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:
Sep. 05, 1989
Filed:
Jan. 09, 1987
Applicant:
Inventors:
John B Shaposka, Wilmington, DE (US);
Dudley W Spencer, Wilmington, DE (US);
Assignee:
Denco, Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B26D / ; B29C / ;
U.S. Cl.
CPC ...
219243 ; 30115 ; 30140 ; 83171 ; 156499 ; 156510 ; 219233 ; 219543 ;
Abstract
A thin wafer for cutting plastic tubes which are to be butt welded together includes a high temperature insulated plate-like core with a resistance circuit on the core for heating the wafer to a temperature sufficiently high to melt through the tubes. A glass layer may be on the outer surface of the water, particularly in the contact area with the tube. The wafer may be used in an arrangement wherein residue is removed from the water by having the residue adhere to unused portions or stubs of the tubes which then would be stripped from the wafer.