Bulb screw-jointing seat with symmetric segmental arc thread

Bulb screw-jointing seat with symmetric segmental arc thread

  • CN 2,255,676 Y
  • Filed: 02/14/1996
  • Issued: 06/04/1997
  • Est. Priority Date: 02/14/1996
  • Status: Active Grant
First Claim
Patent Images

1. , the bulb screw-jointing seat that symmetrical arc shape screw thread is arranged, integrated screw-jointing seat (1) has the neck (12) of a trumpet-shaped opening portion (11) and a tubular, in neck (12) inwall, be provided with the screw thread that screws mutually with bulb, be embedded with contact chip (15) in the axial respective slot (14A) of neck (12) with (14B), it is characterized in that:

  • screw togather district (13) by having two groups of corresponding discontinuous arc shape screw threads (13A) and (13B) constituting with bulb screws mutually, arc shape screw thread (13A) and (13B) pairing central angle B below 90 degree, be embedded with the groove (14A) of contact chip (15) and (14B) be positioned at the arc shape screw thread (13A) of two correspondences and locating separately (13B) (14) axial.

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