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:
Jun. 16, 1992
Filed:
May. 17, 1990
Applicant:
Inventors:
Gary A Russell, Pacific Grove, CA (US);
Paul J Donley, Monterey, CA (US);
Assignee:
Graco Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; F16J / ;
U.S. Cl.
CPC ...
277 37 ; 9216 / ; 921691 ; 2221462 ; 277 35 ; 277 50 ; 277 58 ; 2771 / ; 2772 / ; 285404 ;
Abstract
An air operated dispense head for dispensing of hot melt and related adhesives is provided which utilizes a drop-in seal cartridge assembly in which a hardened needle is sealed using a pair of quad seals along with soft back up rings. Improved life is obtained from this combination of elements.