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:
Jan. 09, 1979
Filed:
Jun. 23, 1977
Robert B Miller, Malvern, PA (US);
Other;
Abstract
A method and apparatus for permanently and sealably connecting two duct sections, the duct sections having peripheral flanges forming opposite and corresponding halves of a composite, T-shaped peripheral flange extending outwardly from the duct sections. The composite flange has an upper cross-piece portion and a lower upright portion, the lower upright portion of the T-shaped flange containing a continuous reservoir of deformable gasket material. The method comprises the steps of first placing square-cornered, U-shaped clamps over the upper cross-piece portion of the T-shaped flange at spaced intervals thereon; secondly, pressing sides of each of the clamps inwardly and crimping the clamps to upper and lower surfaces of the upper cross-piece portion, forcing a portion of the gasket material to flow from the reservoir between the flange halves, towards the duct sections, thereby producing a sealed joint between the duct sections; and thirdly, rippling each of the clamps simultaneously with the upper cross-piece portion adjacent each of the clamps, causing undulations in both which prevent the clamps from slipping out of clamping contact with the upper portion of the T-shaped flange, thereby permanently connecting the duct sections.