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:
Aug. 14, 1990
Filed:
Apr. 26, 1989
Jan Karlsson, Vastra Frolunda, SE;
AB Volvo, , SE;
Abstract
Length-adjusting device is provided on a switch, intended to indicate the shift of an object from a normal position. The switch comprises a fixed part, intended to be assembled securely in a chassis for example, and a switch part which is movable relative to the latter and which can be changed between different positions for switching the switch depending on the position of the object. The length-adjusting device comprises a first part, which interacts with the object in its positional shifting movements, and a second part which interacts with the movable switch part such that the said second part attempts to hold the movable switch part in one of its positions. The length-adjusting device comprises at least one fluid chamber which changes volume upon relative movement between the first and the second part. A valve is connected to the chamber and permits the passage of fluid to or from the chamber and maintains a resistance to passage of fluid to or from the chamber and maintains a resistance to passage of fluid in the opposite direction. By this means the length-adjusting device adapts the position of the second part relative to the position of the first part to the distance between the normal position of the object and the switch.