Cable shear and clamp system
OwnerAlan Rodriguezinventor
Life of this patent
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Abstract
A shearing device for tendons such as wire, rope or cables. The device incorporates a shear block and clamping system having a first cylindrical block adapted for engaging an eccentric recess formed in a housing. Both the housing and the block are constructed with apertures therethrough adapted for receiving the tendon therein. Eccentric misalignment of the apertures is provided by relative rotation between the housing and the block to therein provide the shearing action. A clamp is disposed outwardly of the block for securing the tendon to be terminated. In this manner, a post-tension tendon of the type utilized in concrete construction or the like, can be safely terminated and controlled within a recessed region with efficiency and dimensional control.
Claims20
A shear block and clamp assembly for the controlled termination of a cable extending outwardly of a formation, said assembly comprising:
- a shear block housing having an eccentrically positioned recess formed therein, said recess having a generally cylindrical cross-sectional configuration;
- a generally cylindrical block adapted for being received within said cylindrical, eccentric recess formed within said housing;
- said housing being constructed with a central aperture formed therethrough, said aperture opening into said eccentric recess at an off-centered position therein;
- said cylindrical block being constructed with an aperture formed therethrough, said aperture being formed in an off-centered position therein for alignment with said aperture opening into said recess of said housing in a first positionable mode whereby a cable may be received therethrough;
- means for positioning said housing adjacent said formation in receipt of said cable extending outwardly thereof;
- means for imparting relative rotation between said block and said housing whereby said aperture of said block may be positioned out of registry with said recess of said housing for terminating said cable at a select location therealong;
- a clamp adapted for receipt of said cable therein and positioning relative to said shear block housing;
- and
- means associated with said clamp for engaging said cable and providing pressure thereagainst for securing said cable during the termination of said cable.
The apparatus as set forth in claim wherein said assembly further includes a cutting blade adapted for being received between said cylindrical block and said recess of said housing, said blade having an aperture formed therethrough for receiving said cable and providing a cutting surface against which said cable may be sheared during relative rotation between said block and said housing.
A shear block assembly for the controlled cold shear of a tendon comprising:
- a shear block housing having an eccentrically positioned recess formed therein with an aperture formed therethrough;
- a generally cylindrical block adapted for being received within said recess and having an aperture formed therethrough adapted for positioning in registry with said aperture of said housing in a first positionable mode;
- means for imparting relative rotation between said block and said housing whereby said aperture of said block may be positioned out of registry with said aperture of said housing in a second positionable mode;
- means for maintaining the axial relationship between said block and said housing during said relative rotation therebetween for effecting cold shear of said tendon extending through said apertures thereof whereby said tendon may be terminated at a select location therealong;
- a clamp adapted for receipt of said tendon therein and positioning relative to said housing;
- and
- means associated with said clamp for engaging said tendon within said aperture and providing pressure thereagainst for securing said tendon during the termination thereof.
A method for clamping and the cold shear termination of a tendon, said method comprising the steps of:
- providing a housing having an eccentrically positioned recess formed therein with an aperture formed therethrough;
- providing a generally cylindrical block having an aperture formed therethrough adapted for positioning in registry with said aperture of said housing in a first positionable mode;
- receiving said block within said recess of said housing;
- receiving said tendon through said block and said housing with a portion thereof extending outwardly therefrom for termination;
- securing said outwardly extending tendon portion relative to said block for preventing said tendon portion from unreeling;
- imparting relative rotation between said block and said housing whereby said aperture of said block may be positioned out of registry with said aperture of said housing in a second positionable mode;
- and
- maintaining the axial relationship between said block and said housing during said relative rotation therebetween for effecting cold shear of said tendon extending through said apertures thereof whereby said secured tendon may be terminated at a select location therealong.
A cable clamping member for use with a cable shear of the type wherein first and second blocks are rotated relative to each other for the termination of a cable extending therethrough, said clamp comprising:
- a housing;
- a plurality of clamping jaws disposed within said housing;
- means securing said clamping jaws one to the other and biasing said clamping jaws toward a central axial region;
- means for securing said cable to be terminated within said housing between said clamping jaws;
- and
- means for securing said housing relative to said cable shear.
Dependencies are inferred from the claim text.