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US3720429A Expired / Lapsed US ⏱️ 0.0 years remaining

Coupling

Assignee: Ringfeder GmbH
•
Filing: 1971-03-08
•
Granted: 1973-03-13
•
Expires: 1991-03-08
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Abstract

Abstract AN OUTER ELASTIC SPLIT RING CONCENTRICALLY AND WITH CLEARANCE SURROUNDS AN INNER ELASTIC SPLIT RING. THE RINGS EACH HAVE AN AXIAL GAP AND THE AXIAL GAPS ARE RADIALLY ALIGNED WITH ONE ANOTHER. THE RINGS DEFINED WITH ONE ANOTHER TWO AXIAL CLEARANCES WHICH TAPER IN OPPOSITE AXIAL DIRECTIONS INWARDLY TOWARDS ONE ANOTHER AND IN EACH OF WHICH AN INTERMEDIATE SPLIT RING OF WEDGE-SHAPED CROSS-SECTION IS RECEIVED. THESE SPLIT RINGS CAN BE DRAWN AXIALLY TOGETHER BY SUITABLE BOLTS WHICH CONNECT THEM, TO THEREBY RADIALLY EXPAND THE OUTER ELASTIC SPLIT RING AND RADIALLY CONTRACT THE INNER ELASTIC SPLIT RING. IN THE RADIALLY ALIGNED AXIAL GAPS OF THESE FOUR RINGS THERE IS LOCATED A TORQUE-TRANSMITTING MEMBER WHICH AT LEAST SUBSTANTIALLY FILLS THESE GAPS AND IS CONNECTED WITH THE REMAINDER OF THE COUPLING SO AS TO BE RETAINED IN ITS SELECTED POSITION RELATIVE THERETO. D R A W I N G

Inventors

  • 👤 U Kloren
  • 👤 J Friedrichs
  • 👤 K Schropfer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 23:22
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/09; F16B; F16B3/00; F16B3/06; F16D1/093; F16D1/094; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7049; Y10T403/7051; Y10T403/7052; Y10T403/7056; Y10T403/7058

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-03-12 1976-09-11 1977-03-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-03-12 1980-09-11 1981-03-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-03-12 1984-09-11 1985-03-13 $7700.00 Window Closed / Lapsed

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