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:
Apr. 11, 1989
Filed:
Nov. 15, 1987
Fritz Meckenstock, Wuppertal, DE;
Abstract
A dispenser for dispensing paste compositions comprising a piston movable in an emptying direction within a dispenser housing, and a stopper part for closing the piston adapted to be driven in sealing manner into the piston. A stopper seat is developed in the piston and the dispenser housing is evacuatable by an air vent zone located in the region of the stopper seat, the zone being defined by slots formed between the stopper seat and the stopper part which are interrupted by radial arms of the stopper part. The arms form two separate sections which lie one behind the other in axial direction, and which are separated from each other by a free space, and at least those arms which lie on a cross-sectional plane of one section are formed as tear-off arms.