US3572484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanism comprising motor and brakes responsive to counter means
Assignee: Eaton Corp
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Filing: 1968-11-14
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Granted: 1971-03-30
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Expires: 1988-11-14
Abstract
Abstract A control mechanism for material carrying vehicles which includes track means for controlling the direction of travel of the vehicle, a roller rotatably secured to the vehicle to form a no-slip contact with the track and be rotated thereon when the vehicle moves along the track, drive means for propelling the vehicle, a counter driven by the roller for counting the roller revolutions, vehicle brakes for braking the movement of the vehicle, and activation circuit means electrically connected to the counter and to the brakes for setting the brakes when the roller has rotated a predetermined number of revolutions.
Inventors
- 👤 Kenneth A Richins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:00
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/18; G05D3/183; B; B61; B61L; B61L23/00; B61L23/002; B61L23/005; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/0407; B65G1/0421
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
199 words
A control mechanism for a wheeled material carrying vehicle having an elevator platform; which comprises track means mounted on a fixed support for controlling the direction of movement of said vehicle; first roller means rotatably mounted to said vehicle to coact with said track means and be rotated therealong as said vehicle moves along said track; drive means attached to said vehicle for propelling said vehicle along said track; first counter means driven with said first roller means for counting the revolutions of said roller means when said vehicle is moved along said track; means for moving said elevator platform along a vertical path relative to said vehicle; second roller means guiding said platform in said vertical path; second counter means associated with said second roller means for counting the revolutions of said second roller means when said platform is moved up and down; vehicle brake means for braking the movement of said vehicle; platform brake means for braking the movement of said platform; and activation circuit means electrically connected to said first and second counter means and both said brake means for setting said brake means when said counter means have counted a predetermined number of roller revolutions.
Claim 2
Dependent Claim
199 words
A control mechanism for a wheeled material carrying vehicle having an elevator platform; which comprises track means mounted on a fixed support for controlling the direction of movement of said vehicle; first roller means rotatably mounted to said vehicle to coact with said track means and be rotated therealong as said vehicle moves along said track; drive means attached to said vehicle for propelling said vehicle along said track; first counter means driven with said first roller means for counting the revolutions of said roller means when said vehicle is moved along said track; means for moving said elevator platform along a vertical path relative to said vehicle; second roller means guiding said platform in said vertical path; second counter means associated with said second roller means for counting the revolutions of said second roller means when said platform is moved up and down; vehicle brake means for braking the movement of said vehicle; platform brake means for braking the movement of said platform; and activation circuit means electrically connected to said first and second counter means and both said brake means for setting said brake means when said counter means have counted a predetermined number of roller revolutions.
Claim 3
Dependent Claim
30 words
The control mechanism of claim 1 wherein a longitudinally extending rack is attached to said track means and said first roller means is a sprocket which coacts with said rack.
Claim 4
Dependent Claim
16 words
The control mechanism of claim 2 wherein said track means is mounted on a warehouse floor.
Claim 5
Dependent Claim
39 words
The control mechanism of claim 3 wherein each counter means comprises a rotary transducer, driven by the respective roller means, each transducer being electrically connected to an electronic counter which counts the voltage pulses produced by said rotary transducer.
Claim 6
Dependent Claim
42 words
The control mechanism of claim 4 wherein said activation circuit means comprises digital computer means for programming said electronic counters to activate said brake means when a predetermined number of voltage pulses have been transmitted to said counters by said rotary transducer.
Claim 7
Dependent Claim
36 words
The control mechanism of claim 5 wherein circuit means are electrically connected to said electronic counter and said vehicle drive means for deactivating said drive means and elevator moving means when said brake means are set.
Claim 8
Dependent Claim
26 words
The control mechanism of claim 6 wherein said vehicle drive means are reversible for driving said vehicle in forward and reverse directions along said track means.
Claim 9
Dependent Claim
24 words
The control mechanism of claim 7 wherein the operation of said drive means and elevator moving means is controlled by said digital computer means.
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |