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. 11, 1983
Filed:
Apr. 20, 1981
Harry H LeVeen, Charleston, SC (US);
Eric G LeVeen, Albany, NY (US);
Robert F LeVeen, Philadelphia, PA (US);
Other;
Abstract
A syringe comprising a cylindrical barrel with a wall at one end with a nozzle and with a threaded actuating rod extending from its other end, the rod carrying a piston in fluid tight engagement with the inner wall of the barrel. The rod also carries a collar with threads which mate with the rod threads, and the collar has slots which engage projections on the barrel and prevent movement of the collar relative to the barrel but which permit the collar to be disengaged readily from the barrel. A manually engageable knob is rotatably mounted on the rod at its end remote from the piston and is interconnected with the rod by a compressible, spiral spring. A ratchet wheel is mounted on the rod so as to rotate therewith and is adjacent the knob. The knob carries a spring biased pawl in the form of a tooth which is engageable with the ratchet wheel teeth. As the pressure on the fluid in the barrel is increased, the spring is compressed and the knob rotates with respect to the rod causing the pawl to assume a position dependent on the pressure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile