Patent US3663827A successfully refreshed from Google Patents.
US3663827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stepping assembly and circuit
Assignee: Oak Electro Netics Corp
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Filing: 1970-05-27
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Granted: 1972-05-16
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Expires: 1990-05-27
Abstract
Abstract An intervalometer uses a rotary switch mounted to base through shafts which maintain concentricity. An offset stepping mechanism drives the switch under control of a drive energizing circuit having interrupter contacts on the switch. A load energizing circuit includes additional contacts on the switch for sequentially energizing a plurality of independent loads, while shunting all nonenergized loads. Separate switch sections separate the drive energizing circuit from the load energizing circuit. When the switch is in a home position, it must be manually rotated to another position before automatic sequential stepping can occur.
Inventors
- 👤 Frederick M Ford
- 👤 Raymond J Silhavy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:58
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/02; H01H51/04; H01H51/06; H01H51/08; H01H51/082; H01H51/086; H01H3/00; H01H3/22; H01H3/26; H01H3/32; H01H3/34
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
202 words
A stepping assembly and circuit for sequentially energizing a plurality of separate loads each having at least first and second terminals, comprising: a stepping motor assembly actuable to move a member along a path; a source of electric power having reference means and potential means with a potential difference therebetween for energizing said plurality of loads; switching means including a plurality of contacts each associated with one of said loads, rotor means including a first element sequentially connectable with each of said contacts and a common element connectable with the remaining contacts not connected to said first element; means individually connecting each of said plurality of contacts to the second terminal of the load associated therewith; link means connecting said stepping motor assembly member to said rotor means for step movement of said rotor means upon actuation of said stepping motor assembly; means for periodically actuating said stepping motor assembly to stepwise move said rotor means; means connecting said common element to said reference means; and means connecting said first element to said potential means for energizing only one of said plurality of loads for each step movement of said rotor means, whereby the nonenergized loads remain coupled across said reference means.
Claim 2
Dependent Claim
202 words
A stepping assembly and circuit for sequentially energizing a plurality of separate loads each having at least first and second terminals, comprising: a stepping motor assembly actuable to move a member along a path; a source of electric power having reference means and potential means with a potential difference therebetween for energizing said plurality of loads; switching means including a plurality of contacts each associated with one of said loads, rotor means including a first element sequentially connectable with each of said contacts and a common element connectable with the remaining contacts not connected to said first element; means individually connecting each of said plurality of contacts to the second terminal of the load associated therewith; link means connecting said stepping motor assembly member to said rotor means for step movement of said rotor means upon actuation of said stepping motor assembly; means for periodically actuating said stepping motor assembly to stepwise move said rotor means; means connecting said common element to said reference means; and means connecting said first element to said potential means for energizing only one of said plurality of loads for each step movement of said rotor means, whereby the nonenergized loads remain coupled across said reference means.
Claim 3
Dependent Claim
92 words
The stepping assembly and circuit of claim 1 wherein said switching means includes interrupter means actuable by step movement of the rotor means for changing the electrical state of a switch, said reciprocal drive assembly includes a coil eNergizable by said potential difference for actuating said reciprocal drive assembly to move said member along said path, and said periodically actuating means includes means connecting said coil in series with said switch and across said reference means and said potential means for energizing said coil for each stepwise movement of said rotor means.
Claim 4
Dependent Claim
107 words
The stepping assembly and circuit of claim 2 wherein said switching means includes a home contact in addition to said plurality of contacts each associated with one of said loads, said rotor means connecting said first element to said home contact when said switching means is stepwise at a home position, and said coil connecting means includes means effective when said switching means is at said home position for substituting the connection to said potential means with a connection to said reference means, whereby both said coil and said plurality of loads are coupled across said reference means when said switching means is at said home position.
Claim 5
Dependent Claim
58 words
The stepping assembly and circuit of claim 3 wherein said rotor means includes manually movable means for stepwise moving said switching means from said home position to another position to allow said circuit to thereafter control stepping of said switching means, whereby said switching means requires manual actuation before said circuit automatically sequentially energizes said plurality of loads.
Claim 6
Dependent Claim
79 words
The stepping assembly and circuit of claim 2 wherein said rotor means includes a first rotor section having said first element and said common element mounted thereon and a second rotor section having a third element electrically independent of said first element and said common element, said switching means further includes contact means connectable with said third element, and said coil connecting means includes said contact means and said third element in series with said coil and said switch.
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |