Brake servo-booster

Abstract

Abstract PURPOSE: To reduce the length of a housing by supporting a lateral contact member by a valve element so that the maximum movement position is determined by an abutment member and a fixed surface, and installing a switch means near the valve element so that it is operated according to the movement of the contact member and the valve element. CONSTITUTION: The rightmost end part of a piston 8 forms a valve seat 8A, a hub 5 forms another valve seat 5A, and both of these valve seats are disposed so that they are cooperated properly with a poppet valve assembly 13. The piston 8 supports an abutment member extending in the radial direction of the type of a key 14 in abutment on a housing so that it determines the backward position of the piston 8 when a booster is stopped. Next a casing 15 for storing a microswitch 16 is installed in the housing 1, and an operating lever 18 for energizing to the left side rotating position which acts on a button 16A so that a switch 16 is operated by a spring 19 is installed rotatably on the switches 16 and 17.

Inventors

• 👤 Philip Cunningham
• 👤 フィリップ　カニンガム
• 👤 Stuart J Briggs
• 👤 スチュワート　ジョン　ブリッグス

Bibliographic Details