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:
Jul. 19, 1988
Filed:
Jul. 24, 1987
Oliver J Calder, Orange, CA (US);
Other;
Abstract
There is disclosed a spray tip for airless spraying in which a turret member, which carries the tungsten carbide spray tip, is rotatably mounted in a spray tip housing and is removably and interchangeably received in the housing. The turret member is provided with a dynamic seal which has a seal formed of a very hard plastic, preferably an acetal copolymer that is filled with a reinforcement material, preferably with glass fibers. The hard reinforced plastic resists cold flow and extrusion while, nevertheless, providing a resilient seal that is very effective, even when spraying very low viscosity liquids. Longevity of this seal and ease of rotation of the turret member while maintaining full sealing pressure on the seal is achieved by the cooperative use of a resiliently biased piston support for the seal. The seal is secured to the piston to form a seal subassembly and this subassembly is resiliently biased against the cylindrical face of the turret member by a compression spring captured between the upstream end of the piston and the end face of the spray gun barrel onto which the spray tip is secured.