Patent US4988154A successfully refreshed from Google Patents.
Patent US3601730A successfully refreshed from Google Patents.
US3601730A
Expired / Lapsed
US
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Magnetic-detenting control
Assignee: Individual
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Filing: 1970-03-03
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Granted: 1971-08-24
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Expires: 1990-03-03
Abstract
Abstract Magnetic-detenting control for resistance strip, switches, valves or other devices in which it is required that the control be in increments and that there be a pause at each increment. The positions of the control are indexed by a series of magnets mounted on a base and alternately arranged in opposite polarity. A manually operable slider is guided for movement along the magnets and forms a support for a detenting magnet. The detenting magnet is arranged with its magnetic field flowing in the direction of movement of the slider. As the detenting magnet is moved along the series of stationary magnets, a dwell occurs as opposite poles come into registry with each other. The points at which the detent actions or swells take place can thus be relatively closely spaced and calibrated. The position of the slider can readily be determined visually, and the detent actions can be determined by feel.
Inventors
- 👤 Jack C Cookerly
- 👤 George Robert Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:15
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/02; H01F7/0231; H01F7/0252; H01H; H01H3/00; H01H3/32; H01H3/50; H01H2003/506
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
104 words
A magnetic-detenting control comprising in combination, a. a base, b. a series of permanent magnets spaced along said base arranged to provide a series of alternately arranged poles of opposite polarity, c. a detenting magnet mounted for movement along said series of magnets and adapted to have connection with a device to be controlled, the magnetic field of said detenting magnet running in the direction of travel of said magnet along said series of magnets, whereby the opposed fields of said series of magnets will alternately retard movement of said detenting magnet along said series of magnets and provide a series of detenting stops.
Claim 2
Dependent Claim
104 words
A magnetic-detenting control comprising in combination, a. a base, b. a series of permanent magnets spaced along said base arranged to provide a series of alternately arranged poles of opposite polarity, c. a detenting magnet mounted for movement along said series of magnets and adapted to have connection with a device to be controlled, the magnetic field of said detenting magnet running in the direction of travel of said magnet along said series of magnets, whereby the opposed fields of said series of magnets will alternately retard movement of said detenting magnet along said series of magnets and provide a series of detenting stops.
Claim 3
Dependent Claim
35 words
The magnetic-detenting control of claim 1, wherein said series of magnets and said detenting magnet are made from thermoplastic materials impregnated with barium ferrite, and are all magnetized along the short axes of the materials.
Claim 4
Dependent Claim
48 words
The magnetic-detenting control of claim 2, wherein the series of magnets are arranged along said base in a straight line and the poles thereof face said detenting magnet including, a. means for mounting said detenting magnet for movement along said series of magnets, in a relatively friction-free path.
Claim 5
Dependent Claim
63 words
The magnetic-detenting control of claim 1, wherein the series of magnets are arranged in a straight line and including, a. a slide bar mounted on said base and extending along said series of magnets, b. a slider mounted on said slide bar for movement therealong, and c. means mounting said detenting magnet on said slide bar for movement along said series of magnets.
Claim 6
Dependent Claim
66 words
A magnetic-detenting control in accordance with claim 1, including, a. upright brackets at opposite ends of said base, b. a slide bar extending between said brackets and mounted thereon, c. a slider slidably mounted on said slide bar for movement therealong and forming a movable support for said detenting magnet and positioning said detenting magnet in close proximity to said series of magnets for movement therealong.
Claim 7
Dependent Claim
35 words
The magnetic-detenting control of claim 5, wherein said series of magnets are made from a single strip of thermoplastic material impregnated with barium ferrite, and oppositely magnetized in increments throughout the length of said strip.
Claim 8
Dependent Claim
35 words
The magnetic-detenting control of claim 5, including, a. a resistor extending along one side of said base, and b. a contact arm on said slider having contact with said resistor to vary the resistance thereof.
Claim 9
Dependent Claim
60 words
The magnetic-detenting control of claim 2, including, a. upright brackets at opposite ends of said base, b. a slide mounted between said brackets, c. a slider slidably mounted on said slide for movement therealong and along said series of magnets, and d. means mounting said detenting magnet on said slide to depend therefrom in juxtaposition to said series of magnets.
Claim 10
Dependent Claim
72 words
The magnetic-detenting control of claim 1, including, a. means arranging the series of magnets in the form of an annulus, b. means mounting said movable magnet for movement along said series of magnets in juxtaposition thereto, whereby the alternately arranged magnetic fields of said series of magnets in cooperation with the magnetic field of said detenting magnet will effect detenting dwells in travel of said detenting magnet along said series of magnets.
Claim 11
Dependent Claim
58 words
The magnetic-detenting control of claim 9, wherein the means mounting said movable magnet for movement along said series of magnets comprises, an arm pivoted for movement about the center of said annulus and extending radially therefrom, and a supporting connection between said arm and said detenting magnet positioning said detenting magnet in juxtaposition to said series of magnets.
References Cited (Backward Citations)
US3317870A
Cited
US3412362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |