| 摘要 |
1,036,829. Oscillatory vane actuators. HOUDAILLE INDUSTRIES Inc. Aug.14, 1964 [Sept. 17, 1963], No. 33270/64. Heading F1F. An oscillatory vane actuator comprising a body 5, Fig. 1 (not shown), having a cylindrical bore 7 closed at its ends and a wing-shaft 10 having one or more wing vanes 11 co-operable with a corresponding number of abutments 12, as shown two vanes and two abutments, includes in the body 5 diametrically opposite longitudinally extending grooves 20 having ramp-like sides to permit without compression the reception of the projecting portions of resilient seals 14, 17, housed in recesses 15, 18 in the vanes and abutments respectively. Each seal 14, 17 made of P.T.F.E. or nylon is urged outwardly by a rubber O-ring, and on relative rotation of the vanes and abutments with respect to the body the seal rides on the ramp and its O-ring is compressed to sealingly engage the body. To permit the vanes and abutments to be slid into the body in one operation, two pairs of diametrically opposite longitudinally extending grooves 20 are formed in the body. The grooves being spaced apart so that when the abutments are finally located by dowels 13 the grooves are all substantially covered by the abutments. |
