DISK BRAKE ASSEMBLY

• US 3,712,422 A
• Filed: 11/08/1971
• Issued: 01/23/1973
• Est. Priority Date: 11/07/1970
• Status: Expired due to Term

• Current Assignee: Hiromi Yazawa, Sadao Kondo, Tetsuo Haraikawa
• Original Assignee: Hiromi Yazawa, Sadao Kondo, Tetsuo Haraikawa
• Inventors: Haraikawa, Tetsuo, Kondo, Sadao, Yazawa, Hiromi
• Primary Examiner(s): Knowles, Allen N.
• Application Number:
  US05/196,485
• Time in Patent Office: 442 Days
• Field of Search: 188/72.5,73.4,72.3,73.3,216
• US Class Current: 188/72.3
• CPC Class Codes: F16D 2055/0025 comprising a flat frame member
• CPC Class Codes: F16D 2055/007 Pins holding the braking members
• CPC Class Codes: F16D 2200/0056 Elastomers
• CPC Class Codes: F16D 55/226 in which the common actuating member is moved axially , e.g. floating caliper disc brakes
• CPC Class Codes: F16D 55/227 by two or more pins

Abstract

This invention concerns with a disk brake unit comprising a cylinder body fixedly mounted on the chassis or the like stationary members of the vehicle, a pair opposedly actuatable hydraulic pistons mounted in the bore of said cylinder body, a pair of friction pads movable towards and remote from a brake disk rotatable in unison with one of several wheels of said vehicle and a caliper slidably mounted on said cylinder body, one of said pads being adapted for actuation directly by the action of one of said pistons, while the remaining pad is adapted for actuation by the remaining piston through said slidable caliper. The improvement resides in the separation of caliper supporting means from the sliding means relative thereto, so as to avoid any off-axial heavily wearing movement of the caliper actuating piston relative to said cylinder body.

Claims

1. A disk brake unit comprising a pair of brake pads, a cylinder body fixedly mounted on a non-rotatable part of a vehicle and containing a pair of opposingly slidable pistons therein, a caliper mounted on said cylinder slidably in a parallel direction relative to the longitudinal axis of said cylinder, one of said pistons actuating directly one of said brake pads during braking operation, the remaining piston actuating at the same time the opposite brake pad through said caliper, said unit being characterized by that supporting part and sliding part of said caliper relative to said cylinder boy formed practically independent from each other, said supporting part having elastic means for resiliently supporting said caliper, said sliding part having a length substantially equal to or larger than that of the effective length of said cylinder body.

2. The brake unit as set forth in claim 1, wherein said caliper is formed with a tongue which is coupled through a resilient sleeve having a cross-sectional configuration of a hollow cross with one of said piston adapted for actuation of said caliper-operating piston.