US3768335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crankshaft composed of a plurality of sections welded together
Assignee: MAN AG
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Filing: 1971-05-11
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Granted: 1973-10-30
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Expires: 1991-05-11
Abstract
Abstract The specification discloses a crankshaft composed of a plurality of sections which are welded together and a method of making the crankshaft in which each said crankshaft section comprises a web of the crankshaft and at least a part of the journal portions on opposite sides thereof. In making the crankshaft, the sections are placed in end to end relation in the proper angularly oriented positions and are fixedly held relative to each other during the welding operation. The welding can be accomplished by electron beam welding or the welding can be accomplished by interposing disc shaped members between the opposite end of adjacent ones of the sections and then rotating the members and sections relatively while exerting axial pressure thereon to effect the said welding. At least in the case where the disc shaped members are interposed between adjacent ones of the crankshaft sections, an annular chamber is formed in at least one of the interengaging faces of each said member and the sections on opposite sides thereof to provide a space to receive material displaced during the welding operation. Lubricant passageways lead between the journal surfaces and through the webs and also through the disc shaped members when these are employed.
Inventors
- 👤 K Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:37
CPC Classifications
F; F16; F16C; F16C3/00; F16C3/04; F16C3/06; F16C3/10; F16C3/14; Y; Y10; Y10T; Y10T29/00; Y10T29/17; Y10T74/00; Y10T74/21; Y10T74/2173; Y10T74/2174; Y10T74/2175; Y10T74/2185
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
135 words
In a crankshaft comprising axially spaced journal portions and intervening web portions joining the journal portions together; a plurality of individual sections arranged in end to end relation and means including weld means interconnecting said sections at the ends thereof, each said section comprising a said web portion and at least a part of each of the said journal portions on each side thereof, said means including disc shaped members interposed between the opposed ends of adjacent ones of said sections and weld means joining said members to the said sections on opposite sides thereof, each member including at least one radial passage means and central axial passage means extending therethrough and intersecting said radial passage means, each said section adjacent a said member having further passage means therein communicating with said axial passage means.
Claim 2
Dependent Claim
135 words
In a crankshaft comprising axially spaced journal portions and intervening web portions joining the journal portions together; a plurality of individual sections arranged in end to end relation and means including weld means interconnecting said sections at the ends thereof, each said section comprising a said web portion and at least a part of each of the said journal portions on each side thereof, said means including disc shaped members interposed between the opposed ends of adjacent ones of said sections and weld means joining said members to the said sections on opposite sides thereof, each member including at least one radial passage means and central axial passage means extending therethrough and intersecting said radial passage means, each said section adjacent a said member having further passage means therein communicating with said axial passage means.
Claim 3
Dependent Claim
40 words
A crankshaft according to claim 1 which includes lubricant passage means extending from the periphery of each said journal portion through the adjacent said web portions to the said journal portions on the opposite sides of the said web portions.
Claim 4
Dependent Claim
42 words
A crankshaft according to claim 1 which includes annular chamber means surrounding the juncture of said axial passage means and said further passage means and formed in the face of at least one of said members and the said section adjacent thereto.
Claim 5
Dependent Claim
120 words
In a crankshaft comprising axially spaced journal portions and intervening web portions joining the journal portions together; a plurality of individual sections arranged in end to end relation and means including weld means interconnecting said sections at the ends thereof, each said section comprising a said web portion and at least a part of each of the said journal portions on each side thereof, said means including disc shaped members interposed between the opposed ends of adjacent ones of said sections and weld means joining said members to the said sections on opposite sides thereof, said members and the said sections adjacent thereto being provided with cooperating telescoping elements of pin and socket means for aligning said members and sections.
Claim 6
Dependent Claim
120 words
In a crankshaft comprising axially spaced journal portions and intervening web portions joining the journal portions together; a plurality of individual sections arranged in end to end relation and means including weld means interconnecting said sections at the ends thereof, each said section comprising a said web portion and at least a part of each of the said journal portions on each side thereof, said means including disc shaped members interposed between the opposed ends of adjacent ones of said sections and weld means joining said members to the said sections on opposite sides thereof, said members and the said sections adjacent thereto being provided with cooperating telescoping elements of pin and socket means for aligning said members and sections.
Claim 7
Dependent Claim
36 words
A crankshaft according to claim 4 in which adjacent ones of said sections have the ends thereof in abutting relation and directly welded together, said abutting ends comprising cooperating telescoping elements of pin and socket means.
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |