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, 1993
Filed:
Jul. 10, 1992
Daniel P Brown, Palos Park, IL (US);
Insta-Foam Products, Inc., Joliet, IL (US);
Abstract
A hand held dispenser for chemical foam compositions having enhanced service life and being capable of delivering higher outputs of foam products is provided. In accordance with the invention, a dispenser cartridge is mounted in sealed movable relation to a cartridge carrier. Reliable face to face compressible seals are employed to accomplish primary porting to pressurized sources of chemical components. The dispenser cartridge does not rely on a sealed interface between a cylindrical valving rod and a dimensionally unstable TEFLON.RTM. bushing for porting which provides improved sealing performance. Multiple porting from two or more pressurized sources of chemical components is also facilitated by the sliding seal feature.