B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
121/75
B60T 13/56 (2006.01) F01B 19/00 (2006.01)
Patent
CA 1289021
ABSTRACT OF THE INVENTION A diaphragm (32) for a servomotor which separates the interior of first (12) and second 114) shells into first (18) and second (20) chambers. The diaphragm (32) has an external bead (30) with first rib (31) having first (40) and second (42) sealing surfaces and an annular projection (46) extending therefrom which engages the rear shell (14) or divider (15) to guide the first (40) and second (42) sealing surfaces into contact with corresponding surfaces on the first (12) and second (14) shells. When the first (12) shell is connected to the second (14) shell, the projection (46) is compressed into the first rib (31) while a portion (33, 35) of the first rib (31) expands into cavities (37, 39) on both sides of the annular projection (46) to develop internal resiliency that uniformly acts on the first (40) and second (42) sealing surfaces. The diaphragm (32) has an internal bead (34) with a second rib (56) that snaps into a groove (36) on the hub (38) located in the servo- motor. The internal head (34) has a rib (56) with a flange (82) thereon. The flange (82) has a scalloped surface (84) which allows the rib (56) to expand radi- ally and be positioned in the groove (36) while pro- viding sufficient axial rigidity to hold a backing plate (70) against a force transmitting shoulder (88) on the hub (38). Leading (64) and trailing (72) edges and sealing rings (78, 80) engage the hub (38) within the groove (36) to seal the first chamber (18) from the second (20) chamber.
548157
Harrison Gregory K.
Rossigno Louis P.
Shellhamer Robert F.
Allied-Signal Inc.
Macrae & Co.
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