Patent US3674948A successfully refreshed from Google Patents.
US3674948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanism having cycle switches selectively actuating a mode switch
Assignee: Bell and Howell Co
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Filing: 1971-02-02
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Granted: 1972-07-04
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Expires: 1991-02-02
Abstract
Abstract A control mechanism is provided for selecting among predetermined operational modes of an instrument upon actuation of selected of a plurality of manually operable cycle switches. The cycle switches are coupled mechanically with a mode switch which is adjustable to be actuated to one of the operative modes upon first actuation of a cycle switch following an actuation of another cycle switch. The last actuated cycle switch may be cycled repeatedly without changing the mode switch.
Inventors
- 👤 Frank W Betlejewski
- 👤 Sanford M Hanberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:14
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/72; G; G03; G03B; G03B23/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A control mechanism for selecting among predetermined operative modes of an instrument, comprising: a plurality of manually operable cycle switches connected in an energizeable circuit; a mode switch having an actuator movable to a plurality of positions corresponding to said operative modes for energizing mode circuitry of the energizeable circuit responsive to each position; and mechanical means coupling said cycle switches and said mode switch for selectively moving said mode switch actuator to one of said mode positions responsive to operation of one of said cycle switches, and to another of said mode positions responsive to operation of another of said cycle switches for conditioning said circuitry in response to said cycle switches, said mode switch actuator being restrained in one of said positions until displaced by another cycle switch to another of said positions.
Claim 2
Dependent Claim
135 words
A control mechanism for selecting among predetermined operative modes of an instrument, comprising: a plurality of manually operable cycle switches connected in an energizeable circuit; a mode switch having an actuator movable to a plurality of positions corresponding to said operative modes for energizing mode circuitry of the energizeable circuit responsive to each position; and mechanical means coupling said cycle switches and said mode switch for selectively moving said mode switch actuator to one of said mode positions responsive to operation of one of said cycle switches, and to another of said mode positions responsive to operation of another of said cycle switches for conditioning said circuitry in response to said cycle switches, said mode switch actuator being restrained in one of said positions until displaced by another cycle switch to another of said positions.
Claim 3
Dependent Claim
60 words
A control mechanism as in claim 1, wherein said cycle switches respectively control forward and reverse modes, and said mechanical means comprises a pivoted lever having pusher portions for engaging and positively moving said mode switch actuator to one of said positions upon first operation of one of said cycle switches following an operation of another of said cycle switches.
Claim 4
Dependent Claim
46 words
A contrOl mechanism as in claim 1, wherein said cycle switches are biased return slide switches arranged to cause positive positioning of said mode switch actuator only upon first operation of one of said slide switches against the biasing return following operation of another slide switch.
Claim 5
Dependent Claim
79 words
A control mechanism as in claim 1, wherein said mechanical coupling means is pivotable between at least two positions and each of said cycle switches includes a mechanical portion engageable with said mechanical coupling means to selectively pivot said coupling means in response to operation of said cycle switches whereby said mode switch actuator is moved to one mode by operation of one of said cycle switches and to another mode by operation of another of said cycle switches.
Claim 6
Dependent Claim
54 words
A control mechanism as in claim 1, wherein said mode switch is selectively connectable in separate branch lines permitting current flow in predetermined directions, said cycle switches are connected to complete a circuit portion through one of said branch lines upon actuation wherein said circuit is completed for current flow in the desired direction.
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |