Anti-rotation clip for screw retention
AssigneeShimano Inc.
InventorDaisuke Nago
Life of this patent
Estimating the term…
Abstract
A screw retention device is disclosed having a clamping part and a hook part. The clamping part engages the head of a screw for securely retaining the screw. The hook part interacts with a surface of the component on which the screw is fastened to limit the rotation of the screw. The screw retention device is configured to be used with any known screw having a protruding head. In a preferred embodiment of the invention, the screw retention device is used with a serrated screw wherein the clamping part of the screw retention device includes a serrated portion which corresponds to and engages with the serrations on the serrated screw to securely grip the screw.
Claims19
A screw retainer assembly, comprising:
- a screw having a screw head;
- and
- a screw retention device snap fit onto the screw head.
A screw retention device for retaining a screw, comprising:
- a clamping part dimensioned to grip the screw;
- and
- a hook part dimensioned to limit the rotation of the screw.
A screw retention device for securely maintaining a screw in a static position, the screw retention device comprising:
- a clamping part extending in a first plane, the clamping part defining a recess having diameter;
- a hook part extending in a second plane and attached to the clamping part;
- and
- wherein the recess of the clamping part is dimensioned to receive the screw.
A method of retaining a screw fastened in a component in a substantially static position, comprising the steps of:
- providing a screw having a head portion and a shaft;
- providing a component having a top surface and a side surface substantially normal to the top surface;
- providing a screw retention device having a clamping part and a hook part attached to the clamping part;
- fastening the screw into the top surface of the component;
- snap fitting the screw retention device on the screw, wherein the clamping part of the screw retention device grips the head of the screw and the hook part of the screw retention device extends along the side surface of the component;
- and
- wherein upon rotation of the screw, the hook part of the screw retention device contacts the side surface of the component, thereby limiting the rotation of the screw.
A screw retainer assembly, comprising:
- a component having a first side and a second side, wherein the first side and the second side are substantially perpendicular;
- a screw having a head portion and a shaft, the shaft fastened in the first side of the component;
- a screw retainer device having a clamping part for removably gripping the head portion of the screw and a hook part extending along the second side of the component;
- and
- wherein upon rotation of the screw, the hook part of the screw retainer device contacts the second side of the component and limits the rotation of the screw.
Dependencies are inferred from the claim text.