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. 27, 1988
Filed:
Feb. 25, 1983
John C Hoagland, Springfield, MA (US);
Monsanto Company, St. Louis, MO (US);
Abstract
A hot melt adhesive applicator capable of dispensing relatively large volumes of molten adhesive at relatively fast rates, comprising a barrel and rotary valve block mounted in a housing and a rotary valve to control the flow of the molten adhesive through the barrel. Heaters attached to the barrel maintain the adhesive in the molten state. Advantageously an arm may be mounted on the spindle of the rotary valve, capable of being moved manually, by electrical or mechanical means to open and close the valve. Compression seals mounted on the valve spindle prevent seepage of molten thermoplastic from the valve block. The passage in the rotary valve can be selected to provide a low pressure drop in the applicator.