Patent US3834763A successfully refreshed from Google Patents.
US3834763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Divided tool cutter head have torque yielding coupling
Assignee: Voestalpine AG
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Filing: 1973-06-28
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Granted: 1974-09-10
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Expires: 1993-06-28
Abstract
Abstract A cutting tool shaft is mounted in the free end portion of a jib arm and has a shaft end portion protruding from the free end portion of the jib arm. A cutting tool is carried by said shaft end portion. Torque-limiting clutch means connect said cutting tool to said shaft.
Inventors
- 👤 S Sigott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:11
CPC Classifications
E; E21; E21D; E21D9/00; E21D9/10; E21D9/1006; E21D9/104; E21C; E21C35/00; E21C35/04; E21C35/043
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
61 words
A divided tool cutting machine, which comprises a jib arm having a free end portion, a cutting tool shaft mounted in said free end portion and having a shaft end portion protruding from said free end portion of said jib arm, a cutting tool carried by said shaft end portion, and torque-limiting clutch means connecting said cutting tool to said shaft.
Claim 2
Dependent Claim
61 words
A divided tool cutting machine, which comprises a jib arm having a free end portion, a cutting tool shaft mounted in said free end portion and having a shaft end portion protruding from said free end portion of said jib arm, a cutting tool carried by said shaft end portion, and torque-limiting clutch means connecting said cutting tool to said shaft.
Claim 3
Dependent Claim
54 words
A divided tool cutting machine as set forth in claim 1, in which said cutting tool shaft has two shaft end portions protruding from said free end portions of said jib arm, each of said shaft end portions carries a cutting tool, and said torque-limiting clutch means connect said cutting tools to said shaft.
Claim 4
Dependent Claim
49 words
A divided tool cutting machine as set forth in claim 2, in which said cutting tool shaft extends transversely to the longitudinal direction of said jib arm and said torque-limiting clutch means comprise two torque limiting clutches, each of which connects one of said cutting tools to said shaft.
Claim 5
Dependent Claim
46 words
A divided tool cutting machine as set forth in claim 1, in which said torque-limiting clutch means are arranged to transmit torques up to a predetermined upper limit from said shaft to said cutting tool and to slip in response to torques exceeding said upper limit.
Claim 6
Dependent Claim
22 words
A divided tool cutting machine as set forth in claim 1, in which said torque-limiting clutch means comprise radially preloaded friction elements.
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |