Patent US4983797A successfully refreshed from Google Patents.
US4983797A
Expired / Lapsed
US
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Method for manufacturing a composite camshaft
Assignee: Dana Inc
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Filing: 1989-12-29
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Granted: 1991-01-08
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Expires: 2009-12-29
Abstract
Abstract An improved method for manufacturing a camshaft. A robot positions a drive gear on a shaft and the gear is laser welded to the shaft. The cam lobes are axially and rotatively positioned on the shaft utilizing a robot and are laser welded to the shaft. Bearing journal sleeves also may be axially positioned on the shaft by a robot and may be laser welded to the shaft. Preferably, the gear, the cam lobes and any bearing journal sleeves are welded utilizing a robot mounted laser welder to achieve fully automated production.
Inventors
- 👤 David K. McAllister
- 👤 Russell E. Hite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:10
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/08; B23K26/0869; B23K26/0876; B23K26/0884; B23K26/0823; F; F01; F01L; F01L1/00; F01L1/02; F01L1/04; F01L1/047; F16; F16H; F16H53/00; F16H53/02; F16H53/025; F01L2303/00; F01L2303/01; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49293; Y10T29/49462; Y10T29/49465; Y10T74/00; Y10T74/21; Y10T74/2101
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
42 words
A method for manufacturing a camshaft comprising the steps of: (a) utilizing a robot to position a cam lobe at a selected axial and rotative position on a cylindrical shaft; and (b) securing said cam lobe to said shaft by laser welding.
Claim 2
Independent Claim
42 words
A method for manufacturing a camshaft comprising the steps of: (a) utilizing a robot to position a cam lobe at a selected axial and rotative position on a cylindrical shaft; and (b) securing said cam lobe to said shaft by laser welding.
Claim 3
Dependent Claim
53 words
A method for manufacturing a camshaft, as set forth in claim 1, and further including the steps of (c) utilizing said robot to position at least one additional cam lobe at a selected axial and rotative position on said shaft; and (d) securing said additional cam lobe to said shaft by laser welding.
Claim 4
Dependent Claim
26 words
A method for manufacturing a camshaft, as set forth in claim 2, wherein each of said cam lobes is welded to said shaft by laser welding.
Claim 5
Dependent Claim
29 words
A method for manufacturing a camshaft, as set forth in claim 2, wherein said cam lobes are secured to said shaft by welding with a robot mounted laser welder.
Claim 6
Dependent Claim
42 words
A method for manufacturing a camshaft, as set forth in claim 4, and further including the steps of utilizing a robot to position,a gear on said shaft, and securing said gear to said shaft by welding with a robot mounted laser welder.
Claim 7
Dependent Claim
46 words
A method for manufacturing a camshaft, as set forth in claim 5, wherein said gear is positioned on and secured to said shaft prior to positioning and securing a cam lobe on said shaft, and wherein said cam lobes are rotatively positioned relative to said gear.
Claim 8
Dependent Claim
53 words
A method for manufacturing a camshaft, as set forth in claim 6, and further including the steps of utilizing a robot to axially position at least one bearing journal sleeve on said shaft and securing said at least one bearing journal sleeve to said shaft by welding with a robot mounted laser welder.
Claim 9
Dependent Claim
48 words
A method for manufacturing a camshaft, as set forth in claim 1, and further including the steps of utilizing a robot to axially position at least one bearing journal sleeve on said shaft and securing said at least one bearing journal sleeve to said shaft by laser welding.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-07 | 1994-07-09 | 1995-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-07 | 1998-07-09 | 1999-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-07 | 2002-07-09 | 2003-01-08 | $7700.00 | Window Closed / Lapsed |