Tube coupling

• US 3,201,149 A
• Filed: 12/01/1961
• Issued: 08/17/1965
• Est. Priority Date: 12/01/1961
• Status: Expired due to Term

• Current Assignee: Kenneth R. Bragg
• Original Assignee: Kenneth R. Bragg
• Inventors: Bragg, Kenneth R.
• Application Number:
  US04/156,336
• Time in Patent Office: 1,355 Days
• US Class Current: 285/39
• CPC Class Codes: F16L 19/00 Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts screw-threaded joints F16L15/00; F16L17/00 takes precedence; if using bolts or equivalent connecting means F16L23/00; electrically insulating F16L25/02; adjustable joints, joints allowing movement F16L27/00; specially adapted for pipes of brittle material F16L49/06
• CPC Class Codes: Y10T 403/20 with indicator or inspection means

Claims

1. A TUBE COUPLING HAVING MEANS PROVIDING FOR THE ATTACHMENT OF AT LEAST ONE TUBE THERETO, SAID COUPLING INCLUDING A TUBE COUPLING BODY HAVING AN EXTERNAL SCREW THREAD AT ONE END AND A WRENCH ENGAGING PORTION AT THE OTHER END, A LOCK RING AXIALLY SLIDABLY MOUNTED ON SAID TUBE COUPLING BODY BETWEEN THE ENDS THEREOF AND KEYED THERETO AGAINST RELATIVE ROTATION THEREWITH, A NUT THREADED ONTO SAID EXTERNAL THREAD AND HAVING AN ADJACENT END PORTION WITH RATCHET TEETH THEREON, SAID NUT ALSO HAVING A WRENCH ENGAGING PORTION ADJACENT SAID TEETH, A SPRING MEANS DISPOSED BETWEEN SAID WRENCH ENGAGING PORTION OF SAID TUBE COUPLING BODY AND SAID LOICK RING FOR URGING SAID LOCK RING TOWARD SAID NUT, SAID LOCK RING HAVING AN END PORTION ON WHICH THERE ARE FORMED RATCHET TEETH ENGAGEABLE WITH SAID NUT RATCHET TEETH FOR LOCKING SAID NUT AGAINST UNTHREADING ROTATION, SAID LOCK RING ALSO HAVING AN ANNULAR PORTION OF GREATER DIAMETER THAN SAID WRENCH ENGAGING PORTION OF SAID NUT, WHEREBY A WRENCH FITTED TO SAID WRENCH ENGAGING PORTION OF SAID NUT MAY BE MOVED AXIALLY THEREALONG INTO ENGAGEMENT WITH SAID ANNULAR PORTION ON SAID LOCK RING FOR MOVING SAID LOCK RING TO DISENGAGE SAID TEETH WHEREBY SAID NUT MAY BE UNTHREADED FROM SAID BODY, SAID WRENCH ENGAGING PORTION OF SAID TUBE COUPLING BODY BEING OF A DIAMETER AT LEAST AS GREAT AS SAID ANNULAR PORTION ON SAID LOCK RING WHEREBY A WRENCH MAY BE FITTED TO SAID BODY WRENCH ENGAGING PORTION WITHOUT INTERFERENCE FROM SAID LOCK RING.