Tension clamp for three or more direction string networks

Apparatus for selectively clamping one string of a three or more direction oriented string network in a substantially planar opening defined by the frame of a game racket held in a support fixture to said support fixture, comprising:

• A. a mouth defined by opposing substantially planar surfaces of two jaws and associated means for coupling said jaws with said planar surfaces opposite each other,
• B. selectively operative means for biasing said opposed planar surfaces towards each other,
• C. selectively operative means for coupling said jaws to said support fixture and for supporting said jaws with respect to said frame so that a portion of said jaws extends through said planar opening,
• wherein the portion of said jaws adapted for extension through said planar opening between strings of said network, consist of a plurality of teeth, said teeth being defined by inter-tooth grooves having a width at least equal to a predetermined value and having angular orientations and spacings matching the angular orientations and spacings of strings crossing said one string in said string network when said biasing means is operative,
• wherein said teeth have substantially trapezoidal and triangular cross-sections characterized by equal base vertex angles.

Apparatus for selectively clamping two adjacent parallel strings of a three or more direction oriented string network in a substantially planar opening defined by the frame of a game racket, comprising:

• A. two mouths, each being defined by opposing substantially planar surfaces of a pair of jaws, and associated means for coupling the jaws of each of said pairs with said planar surfaces opposite each other,
• B. selectively operative means for biasing said opposed planar surfaces of each of said pairs of jaws towards each other,
• wherein a portion of the end of said jaws consist of a plurality of teeth adapted to extend through said planar opening between strings in said network, said teeth being defined by inter-tooth grooves having a width at least equal to a predetermined value and having angular orientations and spacings matching the angular orientations and spacings of strings crossing said two strings in said string network when said biasing means is operative,
• wherein said teeth have substantially trapezoidal and triangular cross-sections characterized by equal base vertex angles.

Apparatus for selectively clamping two adjacent parallel strings of a three or more direction oriented string network in a substantially planar opening defined by the frame of a game racket, comprising:

• A. two mouths, each being defined by opposing substantially planar surfaces of a pair of jaws, and associated means for coupling the jaws of each of said pairs with said planar surfaces opposite each other,
• B. selectively operative means for biasing said opposed planar surfaces of each of said pairs of jaws towards each other,
• wherein a portion of the end of said jaws consist of a plurality of teeth adapted to extend through said planar opening between strings in said network, said teeth being defined by inter-tooth grooves having a width at least equal to a predetermined value and having angular orientations and spacings matching the angular orientations and spacings of strings crossing said two strings in said string network when said biasing means is operative,
• wherein one jaw from each of said pairs are positioned back-to-back in a single element.