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:
Jul. 16, 2002
Filed:
Nov. 08, 2000
Peter J. Bertagna, Moultonboro, NH (US);
Watts Regulator Co., North Andover, MA (US);
Abstract
An in-line expansion tank includes a sleeve defining a volume, a pipe positioned within the sleeve, and an annular flexible bladder disposed within the volume between the sleeve and the pipe. The pipe defines a fluid flow channel, an inlet at an upstream region of the pipe in fluid communication with the fluid flow channel, and an outlet at a downstream region of the pipe in fluid communication with the fluid flow channel. The bladder and the sleeve define an outer radial chamber therebetween. The chamber is pressurized during normal use and the bladder is configured to contact the pipe during operation at normal water pressure to minimize dead space between the bladder and the pipe. The tank includes a valve for pressurizing the chamber.