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:
May. 13, 1986
Filed:
Mar. 21, 1985
James W Wolff, Chicago, IL (US);
Sandra J Liakus, Lisle, IL (US);
Union Special Corporation, Chicago, IL (US);
Abstract
A apparatus is provided for creating and maintaining lubricant pressure and flow to various operative mechanisms disposed within the frame of the sewing machine independent of the sewing machine operation. To aid in the lubrication process, a lubricant heater is provided. The lubricant heater operates independent of the sewing machine operation and serves to warm or heat the lubricant to a preset temperature before it is communicated to the bearing surfaces of the operative mechanisms. The invention may further include a device disposed between the lubricant pump and heater for filtering the lubricant before it is delivered to the operative mechanisms of the machine.