Patent US3756376A successfully refreshed from Google Patents.
US3756376A
Expired / Lapsed
US
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Gravity-type roller conveyor with roller driving and roller brake devices
Assignee: STOEHR FOERDERANLAGEN SALZER
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Filing: 1970-08-05
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Granted: 1973-09-04
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Expires: 1990-08-05
Abstract
Abstract A gravity-type roller conveyor includes at least a section thereof in which the rollers are driven by driving members or drivers carried on an endless conveyor belt. The drivers which contact the individual rollers are dimensioned so that their longitudinal width of their outer ends which engage the rollers is less than the spacing between the center lines of the rollers. The conveyor also advantageously includes a braking mechanism in the form of a distance plate or engagement member which is shifted into engagement with a plurality of adjacent rollers along the length of the roller conveyor under the control of an electrical actuating circuit which is energized by a control roller which is located ahead of and/or after the braking device.
Inventors
- 👤 K Kurger
- 👤 N Axmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:35
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/22; B65G47/26; B65G47/261
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
118 words
A gravity-type roller conveyor comprising rotatable rollers over which articles are to be moved, support means for said rollers for rotatably supporting said rollers at spaced locations along a defined trackway, a drive belt movable adjacent the bottom side of said rollers, a flexible driver on said drive belt movable with said belt and engageable with said rollers thereby to rotate them, said driver being dimensioned to extend above said belt beyond the bottoms of at least some of said rollers in order to drivingly engage said rollers and having an outer roller engagement surface which is shorter in the driving direction than the spacing between adjacent rollers, said drivers being shaped in the form of a vane.
Claim 2
Dependent Claim
118 words
A gravity-type roller conveyor comprising rotatable rollers over which articles are to be moved, support means for said rollers for rotatably supporting said rollers at spaced locations along a defined trackway, a drive belt movable adjacent the bottom side of said rollers, a flexible driver on said drive belt movable with said belt and engageable with said rollers thereby to rotate them, said driver being dimensioned to extend above said belt beyond the bottoms of at least some of said rollers in order to drivingly engage said rollers and having an outer roller engagement surface which is shorter in the driving direction than the spacing between adjacent rollers, said drivers being shaped in the form of a vane.
Claim 3
Dependent Claim
113 words
A gravity-type roller conveyor comprising rotatable rollers over which articles are to be moved, support means for said rollers for rotatably supporting said rollers at spaced locations along a defined trackway, a drive belt movable adjacent the bottom side of said rollers, a flexible driver on said drive belt movable with said belt and engageable with said rollers thereby to rotate them, said driver including vertically elongated bendable portions being dimensioned to extend above said belt beyond the bottoms of at least some of said rollers in order to drivingly engage said rollers and having an outer roller engagement surface which is shorter in the driving direction than the spacing between adjacent rollers.
Claim 4
Dependent Claim
113 words
A gravity-type roller conveyor comprising rotatable rollers over which articles are to be moved, support means for said rollers for rotatably supporting said rollers at spaced locations along a defined trackway, a drive belt movable adjacent the bottom side of said rollers, a flexible driver on said drive belt movable with said belt and engageable with said rollers thereby to rotate them, said driver including vertically elongated bendable portions being dimensioned to extend above said belt beyond the bottoms of at least some of said rollers in order to drivingly engage said rollers and having an outer roller engagement surface which is shorter in the driving direction than the spacing between adjacent rollers.
Claim 5
Dependent Claim
29 words
A gravity-type roller conveyor, according to claim 2, wherein said driver includes a vane-like element having a cross section which decreases toward the direction of movement of said belt.
Claim 6
Dependent Claim
13 words
A gravity-type roller conveyor, according to claim 2, wherein said driver is loop-shaped.
Claim 7
Dependent Claim
28 words
A gravity-type roller conveyor, according to claim 2, including a drive belt support arranged beneath said drive belt for supporting said belt during its movement below said rollers.
Claim 8
Dependent Claim
17 words
A gravity-type roller conveyor, according to claim 5, including means for adjustably positioning said drive belt support.
Claim 9
Dependent Claim
22 words
A gravity-type roller conveyor, according to claim 5, wherein said support comprises a plurality of rollers spaced longitudinally beneath said drive belt.
Claim 10
Dependent Claim
29 words
A gravity-type roller conveyor, according to claim 2, including a plurality of drivers arranged along the length of said belt, and means for securing said drivers on said belt.
Claim 11
Dependent Claim
19 words
A gravity-type roller conveyor, according to claim 8, wherein said drivers are arranged at equal intervals along said belt.
Claim 12
Dependent Claim
22 words
A gravity-type roller conveyor, according to claim 8, wherein said drivers are arranged at unequal intervals along the length of said belt.
Claim 13
Dependent Claim
23 words
A gravity-type roller conveyor, according to claim 8, wherein said drivers are arranged in separated groups along the length of said drive belt.
Claim 14
Dependent Claim
25 words
A gravity-type roller conveyor, according to claim 8, wherein said drivers are arranged at s spacing which is different from the spacing of said rollers.
Claim 15
Dependent Claim
41 words
A gravity-type roller conveyor, according to claim 8, wherein there are a plurality of drivers arranged in separated groups, said groups being composed of a number of drivers which is different from the number of rollers arranged in a comparable spacing.
Claim 16
Dependent Claim
22 words
A gravity-type roller conveyor, according to claim 8, including at least two drive belts arranged beneath said rotatable rollers and arranged side-by-side.
Claim 17
Dependent Claim
27 words
A gravity-type roller conveyor, according to claim 2, wherein said trackway comprises a curved trackway said drive belt being arranged on a chord of said curved trackway.
Claim 18
Dependent Claim
18 words
A gravity-type roller conveyor, according to claim 15, wherein said rollers of said roller tRack curve are conical.
Claim 19
Dependent Claim
52 words
A gravity-type roller conveyor, according to claim 2, including braking means associated with said rollers comprising a distance plate supported below said rollers, and control means for shifting said distance plate into engagement with said rollers to stop the rotation thereof in accordance with the position of the goods on said trackway.
Claim 20
Dependent Claim
51 words
A gravity-type roller conveyor, according to claim 17, wherein said control means includes a roller of said rotatable rollers which project above all of the other rollers and including means for mounting said projecting roller to permit downward movement thereof by the article passing thereover to shift said braking distance member.
Claim 21
Dependent Claim
50 words
A gravity-type roller conveyor, according to claim 18, wherein said control means includes a plurality of control rollers arranged along said trackway which projects outwardly from the other of said rollers and which are engageable by the article moving thereover to provide a control actuation of said braking distance member.
Claim 22
Dependent Claim
42 words
A gravity-type roller conveyor, according to claim 19, wherein at least two of said control rollers are provided for the controlling the movement of said distance plate one arranged on one side thereof and the other arranged on the opposite side thereof.
Claim 23
Dependent Claim
30 words
A gravity-type roller conveyor, according to claim 20, wherein said control means also includes electrical circuit means connected to each of said rollers for selectively shifting said distance plate member.
Claim 24
Dependent Claim
29 words
A gravity-type roller conveyor, according to claim 21, including switching delay means arranged in said electrical circuit for delaying the operation of said movement of said distance plate member.
Claim 25
Dependent Claim
31 words
A gravity-type roller conveyor, according to claim 17, wherein said braking distance plate has at least the length of the longest piece of goods to be transported on the roller conveyor.
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |