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Title: US3915479: Connector for flexible conduit
[ Derwent Title ]

Country: US United States of America

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7 pages

Inventor: Sotolongo, Thomas J.; Red Bank, NJ

Assignee: Thomas & Betts Corporation, Elizabeth, NJ
other patents from THOMAS + BETTS CORPORATION (573320) (approx. 679)
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Published / Filed: 1975-10-28 / 1974-11-29

Application Number: US1974000528413

IPC Code: Advanced: F16L 33/22;
Core: more...
IPC-7: F16L 33/20;

U.S. Class: Current: 285/149.1; 285/249; 285/382.7;
Original: 285/158; 285/249; 285/382.7;

Field of Search: 285/249,248,382.7,259,250,158,162

Priority Number:
1974-11-29  US1974000528413

Abstract: A connector fitting preferably for flexible nonmetallic conduit includes, in combination, an externally threaded hollow body member, a hollow tapered conduit supporting anvil, a resilient compression ring, and a gland nut, which elements may be preassembled to provide a structure in which the wall of the flexible conduit may be interposed between the outer surface of the anvil and the inner surface of the compression ring within one end of the body member, and the gland nut threadably tightened to radially compress the compression ring inwardly against the outer surface of the conduit which is internally supported by the anvil. Coacting inclined surfaces on the body member, gland nut, and the enlarged central portion of the compression ring serve to selectively direct the radial component of the forces applied to the compression ring which is internally recessed to permit uniform controlled collapse of the ring about the periphery of the conduit.

Attorney, Agent or Firm: Teschner, David ; Woldman, Jesse ;

Primary / Asst. Examiners: Callaghan, Thomas F.;

Family: None

First Claim:
Show all 13 claims
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:     1. A connector for flexible conduit comprising, in combination: a hollow elongate body member having a first externally threaded portion adjacent a first end, a second externally threaded portion adjacent its second end, and an enlarged portion therebetween for gripping said body member; a hollow tubular anvil having a continuously longitudinally tapered body portion of uniform thickness and a resilient annular lip portion, said lip portion extending outwardly from and circumscribing said second end of said body portion, said second end having a uniform inner diameter, said second end inner diameter being larger than the inner diameter of said first end, said anvil being arranged for insertion within said body member generally adjacent said second threaded portion thereof, said lip portion being proportioned to tightly engage the inner surface of said body member to maintain said anvil in a given position within said body member; a resilient plastic hollow elongate compression ring having an enlarged annular central portion and first and second skirt portions, said first and second skirt portions extending longitudinally outwardly in opposite directions from said central portion, said central portion having an annular inclined outer surface extending respectively from each side of said central portion and communicating with a respective one of said first and second skirt portions, said compression ring having an interior surface having a series of spaced, selectively formed recessed portions extending inwardly from each end of said compression ring towards said central portion a given distance to selectively reduce the thickness of said compression ring thereat, at least one of said compression ring first and second skirt portions having an outer diameter generally equal to said body member second end inner diameter and arranged to fit snugly within said body member generally adjacent said second threaded end thereof; and a gland nut having a first end and a second end, said gland nut having an internally threaded portion adjacent said first end thereof and an inner annular surface having a generally uniform diameter and given length adjacent said second end thereof, said internally threaded portion and said inner annular surface of said gland nut being joined by a selectively inclined annular surface, said gland nut internally threaded portion being threadably engageable with said body member second externally threaded portion and said gland nut annular surface of generally uniform diameter being arranged to closely overlie an extending one of said compression ring first and second skirt portions upon the assembly of said compression ring into said body member and the threaded attachment of said gland nut to said body member second threaded portion; the internal diameter of said compression ring and the external diameter of said anvil body portion being proportioned with respect to one another to provide a uniformly tapering annular gap extending the entire length of said anvil body portion for receiving the wall of a flexible conduit therebetween wherein, upon the assembly of said anvil, compression ring, and gland nut to said body member, one end of a flexible conduit may be inserted into said body member so that its wall is disposed in said tapered annular gap intermediate said anvil and said compression ring, and said gland nut tightened onto said body member second threaded portion to radially compress said compression ring to a given tightness about the exterior surface of the contained wall of the flexible conduit, said body member second threaded portion terminating at an end portion having an inclined annular surface tapering inwardly from the exterior surface of said end portion to the interior surface of said body member, said body member end portion inclined surface being disposed at a given angle to the longitudinal axis of said body member substantially equivalent to the angle of inclination of at least one of said compression ring inclined surfaces.

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Description: Show description

Forward References: Show 12 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (12)   |   Backward references (9)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 3pp US2152975  1939-04 Sanford   Hose coupling
Get PDF - 4pp US2344698* 1944-03 Howe    
Get PDF - 2pp US2973974* 1961-03 Disney    
Get PDF - 4pp US2974980* 1961-03 Boyle    
Get PDF - 4pp US3219367  1965-11 Franck   Tube connector with permanently assembled sleeve and nut elements
Get PDF - 18pp US3378282  1968-04 Demler   Tube coupling
Get PDF - 5pp US3659880  1972-05 Goldsobel   CONNECTOR FOR FLEXIBLE CONDUIT
Get PDF - 4pp US3830531  1974-08 Burge  Parker-Hannifin Corporation COUPLING FOR FLEXIBLE TUBES
Get PDF - 7pp US3834742  1974-09 McPhillips  Parker-Hannifin Corporation TUBE COUPLING
  * some details unavailable
Foreign References:
Publication Date IPC Code Assignee   Title
  CA0723052 1965-12       
  SW0204859 1965-04       

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