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:
Mar. 30, 2004
Filed:
Oct. 08, 2002
Gregory B. Mills, Seneca, MO (US);
Spraytex, Inc., Valencia, CA (US);
Abstract
A drywall tape and texture system for pumping fluid material from a container to a work surface includes a pump housing, a compressed air supply, a plurality of air release mechanisms, and an inflatable bladder mounted within the pump housing and held between upper and lower valves for controlling the flow of the material. The pump housing may be fully or partially immersed into a container filled with fluid material. An automatic pneumatic pressure relief valve automatically cycles open and closed whenever a control line is held closed by an operator. When the normally closed automatic air release mechanism is closed, the control line may also be closed by the operator, causing the bladder to inflate and pump fluid out of the pump housing. When the control line to the atmosphere is opened, the bladder deflates and a partial vacuum is created, thus refilling the pump through the lower valve.