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NOVEL CLAMP METER WITH ROTARY MECHANISM FOR CLAMP JAWS

  • US 20100134094A1
  • Filed: 05/13/2008
  • Published: 06/03/2010
  • Est. Priority Date: 05/18/2007
  • Status: Active Grant
First Claim
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1. A novel clamp meter with rotary mechanism for clamp jaws comprising a main body that is made up ofa. a cover housing and a base housing, the two housings enclosing the measurement circuitry of the clamp meter;

  • b. a display screen, a function selection switch, and a set of push buttons to select testing parameters are housed within the housings and electrically connected to said measurement circuitry,c. two input terminals,d. a clamp housing that houses a pair of clamp jaws, each of said clamp jaws containing electrical coils, said coils being electrically connected to said circuitry;

    said clamp jaws being connected to said clamp housing through an arrangement comprising a pivot sleeve and pivot screw for each of the clamps, and the two jaws from said pair of clamp jaws being connected to each other through a central hinge arrangement wherein each of the said jaws have a loop that are positioned axially, through which a pin, which is made of metal or any other suitable material such as hard plastic, hard rubber, or wood, passes to form the hinge arrangement,e. a trigger that is used for opening and closing said clamp jaws, wherein when pressed, the trigger pushes the trigger-end of a pusher, said pin being fixedly attached to the other end of said pusher such that when said trigger is operated, said pusher gets pushed along its axis, thereby moving said pin in the same direction, and wherein said pin, through the central hinge arrangement, makes the clamp jaws rotate in their own plane, thereby opening them around the pin,f. a compression spring for each of said jaws, wherein said compression springs are so located that said clamp jaws, in their open position, press against said compression springs, and whereby, upon the release of said trigger, said compression springs push said clamp jaws back into their closed position,g. a rotary mechanism that allows rotation of said clamp jaws together around the longitudinal axis of said pusher, wherein said novel rotary mechanism comprises;

    i. a disk that is formed integrally with the clamp housing, wherein the periphery of the disk is so shaped that it forms alternate protrusions and grooves in the plane of the disk,ii. ball and catch arrangements, at least one in number, preferably two, that are provided on diametrically opposite sides of the disk, wherein each ball is provided with a locking spring such said ball is secured in a groove when not under application of a rotational force while turning said pair of clamp jaws.

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