US4682135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic support members for an electric actuator
Assignee: Japan Aircraft Development Corp
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Filing: 1986-04-01
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Granted: 1987-07-21
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Expires: 2006-04-01
Abstract
Abstract An electric actuator comprising a housing, a permanent magnet disposed within the housing, an axially movable armature disposed within the permanent magnet, an actuating coil supported by the housing for driving the armature to axially move, and an axially movable actuating rod fixedly connected to the armature, wherein the electric actuator further comprises a pair of elastic support members having radially inner end portions fixedly connected to the actuating rod and radially outer end portions fixedly connected to the housing, respectively.
Inventors
- 👤 Tsuyoshi Yamakawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:19
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/08; F16K31/082; H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1638
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
An electric actuator comprising a housing, a permanent magnet disposed within said housing, an axially movable armature disposed within said housing, an actuating coil supported by said housing for driving said armature to axially move, and an axially moveable actuating rod fixedly connected to said armature, wherein said electric actuator further comprises a pair of elastic support members having radially inner end portions fixedly connected to said actuating rod at opposite portions thereof adjacent said armature and radially outer end portions fixedly connected to said housing, respectively, each of said elastic support members consisting of a plurality of thin leaves laminated one upon the other, each of said elastic support members being formed with a plurality of arm portions equiangularly spaced apart with respect to one another and radially extending between said radially inner and outer end portions and a plurality of generally triangular openings each disposed between two adjacent arm portions, each of said arm portions being axially deflected with respect to said radially inner and outer end portions of said elastic support member.
Claim 2
Dependent Claim
175 words
An electric actuator comprising a housing, a permanent magnet disposed within said housing, an axially movable armature disposed within said housing, an actuating coil supported by said housing for driving said armature to axially move, and an axially moveable actuating rod fixedly connected to said armature, wherein said electric actuator further comprises a pair of elastic support members having radially inner end portions fixedly connected to said actuating rod at opposite portions thereof adjacent said armature and radially outer end portions fixedly connected to said housing, respectively, each of said elastic support members consisting of a plurality of thin leaves laminated one upon the other, each of said elastic support members being formed with a plurality of arm portions equiangularly spaced apart with respect to one another and radially extending between said radially inner and outer end portions and a plurality of generally triangular openings each disposed between two adjacent arm portions, each of said arm portions being axially deflected with respect to said radially inner and outer end portions of said elastic support member.
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) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |