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US 2014/0178125 A1Published application
Stamped clevis
OwnerGary Crewson, Bernard Malkainventors
Life of this patent
Estimating the term…
Abstract
A clevis including a bridge portion, a cylindrically shaped neck formed from the bridge, and folded side walls extending from the bridge portion in a first direction. One side wall includes a first hole and a first surface parallel to a longitudinal axis. The other side wall includes a second hole and a second surface facing the first surface. The clevis includes a threaded opening, in the bridge and neck, aligned with the axis and a space formed by the bridge and side walls. The neck is formed from the bridge portion in the first direction or is formed from the bridge portion in a third direction, opposite the first direction. The material includes one only single piece of low carbon steel. The first and second surfaces are parallel to the longitudinal axis.
Claims22
A clevis for an air brake assembly, comprising:
- a longitudinal axis;
- a bridge portion;
- a cylindrically shaped neck formed from the bridge portion;
- a first folded side wall extending from the bridge portion in a first direction parallel to the longitudinal axis and comprising:
- a first surface facing in a second direction orthogonal to the longitudinal axis;
- and,
- a first hole passing through material forming the clevis and wholly surrounded by the material;
- a second folded side wall extending from the bridge portion in the first direction and comprising:
- a second surface facing the first surface;
- and,
- a second hole passing through the material and wholly surrounded by the material;
- a threaded opening passing through the bridge portion and the neck, wholly surrounded by the material forming the clevis, and aligned with the longitudinal axis;
- and,
- a space formed by the bridge and the first and second side walls, wherein:
- the cylindrically shaped neck is formed from the bridge portion in the first direction or is formed from the bridge portion in a third direction, opposite the first direction;
- the material includes one only single piece of low carbon steel;
- the first and second surfaces are parallel to the longitudinal axis;
- the first and second holes are aligned in the second direction;
- and,
- the longitudinal axis passes through the threaded opening and the space.
17 more elements
A method of stamping a clevis for an air brake assembly, comprising:
- stamping a sheet of steel to form a planar blank comprising:
- a first longitudinal axis passing through first and second longitudinal ends;
- first and second oppositely facing planar surfaces;
- a central portion with a uniform width orthogonal to the first longitudinal axis;
- a first end portion extending from the central portion along the first longitudinal axis in a first direction and tapering toward the first longitudinal end;
- and,
- a second end portion extending from the central portion along the first longitudinal axis in a second direction, opposite the first direction, and tapering toward the second longitudinal end;
- piercing the blank to form:
- a first hole between a center point of the first longitudinal axis and the first longitudinal end and connecting the first and second surfaces;
- and,
- a second hole between the center point of the first longitudinal axis and the second longitudinal end and connecting the first and second surfaces;
- forming the blank to form a ring-shaped neck:
- including a third hole;
- and,
- extending from the central portion and the second planar surface in a third direction parallel to a second longitudinal axis passing through the third hole;
- bending a first portion of the blank, including the first longitudinal end, along a first line orthogonal to the first longitudinal axis, passing through the central portion, and between the first hole and the third hole such that the first portion of the blank is parallel to the second longitudinal axis and extends from the central portion in a fourth direction, opposite the third direction;
- bending a second portion of the blank, including the second longitudinal end, along a second line orthogonal to the first longitudinal axis, passing through the central portion, and between the second hole and the third hole such that the second portion of the blank is parallel to the second longitudinal axis and respective segments of the first surface included in the first and second portions of the blank face each other;
- and,
- threading an inner circumferential surface of the third hole.
16 more elements
A method of stamping a clevis for an air brake assembly, comprising:
- stamping a sheet of steel to form a planar blank comprising:
- a first longitudinal axis passing through first and second longitudinal ends;
- first and second oppositely facing planar surfaces;
- a central portion with a uniform width orthogonal to the first longitudinal axis;
- a first end portion extending from the central portion along the first longitudinal axis in a first direction and tapering toward the first longitudinal end;
- and,
- a second end portion extending from the central portion along the first longitudinal axis in a second direction, opposite the first direction, and tapering toward the second longitudinal end;
- piercing the blank to form:
- a first hole between a center point of the first longitudinal axis and the first longitudinal end and connecting the first and second surfaces;
- and,
- a second hole between the center point of the first longitudinal axis and the second longitudinal end and connecting the first and second surfaces;
- forming the blank to form a ring-shaped neck:
- including a third hole;
- and,
- extending from the central portion and the first planar surface in a third direction parallel to a second longitudinal axis passing through the third hole;
- bending a first portion of the blank, including the first longitudinal end, along a first line orthogonal to the first longitudinal axis, passing through the central portion, and between the first hole and the third hole such that the first portion of the blank is parallel to the second longitudinal axis and extends from the central portion in the third direction;
- bending a second portion of the blank, including the second longitudinal end, along a second line orthogonal to the first longitudinal axis, passing through the central portion, and between the second hole and the third hole such that the second portion of the blank is parallel to the second longitudinal axis and respective segments of the first surface included in the first and second portions of the blank face each other;
- and,
- threading an inner circumferential surface of the third hole.
16 more elements
Dependencies are inferred from the claim text.