US4482288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical arm
Assignee: Fiat Auto SpA
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Filing: 1982-09-01
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Granted: 1984-11-13
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Expires: 2002-09-01
Abstract
Abstract The invention relates to a mechanical arm having four degrees of freedom (or possibilities of motion) and actuated by two electric motors, each motor of these alternately controls the movements corresponding to at least two degrees of freedom. The result is an arm having a mixed control for movement in series and in parallel in which the motions controlled by the same motor are carried out in different instants of time, whereas the motions controlled by different motors can be performed simultaneously.
Inventors
- 👤 Alberto Rovetta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:35
CPC Classifications
B; B25; B25J; B25J9/00; B25J9/02; B25J9/04; B25J9/046
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
258 words
A mechanical arm consisting of a telescopable rod (13) comprising a guideway (14) and a slider (15), a sweeping extension (55), a supporting structure (11) and a base (10), the sweeping extension to which a tool assembly to be displaced is secured, being pivoted to the slider (15) of said telescopable rod (13), the guideway (14) of said telescopable rod (13) being pivoted to said supporting structure (11), which latter, in its turn, is rotatably supported (12) by the said base (10), the arm being characterized in that said supporting structure (11) is operatively connected to a first electric motor (23) by a rotary drive transferring mechanism (24, 25, 26, 27) and by a first clutch-brake unit (28, 29), said guideway (14) of the telescopable rod (13) being operatively connected to said first electric motor (23) by a first drive-transferring mechanism adapted to convert rotary motion (17, 18) into a translational motion and by a second clutch-brake unit (31, 32), the slider (15) of said telescopable rod (13) being operatively connected to a second electric motor (39) by a second drive-transferring mechanism (40, 48) adapted to convert rotary motion into a translational motion and being operatively connected to a first brake (43) adapted) to lock in onto the guideway, said sweeping extension (55) being operatively connected to the same second electric motor (39) by the same second drive-transferring mechanism (40, 48) adapted to convert the rotary motion into a translational motion and being operatively connected to a second brake (56) adapted to lock it on said slider (15).
Claim 2
Dependent Claim
258 words
A mechanical arm consisting of a telescopable rod (13) comprising a guideway (14) and a slider (15), a sweeping extension (55), a supporting structure (11) and a base (10), the sweeping extension to which a tool assembly to be displaced is secured, being pivoted to the slider (15) of said telescopable rod (13), the guideway (14) of said telescopable rod (13) being pivoted to said supporting structure (11), which latter, in its turn, is rotatably supported (12) by the said base (10), the arm being characterized in that said supporting structure (11) is operatively connected to a first electric motor (23) by a rotary drive transferring mechanism (24, 25, 26, 27) and by a first clutch-brake unit (28, 29), said guideway (14) of the telescopable rod (13) being operatively connected to said first electric motor (23) by a first drive-transferring mechanism adapted to convert rotary motion (17, 18) into a translational motion and by a second clutch-brake unit (31, 32), the slider (15) of said telescopable rod (13) being operatively connected to a second electric motor (39) by a second drive-transferring mechanism (40, 48) adapted to convert rotary motion into a translational motion and being operatively connected to a first brake (43) adapted) to lock in onto the guideway, said sweeping extension (55) being operatively connected to the same second electric motor (39) by the same second drive-transferring mechanism (40, 48) adapted to convert the rotary motion into a translational motion and being operatively connected to a second brake (56) adapted to lock it on said slider (15).
Claim 3
Dependent Claim
26 words
A mechanical arm according to claim 1, characterized in that said first drive-transfer mechanism comprises a screw-threaded arbor (17) engaging a nut (19) through a ball-clutch.
Claim 4
Dependent Claim
26 words
A mechanical arm according to claim 1, characterized in that said second drive-transfer mechanism comprises a screw-threaded arbor (40) engaging a nut (48) through a ball-clutch.
References Cited (Backward Citations)
US3543910A
Cited
DE2452345A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |