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:
Oct. 07, 1986
Filed:
May. 31, 1984
Abstract
An electrically powered squeezer such as a caulking gun for dispensing a viscous substance such as a caulking or sealing compound. The gun comprises a housing carried by an operator and incorporating an electric motor and a switch for energizing and deenergizing the motor. The housing is formed with a holder for receiving therein a cartridge filled with the above viscous substance and having a discharge nozzle. Incorporated within the housing is a pressing element driven by the motor to compress the cartridge wall so as to force the viscous substance out of the cartridge through the nozzle. A release mechanism is included to disengage the driving connection between the motor and the pressing element when the switch deenergizes the motor, in such a way as to allow the pressing element to retract to a position where the pressing element no longer exerts pressure upon the viscous substance. Accordingly, when the squeezing of the viscous substance is interrupted, the consequential retraction of the pressing element releases the residual pressure in the viscous substance remaining within the cartridge which developed in the previous squeezing by the pressing element, thus preventing the viscous substance from drooping or oozing from the nozzle.