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. 30, 1982
Filed:
Aug. 04, 1980
William E Flynn, Chelsmford, MA (US);
Charles F Mountain, Cambridge, MA (US);
Instrumentation Laboratory Inc., Lexington, MA (US);
Abstract
A device for dispensing liquid from an ampul or the like has a body that defines a cavity with an open entrance end for receiving an ampul. An annular seal in the cavity is in sealing engagement with an ampul as the ampul is telescopically inserted into the cavity, and an inlet tube secured in the cavity has an inlet end adjacent the open end of the cavity and an outlet end in fluid communication with a dispensing passage, so that when an ampul is in sealing engagement with the annular seal and the inlet end of the tube is submerged in liquid in the ampul, further axial movement of the ampul into the cavity creates a piston action which compresses air trapped in the cavity and forces liquid from the ampul through the inlet tube and the dispensing passage in a dispensing action.