US3870094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain link for antiskid and tire protective chains
Assignee: Erlau AG
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Filing: 1973-07-23
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Granted: 1975-03-11
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Expires: 1993-07-23
Abstract
Abstract A chain link for anti-skid and tire protective chains made of highly alloyed cast steel, in which the steel with a carbon content of in excess of 1% has a manganese content in excess of 5%, preferably a manganese content of from 12% to 18% and/or nickle and molybdenum additions of from 0.2% to 2.4%.
Inventors
- 👤 Werner Schurle
- 👤 Anton Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:36
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/04; B; B60; B60C; B60C27/00; B60C27/06; B60C27/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
158 words
A one-piece, integral, cast tire chain tread link of substantially rectangular shape with rounded corners, said link having a marginal tire-engaging section along one of the longer sides, and a ground-engaging section along the other of the longer sides, the intermediate section having short sides on the ends and a central web joining the two longer sides, so as to form two chain-engaging openings separated by said central web, said ground-engaging section being substantially wider transversely of the link and having a substantially greater cross-sectional area than said tire-engaging section with two, longitudinal ground-engaging surfaces intersecting at an obtuse angle, said short sides having an elliptical cross section said cast link is formed of cast steel material having a carbon content of 1% to 1.4%, a manganese content of 5% to 18%, a nickel content of approximately 1.8%, to 2.4%, and after production in casting procedure, the link is subjected to a heat treatment of 450*C to 1,050*C.
Claim 2
Dependent Claim
158 words
A one-piece, integral, cast tire chain tread link of substantially rectangular shape with rounded corners, said link having a marginal tire-engaging section along one of the longer sides, and a ground-engaging section along the other of the longer sides, the intermediate section having short sides on the ends and a central web joining the two longer sides, so as to form two chain-engaging openings separated by said central web, said ground-engaging section being substantially wider transversely of the link and having a substantially greater cross-sectional area than said tire-engaging section with two, longitudinal ground-engaging surfaces intersecting at an obtuse angle, said short sides having an elliptical cross section said cast link is formed of cast steel material having a carbon content of 1% to 1.4%, a manganese content of 5% to 18%, a nickel content of approximately 1.8%, to 2.4%, and after production in casting procedure, the link is subjected to a heat treatment of 450*C to 1,050*C.
Claim 3
Dependent Claim
158 words
nA one-piece, integral, cast tire chain tread link of substantially rectangular shape with rounded corners, said link having a marginal tire-engaging section along one of the longer sides, and a ground-engaging section along the other of the longer sides, the intermediate section having short sides on the ends and a central web joining the two longer sides, so as to form two chain-engaging openings separated by said central web, said ground-engaging section being substantially wider transversely of the link and having a substantially greater cross-sectional area than said tire-engaging section with two, longitudinal ground-engaging surfaces intersecting at an obtuse angle, said short sides having an elliptical cross section said cast link is formed of cast steel material having a carbon content of 1% to 1.4%, a manganese content of 5% to 18%, a nickel content of approximately 1.8%, to 2.4%, and after production in casting procedure, the link is subjected to a heat treatment of 450*C to 1,050*C.
Claim 4
Dependent Claim
158 words
nA one-piece, integral, cast tire chain tread link of substantially rectangular shape with rounded corners, said link having a marginal tire-engaging section along one of the longer sides, and a ground-engaging section along the other of the longer sides, the intermediate section having short sides on the ends and a central web joining the two longer sides, so as to form two chain-engaging openings separated by said central web, said ground-engaging section being substantially wider transversely of the link and having a substantially greater cross-sectional area than said tire-engaging section with two, longitudinal ground-engaging surfaces intersecting at an obtuse angle, said short sides having an elliptical cross section said cast link is formed of cast steel material having a carbon content of 1% to 1.4%, a manganese content of 5% to 18%, a nickel content of approximately 1.8%, to 2.4%, and after production in casting procedure, the link is subjected to a heat treatment of 450*C to 1,050*C.
Claim 5
Dependent Claim
15 words
A chain link according to claim 1, in which nickel content amounts to approximately 2%.
Claim 6
Dependent Claim
17 words
A chain link according to claim 2, in which manganese content amounts to approximately 12% to 18%.
Claim 7
Dependent Claim
15 words
A chain link according to claim 2, in which manganese content amounts to approximately 15%.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |