US 5,535,867 AGranted

Torque regulating coupling

OwnerAlbert V. Coccaro, Paul C. Scifoinventors

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Abstract

A torque regulating coupling for use with an impact wrench drive and socket, the coupling for connecting an impact wrench drive to the a wrench socket used to tighten threaded fasteners so that the maximum torque applied to the fastener can be limited to a predetermined value. The coupling featuring a slider, movably mounted within in a coupling body which is adapted to be connected to the wrench drive. Additionally, the coupling includes a multi-element, torque transmission member axially disposed within the coupling body and arranged to be connected to a wrench socket for engaging the fastener. Still further the coupling includes a an adjustment mechanism that has a sleeve and position pin in one form and sleeve and gear train in another for locating the slider along the length of the transmission member to regulate the maximum amount of torque delivered from the wrench drive to the fastener.

Claims12

Dependent claims

An impact wrench torque regulating coupling, the coupling comprising:

a body means for receiving torque from an impact wrench drive;
a torque transmission means for transmitting torque supplied by the wrench drive to a wrench socket, the torque transmission means including a plurality of transmission elements combined to provide torque transmission loss that is dependent upon the point on the transmission means at which the torque is applied, the plurality of transmission elements being arranged in a stack to form a transmission member that extends axially relative to the body means;
contacting means for applying torque at a point on the transmission means, the contacting means being connected to the body means and the transmission means;
and
wrench socket engaging means for connecting the transmission means to the wrench socket such that torque applied to the body means is communicated to the transmission means and the transmission means communicates at least a portion of the torque applied to the body means at the socket engaging means, the portion of the torque communicated by the transmission means depending on the point on the transmission means at which the torque is applied.

2 more elements

Dependencies are inferred from the claim text.