Patent US4540212A successfully refreshed from Google Patents.
US4540212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Industrial robot hand
Assignee: Fanuc Corp
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Filing: 1982-08-25
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Granted: 1985-09-10
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Expires: 2002-08-25
Abstract
Abstract An industrial robot hand having swing fingers (18a and 18b) for gripping a work pivotally mounted on a hand base member (10) which is attached to the free end of a wrist unit, said swing fingers being members formed of a sheet metal through a pressing process in a U-shaped cross-section, and said swing fingers having a U-shaped cross-section and a hydraulic actuator (24) linked together with chain pin links (32a and 32b).
Inventors
- 👤 Hajimu Inaba
- 👤 Ryo Nihei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:24
CPC Classifications
B; B25; B25J; B25J15/00; B25J15/02; B25J15/0206; Y; Y10; Y10S; Y10S294/00; Y10S294/907
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
152 words
An industrial robot hand having swing fingers for gripping a work and adapted to be joined to the free end of a wrist unit comprising: a pair of opposed rigid unitary swing fingers pivotally mounted to a swing finger actuator mounted on a hand base member attached to said wrist unit, the swing finger actuator including a hydraulic cylinder having a piston rod fastened to said hand base member and adapted to cause swing fingers to operate by the sliding movement of the cylinder tube, said swing fingers having a U-shaped cross section and being formed from sheet metal by a pressing process, a position detecting means for detecting a terminal position of the sliding movement of said actuator cylinder tube including a signal whereby the fully closed position of said swing fingers is indicated by a signal; and the pivotal connections of said swing fingers being made by chain pin links.
Claim 2
Dependent Claim
152 words
An industrial robot hand having swing fingers for gripping a work and adapted to be joined to the free end of a wrist unit comprising: a pair of opposed rigid unitary swing fingers pivotally mounted to a swing finger actuator mounted on a hand base member attached to said wrist unit, the swing finger actuator including a hydraulic cylinder having a piston rod fastened to said hand base member and adapted to cause swing fingers to operate by the sliding movement of the cylinder tube, said swing fingers having a U-shaped cross section and being formed from sheet metal by a pressing process, a position detecting means for detecting a terminal position of the sliding movement of said actuator cylinder tube including a signal whereby the fully closed position of said swing fingers is indicated by a signal; and the pivotal connections of said swing fingers being made by chain pin links.
Claim 3
Dependent Claim
33 words
An industrial robot hand according to claim 1, wherein a pair of said swing fingers are pivotally mounted on each side of said hand base member so that a double-hand system is formed.
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) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |