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. 24, 1976
Filed:
May. 07, 1974
Roger R Larson, Champaign, IL (US);
Pharmaco, Inc., Champaign, IL (US);
Abstract
The safety cap of the present invention is for use with a medicament vial having a puncturable seal. The cap includes a cylindrical extension provided with a shape-retentive but slightly expandable cylindrical body slidable therein having a diametrically reduced sharpened tubular needle extension on its inner end for piercing the seal. The body includes first and second portions of slightly different diameters, with the portion of smaller diameter outermost, and an inwardly tapering center portion, thus defining two shoulders for cooperating with an inwardly projecting lip on the outer end of the cylindrical extension to resiliently resist inward movement of the body and to prevent outward withdrawal of the body after it has been pressed inwardly to puncture the seal. The body has a central bore formed therethrough defining an inwardly tapering passage and a larger diameter counterbore in which the pointed end of a hypodermic needle and the tapered tip extension of a conventional syringe barrel may be wedgingly and sealingly seated.