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Camera supporting device

  • US 4,795,118 A
  • Filed: 10/02/1987
  • Issued: 01/03/1989
  • Est. Priority Date: 02/24/1987
  • Status: Expired due to Fees
First Claim
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1. A camera supporting device adapted to be mounted on a tripod, comprising:

  • a base mountable on a tripod;

    a post provided on said base, said post having a top end;

    a ball mounted on said top end of said post;

    a cylindrical ball case for rotatably holding said ball, said ball case having a pair of open ends, one of said open ends having an edge on the inside thereof in contact with said ball, said ball case having a longitudinal axis;

    a ball retainer located at the other of said open ends of said ball case and being movable along said axis of said ball case, said ball retainer having a surface in contact with said ball;

    a body connected to said ball case and having a shoe-mounting surface;

    spring means located inside said body for urging said ball retainer toward said ball;

    a link mechanism coupled to said body for driving said ball retainer in a direction such that said ball retainer moves away from said ball, against the urging force of said spring means;

    a grip coupled to said body and shaped so as to permit a one-handed hold thereof;

    a trigger rockably coupled to said grip, and being coupled to said link mechanism for moving said link mechanism in a direction such that said ball retainer moves away from said ball when said trigger is squeezed;

    a shoe fitted with a camera screw, said camera screw having an extreme end projecting from an upper surface of said shoe; and

    shoe fixing/releasing means for detachably fixing said shoe to said shoe-mounting surface of said body;

    said shoe-fixing/releasing means including;

    an inward circular flange formed on a bottom side of said shoe, said flange extending along a circumference of a circle surrounding said camera screw;

    at least one notch in said inward flange;

    a lock member mounted on said body for vertical movement, said lock member having, at an upper end thereof, a hook means for engaging said flange and adapted to enter said notch when said shoe is rotated to a predetermined release position, said flange being clamped between said hook means and said shoe-mounting surface when said lock member is lowered;

    a sliding plate mounted on said body and being movable back and forth relative to said body;

    link means connecting one end of said sliding plate to said lock member for raising said lock member when said sliding plate is moved from a first position to a second position, and for lowering said lock member when said sliding plate is moved from said second position to said first position; and

    an operating member attached to said grip, said operating member being coupled to the other end of said sliding plate for reciprocating said sliding plate between said first and second positions thereof.

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