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US3808719A Expired / Lapsed US ⏱️ 0.0 years remaining

Escapement mechanism

Assignee: Hasbro Inc
•
Filing: 1972-07-03
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Granted: 1974-05-07
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Expires: 1992-07-03
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Abstract

Abstract A driven mobile having a plug secured to a first shaft with a plurality of arms radially extending from the plug. Objects of interest are secured to each arm and means is provided for allowing each object to oscillate about the arm to which it is attached as said first shaft is rotated. A spring motor is provided for supplying energy for rotating the first shaft. An escapement mechanism controls the rotation of the first shaft and includes a tube that is rotatable in conjunction with the first shaft. The tube is enclosed at its ends and has a pair of magnets therein. The magnets have their south poles facing each other with the north poles diametrically opposed to each other. The magnets can move within the tube. A lever is positioned adjacent the tube bottom when the tube is vertical, is rotatable about an axis to a vertical position and includes a stop. The stop prevents rotation of the tube when the lever is in the vertical position. A magnetic means biases the lever to the vertical position. If the tube is in a vertical position with the magnets therein at the top of the tube, the lever will be in a vertical position as a result of the magnetic biasing means and the stop will prevent rotation of the tube. The magnets in the tube will descend to the bottom of the tube under the influence of gravity and the bottommost magnet overcomes the magnetic biasing means and any frictional forces and causes the lever to be moved out of its vertical position. Consequently, the tube and first shaft are free to rotate. After the tube is rotated a few degrees, the magnetic biasing means then moves the lever to a vertical position and the cycle is again repeated after the tube has come to a vertical position.

Inventors

  • 👤 A Stubbmann

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 16:33
CPC Classifications
G; G04; G04B; G04B45/00; G04B45/0038; G04B15/00; G09; G09F; G09F19/00; G09F19/12; G09F19/125

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 207 words
A driven mobile comprising: 1. an object of interest, 2. means rotatable about an axis, means mounting said object of interest on said means for rotation therewith, 3. a spring motor, 4. means connecting said motor to said rotatable means to rotate said rotatable means about said axis, and 5. means for intermittently stopping said connecting means, said means for intermittently stopping said connecting means comprising; a. a container drivenly rotatable with said rotatable means, b. a pair of magnets received within said container with like poles of each magnet facing the other magnet, c. means for allowing said magnets to move together relative to said container, d. a stop movable to a first position where it prevents rotation of said container and movable away from the first position, e. means for moving said stop to the first position and away from the first position after the container has been stopped for more than a pre-determined amount of time, said stop moving means including a third magnet fixed relative to said stop and for moving said stop, said third magnet positioned so that if either magnet in the container is adjacent said third magnet, said third magnet is repelled, thereby moving said stop from the first position.
Claim 2
Dependent Claim 207 words
A driven mobile comprising: 1. an object of interest, 2. means rotatable about an axis, means mounting said object of interest on said means for rotation therewith, 3. a spring motor, 4. means connecting said motor to said rotatable means to rotate said rotatable means about said axis, and 5. means for intermittently stopping said connecting means, said means for intermittently stopping said connecting means comprising; a. a container drivenly rotatable with said rotatable means, b. a pair of magnets received within said container with like poles of each magnet facing the other magnet, c. means for allowing said magnets to move together relative to said container, d. a stop movable to a first position where it prevents rotation of said container and movable away from the first position, e. means for moving said stop to the first position and away from the first position after the container has been stopped for more than a pre-determined amount of time, said stop moving means including a third magnet fixed relative to said stop and for moving said stop, said third magnet positioned so that if either magnet in the container is adjacent said third magnet, said third magnet is repelled, thereby moving said stop from the first position.
Claim 3
Dependent Claim 17 words
means rotatable about an axis, means mounting said object of interest on said means for rotation therewith,
Claim 4
Dependent Claim 17 words
means rotatable about an axis, means mounting said object of interest on said means for rotation therewith,
Claim 5
Dependent Claim 97 words
A driven mobile according to claim 1 wherein said motor is a spring motor and includes a first rotatable sheave and a second rotatable sheave, a strip of spring material joined to said first and second sheaves and windable about either of said sheaves and stressed so as to be self-winding about said first sheave when both of said sheaves are free to rotate, means for rotating said second sheave to wind said stressed material thereon, and said rotatable means rotatable in unison with said second sheave when said stressed material winds itself about said first sheave.
Claim 6
Dependent Claim 16 words
A driven mobile according to claim 1 wherein said motor is a constant torque spring motor.
Claim 7
Dependent Claim 3 words
a spring motor,
Claim 8
Dependent Claim 3 words
a spring motor,
Claim 9
Dependent Claim 17 words
means connecting said motor to said rotatable means to rotate said rotatable means about said axis, and
Claim 10
Dependent Claim 17 words
means connecting said motor to said rotatable means to rotate said rotatable means about said axis, and
Claim 11
Dependent Claim 157 words
means for intermittently stopping said connecting means, said means for intermittently stopping said connecting means comprising; a. a container drivenly rotatable with said rotatable means, b. a pair of magnets received within said container with like poles of each magnet facing the other magnet, c. means for allowing said magnets to move together relative to said container, d. a stop movable to a first position where it prevents rotation of said container and movable away from the first position, e. means for moving said stop to the first position and away from the first position after the container has been stopped for more than a pre-determined amount of time, said stop moving means including a third magnet fixed relative to said stop and for moving said stop, said third magnet positioned so that if either magnet in the container is adjacent said third magnet, said third magnet is repelled, thereby moving said stop from the first position.
Claim 12
Dependent Claim 157 words
means for intermittently stopping said connecting means, said means for intermittently stopping said connecting means comprising; a. a container drivenly rotatable with said rotatable means, b. a pair of magnets received within said container with like poles of each magnet facing the other magnet, c. means for allowing said magnets to move together relative to said container, d. a stop movable to a first position where it prevents rotation of said container and movable away from the first position, e. means for moving said stop to the first position and away from the first position after the container has been stopped for more than a pre-determined amount of time, said stop moving means including a third magnet fixed relative to said stop and for moving said stop, said third magnet positioned so that if either magnet in the container is adjacent said third magnet, said third magnet is repelled, thereby moving said stop from the first position.

References Cited (Backward Citations)

US1275791A Cited
US2068531A Cited
US3531062A Cited
DE1912512A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-05-06 1977-11-05 1978-05-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-05-06 1981-11-05 1982-05-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-05-06 1985-11-05 1986-05-07 $7700.00 Window Closed / Lapsed

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