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. 16, 2004
Filed:
Dec. 19, 2002
Terje Svendsen, Asker, NO;
Jon Myhre, Stjordal, NO;
Syringus AS, Oslo, NO;
Abstract
A needle covering mechanism for a hypodermic syringe includes a protective cover sleeve which is movable between a retracted position in which a needle is exposed and an extended position in which the needle is covered. A retainer includes first detents which by means of a spacer is forced to engage indentations in the cover sleeve to prevent a movement of the cover sleeve towards the extended position. The spacer is made from a material which after some time in contact with an injectant loses its mechanical strength, and some time after filling the syringe with an injectant, the spacer deforms, the first detents slip out of the indentations in the cover sleeve, and a spring forces the cover sleeve to the extended position.