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US4438662A
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Automatic control system having manual control engageable at will
Assignee: ACR PROCESS Corp A CORP OF NY
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Filing: 1981-04-02
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Granted: 1984-03-27
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Expires: 2001-04-02
Abstract
Abstract Control system which may be manually operable without disengaging, automatically or otherwise, the automatic features of the control system.
Inventors
- 👤 Eric K. Walton
- 👤 Gary W. Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:46
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/40; G05B2219/00; G05B2219/30; G05B2219/34; G05B2219/34337; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18688
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
In a device for exercising control over a further member, which further member may be remotely located from said device, wherein said device includes an external power supply for exercising said control, the combination of a linear stepping motor and a remotely adjustable pulser for directing the exercise of said control, a coupling means between said linear stepping motor and said external power supply which is laterally movable and retained from rotational movement by sliding friction means, and a manually operated means which is capable of overcoming the friction forces of said sliding friction means restraining said coupling means and thus directing the exercise of control.
Claim 2
Dependent Claim
106 words
In a device for exercising control over a further member, which further member may be remotely located from said device, wherein said device includes an external power supply for exercising said control, the combination of a linear stepping motor and a remotely adjustable pulser for directing the exercise of said control, a coupling means between said linear stepping motor and said external power supply which is laterally movable and retained from rotational movement by sliding friction means, and a manually operated means which is capable of overcoming the friction forces of said sliding friction means restraining said coupling means and thus directing the exercise of control.
Claim 3
Dependent Claim
17 words
The device of claim 1 wherein said coupling means includes a threaded shaft threaded throughout its length.
Claim 4
Dependent Claim
19 words
The device of claim 2 wherein said threaded shaft is threadedly connected to a single rotatable complementary threaded member.
Claim 5
Dependent Claim
19 words
The device of claim 3 wherein said complementary threaded member is positioned inside the armature of an electric motor.
Claim 6
Dependent Claim
18 words
The device of claim 2 wherein said threaded shaft is restrained from rotational movement by a friction arm.
Claim 7
Dependent Claim
13 words
The device of claim 5 wherein said friction arm slides on a rod.
Claim 8
Dependent Claim
17 words
The device of claim 1 wherein said device for controlling a further member includes a pressure regulator.
Claim 9
Dependent Claim
18 words
The device of claim 7 wherein said pressure regulator is actuated by axial movement of a threaded shaft.
Claim 10
Dependent Claim
28 words
The device of claim 4 wherein said device for controlling a further member includes a pressure regulator and said threaded shaft moves axially to actuate said pressure regulator.
Claim 11
Dependent Claim
35 words
The device of claim 1 wherein said linear stepping motor and said remotely adjustable pulsar for directing the exercise of said control only directs the exercise of said control in adjustable groups of incremental steps.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |