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. 24, 2001
Filed:
Nov. 03, 1998
Applicant:
Inventors:
Jack Brass, North York, CA;
William G. L. Knecht, Mississauga, CA;
Assignee:
117180 Ontario Limited, , CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01B 3/00 ; B67D 5/42 ;
U.S. Cl.
CPC ...
F01B 3/00 ; B67D 5/42 ;
Abstract
A liquid injector comprising a tubular spindle having an open end and a partially closed end, a cylindrical piston, a seal mechanism between the spindle and the piston, a tubular driver sleeve to cause the piston to move towards the spindle closed end, and an internal ratchet mechanism located between the piston and a closed end of the tubular driver sleeve for controlling the degree of rotation of the driver sleeve and providing a positive indication of driver sleeve rotation.