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US 4,264,229 AGranted
Coupling
AssigneeCurt Falk AB
InventorsCurt G. Falk, Ulla K. Falk
Life of this patent
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AssigneeCurt Falk AB
InventorsCurt G. Falk, Ulla K. Falk
Estimating the term…
A coupling includes at least one thin-walled sleeve which forms an axially extending defining wall of a substantially annular chamber. The chamber is arranged to be supplied with a pressure medium to elastically deform said sleeve in a radial direction into clamping engagement with a surface on an element which is to be connected to the coupling, the shape and dimension of said surface substantially corresponding to the shape and dimension of a surface on the sleeve remote from said chamber. The chamber has extending therefrom a channel arrangement which is arranged to cooperate with coupling-release means which can be activated by relative movement between said surfaces, or by a given torsional deformation thereof, to a state in which pressure medium can flow through said channel arrangement from said chamber to relieve the chamber of pressure acting therein.
A one-piece coupling of the kind which includes at least one thin-walled sleeve which forms an axially extending defining wall of a radially narrow annular chamber, the chamber being arranged to be supplied with a pressure medium for substantially elastically deforming said sleeve so that a surface of said sleeve is moved in a radial direction into direct clamping engagement with a smooth complementary shaped surface on an element which is to be drivingly connected to the coupling, wherein the chamber has extending outward therefrom a channel arrangement which is arranged to cooperate with coupling-release means which is activatable by relative movement between said surfaces, to a state in which pressure medium can flow through said channel arrangement from said chamber, to relieve the chamber of pressure acting therein, so that said element is able to rotate independently of the coupling.
Dependencies are inferred from the claim text.