Fluid actuated coupling assembly
AssigneeForenade Fabriksverken
InventorCurt Gunnar Falk
Life of this patent
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Abstract
A fluid actuated coupling assembly for releasably coupling together of at least two elements and preferably transmitting torque between them. An inner metal sleeve and an outer metal sleeve are secured together to define a very thin gap between them. Means are provided to pressurize that gap to cause radial expansion of the gap and the sleeves.
Claims9
A fluid actuated coupling assembly for releasably coupling at least two elements together preferably for transmitting torque therebetween comprising an outer metal sleeve, an inner metal sleeve concentrically mounted within the outer sleeve and secured thereto at least at one end and defining a recess or gap between the two sleeves which is closed at said one end of the sleeves, means for introducing a pressure fluid in said recess and means for preventing exhaust of said pressure fluid, said secured sleeves and said means for preventing exhaust of said pressure fluid defining a volume which includes said recess volume and which is slightly larger than said recess volume, the radial dimension of the sleeve walls of both sleeves being variable by changing the pressure on the pressure fluid on the said recess, the thickness of the recess in the non-pressurized state being determined by the following formula:
- t/d = 2 .times. 10.sup.-2
- where t equals the width of the recess and d equals the average diameter of the recess.
Dependencies are inferred from the claim text.