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. 07, 1978
Filed:
Sep. 27, 1976
Applicant:
Inventor:
Frank T Clark, Jr, Erie, PA (US);
Assignee:
Tantera, Inc., Girard, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47L / ;
U.S. Cl.
CPC ...
300 21 ; 1524 / ;
Abstract
A process for making a replaceable part of a sponge mop normally referred to as a refill. The refill is made by enclosing the sponge in a mold and compressing it to close the pores of the sponge on at least one side. A thermoplastic material in the molten state is then injected into the mold against at least one surface of the sponge and allowed to cool. The sponge is then removed from the mold, and water is applied to it to expand it to its original condition.