Utility knife
First Claim
Patent Images
1. A utility knife comprising:
- a first housing portion slidably movable relative to a second housing portion between a first position and a second position;
one of the a first housing portion and the second housing portion carrying a strike plate such that the strike plate is spaced from a wall of the one of the first housing portion and the second housing portion;
another one of the first housing portion and the second housing portion carrying a sliding nut assembly comprising a rotatable screw and said sliding nut constrained for movement along the axis of the screw, said sliding nut being positioned between the strike plate and the wall of the one of the first housing portion and the second housing portion when the first housing portion and the second housing portion are in the first position, and the sliding nut moving away from the strike plate when the first housing portion and the second housing portion are in the second position;
the sliding nut, when the first housing portion and the second housing portion are in the first position, engaging the strike plate upon rotation of the screw to draw the first housing portion toward the second housing portion.
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Accused Products
Abstract
A utility knife includes a first housing portion carrying one of a strike plate and a sliding nut assembly and a second housing portion carrying the other one of the strike plate and the sliding nut assembly. The sliding nut assembly includes a rotatable screw and a sliding nut. The sliding nut is movable between a first position where the sliding nut is positioned behind the strike plate and a second position where the sliding nut is positioned spaced from the strike plate. When the sliding nut is in the first position, the sliding nut engages the strike plate upon rotation of the screw to draw the first housing portion toward the second housing portion.
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Citations
19 Claims
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1. A utility knife comprising:
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a first housing portion slidably movable relative to a second housing portion between a first position and a second position; one of the a first housing portion and the second housing portion carrying a strike plate such that the strike plate is spaced from a wall of the one of the first housing portion and the second housing portion; another one of the first housing portion and the second housing portion carrying a sliding nut assembly comprising a rotatable screw and said sliding nut constrained for movement along the axis of the screw, said sliding nut being positioned between the strike plate and the wall of the one of the first housing portion and the second housing portion when the first housing portion and the second housing portion are in the first position, and the sliding nut moving away from the strike plate when the first housing portion and the second housing portion are in the second position;
the sliding nut, when the first housing portion and the second housing portion are in the first position, engaging the strike plate upon rotation of the screw to draw the first housing portion toward the second housing portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19)
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17. A utility knife comprising:
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a first housing portion having a first front edge and a second housing portion having a second front edge, the first housing portion slidably movable relative to the second housing portion between a closed position and a second position; one of the first housing portion and the second housing portion carrying a strike plate such that the strike plate is spaced from a wall of the one of the first housing portion and the second housing portion; another one of the first housing portion and the second housing portion carrying a sliding nut assembly comprising a rotatable screw and said sliding nut constrained for movement along the axis of the screw, said sliding nut positioned between the strike plate and the wall of the one of the first housing portion and the second housing portion;
the sliding nut engaging the strike plate upon rotation of the screw to draw the first housing portion toward the second housing portion;the first front edge comprising a first engagement element and the second front edge comprising a second engagement element where the first engagement element engages the second engagement element when the first housing portion is slid into engagement with the second housing portion in the closed position to prevent the first front edge from being separated from the second front edge; when the first housing portion and the second housing portion are in the closed position the sliding nut is positioned behind the strike plate such that rotation of the screw pulls the sliding nut toward the strike plate until the sliding nut is in tight engagement with the strike plate.
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Specification