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. 09, 1992
Filed:
Feb. 15, 1991
Peter A Kamis, Willoughby Hills, OH (US);
Lubriquip, Inc., Cleveland, OH (US);
Abstract
A dripless spray nozzle for an intermittent or cyclical spraying operation providing a spray manifold having an inlet port for receiving a pumped material to be sprayed, such as pressurized lube oil, and an inlet port for receiving pressurized air, a mixing chamber for mixing the material and the air, an outlet for conveying the mixture to an attached spray nozzle for spraying an air/material mixture onto an object such as an air/lube oil mixture onto a wheel of a railroad transit car. The spray manifold further comprises a first check valve downstream of the mixing chamber, and a second check valve mounted in the material inlet port. The material to be sprayed is intermittently or cyclically pumped past the second check valve into the mixing chamber. Pressurized air mixes therein with the material and the mixture is sprayed past the first check valve. A reduction in pressure of the pumped material closes the second check valve. The pressurized air is controlled to purge the manifold and then to vent the manifold to atmosphere to prevent seepage of material past the first check valve.