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:
Feb. 19, 1991
Filed:
May. 18, 1990
Rebecca Gibbs, Carrboro, NC (US);
Jan J Krygier, St. Constant, CA;
Joseph E Miller, deceased, late of Carrboro, NC (US);
by L Desrochers, executor, Edmonton, CA;
by Bryan O'Donnell, executor, Edmonton, CA;
by Patricia Miller, executor, Westmount, CA;
Zimmer, Inc., Warsaw, IN (US);
Abstract
An injection gun especially useful for injecting low volume, high pressure shots of bone cement. The gun includes a cylindrical housing with a plunger including a plunger rod extending axially through the housing. The plunger rod includes a segment which is provided with an axial series of notches. A ratchet block is slidable axially within the cylindrical housing and is concentric with the plunger rod. The ratchet cylinder mounts at least a ratchet pawl urged against the plunger rod and adapted to engage and lock into the series of notches for forward movement. A pistol grip extends from the cylindrical housing, and a lever is pivoted thereto with an extension of the lever engaging the ratchet cylinder for advancing the plunger. A second ratchet pawl is mounted on a fixed member of the cylindrical housing for retaining the plunger against rearward movement when the pawl in the ratchet cylinder is disengaged from the rod.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile