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:
Jan. 16, 1979
Filed:
Mar. 18, 1977
Dieter Handtmann, Sindelfingen, DE;
Gotthold Raabe, Stuttgart-Fasanenhof, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to pressure differential indicating apparatus in a hydraulic measuring bridge which includes a measuring chamber that is provided with a valve means that emits a throughflow quantity into the chamber to be measured thereby and a further valve element for discharging the throughflow quantity from said chamber. The measuring chamber is associated with a pressure differential sensor having a movable wall which controls the volume of the measuring chamber and is acted upon by the pressure of a measuring medium that pulsates at slightly different pressures. Further, the pressure differential sensor is provided with a signal transmitter for controlling the measuring chamber volume and includes a cylinder having a wall provided with a piston means associated with a piston rod. The piston rod has one free end thereof arranged to cooperate with the signal transmitter and the piston means further includes a sealing means having an extent which cooperates with the cylinder wall to form an annular seal therebetween.