| 摘要 |
<p>1,202,277. Brake pistons and cylinders. ALFRED TEVES G.m.b.H. 31 Oct., 1967 [15 Nov., 1966], No. 49424/67. Headings F2E and F2F. In a spot-type disc brake a pin 5 disposed on the end of a brake cylinder 1 has a spring stop 7 at its free end 6 and has a non-circular crosssection shank 9 between the spring stop 7 and the end wall of the cylinder 1, a stop disc 10 is non-rotatably retained in the brake piston 2 and the stop disc 10 is also non-rotatably slidably mounted on the shank 9 of the pin by a non- circular hole in the stop disc 10 matching the cross-section of the shank 9. The brake piston 2 can move out of the brake cylinder 1 only by a particular amount corresponding substantially to the thickness of the brake pad 4 plus the brake clearance. The stop disc 10 is retained in the piston by a ring 11 and has a hexagonal aperture so as to be non-rotatable on the hexagonal shank 9. The spring stop 7 is formed by a stack of Belleville washers and when the spring stop 7 contacts the stop disc 10 the driver is provided with an indication that the brake pads require renewing.</p> |
