US3609491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selectable mode multipushbutton switch
Assignee: Dynamics Corp of America
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Filing: 1969-12-02
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Granted: 1971-09-28
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Expires: 1989-12-02
Abstract
Abstract A motor-driven appliance including a multipushbutton switch with permutatable control sliders and switches providing different speeds selectively in association with a mode control to provide either a continuous or a momentary run of the appliance when any of the speed selection pushbuttons is manually pressed. The mode control in one position returns the sliders to ''''OFF'''' position when a pushbutton is released that was being pressed, while in another position the sliders remain in a continuous run position when the pressed pushbutton is released. The mode is selected by varying the tension upon a spring which urges the return of sliders and pushbuttons to a predetermined position. The mode can be changed during operation of the liquidizer and can serve as a stop control.
Inventors
- 👤 Roy L Swanke
- 👤 Bruno M Valbona
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:16
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/02; H02P25/10; H02P25/14; H01; H01H; H01H13/00; H01H13/70; H01H13/72
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
192 words
In a speed control for a fractional-horsepower universal motor having a plurality of cowound field coils of different impedances on the stator, the combination of: circuit means including a first switch having a normally closed, movable conductor between two of the coils to connect the coils in series between one side of a power source and the motor Armature; a connection between the two coils including a second switch having a normally closed, movable conductor to shunt one of the coils and said first switch; a connection between the two coils including a third switch having a normally closed, movable conductor to shunt the other one of the coils and said first switch; switch control means for manually controlling said switch conductors for selected permutations of said field coils to provide a speed range of various impedances and including actuator means for opening said first, second, and third switch conductors concurrently; and selector means including a resilient element and manually movable to one position to resiliently urge said actuator means to open said first, second and third switch conductors when any of said movable conductors closing same are released from manual actuation.
Claim 2
Dependent Claim
192 words
In a speed control for a fractional-horsepower universal motor having a plurality of cowound field coils of different impedances on the stator, the combination of: circuit means including a first switch having a normally closed, movable conductor between two of the coils to connect the coils in series between one side of a power source and the motor Armature; a connection between the two coils including a second switch having a normally closed, movable conductor to shunt one of the coils and said first switch; a connection between the two coils including a third switch having a normally closed, movable conductor to shunt the other one of the coils and said first switch; switch control means for manually controlling said switch conductors for selected permutations of said field coils to provide a speed range of various impedances and including actuator means for opening said first, second, and third switch conductors concurrently; and selector means including a resilient element and manually movable to one position to resiliently urge said actuator means to open said first, second and third switch conductors when any of said movable conductors closing same are released from manual actuation.
Claim 3
Dependent Claim
45 words
The combination called for in claim 1 in which said switch control means includes another actuator means for closing one of said second and third switch conductors and opening the other one of said second and third switch conductors and said first switch conductor concurrently.
Claim 4
Dependent Claim
41 words
The combination called for in claim 2 in which the first-mentioned actuator means controlling said switch conductors opens said one of the second and third switch conductors concurrently with the opening of said third and said other of said switch conductors.
Claim 5
Dependent Claim
36 words
The combination called for in claim 1 including a fourth switch having a normally closed, movable conductor connected in series with said three switches; said selector means urging said actuator means to open said fourth switch.
Claim 6
Dependent Claim
25 words
The combination called for in claim 4 in which said fourth switch is opened in timed sequential relationship following the opening of said three switches.
Claim 7
Dependent Claim
33 words
The combination called for in claim 2 in which said actuator means comprises: a pair of switch control sliders independently movable between alternate positions to provide the permutations of said switch closures cooperatively.
Claim 8
Dependent Claim
133 words
The combination called for in claim 6 in which two cams for each slider are oppositely inclined, each at two of three switch stations separately and oppositely inclined at the common one of the three switch stations; one of said sliders having cams to close the second and third switch conductors while opening the first switch conductor with movement in one direction and opening the second and third switch conductors while closing said first switch conductor with movement in the other direction; the other one of said sliders having cams coordinated with the movement of said first slider to alternately open and close said third switch conductor when said second switch conductor is closed, and to alternately open and close said first switch conductor when said second and third switch conductors are open.
Claim 9
Dependent Claim
101 words
In a speed control circuit for universal motors powered by alternating current the combination of: a plurality of field coils of predetermined electrical impedances; manually actuated switching means in said circuit including a plurality of switches for interconnecting the coils in various permutations to vary the composite effective impedance for the motor field and including one permutation which opens the circuit; and manually actuated selector means including a resilient element and movable between two position to resiliently urge in one position said switching means to said one permutation to open said circuit when said switching means is released from manual actuation.
