Claims
- 1. A linear no-back device for transmitting bi-directional linear motion from an input shaft to a coaxial output shaft while preventing motion of the output shaft independently of the input shaft comprising, releasable means locking the output shaft against movement, means movable with the input shaft for acting on the releasable means for release thereof to enable movement of the output shaft with the input shaft, and motion-transmitting means between the input and output shafts including a preloaded compression coil spring which absorbs the motion of the input shaft if the output shaft is unable to move.
- 2. A linear no-back device as defined in claim 1 wherein said releasable means comprises a pair of conical discs with a plurality of flexible ears at the periphery thereof.
- 3. A linear no-back device as defined in claim 2 wherein said means movable with the input shaft includes an actuator member engageable with the flexible ears of a conical disc to flex said ears to an unlocking position.
- 4. A linear no-back device for transmitting bi-directional linear motion from an input shaft to an output shaft while preventing motion of the output shaft independently of the input shaft comprising, a fixed member having a bore, a pair of oppositely-acting spring discs loosely mounted on the output shaft and having peripheral flexible means in engagement with a wall of said bore, a pair of spaced-apart stop means on the output shaft for limiting separating movement of said spring discs axially of the output shaft, means urging said spring discs away from each other including a pair of members engageable one with each of said spring discs and a preloaded compression coil spring therebetween, and means movable with the input shaft for effectively disengaging said spring discs from said wall and acting on one of said members to transmit motion to the output shaft through said compression coil spring, the other of said members and one of said stop means.
- 5. A linear no-back device for transmitting bi-directional linear motion from an input shaft to an output shaft while preventing motion of the output shaft independently of the input shaft comprising, a fixed member having a bore, a pair of conical spring discs loosely mounted on the output shaft and having flexible ears in engagement with a wall of said bore, the ears engaging said wall at an angle whereby movement of a spring disc in one direction is prevented and movement in the other direction is permitted, a pair of spaced-apart stop means on the output shaft for limiting separating movement of said spring discs axially of the output shaft, means urging said spring discs away from each other including a pair of members engageable one with each of said spring discs and a preloaded compression coil spring therebetween, and an actuator member movable with the input shaft for flexing the ears of one spring disc away from said wall and acting on one of said members to transmit motion to the output shaft through said compression coil spring, the other of said members and one of said stop means with the ears of the other of said spring discs sliding along the wall of said bore.
- 6. A linear no-back device comprising, a fixed member having an internal opening with a wall, an output shaft with a part thereof positioned in said opening and having a pair of spaced-apart stop rings thereon, a pair of generally conical spring discs loosely mounted on said part of the output shaft and each having a plurality of ears engageable with said wall, said spring discs having concave inner faces facing each other and outer faces, a pair of blocks loosely mounted on said output shaft part and each having a conical face to engage an inner face of a spring disc radially inwardly of said ears, a preloaded compression coil spring surrounding said output shaft part and positioned between said blocks for engagement therewith to urge the spring discs against said stop rings, an input shaft, a pair of actuator members positioned to engage the outer faces of said spring discs and said ears whereby movement of an actuator member toward the adjacent spring disc will disengage the ears of the last-mentioned spring disc from said wall followed by movement of the spring disc and adjacent block, and means connecting said actuator members to said input shaft for movement therewith.
- 7. A linear no-back device comprising, a fixed member having a cylindrical bore with a wall having oppositely-facing ratchet teeth adjacent opposite ends thereof, an output shaft with a part thereof positioned in said bore and having a pair of spaced-apart stop rings thereon, a pair of oppositely-acting generally conical spring discs loosely mounted on said part of the output shaft and each having a plurality of ears engageable in said ratchet teeth, said spring discs having inner faces facing each other and outer faces, a pair of circular blocks loosely mounted on said output shaft part and each having a conical face to engage an inner face of a spring disc radially inwardly of said ears, a preloaded compression coil spring surrounding said output shaft part and positioned between said blocks for engagement therewith to urge the spring discs against said stop rings, an input shaft, a pair of actuator rings positioned to engage the outer faces of said spring discs and said ears whereby movement of an actuator ring toward the adjacent spring disc will release the ears of the last-mentioned spring disc from said ratchet teeth followed by movement of the spring disc and adjacent circular block, and means connecting said actuator rings to said input shaft for movement therewith.
- 8. A linear no-back device for transmitting bi-directional linear motion from an input shaft to an output shaft while preventing motion of the output shaft independently of the input shaft comprising, a fixed member with a bore, releasable means including a pair of conical spring discs operable one in each direction to lock the output shaft against movement, means including a pair of actuator rings movable with the input shaft with one acting on one conical disc in one direction of linear movement for release thereof and the other acting on the other conical disc in the opposite direction of linear movement to enable movement of the output shaft with the input shaft, and motion-transmitting means between the input and output shafts including a spring which absorbs the motion of the input shaft if the output shaft is unable to move.
Parent Case Info
This is a continuation of application Ser. No. 540,419 filed Oct. 11, 1983, now abandoned.
US Referenced Citations (14)
Continuations (1)
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Number |
Date |
Country |
Parent |
540419 |
Oct 1983 |
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