Patent US3702641A successfully refreshed from Google Patents.
US3702641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveying system
Assignee: Robert Bosch GmbH
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Filing: 1971-01-14
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Granted: 1972-11-14
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Expires: 1991-01-14
Abstract
Abstract A mobile load-carrying unit has ground-engaging wheels and a body which is supported upwardly spaced from the ground by these wheels. A self-propelled vehicle unit is also provided with wheels on which it can travel in a given path on the ground and is dimensioned to fit beneath the body of the load-carrying unit. Cooperative force-transmitting portions are provided on the two units and so act with one another as to exert downwardly directed pressure upon the vehicle unit when the latter is beneath the load-carrying unit and travels in its predetermined path, so that the conveying force exerted by the vehicle unit upon the loadcarrying unit in a sense propelling the latter is in part converted into a component of force acting on the vehicle unit in direction toward the ground to increase frictional engagement of the wheels of the vehicle unit with the same.
Inventors
- 👤 Gerhard Schnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:49
CPC Classifications
B; B60; B60D; B60D1/00; Y; Y10; Y10S; Y10S180/00; Y10S180/904
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
216 words
A conveying system, comprising at least one mobile loadcarrying unit having ground-engaging first wheels and a body supported by said first wheels upwardly spaced from the ground; at least one self-propelled vehicle unit provided with groundengaging second wheels and adapted to travel in a given path, said vehicle unit being dimensioned to fit beneath said body; and cooperative force-transmitting means provided on the respective units engageable with each other during movement of said units relative to each other in either direction along said path and operative, when engaged, for transmitting to said load-carrying unit a conveying force in response to travel of said vehicle unit in said path, and for concomitantly transmitting to said vehicle unit a component of force acting in direction towards the ground to thereby facilitate frictional engagement of said second wheels with the same without lifting any part of said load-carrying unit from the ground, said force-transmitting means comprising at least one first element provided on one of said units and having two surfaces whose respective general planes extend transversely of said path and are inclined towards the ground in mutually opposite directions of said path, and at least one second element provided on the other of said units and adapted for forcetransmitting engagement with one or the other of said surfaces.
Claim 2
Dependent Claim
216 words
A conveying system, comprising at least one mobile loadcarrying unit having ground-engaging first wheels and a body supported by said first wheels upwardly spaced from the ground; at least one self-propelled vehicle unit provided with groundengaging second wheels and adapted to travel in a given path, said vehicle unit being dimensioned to fit beneath said body; and cooperative force-transmitting means provided on the respective units engageable with each other during movement of said units relative to each other in either direction along said path and operative, when engaged, for transmitting to said load-carrying unit a conveying force in response to travel of said vehicle unit in said path, and for concomitantly transmitting to said vehicle unit a component of force acting in direction towards the ground to thereby facilitate frictional engagement of said second wheels with the same without lifting any part of said load-carrying unit from the ground, said force-transmitting means comprising at least one first element provided on one of said units and having two surfaces whose respective general planes extend transversely of said path and are inclined towards the ground in mutually opposite directions of said path, and at least one second element provided on the other of said units and adapted for forcetransmitting engagement with one or the other of said surfaces.
Claim 3
Dependent Claim
86 words
A conveying system as defined in claim 1, said force-transmitting means comprising an arm pivoted to one of said units for movement between an upper and a lower position and provided with said first element, said inclined surfaces thereof forming a wedge-shaped projection, and said second element comprising a pair of rollers for turning movement about axes transversely of said path and spaced from another in direction of said path so that said projection is receivable between said rollers with said arm in said upper position.
Claim 4
Dependent Claim
25 words
A conveying system as defined in claim 1, said body having an underside facing the ground, and said first element being mounted on said underside.
Claim 5
Dependent Claim
59 words
A conveying system as defined in claim 1, said body having an underside, and said second element being mounted on said underside projecting downwardly therefrom; and wherein said vehicle unit has an upper side and said first element is mounted in the region of said upper side with said surfaces facing said underside for engagement with said second element.
Claim 6
Dependent Claim
45 words
A conveying system as defined in claim 1, wherein said second element comprises an entraining roller and mounting means mounting said entraining roller for displacement between a withdrawn position and an extended position in only the latter of which it can engage the respective surfaces.
Claim 7
Dependent Claim
65 words
A conveying system as defined in claim 5, said mounting means comprising a toggle lever on said other unit carrying said entraining roller and displaceable between an erected position in which said roller assumes said extended position thereof, and a collapsed position in which said roller assumes said retracted position thereof, and actuating means for displacing said toggle lever between said erected and collapsed positions.
Claim 8
Dependent Claim
59 words
A conveying system as defined in claim 6, said toggle lever comprising a pair of sections and a pivot connecting said sections for relative pivotal displacement of the same; and wherein said actuating means comprises a turnably mounted crank disc, a rod eccentrically pivoted to said crank diSc, and spring means connected with said rod and with said pivot.
Claim 9
Dependent Claim
38 words
A conveying system as defined in claim 5, said other unit being said vehicle unit and having an upper side facing said body and beyond which said entraining roller projects upwardly at least when in said extended position.
Claim 10
Dependent Claim
38 words
A conveying system as defined in claim 5, said other unit being said load-carrying unit and said body having an underside facing the ground and beyond which said roller projects downwardly at least when in said extended position.
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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) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |