US Patent: 5,011,324
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| Detent Structure Having a Retaining Lip with a Smooth Continuous Outer Surface Free from Stress-Concentrating Corners
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Patentee:
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| Gordon A. Putney (exact or similar names) - Lake Geneva, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 14, 1990 |
| Granted: |
Apr. 30, 1991 |
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Stan Schulz
Snap-On Tools Company History
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Description: |
| Emrich & Dithmar - patent attorneys
Abstract
A detent ball is retained in a recess against a bias spring by deforming the material around the open end of the recess radially and axially inwardly of the recess to define a retaining lip to hold the ball in place, the lip having a substantially part-spherical outer surface. The deformation is accomplished by an embossing tool having a part-spherical embossing surface which converges from an end wider than the recess to an end narrower than the recess. A part-spherical cavity in the end of the embossing tool accommodates the ball during the deformation process.
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