US4586335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Actuator
Assignee: Hitachi Ltd
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Filing: 1984-10-12
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Granted: 1986-05-06
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Expires: 2004-10-12
Abstract
Abstract An actuator including a plurality of shape memory materials used as a drive source. The plurality of the shape memory materials being arranged in parallel between a stationary member and a movable member so as to enable the actuator to operate at high speed.
Inventors
- 👤 Yuji Hosoda
- 👤 Yoshio Kojima
- 👤 Masakatsu Fujie
- 👤 Kazuo Honma
- 👤 Taro Iwamoto
- 👤 Yoshiyuki Nakano
- 👤 Kohji Kamejima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:34
CPC Classifications
B; B25; B25J; B25J18/00; B25J18/02; B25J18/025; B25J9/00; B25J9/10; B25J9/1085
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
80 words
An actuator comprising a drive source formed of a plurality of shape memory materials, a stationary member, a movable member forming an actuating portion of the actuator, mounted so as to be displacable relative to said stationary member, a resilient means arranged between said movable member and said stationary member for deforming a memorized shape of said shape memory materials, and wherein a plurality of shape memory materials are arranged in parallel between said movable member and said stationary member.
Claim 2
Dependent Claim
80 words
An actuator comprising a drive source formed of a plurality of shape memory materials, a stationary member, a movable member forming an actuating portion of the actuator, mounted so as to be displacable relative to said stationary member, a resilient means arranged between said movable member and said stationary member for deforming a memorized shape of said shape memory materials, and wherein a plurality of shape memory materials are arranged in parallel between said movable member and said stationary member.
Claim 3
Dependent Claim
32 words
The actuator according to claim 1, wherein said shape memory materials are arranged within said resilient material, which is in a shape of a core, and extends in the longitudinal direction thereof.
Claim 4
Dependent Claim
15 words
The actuator according to claim 1, wherein said shape memory materials have a linear shape.
Claim 5
Dependent Claim
15 words
The actuator according to claim 1, wherein said shape memory materials have a coil shape.
Claim 6
Dependent Claim
28 words
The actuator according to claim 1, wherein said shape memory materials are arranged around an outer periphery of said resilient member and extend in a longitudinal direction thereof.
Claim 7
Dependent Claim
15 words
The actuator according to claim 5, wherein said shape memory materials have a linear shape.
Claim 8
Dependent Claim
15 words
The actuator according to claim 5, wherein said shape memory materials have a coil shape.
Claim 9
Dependent Claim
31 words
The actuator according to claim 1, wherein said shape memory materials are arranged within said resilient material and extend in the longitudinal direction thereof, and wherein the resilient means are coil-shaped.
Claim 10
Dependent Claim
19 words
The actuator according to claim 8, wherein a plurality of shape memory materials are arranged within said resilient materials.
Claim 11
Dependent Claim
76 words
The actuator according to claim 5, wherein said stationary member is provided with a holding member extending substantially as far as said movable member, pulleys are mounted on an inner side of said stationary member, one end of each of said shape memory materials is connected to said movable member, and the other end of said shape memory materials is connected to an extended end of said holding member after passing over one of said pulleys.
Claim 12
Dependent Claim
15 words
The actuator according to claim 10, wherein said shape memory materials have a linear shape.
Claim 13
Dependent Claim
92 words
An actuator comprising a drive source formed of a plurality of shape memory materials, a stationary member, a movable member mounted so as to be displacable relative to said stationary member, a resilient means arranged between said movable member and said stationary member for imparting a deformation to the shape memory materials, the plurality of shape memory materials are arranged in parallel between said movable member and said stationary member and wherein said shape memory materials are arranged around an outer periphery said resilient member and extend in a longitudinal direction thereof.
Claim 14
Dependent Claim
92 words
An actuator comprising a drive source formed of a plurality of shape memory materials, a stationary member, a movable member mounted so as to be displacable relative to said stationary member, a resilient means arranged between said movable member and said stationary member for imparting a deformation to the shape memory materials, the plurality of shape memory materials are arranged in parallel between said movable member and said stationary member and wherein said shape memory materials are arranged around an outer periphery said resilient member and extend in a longitudinal direction thereof.
Claim 15
Dependent Claim
78 words
The actuator according to claim 12, wherein said stationary member is provided with a holding member extending substantially as far as said movable member, pulleys are mounted on an inner side of said stationary member, one end of each of said shape memory materials is connected to said movable member, and the other end of each of said shape memory materials is connected to an extended end of said holding member after passing over one of said pulleys.
Claim 16
Dependent Claim
15 words
The actuator according to claim 13, wherein said shape memory materials have a linear shape.
Claim 17
Dependent Claim
15 words
The actuator according to claim 12, wherein said shape memory materials have a linear shape.
Claim 18
Dependent Claim
15 words
The actuator according to claim 12, wherein said shape memory materials have a coil shape.
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) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |