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US4979842A Expired / Lapsed US ⏱️ 0.0 years remaining

Hydraulically actuatable shrinking disc, particularly for force transmitting connection of a hub with a shaft

Assignee: Tas Schafer GmbH Technik fur Antrieb und Steuerung
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Filing: 1989-07-17
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Granted: 1990-12-25
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Expires: 2009-07-17
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Abstract

Abstract A hydraulically actuatable shrinking disc, especially for a force transmitting connection of a hub having a cylindrical outer surface with a shaft comprises an inner ring arranged to be located on a cylindrical outer surface of a hub and having a double-conical outer peripheral surface, two pressure rings which are arranged axially opposite to one another in a displaceable and clampable manner on the inner ring and have inner conical surfaces which corresponds to the outer peripheral surface of the inner ring, the pressure rings forming therebetween a pressure chamber for a pressure fluid, the pressure rings being mirror-symmetrical in their cross-section and each formed with a cylindrical outer peripheral surface, the pressure rings being provided with openings which serve as pressure medium passages, a clamping ring which serves as an abutment for the pressure rings and surrounds the latter, the clamping ring having an outer peripheral surface which is provided with a connecting opening for the pressure fluid and subdivided into two pressure medium passages which form an obtuse angle relative to a radial plane and extend inside the clamping ring so as to open at an inner peripheral surface of the clamping ring, the pressure medium passages of the pressure rings extend from the inner peripheral surface to the outer peripheral surface of the pressure ring and form relative to a radial plane an angle which is opposite to the angle between the pressure medium passages of the clamping ring, the pressure medium passages of the pressure rings open at the outer peripheral surface of the pressure rings and the pressure medium passages of the clamping ring open at the inner peripheral surface of the clamping ring so as to communicate with one another, and so that the pressure medium passages of the pressure rings supply the pressure fluid to the inner and outer peripheral surfaces of the pressure rings and through the latter into the pressure chamber.

Inventors

  • 👤 Wolfgang Miller
  • 👤 Udo Schafer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 12:54
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/09; F16D1/091; F16D2001/0906; Y; Y10; Y10T; Y10T403/00; Y10T403/16; Y10T403/1633

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 322 words
A hydraulically actuatable shrinking disc, especially for a force transmitting connection of a hub having a cylindrical outer surface with a shaft, comprising an inner ring arranged to be located on a cylindrical outer surface of a hub and having a double-conical outer peripheral surface; two pressure rings which are arranged axially opposite to one another in a displaceable and clampable manner on said inner ring and have inner conical surfaces which corresponds to the outer peripheral surface of said inner ring, said pressure rings forming therebetween a pressure chamber for a pressure fluid, said pressure rings being mirror-symmetrical in their cross-section and each formed with a cylindrical outer peripheral surface, said pressure rings being provided with openings which serve as pressure medium passages; a clamping ring which serves as an abutment for said pressure rings and surrounds the latter, said clamping ring having an outer peripheral surface which is provided with a connecting opening for the pressure fluid and subdivided into two pressure medium passages which form an obtuse angle relative to a radial plane and extend inside said clamping ring so as to open at an inner peripheral surface of said clamping ring, said pressure medium passages of said pressure rings extend from an inner peripheral surface to said outer peripheral surface of said pressure rings and form relative to a radial plane an angle which is opposite to said angle between said pressure medium passages of said clamping ring, said pressure medium passages of said pressure rings having openings on said outer peripheral surface of said pressure rings and said pressure medium passages of said clamping ring having openings on said inner peripheral surface of said clamping ring so as to communicate with one another, and so that said pressure medium passages of said pressure rings supply the pressure fluid to said inner and outer peripheral surfaces of said pressure rings and through the latter into said pressure chamber.
Claim 2
Dependent Claim 322 words
A hydraulically actuatable shrinking disc, especially for a force transmitting connection of a hub having a cylindrical outer surface with a shaft, comprising an inner ring arranged to be located on a cylindrical outer surface of a hub and having a double-conical outer peripheral surface; two pressure rings which are arranged axially opposite to one another in a displaceable and clampable manner on said inner ring and have inner conical surfaces which corresponds to the outer peripheral surface of said inner ring, said pressure rings forming therebetween a pressure chamber for a pressure fluid, said pressure rings being mirror-symmetrical in their cross-section and each formed with a cylindrical outer peripheral surface, said pressure rings being provided with openings which serve as pressure medium passages; a clamping ring which serves as an abutment for said pressure rings and surrounds the latter, said clamping ring having an outer peripheral surface which is provided with a connecting opening for the pressure fluid and subdivided into two pressure medium passages which form an obtuse angle relative to a radial plane and extend inside said clamping ring so as to open at an inner peripheral surface of said clamping ring, said pressure medium passages of said pressure rings extend from an inner peripheral surface to said outer peripheral surface of said pressure rings and form relative to a radial plane an angle which is opposite to said angle between said pressure medium passages of said clamping ring, said pressure medium passages of said pressure rings having openings on said outer peripheral surface of said pressure rings and said pressure medium passages of said clamping ring having openings on said inner peripheral surface of said clamping ring so as to communicate with one another, and so that said pressure medium passages of said pressure rings supply the pressure fluid to said inner and outer peripheral surfaces of said pressure rings and through the latter into said pressure chamber.
Claim 3
Dependent Claim 51 words
A shrinking disc as defined in claim 1, wherein said openings of said pressure medium passages of said clamping ring have an axial length which in the region of a connection and transition to said pressure medium passages of said pressure rings corresponds to an axial displacement of said pressure rings.
Claim 4
Dependent Claim 78 words
A shrinking disc as defined in claim 1, wherein said angle between said pressure medium passages of said pressure rings is such that said openings on said cylindrical outer surface of each of said pressure rings is located closer to an outer end side of a respective one of said pressure rings than said pressure chamber, and said openings on said conical inner peripheral surface of each of said pressure rings are located closer to said pressure chamber.
Claim 5
Dependent Claim 36 words
A shrinking disc as defined in claim 1, wherein said openings of said pressure medium passages of said pressure rings are formed as ring grooves in said inner and outer peripheral surfaces of said pressure rings.
Claim 6
Dependent Claim 18 words
A shrinking disc as defined in claim 1; and further comprising sealing elements arranged in said pressure rings.
Claim 7
Dependent Claim 21 words
A shrinking disc as defined in claim 5, wherein said sealing elements are formed as O-rings arranged in said pressure rings.
Claim 8
Dependent Claim 28 words
A shrinking disc as defined in claim 1, wherein said clamping ring has an inner peripheral surface which is provided with a centering projecting formed as a collar.
Claim 9
Dependent Claim 42 words
A shrinking disc as defined in claim 1, wherein one of said pressing rings is provided with an axial opening for a pressure fluid, said axial opening having one end which opens into said pressure chamber and another end which is closeable.
Claim 10
Dependent Claim 26 words
A shrinking disc as defined in claim 8; and further comprising a valve which closes the other end of said axial opening of said pressure rings.
Claim 11
Dependent Claim 24 words
A shrinking disc as defined in claim 1; and further comprising means for arresting said pressure rings in their tensioned position against undesired release.
Claim 12
Dependent Claim 18 words
A shrinking disc as defined in claim 10, wherein said arresting means are formed as hydraulic arresting means.
Claim 13
Dependent Claim 18 words
A shrinking disc as defined in claim 10, wherein said arresting means are formed as pneumatic arresting means.
Claim 14
Dependent Claim 18 words
A shrinking disc as defined in claim 10, wherein said arresting means are formed as mechanical arresting means.

References Cited (Backward Citations)

SU267269A1 Cited
US2764437A Cited
US4425050A Cited
US4702635A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-12-24 1994-06-25 1994-12-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-12-24 1998-06-25 1998-12-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-12-24 2002-06-25 2002-12-25 $7700.00 Window Closed / Lapsed

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