US3731394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal dehydrator
Assignee: Toshiba Corp
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Filing: 1971-12-13
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Granted: 1973-05-08
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Expires: 1991-12-13
Abstract
Abstract A centrifugal debydrator wherein the drive of a motor is transmitted to a rotatable support through a drive transmission mechanism which renders a brake mechanism inoperable and rotates a spin basket and when the motor is brought to stop by the inertia of the spin basket the brake mechanism is actuated and rotatable support is disconnected from the drive transmission mehanism thereby to immediately stop the rotation of the spin basket.
Inventors
- 👤 M Onishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:30
CPC Classifications
B; B04; B04B; B04B9/00; B04B9/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
207 words
A centrifugal dehydrator comprising a spin basket provided with a rotatable shaft; support means fitted to said rotatable shaft; a brake mechanism comprising a movable brake member and stationary cylindrical member, the brake member rotatably supported by the support means and including a first section for carrying out braking action in co-operation with the stationary braking member and a second section for rotating the movable brake member to cause said braking action through engagement of the contact plane, said stationary cylindrical member receiving the support means and movable brake member; drive means provided with a drive shaft; and a drive transmission cam having a contact face and fitted to said drive shaft to rotate therewith, whereby, during dehydration, the rotation of said drive shaft is transmitted to the support means through the drive transmission means and the support means ceases the braking action of the brake means to permit the rotation of the spin basket, and when the drive shaft is going to be brought to stop, the inertia of the still rotating spin basket urges the movable member of the brake means to perform a braking action, thereby disconnecting the support means from the drive transmission means finally to brake the rotation of the spin basket.
Claim 2
Dependent Claim
207 words
A centrifugal dehydrator comprising a spin basket provided with a rotatable shaft; support means fitted to said rotatable shaft; a brake mechanism comprising a movable brake member and stationary cylindrical member, the brake member rotatably supported by the support means and including a first section for carrying out braking action in co-operation with the stationary braking member and a second section for rotating the movable brake member to cause said braking action through engagement of the contact plane, said stationary cylindrical member receiving the support means and movable brake member; drive means provided with a drive shaft; and a drive transmission cam having a contact face and fitted to said drive shaft to rotate therewith, whereby, during dehydration, the rotation of said drive shaft is transmitted to the support means through the drive transmission means and the support means ceases the braking action of the brake means to permit the rotation of the spin basket, and when the drive shaft is going to be brought to stop, the inertia of the still rotating spin basket urges the movable member of the brake means to perform a braking action, thereby disconnecting the support means from the drive transmission means finally to brake the rotation of the spin basket.
Claim 3
Dependent Claim
42 words
The centrifugal dehydrator according to claim 1 wherein the support means has a projection; and there is stretched a compression spring between said projection and the movable brake member to urge the first section toward the stationary brake member to effect braking.
Claim 4
Dependent Claim
23 words
The centrifugal dehydrator according to claim 2 wherein the brake means has a brake shoe disposed between the stationary and movable brake members.
Claim 5
Dependent Claim
22 words
The centrifugal dehydrator according to claim 1 wherein the stationary brake member is provided with a flange for covering the drive means.
Claim 6
Dependent Claim
19 words
The centrifugal dehydrator according to claim 1 wherein the second section of the movable brake member comprises a roller.
Claim 7
Dependent Claim
59 words
The centrifugal dehydrator according to claim 1 wherein the contact face of the cam includes a curved plane pressed against the second section of the movable brake member at the initial and final rotation of the rotatable shaft of the drive source and a flat plane pressed against said second section during the full rotation of the rotatable shaft.
Claim 8
Dependent Claim
30 words
The centrifugal dehydrator according to claim 1 wherein the spin basket and drive means are received in a case, said drive means being supported in the case by elastic members.
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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |