Patent JPH02149157A successfully refreshed from Google Patents.
US3673966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric guideway transportation system
Assignee: Massachusetts Institute of Technology
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Filing: 1969-11-24
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Granted: 1972-07-04
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Expires: 1989-11-24
Abstract
Abstract A palletized automated transport vehicle is propelled and controlled along a guideway by means of a vertical rotary synchronous motor in combination with a vertical cog drive. The motor is fixed to the vehicle; the cog drive is supported by the guideway. The combination allows the vehicle to be driven at a constant or variable speed, and to be controlled with respect to headway or position, and therefore, with respect to other vehicles along the guideway.
Inventors
- 👤 David G Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:38
CPC Classifications
B; B62; B62D; B62D1/00; B62D1/24; B62D1/26; B62D1/265; B60; B60L; B60L5/00; B60L5/36; B60M; B60M7/00; B61; B61B; B61B13/00; B61B13/02; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
126 words
A transport system comprising a guideway and a load carrying pallet; said pallet having a plurality of wheels; said guideway comprising a roadbed having a longitudinally extending vertically rising guide wall and a gear rack carried by said guide wall to be engaged by a pinion for driving said pallet; electrical power rails carried by said guide wall; said pallet having a rotary synchronous motor and said motor having a drive pinion to engage said gear rack; electrical pickup means comprising a pickup arm having electrical pickup brushes carried by said pallet to engage said power rails; a first roller means carried by said pallet and engaging said guide wall at one side thereof for lateral guidance and positioning of said pinion with said gear rack.
Claim 2
Dependent Claim
126 words
A transport system comprising a guideway and a load carrying pallet; said pallet having a plurality of wheels; said guideway comprising a roadbed having a longitudinally extending vertically rising guide wall and a gear rack carried by said guide wall to be engaged by a pinion for driving said pallet; electrical power rails carried by said guide wall; said pallet having a rotary synchronous motor and said motor having a drive pinion to engage said gear rack; electrical pickup means comprising a pickup arm having electrical pickup brushes carried by said pallet to engage said power rails; a first roller means carried by said pallet and engaging said guide wall at one side thereof for lateral guidance and positioning of said pinion with said gear rack.
Claim 3
Dependent Claim
37 words
A transport system as set forth in claim 1, including a second roller means carried by said pickup arm and engaging said guide wall at the opposite side thereof for guiding the movement of said pickup arm.
Claim 4
Dependent Claim
30 words
A transport system as set forth in claim 2, said pickup arm being pivotally mounted to said pallet so as to be swung to disengage said brushes from said rails.
Claim 5
Dependent Claim
30 words
A transport system as set forth in claim 2, including a third roller means carried by said pallet for vertical support thereof on a top edge of said guide wall.
Claim 6
Dependent Claim
78 words
A transport system as set forth in claim 4, said guide wall being at one side of said roadbed; and all said roller means being at one side of said pallet; and another guide wall at the opposite side of said roadbed and an additional first, second and third roller means at the opposite side of said pallet, coacting with said latter guide wall in the manner described for said first mentioned first, second and third roller means.
Claim 7
Dependent Claim
26 words
A transport system as set forth in claim 4, including elongated resilient pads incorporated in said roadbed for support surfaces for the wheels of said pallet.
References Cited (Backward Citations)
No citation records indexed.
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 |