US4570543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveying equipment
Assignee: Tsubakimoto Chain Co
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Filing: 1983-06-28
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Granted: 1986-02-18
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Expires: 2003-06-28
Abstract
Abstract Conveying equipment provided with a conveying vehicle guided by a single overhead rail without the necessity of an auxiliary rail due to the wheel and vehicle body unit construction which enables stable running of the vehicle. The equipment of the invention employs only one rail, thereby being simple in construction and extremely convenient for a non-permanent installation or a conveying equipment whose route is frequently changed, and also made remote-controllable by photo signals in simple operation.
Inventors
- 👤 Takashi Ishikura
- 👤 Hisakazu Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:05
CPC Classifications
B; B61; B61C; B61C13/00; B61C13/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
184 words
A conveying apparatus comprising a single overhead rail and a conveying vehicle; said single overhead rail having a round periphery and having a substantially uniform cross-sectional configuration throughout its length, said cross-sectional configuration having a height in a vertical direction and a width in a horizontal direction, the width of the cross-sectional configuration being at a maximum at a mid-point of the height; said vehicle comprising two main wheels which contact the rail at its upper periphery and which are rotatable and spaced apart in a moving direction of the vehicle, a wheel shaft bearing member provided for each main wheel, pairs of subwheels are provided on each side of the rail and in contact with the rail at its maximum width, each pair having a rotatable subwheel on each side of a main wheel in the moving direction; an electric motor for driving at least one of the main wheels, an electrical circuit for controlling operation of said motor, batteries for providing a power source for said motor and means for supporting a hanging load rotatably connected to each wheel shaft bearing member.
Claim 2
Dependent Claim
184 words
A conveying apparatus comprising a single overhead rail and a conveying vehicle; said single overhead rail having a round periphery and having a substantially uniform cross-sectional configuration throughout its length, said cross-sectional configuration having a height in a vertical direction and a width in a horizontal direction, the width of the cross-sectional configuration being at a maximum at a mid-point of the height; said vehicle comprising two main wheels which contact the rail at its upper periphery and which are rotatable and spaced apart in a moving direction of the vehicle, a wheel shaft bearing member provided for each main wheel, pairs of subwheels are provided on each side of the rail and in contact with the rail at its maximum width, each pair having a rotatable subwheel on each side of a main wheel in the moving direction; an electric motor for driving at least one of the main wheels, an electrical circuit for controlling operation of said motor, batteries for providing a power source for said motor and means for supporting a hanging load rotatably connected to each wheel shaft bearing member.
Claim 3
Dependent Claim
41 words
A conveying apparatus as set forth in claim 1, wherein said electrical circuit is provided with a reed switch disposed at an upper portion of said conveying vehicle and magnets for actuating said reed switch are attached to said overhead rail.
Claim 4
Dependent Claim
23 words
A conveying apparatus as set forth in claim 2, wherein said magnets are attached to said overhead rail by use of other magnets.
Claim 5
Dependent Claim
15 words
A conveying apparatus as set forth in claim 1, wherein said batteries are rechargeable batteries.
Claim 6
Dependent Claim
44 words
A conveying apparatus as set forth in claim 4, wherein said rail is provided with a feeder, said conveying vehicle being provided with a collector contactable with said feeder, so that said rechargeable batteries are adapted to be charged through said feeder and collector.
Claim 7
Dependent Claim
78 words
A conveying apparatus as set forth in claim 1, and further including an optical remote control unit, a photo sensor which receives a photo signal generated by said remote control unit and photo-electrically converts said signal, and said electrical circuit for controlling operation of said motor is operatively connected to said converted signal from said photo sensor to process said converted signal, said photo sensor having its sensor eye positioned at a bottom side of said conveying vehicle.
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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) | 1989-02-17 | 1989-08-19 | 1990-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-17 | 1993-08-19 | 1994-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-17 | 1997-08-19 | 1998-02-18 | $7700.00 | Window Closed / Lapsed |