Patent US4666361A successfully refreshed from Google Patents.
US4666361A
Expired / Lapsed
US
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Arm driving apparatus
Assignee: Hitachi Ltd
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Filing: 1985-03-06
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Granted: 1987-05-19
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Expires: 2005-03-06
Abstract
Abstract An arm driving apparatus for an articulated robot, which is equipped with a worm wheel adapted to move the arm, a worm gear for driving the worm wheel, and a drive motor for driving the worm gear.
Inventors
- 👤 Shoichi Kitabatake
- 👤 Yuhiko Yabe
- 👤 Kazuhiko Ami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:34
CPC Classifications
B; B25; B25J; B25J9/00; B25J9/10; B25J9/102; B25J13/00; B25J13/08; B25J13/085; B25J19/00; B25J19/06; B25J19/063; B25J9/104
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
78 words
An arm driving apparatus comprising: a drive motor; a worm gear adapted to be rotated by an output of said drive motor; a worm wheel engaging with said worm gear; transmission means for transmitting a turning force of said worm wheel; an arm adapted to be moved up and down by said transmission means; and a pair of pressure sensors disposed at respective ends of a shaft of said worm gear for detecting a thrust of said shaft.
Claim 2
Dependent Claim
78 words
An arm driving apparatus comprising: a drive motor; a worm gear adapted to be rotated by an output of said drive motor; a worm wheel engaging with said worm gear; transmission means for transmitting a turning force of said worm wheel; an arm adapted to be moved up and down by said transmission means; and a pair of pressure sensors disposed at respective ends of a shaft of said worm gear for detecting a thrust of said shaft.
Claim 3
Dependent Claim
30 words
An arm driving apparatus according to claim 1, wherein said transmission means includes a pulley carried on said arm; and a wire extending between said pulley and said worm wheel.
References Cited (Backward Citations)
US4398720A
Cited
US4547121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |