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GRAVITY SWITCH ASSEMBLY

  • US 3,651,290 A
  • Filed: 06/01/1970
  • Issued: 03/21/1972
  • Est. Priority Date: 06/01/1970
  • Status: Expired due to Term
First Claim
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1. A gravity actuated control apparatus for disposition on a tubular member or the like for controlling the operation of welding equipment and the like mounted with the apparatus for movement relative to a tubular member, comprising:

  • a. a carriage;

    b. said carriage having means therewith for substantially arcuate movement of said carriage relative to a tubular member;

    c. a control unit mounted on said carriage for sensing preselected peripheral positions of said carriage with respect to a tubular member upon which said carriage is mounted, said control unit comprising;

    1. a support;

    2. an actuating assembly rotatably mounted on said support for at least partial rotational movements relative to said support;

    3. a weight portion eccentrically disposed with said actuating assembly to cause said actuating assembly to remain in substantially the same position during relative rotational movement of said support due to the force of gravity acting on said weight portion;

    4. at least three switches mounted at circumferentially spaced locations on said support;

    5. at least three actuating members, each actuating member for contacting a different one of said switches, said actuating members mounted at predetermined positions with said actuating assembly; and

    6. means for mounting said switches and actuating members for causing each of said actuating members to engage a different one of said switches during movement of said support means relative to said actuating assembly.

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