US3842296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable rotation-controlling device for synchronous motor
Assignee: Johnson Electric Switzerland AG
•
Filing: 1973-06-19
•
Granted: 1974-10-15
•
Expires: 1993-06-19
Abstract
Abstract A synchronous motor of which the rotor may start in two opposite directions when the stator is energized, the rotor being coupled with locking means movable in accordance with the starting direction of the rotor, movement of said locking means in one direction resulting in locking and reversing of the initial rotation of the rotor and said locking means being adjustable into two conditions for preventing in each condition starting of the rotor in one direction.
Inventors
- 👤 H Gerber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:51
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/118; H02K7/1185
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
68 words
A synchronous motor according to claim 1, comprising stop means adjustable into Two operating positions for said locking member, allowing displacement of said locking member into a locking position in one of two opposite directions for each of said operating positions of said stop means, such that the rotor is able to start in the one or other direction in accordance with the positions of said stop means.
Claim 2
Dependent Claim
24 words
A synchronous motor according to claim 2, wherein said torque transmitting means is a torque transmitting coupling between the rotor and said locking member.
Claim 3
Dependent Claim
26 words
A synchronous motor according to claim 3, wherein said coupling is on said rotor, the one half of said coupling engaging a swingably mounted locking member.
Claim 4
Dependent Claim
53 words
A synchronous motor according to claim 4, wherein a toothed wheel is loosely mounted on the rotor shaft between a first friction member fixed on the rotor shaft and a second spring loaded friction member loosely mounted on the rotor shaft, said toothed wheel meshing with a toothed segment of said locking member.
Claim 5
Dependent Claim
31 words
A synchronous motor according to claim 1, comprising a swingably mounted locking member having pawls swingable into said locking toothing of the rotor, said locking member cooperating with adjustable stop means.
Claim 6
Dependent Claim
22 words
A synchronous motor according to claim 6, wherein said pawls are disposed for engagement into an external locking toothing of the rotor.
Claim 7
Dependent Claim
19 words
A synchronous motor according to claim 6, wherein said locking member has a tooth engaging between adjustable stop surfaces.
Claim 8
Dependent Claim
22 words
A synchronous motor according to claim 6, wherein said pawls are disposed for engagement into an internal locking toothing of the rotor.
Claim 9
Dependent Claim
118 words
In a synchronous motor having a locking device acting onto the rotor, wherein said device is adjustable into two operating positions, running of the rotor in one of its rotating directions being locked for each of said operating positions of the locking device, the improvement wherein a first toothed wheel rotatably mounted on a swingable lever gears with a second toothed wheel fixed on the rotor, said swingable arm cooperating with a stop adjustable into two positions, said stop allowing for each of its positions a swinging movement of said swingable arm into the one of two opposite end positions, said first toothed wheel engaging a locking tooth in each of said end positions of said swingable arm.
Claim 10
Dependent Claim
18 words
A synchronous motor according to claim 10, wherein said swingable arm is rotatably mounted on the rotor shaft.
Claim 11
Dependent Claim
139 words
A synchronous motor having a locking device acting onto the rotor, wherein said device is adjustable into two operating positions, running of the rotor in one of its rotating directions being locked for each of said operating positions of the locking device, comprising a toothed wheel having teeth of symmetrical profile and fixed on the rotor shaft, a cradle with a pair of toothed locking wheels rotatably mounted thereon, said cradle being swingable round an axis for selectively engaging the one of said locking wheels with said toothed wheel, said locking wheels having each a number of teeth of which the profile corresponds to one half situated at one side of an axial symmetry plane of the profile of the teeth of the toothed wheel, such halves of tooth profiles being omitted at opposite sides on the locking wheels.
Claim 12
Dependent Claim
19 words
A synchronous motor according to claim 12, wherein said locking wheels also have teeth with a complete symmetrical profile.
Claim 13
Dependent Claim
19 words
A synchronous motor according to claim 13, wherein each third tooth of said locking wheels has a symmetrical profile.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |