Pre-curved spring bolster plate
AssigneeHewlett-Packard Development Company, L.P.
InventorsJames David Hensley, Stephen Daniel Cromwell
Life of this patent
Estimating the term…
Abstract
A method and apparatus to mount a pre-curved bolster plate to a substrate. One embodiment of the invention involves a method to assemble a pre-curved bolster plate on a substrate. A second embodiment of the invention involves a method to fabricate a pre-curved bolster plate. A third embodiment of the invention involves an assembled substrate with a pre-curved bolster plate on the opposite side of the assembled substrate, under an electrical contact area of a component on the assembled substrate.
Claims18
A method to fabricate a pre-curved bolster plate, comprising:
- selecting a set of physical dimensions of said pre-curved bolster plate;
- estimating an initial radius of curvature for said pre-curved bolster plate;
- creating a model of said pre-curved bolster plate after assembly on a substrate;
- estimating a more precise radius of curvature for said pre-curved bolster plate after creating said model of said pre-curved bolster plate after assembly on said substrate;
- cutting said pre-curved bolster plate according to said set of physical dimensions;
- and
- stamping said pre-curved bolster plate to achieve said more precise radius of curvature.
A method for fabricating a bolster plate comprising:
- providing a bolster plate;
- creating a model of the bolster plate having a curved surface with an assumed radius of curvature for the curved surface;
- determining that the model of the bolster plate will deflect to a flat plate after assembly of the modeled bolster plate to a substrate;
- and
- fabricating a bolster plate having a curved surface with the assumed radius of curvature of the modeled bolster plate.
A method for fabricating a bolster plate comprising:
- (a) providing a bolster plate;
- (b) creating a first model of the bolster plate having a first curved surface with a first assumed radius of curvature for the first curved surface;
- (c) determining that the first model of the bolster plate will not deflect to a flat plate after assembly of the modeled bolster plate to a substrate;
- (d) creating a second model of the bolster plate with a second curved surface having a second assumed radius of curvature for the second curved surface;
- (e) determining that the second model of the bolster plate will deflect to a flat plate after assembly of the second modeled bolster plate to a substrate;
- and
- (f) fabricating a bolster plate having the second curved surface with second assumed radius of curvature of the second modeled bolster plate.
A method for fabricating a bolster plate comprising the following steps:
- (a) providing a bolster plate;
- (b) creating a model of the bolster plate having a curved surface with an assumed radius of curvature for the curved surface;
- (c) determining that the bolster plate model of step (b) will not deflect to a flat plate after assembly of the bolster plate model to a substrate;
- (d) repeating step (b) for at least one additional model of the bolster plate, with each additional model having a different curved surface and different assumed radius of curvature, until it is determined that a modeled bolster plate will deflect to a flat plate when assembled to a substrate;
- and
- (f) fabricating a bolster plate having a curved surface with a radius of curvature of the modeled bolster plate of step (d).
Dependencies are inferred from the claim text.