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:
Dec. 03, 1996
Filed:
May. 23, 1995
Brian C Allen, Angwin, CA (US);
James D Simpson, Yucaipa, CA (US);
Other;
Abstract
An inflatable pneumatic plug useful for expediting the hydrostatic testing of bathtub and water plumbing installations. The pneumatic plug has a semi-rigid handle tube with an air valve at one end and an inflatable tube attached to its opposite end. The inflatable tube and the handle are of sufficiently small diameter to pass through the overflow drain in the bathtub, past the drain stopper assembly and into the drain trap without disassembly of the plumbing. The inflatable tube, such as a latex tube, is chosen with a length and wall thickness such that the inflatable tube is relatively stiff and will tend to deflect laterally around a solid obstacle when advanced into the plumbing rather than flattening axially. The inflatable tube is inflatable to a diameter at least five times greater than its deflated diameter for making a water-tight seal in a plumbing conduit.