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:
Aug. 29, 1989
Filed:
Jan. 11, 1988
Joseph Anderson, Atherton, CA (US);
Barney T Baldi, Eldorado Hills, CA (US);
John M Engstrom, Walnut Creek, CA (US);
Bechtel International Corporation, San Francisco, CA (US);
Abstract
A joint seal comprises two elastomeric elements, configured to fit as a nested assembly within the gap between adjacent slabs. The outer element (the 'outer seal') is a generally U-shaped channel (with sides and a bottom), and performs the actual sealing function. The outer surfaces of the channel sides are formed with a series of longitudinally-extending fins, which frictionally engage the slab edges. The inner element ('the core') is formed as a generally rectangular tube that provides a structural strength for the seal assembly. It includes a tubular outer wall and an internal truss-type framework consisting of a number of interconnected webs. The seal assembly is installed under compression.