US5827588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Workpiece having a laser heat-treated surface formed by a small diameter bore extending in workpiece
Assignee: Ingersoll Rand Co
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Filing: 1996-11-18
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Granted: 1998-10-27
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Expires: 2016-11-18
Abstract
Abstract A workpiece has a surface formed by a circular bore extending in the workpiece body along a bore axis. The bore surface includes a heat-affected zone pattern thereon, produced with a laser light beam. The heat-affected zone pattern can be a variety of patterns including a single helix, overlapping helixes a single annular ring and a plurality of annular rings. The heat-affected zones can have a variety of widths, as measured in relation to the longitudinal bore axis.
Inventors
- 👤 Craig L. Snyder
- 👤 William J. Gavigan
- 👤 Frank J. Tufano
- 👤 James T. Shandersky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:15
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/08; C21D9/14; B; B23; B23K; B23K26/00; B23K26/02; B23K26/06; B23K26/064; B23K26/0648; B23K26/0665; B23K26/08; B23K26/0823; B23K26/12; B23K26/123; C21D1/00; C21D1/06; C21D1/09; C21D2221/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139; Y10T428/1393
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
151 words
A laser heat-treated workpiece comprising; a. a body having a circular bore extending through said body along a longitudinal bore axis, said bore having a surface, said surface being heat-treated; b. a heat-affected zone pattern on said bore surface said heat-affected zone pattern produced by a laser light beam; c. said heat-affected zone pattern forming a first helix advancing longitudinally in a first direction along said bore surface, said first helix having a plurality of turns, each turn separated from adjacent turns; and d. at least one additional heat-affected zone pattern forming at least one additional helix advancing longitudinally in a second direction along said workpiece bore surface, said second direction being opposite to said first direction, said at least one additional helix having a plurality of turns, each turn separated from adjacent turns, said at least one additional helix turns overlapping in cross-wise pattern said turns of said first helix.
Claim 2
Dependent Claim
151 words
A laser heat-treated workpiece comprising; a. a body having a circular bore extending through said body along a longitudinal bore axis, said bore having a surface, said surface being heat-treated; b. a heat-affected zone pattern on said bore surface said heat-affected zone pattern produced by a laser light beam; c. said heat-affected zone pattern forming a first helix advancing longitudinally in a first direction along said bore surface, said first helix having a plurality of turns, each turn separated from adjacent turns; and d. at least one additional heat-affected zone pattern forming at least one additional helix advancing longitudinally in a second direction along said workpiece bore surface, said second direction being opposite to said first direction, said at least one additional helix having a plurality of turns, each turn separated from adjacent turns, said at least one additional helix turns overlapping in cross-wise pattern said turns of said first helix.
Claim 3
Dependent Claim
89 words
A laser heat-treated workpiece comprising: a. a body having a circular bore extending through said body along a longitudinal bore axis, said bore having a surface, said surface being heat-treated; b. a heat-affected zone pattern on said bore surface said heat-affected zone pattern produced by a laser light beam; and c. said heat-affected zone pattern forming a plurality of helixes advancing longitudinally along said bore surface, each said helix having a plurality of turns, each said turn separated from adjacent turns, said plurality of helixes overlapping in cross-wise pattern.
Claim 4
Dependent Claim
89 words
A laser heat-treated workpiece comprising: a. a body having a circular bore extending through said body along a longitudinal bore axis, said bore having a surface, said surface being heat-treated; b. a heat-affected zone pattern on said bore surface said heat-affected zone pattern produced by a laser light beam; and c. said heat-affected zone pattern forming a plurality of helixes advancing longitudinally along said bore surface, each said helix having a plurality of turns, each said turn separated from adjacent turns, said plurality of helixes overlapping in cross-wise pattern.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-10-26 | 2002-04-27 | 2002-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-26 | 2006-04-27 | 2006-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-26 | 2010-04-27 | 2010-10-27 | $7700.00 | Window Closed / Lapsed |