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:
Mar. 06, 1979
Filed:
Oct. 31, 1977
Applicant:
Inventors:
Assignee:
Motorenfabrik Hatz GmbH & Co. KG, Ruhstorf, DE;
Primary Examiner:
Int. Cl.
CPC ...
F02B / ; B01D / ; F02M / ;
U.S. Cl.
CPC ...
1231 / ; 123 417 ; 55274 ; 55DI / ; 73118 ; 1231 / ;
Abstract
A signal indicating device for an internal combustion engine. The internal combustion engine has a sound absorbing shell surrounding the engine body. An air intake pipe is mounted on the engine and an air intake filter is mounted on the inlet end of the air intake pipe. The signalling device is provided to indicate the degree of contamination of the air filter. The signaling device can be a visual signal or an audible signal.