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Clamp device

  • US 9,863,564 B2
  • Filed: 07/11/2013
  • Issued: 01/09/2018
  • Est. Priority Date: 07/25/2012
  • Status: Active Grant
First Claim
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1. A clamp device in which a main clamp body comprises a pair of clamp members, each clamp member having a tightening groove delimited by a pair of groove-delimiting wall sections;

  • the tightening grooves each having a U- or V-shaped transverse cross-section; and

    first and second lobe parts disposed integrally with the pair of clamp members in the vicinity of end portions of the tightening grooves;

    the main clamp body presenting a ring shape when a bolt and a nut are mounted in position on the lobe parts disposed facing each other;

    the bolt and the nut when screw-tightened relative to each other developing a force of fastening together at least two objects placed within the tightening grooves;

    wherein,each of the first and second lobe parts comprises;

    a pair of sidewall sections respectively contiguous to the pair of groove-delimiting wall sections that delimit the tightening groove;

    a curved outer end wall section interconnecting the pair of sidewall sections at an outer end of each lobe part; and

    a seat surface wall section contiguous to the pair of sidewall sections and to the outer end wall section;

    the seat surface wall section providing a seat surface for the bolt or the nut;

    an arcuately shaped fulcrum part being formed on the curved outer end wall section of each lobe part so as to extend horizontally along a curving direction of the outer end wall section,end portions reaching the side wall in the fulcrum part projecting from the side wall,each fulcrum part in contact with the other when fastened and extending outwardly to exceed a width of each lobe part, andends of the clamp members opposite the lobe parts being hingedly connected by a connecting ring.

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