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. 08, 2011
Filed:
Jan. 28, 2005
Joseph Hermes Kaal, Morpeth, AU;
Craig Stephen Thorley, Largs, AU;
Damien Judd, Heathmont, AU;
Unitract Syringe Pty Ltd., West Perth, Western Australia, AU;
Abstract
A syringe () has a plunger (), a barrel () and a collar () with two pawls (A,B). The plunger has two opposed ratchets (A,B) that align with the one each of the pawls and thereby or impede, withdrawal of the plunger during or following depression of the plunger. The barrel has a collar with an inner () and an outer member () that are incapable of rotation relative with respect to each other. The outer member has the two pawls (A,B) and two fingers that slidably engage opposed guide slots () on the plunger to thereby prevent or minimize rotation of the plunger relative to the collar. The inner member of the collar is operable to prevent engagement of the plunger ratchet by the two pawls until the plunger is depressed.