Claim 10
Dependent Claim
101 words
In a speed control circuit for universal motors powered by alternating current the combination of: a plurality of field coils of predetermined electrical impedances; manually actuated switching means in said circuit including a plurality of switches for interconnecting the coils in various permutations to vary the composite effective impedance for the motor field and including one permutation which opens the circuit; and manually actuated selector means including a resilient element and movable between two position to resiliently urge in one position said switching means to said one permutation to open said circuit when said switching means is released from manual actuation.
Claim 11
Dependent Claim
58 words
The combination called for in claim 8 in which said selector means includes a manually movable element; said resilient element comprising a spring interengaging said manually movable element and said manually actuated switching means; and said manually movable element varying the resilient force urging said switching means to open the circuit when said switching means is manually released.
Claim 12
Dependent Claim
139 words
In an electrically powered appLiance with current responsive elements of predetermined impedances: a control switch means including a plurality of switch elements for selectively connecting said elements to a source of electrical power; switch-actuating means having a permutation disposing said switch elements in an OFF condition including; a control element movable between two positions one of which is a switch-opening position and the other a switch-closing position; a manually advanced element to move said control element to said switch-closing position and when manually released permit said control element to remain in said switch-closing position and to hold the switch closed for energizing at least one of said current responsive elements; and manually selective means including a releasable resilient element manually actuated to urge said control element to its switch-opening position when said control element is free to so move.
Claim 13
Dependent Claim
139 words
In an electrically powered appLiance with current responsive elements of predetermined impedances: a control switch means including a plurality of switch elements for selectively connecting said elements to a source of electrical power; switch-actuating means having a permutation disposing said switch elements in an OFF condition including; a control element movable between two positions one of which is a switch-opening position and the other a switch-closing position; a manually advanced element to move said control element to said switch-closing position and when manually released permit said control element to remain in said switch-closing position and to hold the switch closed for energizing at least one of said current responsive elements; and manually selective means including a releasable resilient element manually actuated to urge said control element to its switch-opening position when said control element is free to so move.
Claim 14
Dependent Claim
22 words
The combination called for in claim 10 including another manually advanced element to move said control element to its switch opening position.
Claim 15
Dependent Claim
60 words
The combination called for in claim 10 in which said plurality of switches comprise three switches and said control means comprises two reciprocable control elements actuating said three switches to provide four switch permutations in one of which the three switches are open position to deenergize said appliances, said selective means urging said control elements to said one permutation position.
Claim 16
Dependent Claim
83 words
The combination called for in claim 10 in which said plurality of switches comprise four switches and said control means comprises at least two reciprocable control elements actuating three of said switches to provide four switch permutations in which three permutations are the same and include the fourth switch; switch means in series with said four switches for varying the impedances controlled by said three switches and opening said fourth switch means; and a halfwave rectifier connected in parallel with said fourth switch.
Claim 17
Dependent Claim
118 words
In an electrical powered appliance having an impedance factor: a permutation switch including a switch selection means; a plurality of switches for varying the impedance factor of said appliance; said switch selection means including control means movable between a plurality of switch permutation positions one of which is a switch-opening position; a manually advanced element to move said control means to the other position and leave it there to close said switch and energize said appliance; and selective means movable between two positions to apply a resilient force in one of said positions to said control means to return it from said other position to its OFF position when said manually movable element is free of manual restraint.
Claim 18
Dependent Claim
118 words
In an electrical powered appliance having an impedance factor: a permutation switch including a switch selection means; a plurality of switches for varying the impedance factor of said appliance; said switch selection means including control means movable between a plurality of switch permutation positions one of which is a switch-opening position; a manually advanced element to move said control means to the other position and leave it there to close said switch and energize said appliance; and selective means movable between two positions to apply a resilient force in one of said positions to said control means to return it from said other position to its OFF position when said manually movable element is free of manual restraint.
Claim 19
Dependent Claim
118 words
In an electrical powered appliance having an impedance factor: a permutation switch including a switch selection means; a plurality of switches for varying the impedance factor of said appliance; said switch selection means including control means movable between a plurality of switch permutation positions one of which is a switch-opening position; a manually advanced element to move said control means to the other position and leave it there to close said switch and energize said appliance; and selective means manually movable between two positions in one of which it applies a resilient force to said control means to return it from said other position to its OFF position when said manually movable element is free of manual restraint.
Claim 20
Dependent Claim
118 words
In an electrical powered appliance having an impedance factor: a permutation switch including a switch selection means; a plurality of switches for varying the impedance factor of said appliance; said switch selection means including control means movable between a plurality of switch permutation positions one of which is a switch-opening position; a manually advanced element to move said control means to the other position and leave it there to close said switch and energize said appliance; and selective means manually movable between two positions in one of which it applies a resilient force to said control means to return it from said other position to its OFF position when said manually movable element is free of manual restraint.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |