US3586127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stack-climbing systems
Assignee: Individual
•
Filing: 1969-01-31
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Granted: 1971-06-22
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Expires: 1989-01-31
Abstract
Abstract A stack-climbing system in which a pair of electrically propelled, pneumatically tired load-carrying vehicles is adapted to be held in diametrical opposition upon the circumference of a stack under the influence of tension maintained by steel cables encompassing the stack, extending between the diametrically opposite vehicles to a pair of idler bogies also in diametrical opposition and spaced from the vehicles so that the cables are at all times spaced from the stack.
Inventors
- 👤 Robert H Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:43
CPC Classifications
E; E04; E04G; E04G3/00; E04G3/28; E04G3/30; E04G3/32
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
143 words
A stack-climbing system including two separate load-carrying vehicles, pneumatically tired wheels arranged at one side of each vehicle, two separate idler bogies, a wheel at one side of each bogie, cables attached to the idler bogies, tensioning means on the vehicles for tensioning the cables when the vehicles and bogies are disposed around a stack with the vehicles diametrically opposed and the bogies diametrically opposed and the wheels of the vehicles and bogies being in contact with the surface of the stack for travel upwardly and downwardly on said surface, two electric motors on each vehicle, means operably connecting one motor to the wheels of the vehicle for driving the wheels and means operably connecting the other motor with the tensioning means for driving the tensioning means to maintain the wheels of the vehicles and idler bogies in engagement with the stack surface.
Claim 2
Dependent Claim
143 words
A stack-climbing system including two separate load-carrying vehicles, pneumatically tired wheels arranged at one side of each vehicle, two separate idler bogies, a wheel at one side of each bogie, cables attached to the idler bogies, tensioning means on the vehicles for tensioning the cables when the vehicles and bogies are disposed around a stack with the vehicles diametrically opposed and the bogies diametrically opposed and the wheels of the vehicles and bogies being in contact with the surface of the stack for travel upwardly and downwardly on said surface, two electric motors on each vehicle, means operably connecting one motor to the wheels of the vehicle for driving the wheels and means operably connecting the other motor with the tensioning means for driving the tensioning means to maintain the wheels of the vehicles and idler bogies in engagement with the stack surface.
Claim 3
Dependent Claim
32 words
A stack-climbing system as claimed in claim 1, in which the means operably connecting the electric motor to the wheels of the vehicle and the tensioning means respectively include worm reduction gears.
Claim 4
Dependent Claim
36 words
A stack-climbing system as claimed in claim 1, in which each vehicle includes a frame, a subframe hinged in said frame, and said subframe carrying the electric motor, and at least one pair of tired wheels.
Claim 5
Dependent Claim
53 words
A stack-climbing system as claimed in claim 3, including a subframe carrying the upper pair of tired wheels, spring means operably related to said subframe for urging said wheels toward the stack surface, electrical switch means controlling the motors for driving the tensioning means and said switch means being actuated by said subframe.
Claim 6
Dependent Claim
64 words
A stack-climbing system as claimed in claim 1 in which each vehicle is provided with a winch drum on which four cables are wound, guide rollers at the top of the vehicle over which two of the cables pass to the two idler bogies, and guide rollers at the bottom of the vehicle over which the other two cables pass to the idler bogies.
Claim 7
Dependent Claim
42 words
A stack-climbing system as claimed in claim 1 including an electrical supply, the electric motors of the two vehicles for driving the tensioning means being connected in parallel to the electrical supply through reversing contactors and being arranged to operate in unison.
Claim 8
Dependent Claim
44 words
A stack-climing system as claimed in claim 1 including an electrical supply, and the electric motor of the two vehicles driving the wheels of the vehicles being connected in parallel to the electrical supply through reversing contactors and being arranged to operate in unison.
Claim 9
Dependent Claim
92 words
A stack-climbing system as claimed in claim 7, in which each vehicle is provided with a float chamber, a float switch in the float chamber adapted to open when liquid is withdrawn from the chamber, a hydraulic duct connecting the two float chambers so that if one vehicle is at a greater height than the other vehicle, liquid flows out of its float chamber thus allowing the float switch to open and the float switches being connected to operate contactors in the motor circuits to bring the vehicles to the same level.
Claim 10
Dependent Claim
61 words
A stack-climbing system as claimed in claim 8, in which during ascent, the float switch of the vehicle controls an electric motor driving the wheels of the vehicle, but in descent, a relay changes over the connections of the float switches so that the float switch of a vehicle controls the electric motor for guiding the wheels of the other vehicle.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |