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:
May. 16, 1989
Filed:
Jul. 15, 1987
Martin F Ball, Wantage, GB;
Metal Box p.l.c., Reading, GB;
Abstract
A pump chamber dispenser for toothpaste or other viscous or pasty product comprises a pump member (54) moulded from elastomeric material and having a domed central portion (56) and a bifurcated peripheral portion providing inner and outer skirts arranged to lie against respective surfaces of a projection (36) formed on the end wall (18) of the dispenser body (10), and to serve as inlet and exit valves controlling an inlet port (20) communicating the pump chamber (21) with the reservoir chamber (22), and an exit port communicating the pump chamber with a discharge nozzle (68). The nozzle is integral with a cover fixed to the body (10) and enclosing the pump member, the cover including a button (70) for acting on the pump member to operate the dispenser.