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. 24, 1977
Filed:
Sep. 20, 1976
James R Crose, Chelmsford, MA (US);
Charles A Hartnett, Beverly, MA (US);
W. R. Grace & Co., Cambridge, MA (US);
Abstract
In a method for coating the inside of a receptacle, fluid flow is controlled by a valve that has a torpedo shaped valving member in the middle of an enlarged passageway. The valving member contains an elastomeric sleeve that expands outwardly from a hinged area when compressed to form a line seal with the passageway. The valve is in the form of a multiple valve -- feeding, bypass and venting valving units all in one dielectric casting. Said casting is unitary with flange means operative to seal and mask said inside with respect to the external surface of the receptacle while the vent and coating material discharge means is functionally associated with said inside.