Patent US4091904A successfully refreshed from Google Patents.
US4091904A
Expired / Lapsed
US
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Synchronizing device
Assignee: Hurth Getriebe und Zahnraeder GmbH
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Filing: 1976-08-02
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Granted: 1978-05-30
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Expires: 1996-08-02
Abstract
Abstract A synchronizing device for gear shift mechanisms. The synchronizing device has one of the friction cone ring members coated with a wear-resistant molybdenum sprayed thereon. The other friction cone member has a manganese-alloyed carbon steel sprayed thereon. The manganese-alloyed carbon steel consists of a steel with 0.7 to 0.9 percent carbon and 0.6 to 0.8 percent manganese. The preferred composition is 0.8 percent carbon and 0.7 percent manganese.
Inventors
- 👤 Otto Beyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:51
CPC Classifications
F; F16; F16D; F16D23/00; F16D23/02; F16D23/04; F16D23/06; F16D23/0606
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
In a synchronizing device for a gear shift mechanism having at least one synchronizing friction cone coupling consisting of a cone ring having an external cone surface and a synchronous ring having a matching inner cone surface, at least one of said inner cone surface and said outer cone surface having a sprayed-on wear-resistant and frictionally favorable molybdenum layer thereon, the improvement comprising wherein a layer of manganese-alloyed carbon steel is sprayed onto the other of said inner cone surface and said outer cone surface, said other cone surface being unhardened.
Claim 2
Dependent Claim
91 words
In a synchronizing device for a gear shift mechanism having at least one synchronizing friction cone coupling consisting of a cone ring having an external cone surface and a synchronous ring having a matching inner cone surface, at least one of said inner cone surface and said outer cone surface having a sprayed-on wear-resistant and frictionally favorable molybdenum layer thereon, the improvement comprising wherein a layer of manganese-alloyed carbon steel is sprayed onto the other of said inner cone surface and said outer cone surface, said other cone surface being unhardened.
Claim 3
Dependent Claim
29 words
The improved synchronizing device according to claim 1, wherein said manganese-alloyed carbon steel layer consists of steel with 0.7 to 0.9 percent carbon and 0.6 to 0.8 percent manganese.
Claim 4
Dependent Claim
22 words
The improved synchronizing device according to claim 2, wherein said layer having said manganese-alloyed carbon steel thereon is said inner cone surface.
Claim 5
Dependent Claim
22 words
The improved synchronizing device according to claim 2, wherein said layer having said manganese-alloyed carbon steel thereon is said outer cone surface.
Claim 6
Dependent Claim
24 words
The improved synchronizing device according to claim 1, wherein said manganese-alloyed carbon steel consists of steel with 0.8 percent carbon and 0.7 percent manganese.
Claim 7
Dependent Claim
61 words
The improved synchronizing device according to claim 1, wherein said other cone surface has a thin layer of molybdenum thereon on top of which is a thin layer of 0.7 to 0.9 percent carbon and 0.6 to 0.8 percent manganese, said molybdenum functioning as a bonding agent between said other cone surface and said thin layer of combined carbon and manganese.
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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) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |