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:
May. 02, 1989
Filed:
Sep. 02, 1987
Applicant:
Inventors:
Peter White, Sheffield, GB;
Ronald A Street, Derby, GB;
Christopher I Greaves, Sheffield, GB;
Gordon Harrison, Notts, GB;
Assignee:
Du Pont U.K. Ltd., Stevenage/Herts, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
29611 ; 29423 ; 285 21 ; 219544 ; 26427218 ; 264163 ; 264278 ; 264334 ; 156294 ;
Abstract
Welding muffs for joining thermoplastic pipes are molded using a core in which are placed terminals supported by plastic posts which may be removable and/or frangible so that when the cores are withdrawn the plastic posts do not prevent withdrawal.