to perform the pumping function and part of the drive function. Fitting within the grooves of both gears is a suction shoe which also overlies the inlet duct of the pump block and the mesh points of the first portions of the gears plus about two teeth to either side of the mesh point. The shoe separates the large portion of the pump chamber from the inlet duct.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile