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:
Aug. 24, 1982
Filed:
Jul. 07, 1980
Frank L Gaunt, Puyallup, WA (US);
Other;
Abstract
A precision, very low flow rate, lubricant metering apparatus and method for metering lubricant to a tool and workpiece while various machining operations are performed by the tool on the workpiece. The apparatus has a pneumatic air logic unit which delivers a stream of air pulses to a pneumatically driven positive displacement, precision lubricant injector pump at a selectively variable rate. In response to each air pulse delivered to it, the injector pump delivers a selectively variable amount of lubricant to a lubricant delivery line by which the lubricant can be conveyed to the tool and workpiece. When the apparatus is used with a machine tool powered by an air driven motor, an air flow sensing valve is provided which automatically delivers compressed air to the air logic unit only when the air driven motor is consuming compressed air. Since in many uses of the apparatus both lubricant and compressed air are needed at the tool and workpiece, special housings are provided which enable the delivery of lubricant from the injector pump to a line located within a compressed air delivery line. Air flow control valves may be provided which regulate the delivery of compressed air to the air logic unit and the compressed air delivery line.