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:
Feb. 16, 2016
Filed:
Apr. 13, 2011
Applicant:
Engelbert Köck, Planegg, DE;
Inventor:
Engelbert Köck, Planegg, DE;
Assignee:
KNORR-BREMSE SYSTEME FUR SCHIENENFAHRZEUGE GMBH, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01M 11/12 (2006.01); G01F 23/292 (2006.01);
U.S. Cl.
CPC ...
F01M 11/12 (2013.01); G01F 23/2922 (2013.01); G01F 23/2925 (2013.01); F25B 2700/03 (2013.01);
Abstract
A device for monitoring and/or indicating an oil level in an oil sump of a screw-type compressor, the oil level fluctuating in different operating states of the screw-type compressor. A device for monitoring and indicating the oil level in a screw-type compressor, the reliability thereof being improved over the prior art and erroneous measurements being excluded. The device is an optical unit which has no mechanically moving parts that can become damaged during the often rough use of the device.