Patent US4887804A successfully refreshed from Google Patents.
US4887804A
Expired / Lapsed
US
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Stage mechanism
Assignee: Canon Inc
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Filing: 1987-11-25
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Granted: 1989-12-19
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Expires: 2007-11-25
Abstract
Abstract A stage mechanism usable in a semiconductor device manufacturing apparatus, for carrying and positioning a semiconductor wafer with high accuracy and at high speed, is disclosed. The stage device includes a reference portion and a stage portion resiliently supported by the reference portion. Further, a solid damper such as a rubber member is disposed between the reference portion and the stage portion, so as to provide a resistance to the displacement of the stage portion. Thus, with the disclosed device, any residual vibration of the stage portion after the displacement of the stage can be damped quickly, with a simple and compact structure.
Inventors
- 👤 Masaru Ohtsuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:17
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/0032; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/34; H; H10; H10P; H10P72/00; H10P72/50
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
66 words
A stage mechanism, comprising: a reference portion; a stage portion displaceably supported by said reference portion; a drive source for displacing in a predetermined direction said stage portion relative to said reference portion; and a vibration attenuating member provided between said reference portion and said stage portion for attenuating vibration caused when said stage portion is displaced by said drive source relative to said reference portion.
Claim 2
Dependent Claim
66 words
A stage mechanism, comprising: a reference portion; a stage portion displaceably supported by said reference portion; a drive source for displacing in a predetermined direction said stage portion relative to said reference portion; and a vibration attenuating member provided between said reference portion and said stage portion for attenuating vibration caused when said stage portion is displaced by said drive source relative to said reference portion.
Claim 3
Dependent Claim
27 words
A mechanism according to claim 1, wherein said vibration attenuating member is disposed between said reference portion and the stage portion with respect to said predetermined direction.
Claim 4
Dependent Claim
54 words
A mechanism according to claim 2, wherein said drive source includes a piezoelectric element operable to press said stage portion in the predetermined direction, said piezoelectric element being disposed at a side of said stage portion which is opposite to a side of said stage portion at which said vibration attenuating member is disposed.
Claim 5
Dependent Claim
40 words
A mechanism according to claim 1, wherein a pair of vibration attenuating members are provided at positions which are substantially symmetrical with respect to a rectilinear line parallel to the predetermined direction and passing through the center of said stage.
Claim 6
Dependent Claim
23 words
A mechanism according to claim 1, wherein said vibration attenuating member is supported by said reference portion for movement in the predetermined direction.
Claim 7
Dependent Claim
23 words
A mechanism according to claim 1, wherein said vibration attenuating member is formed between said reference portion and said stage portion by filling.
Claim 8
Dependent Claim
22 words
A mechanism according to claim 1, wherein said stage portion is supported by said reference portion by a parallel leaf spring mechanism.
Claim 9
Dependent Claim
16 words
A mechanism according to claim 1, wherein said vibration attenuating member comprises an attenuating rubber member.
Claim 10
Dependent Claim
29 words
A mechanism according to claim 1, wherein said vibration attenuating member is made from a material selected from the group of a low-elasticity resin and a low-elasticity bonding agent.
Claim 11
Dependent Claim
17 words
A mechanism according to claim 8, wherein said attenuating rubber member is made of fluorine series rubber.
Claim 12
Dependent Claim
101 words
A stage mechanism comprising: a single base plate member; a reference portion; a stage portion; a flexible coupling member for coupling said reference portion and said stage portion for relative displacement therebetween, wherein said reference portions, said stage portion and said coupling member are provided by forming a groove in said single base plate member; a drive source fixed to said reference portion, for displacing in a predetermined direction said stage portion relative to said reference portion; and a vibration attenuating member provided in the groove, for attenuating vibration caused when said stage portion is relatively displaced by said drive source.
Claim 13
Dependent Claim
101 words
A stage mechanism comprising: a single base plate member; a reference portion; a stage portion; a flexible coupling member for coupling said reference portion and said stage portion for relative displacement therebetween, wherein said reference portions, said stage portion and said coupling member are provided by forming a groove in said single base plate member; a drive source fixed to said reference portion, for displacing in a predetermined direction said stage portion relative to said reference portion; and a vibration attenuating member provided in the groove, for attenuating vibration caused when said stage portion is relatively displaced by said drive source.
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) | 1992-12-18 | 1993-06-19 | 1993-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-18 | 1997-06-19 | 1997-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-18 | 2001-06-19 | 2001-12-19 | $7700.00 | Window Closed / Lapsed |