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:
Mar. 24, 1992
Filed:
May. 13, 1991
Applicant:
Inventors:
Leslie Bubik, Toronto, CA;
R James Dornan, Scarborough, Ontario, CA;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
1563941 ; 156 96 ; 156909 ; 425 14 ; 425 281 ; 425 58 ;
Abstract
An expandable annular envelope sealing device for manually sealing a curing envelope between an outer annular portion and the bead of a tire to be retreaded in an autoclave. This envelope sealing device includes two opposed, expandable semicircular half-rings and either a toggle-actuated sealing lever or, preferably, a turnbuckle sealing lever for fine tuning adjustment of the expansion of the half-rings.