GB847590A - Improvements in liquid cooled brake, clutch and like frictional mechanism - Google Patents

Abstract

847,590. Brake cooling systems. SANFORD, R. S., CASTLER, R. H., EAMES, J. O., SEDERGEN, E. D., and EATON, W. A., Nov. 18, 1958 [Dec. 30, 1957], No. 14719/59. Divided out of 847,589. Class 103 (1). In a liquid cooling system for brakes, liquid passes into the brakes along a generally axially directed passage 23 therein and then passes through a radially directed passage 21 into annular groove 41 on the left hand side of the brake. A brake drum carrier 24 is secured to the rotor for rotation therewith and has an outer cylindrical surface 26 wherein there is supported by the tips of axially directed integral parallel teeth 29 a brake drum 28. The cooling liquid may then flow axially along the annular grooves 41 to the annular groove 42 producing in such passage an efficient heat removal from the brake drum due to its extended cooling surfaces. From groove 42, the liquid enters annular spaces 27, is picked up by the opening 47 which acts as a scoop, and is discharged generally axially along passage 44. In Fig. 13, an arcuate internal brake shoe of rigid type, is shown in connection with a brake drum in which the brake lining is carried by the drum and the metal friction element on the shoe. The shoe has friction element 89 of high thermal conductivity metal. The element 89 has its outer surface formed with teeth 90 so that cooling liquid may flow generally circumferentially in the valleys between the teeth and the supporting surface 88 on the brake shoe member. Fig. 14 shows a disc brake having an extended cooling surface in tooth form and the back face of the metal friction member and Fig. 16 shows a manner in which such cooling surfaces may be further extended by indenting the tooth surfaces themselves with V-shaped grooves 127.