Method for tightening fastener on axially connected rod-like members
AssigneeSumitomo Metal Industries, Ltd.
InventorAkira Yamazaki
Life of this patent
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Abstract
A method and apparatus for tightening fasteners adapted to combine two bars in a linear fashion. The apparatus includes a first spanner member for engaging a first fastener and a second spanner member for engaging a second fastener. A driving apparatus is provided for rotating the second spanner member and includes a ratchet arrangement and a linear driving apparatus for driving the ratchet arrangement. The first and second spanner members are connected by a separable connection permitting easy separation or assembly. Further, the orientation of the first spanner member is adjustable therefore providing an apparatus which can be applied to and removed from the coupling assembly for two bars in spite of the random rotational orientation of the fasteners.
Claims1
A method of tightening nuts on axially connected rod-like members utilizing a tightening apparatus of the type wherein a first spanner member to fit a nut to be rotated in a first direction is rotatably fixed relative to a main body member;
- a second spanner member to fit another nut to be rotated in a direction opposite to said first nut is rotatably mounted relative to said main body member;
- and, a driving apparatus rotates the second spanner member;
- the method comprising the steps of:
- driving said driving apparatus to turn said second spanner member in said opposite direction relative to said main body utilizing a ratchet device, returning said driving apparatus to an original state;
- repeating said driving and said returning operations;
- returning said driving apparatus to an original operating position after the tightening operation has begun;
- and
- further repeating said driving and returning operations of said driving apparatus until said nuts are tightened.
Dependencies are inferred from the claim text.