Expansible chamber devices – Rectilinearly moving working member and coaxial or parallel... – Element extends through working member portion
Patent
1990-03-20
1991-08-13
Look, Edward K.
Expansible chamber devices
Rectilinearly moving working member and coaxial or parallel...
Element extends through working member portion
92116, 92113, 92DIG1, 74 99A, F01B 300
Patent
active
050386727
ABSTRACT:
The apparatus includes a steeped axially displaceable piston in a stepped cylinder housing, and a rotary shaft is axial fixed relative to the housing and extends into the piston reduced diameter end portion. The piston reduced diameter portion and the housing having a cooperating set of first teeth while the piston and shaft have a cooperating set of second teeth whereby at least one set of the teeth serve to convert axial movement of the piston into rotary motion of the shaft. The shaft is supported in the housing adjacent where it exits from the housing by a first bearing while a second bearing is provide radial adjacent to the juncture of the housing enlarged and reduced diameter portions that supports the interior end portion of the shaft in the piston reduced diameter portion. A third radial bearing is provided between the enlarged diametric portion and the piston enlarged diametric portion in axial remote relationship to the first bearing. A fourth radial bearing is provided between the piston reduced portion and the housing and in the housing reduced diameter portion adjacent its juncture with the enlarged diametric portion. As a result when a radial force acts on the shaft exterior of the housing, the resulting torque is taken up by the first and second bearings.
REFERENCES:
patent: B429434 (1976-02-01), Burkhardt et al.
patent: 2225790 (1940-12-01), Nardone
patent: 2688951 (1954-09-01), Sears
patent: 2951558 (1960-09-01), Schuster
patent: 3141390 (1964-07-01), McAlpine
patent: 4373426 (1983-02-01), Weyer
patent: 4603616 (1986-08-01), Zajae
patent: 4745847 (1988-05-01), Voss
Danfoss A/S
Easton Wayne B.
Johnson Clayton R.
Look Edward K.
Lopez F. Daniel
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