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:
Nov. 13, 1984
Filed:
Apr. 15, 1983
Gerhard Kurz, 7261 Althengstett, DE;
Other;
Abstract
An operating condition indicator for vacuum cleaners which has a diaphragm switch which responds to vacuum and a luminous indicating device. The operating-condition indicator is intended for vacuum cleaners which have a turboblower which acts directly on the suction connection and is arranged in front of the dust bag, the pressure detected in the region of the suction opening becoming less as the dust bag becomes increasingly full. The vacuum is detected at the suction opening and fed to a diaphragm switch having additional spring biasing, as a result of which an indication of readiness for operation is obtained when the motor is off and, in addition, a warning indication is given when the dust bag is excessively full, without the necessity of actuating a switch.