US3610753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timer for controlling the operation of devices and implements, especially stoves
Assignee: Diehl Verwaltungs Stiftung
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Filing: 1969-11-06
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Granted: 1971-10-05
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Expires: 1989-11-06
Abstract
Abstract A timing mechanism especially for cooking appliances, in which a pointer is adjustable over a clock face to indicate the end of a cooking period, while a dial is adjustable to indicate the duration of the cooking period. A planetary gear arrangement interconnects the dial and the pointer and adjusts one of a pair of clutch elements, the other of which is driven by the timer motor. Adjustment of the dial presets a power control device and when the clutch parts are in a certain relative position they clutch together and initiate the supply of power to the appliance, and which is automatically terminated when the preselected time expires.
Inventors
- 👤 Josef Neubauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:10
CPC Classifications
G; G04; G04C; G04C23/00; G04C23/14; G04C23/16; G04C23/02; G04C23/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
337 words
A timer mechanism, especially for use with appliances such as cooking stoves, comprising: a frame with a clock, first manual means for adjusting the end of a time period with a pointer, second manual means in coaxial relation to the first manual means for adjusting a short-time period, third manual means for adjusting the time, fourth manual means in coaxial relation to that third manual means for adjusting a selected time period which is to end at the time indicated by the pointer, the second manual means being mechanically connected with a first dial for indicating the short time period and the fourth manual means being mechanically connected with a second dial indicating the said time period, the said clock having a face and hands, a tubular shaft telescoping the shafts for said hands, the said pointer being mounted on said tubular shaft and indicating the end of the selected time period on said clock face, a clutch having a first disc driven by the driven shaft means of the clock and also having a second disc coaxial with said first disc, a spring urging said discs apart and clutch actuating means operable for resiliently urging said discs toward each other, clutch elements on said discs engageable only when in registration and said clutch discs are urged toward each other by said clutch actuating means, a control arm biased toward a first position and having a second position and said positions corresponding respectively to appliance power-off and appliance power-on, a rotatable cam engaging said arm and permitting said arm to move to said first position thereof in only one rotated position of said cam, means making said clutch actuating means ineffective in said one position of said arm, and a three element planetary gear drive having a first element connected to said second disc and a second element connected to said pointer and to said first manual means and a third element connected to said cam and to said second dial and to said fourth manual means.
Claim 2
Dependent Claim
337 words
A timer mechanism, especially for use with appliances such as cooking stoves, comprising: a frame with a clock, first manual means for adjusting the end of a time period with a pointer, second manual means in coaxial relation to the first manual means for adjusting a short-time period, third manual means for adjusting the time, fourth manual means in coaxial relation to that third manual means for adjusting a selected time period which is to end at the time indicated by the pointer, the second manual means being mechanically connected with a first dial for indicating the short time period and the fourth manual means being mechanically connected with a second dial indicating the said time period, the said clock having a face and hands, a tubular shaft telescoping the shafts for said hands, the said pointer being mounted on said tubular shaft and indicating the end of the selected time period on said clock face, a clutch having a first disc driven by the driven shaft means of the clock and also having a second disc coaxial with said first disc, a spring urging said discs apart and clutch actuating means operable for resiliently urging said discs toward each other, clutch elements on said discs engageable only when in registration and said clutch discs are urged toward each other by said clutch actuating means, a control arm biased toward a first position and having a second position and said positions corresponding respectively to appliance power-off and appliance power-on, a rotatable cam engaging said arm and permitting said arm to move to said first position thereof in only one rotated position of said cam, means making said clutch actuating means ineffective in said one position of said arm, and a three element planetary gear drive having a first element connected to said second disc and a second element connected to said pointer and to said first manual means and a third element connected to said cam and to said second dial and to said fourth manual means.
Claim 3
Dependent Claim
50 words
A timer mechanism according to claim 1 which includes a clock in said frame having a face and hands, and a tubular shaft telescoping the shafts for said hands, said pointer being mounted on said tubular shaft and indicating the end of the selected time period on said clock face.
Claim 4
Dependent Claim
47 words
A timer mechanism according to claim 2, in which said frame has a front portion, said clock face and first dial being observable from front of said frame, said first and fourth manual means comprising first and second knobs respectively at the front portion of said frame.
Claim 5
Dependent Claim
81 words
A timer mechanism according to claim 3, a said second manual means being in the form of a second knob connected to said first dial for rotation thereof, Timer further includes friction drive means for connecting said first dial with said timer driven shaft means, said first dial being disengaged from said friction drive means in one adjusted position only of the first dial, and signal means actuated by said first dial in response to movement thereof into said one position.
Claim 6
Dependent Claim
59 words
A timer mechanism according to claim 4, wherein said third manual means includes a third knob for adjusting said clock hands, said first and second knobs being arranged in coaxially relation at said front panel, and said second and third knobs being arranged in coaxial relation at said front panel in spaced relation to said first and third knobs.
Claim 7
Dependent Claim
40 words
A timer mechanism according to claim 5, in which said frame has a front panel with a window formed therein for said clock face and with apertures therein through which marginal regions of said first and second dials are visible.
Claim 8
Dependent Claim
30 words
A timer mechanism according to claim 6, in which said first and second dials have gear teeth, and gears meshing with said gear teeth and connected to the respective knobs.
Claim 9
Dependent Claim
49 words
A timer mechanism according to claim 6, in which the first and second dials are moveable by the respective knobs therefor away from a zero position into position to indicate respective time periods and are moved in the direction of decreasing time display by said timer driven shaft means.
Claim 10
Dependent Claim
26 words
A timer mechanism according to claim 8, in which the said first and second dials and the respective viewing apertures therefor are adjacent the respective knobs.
Claim 11
Dependent Claim
20 words
A timer mechanism according to claim 4, in which coaxial ones of said knobs are mounted on telescoping rotary shafts.
Claim 12
Dependent Claim
82 words
A timer mechanism according to claim 6, in which said first element of said planetary gear drive is the planet gear and a shaft mounted on said second disc rotatably supports said planet gear, said second element comprising the sun gear and means connecting the sun gear to said pointer and said first manual means, said third element comprising the ring gear, and means connecting said ring gear to said cam and to said first dial and to said second manual means.
Claim 13
Dependent Claim
20 words
A timer mechanism according to claim 11, in which said cam is coaxial with and mounted on said ring gear.
Claim 14
Dependent Claim
33 words
A timer mechanism according to claim 11, in which said clutch elements comprise a hole in one of said discs and a projection on the other of said discs receivable in said hole.
Claim 15
Dependent Claim
37 words
A timer mechanism according to claim 12, in which said cam is circular with a single peripheral notch therein, said control arm having a follower bearing on the periphery of said cam and receivable in said notch.
Claim 16
Dependent Claim
62 words
A timer mechanism according to claim 14, in which the resistance offered to rotation of said pointer and sun gear by said friction means is adequate to prevent rotation of said sun gear when said planetary gear is driven about the sun gear by rotation of said second disc and also when said ring gear is rotated by said second manual means.
References Cited (Backward Citations)
US3098131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |