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:
Jul. 24, 1979
Filed:
Aug. 22, 1977
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A command transmitter is in the form of a step switch with a progressive bridging contact, the individual contacts of the step switch being connected to individual contacts of a contact array over which a slider mounted on the drive rod that actuates the headlight elevation position slides. The inertia of the moving drive rod carries the slider beyond the last energized contact of the array. If a single contact array is used, a restoring spring pushes back the drive rod until it again touches an energized contact and the drive executes a hunting movement that is designed to provide no appreciable disturbence of the headlight position. When a second contact array and slider are used, in cooperation with a second set of contacts and a second bridging contact at the command transmitter, a reversible drive is used and there is no hunting movement. A non-reversible drive is provided by an expansion chamber drive controlled by an electrical heater. A reversible electric motor is used in the reversible drive.