Patent US3747742A successfully refreshed from Google Patents.
US3747742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulk conveyor
Assignee: Mayfran International Inc
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Filing: 1971-08-06
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Granted: 1973-07-24
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Expires: 1991-08-06
Abstract
Abstract An improved push bar bulk conveyor of the type comprising a conveyor trough in which a conveyor rod equipped with unilaterally acting material drivers can be longitudinally reciprocated by a cylinder and piston rod unit. In the subject invention, the cylinder and piston rod unit is mounted to extend in a slightly inclined position in a substantially vertical plane in order to reduce the inoperative length of the conveyor. The raised end of the cylinder and piston rod unit is affixed to a generally semicylindrical conveyor end wall at the material input or feed point in order to guide that material drawn toward the rear of the conveyor during the return stroke of the cylinder and piston rod unit forward into the operative area of the drivers.
Inventors
- 👤 K Wissmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:22
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/0042; B23Q11/0057; B65; B65G; B65G25/00; B65G25/04; B65G25/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
191 words
A bulk conveyor including an elongated conveyor trough, an elongated substantially straight and rigid conveyor rod reciprocatingly positioned in said trough for longitudinal reciprocating movement relative to said trough in a substantially straight line, said rod having unilaterally acting drivers thereon for conveying bulk material along said trough in one direction of movement of said rod, a cylinder and piston rod unit connected with said conveyor rod and with said conveyor trough for moving said conveyor rod in a feed stroke forwardly relative to said conveyor trouGh in said one direction to feed bulk material along said trough and in an opposite direction to reposition said conveyor rod for another feed stroke, the improvement comprising; said cylinder and piston rod unit being inclined relative to said conveyor trough and conveyor rod, said cylinder and piston rod unit having one end portion thereof pivotally connected with said conveyor rod at a first connection and having an opposite end portion thereof pivotally connected with said conveyor trough at a second connection above said conveyor rod and said first connection, said first and second connections being within the longitudinal confines of said conveyor trough.
Claim 2
Dependent Claim
191 words
A bulk conveyor including an elongated conveyor trough, an elongated substantially straight and rigid conveyor rod reciprocatingly positioned in said trough for longitudinal reciprocating movement relative to said trough in a substantially straight line, said rod having unilaterally acting drivers thereon for conveying bulk material along said trough in one direction of movement of said rod, a cylinder and piston rod unit connected with said conveyor rod and with said conveyor trough for moving said conveyor rod in a feed stroke forwardly relative to said conveyor trouGh in said one direction to feed bulk material along said trough and in an opposite direction to reposition said conveyor rod for another feed stroke, the improvement comprising; said cylinder and piston rod unit being inclined relative to said conveyor trough and conveyor rod, said cylinder and piston rod unit having one end portion thereof pivotally connected with said conveyor rod at a first connection and having an opposite end portion thereof pivotally connected with said conveyor trough at a second connection above said conveyor rod and said first connection, said first and second connections being within the longitudinal confines of said conveyor trough.
Claim 3
Dependent Claim
86 words
The device of claim 1 wherein said conveyor trough includes a rear end wall, said rear end wall being upwardly reversely curved, said conveyor rod having a rear end, whereby material carried toward said rear end wall by said rear end of said conveyor rod during movement thereof in said opposite direction is deflected upwardly and forwardly by said rear end wall to fall back in said conveyor trough forwardly of said rear end of said conveyor rod in the rearmost position of said conveyor rod.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |