US3913728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wiping device for a conveyor belt
Assignee: Stahlgruber Otto Gruber GmbH and Co
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Filing: 1973-10-16
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Granted: 1975-10-21
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Expires: 1993-10-16
Abstract
Abstract An elongated wiper arm having a number of longitudinal ribs about its periphery is mounted on a crossbar with one of its ribs in contact with the conveyor. The crossbar is counterbalanced to bear against the conveyor, and the angular position of the crossbar and the wiper arm attached to it can be selectively varied to bring new ribs into contact with the conveyor as the operating rib wears down. The wiper is made of an elastomer such as rubber or polyurethane and it may be vulcanized or foamed directly on the crossbar.
Inventors
- 👤 Richard Pott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:07
CPC Classifications
B; B65; B65G; B65G45/00; B65G45/10; B65G45/12
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
218 words
A wiping device for a conveyor belt comprising an elongated wiping crossbar having a plurality of longitudinal peripheral ribs of wiping material, a movable mounting frame for disposition adjacent the conveyor belt, shaft and socket means mounting the wiping crossbar on the mounting frame with one of its ribs in contact with the conveyor belt, counter-balancing means reacting against the frame for causing the wiping crossbar to bear against the conveyor belt, the socket means comprising polygonal socket means in the mounting frame, the shaft means having a longitudinal axis and, polygonal end surface means fitting within the polygonal socket means and non-rotatably engaging within the polygonal socket means in a number of different angular positions of the shaft and wiping crossbar means abOut their longitudinal axis, the polygonal socket means having an open side whereby the polygonal shaft end surface means may be inserted therein and removed therefrom, and the ribs on the wiping crossbar being coordinated with the polygonal shaft end surface means, to permit the angular orientation of the wiping crossbar to be varied about its longitudinal axis and selectively fixed in a number of positions related to the ribs whereby different ribs of the crossbar can each be placed into contact with the conveyor belt for renewing the wiping surface after it becomes worn.
Claim 2
Dependent Claim
218 words
A wiping device for a conveyor belt comprising an elongated wiping crossbar having a plurality of longitudinal peripheral ribs of wiping material, a movable mounting frame for disposition adjacent the conveyor belt, shaft and socket means mounting the wiping crossbar on the mounting frame with one of its ribs in contact with the conveyor belt, counter-balancing means reacting against the frame for causing the wiping crossbar to bear against the conveyor belt, the socket means comprising polygonal socket means in the mounting frame, the shaft means having a longitudinal axis and, polygonal end surface means fitting within the polygonal socket means and non-rotatably engaging within the polygonal socket means in a number of different angular positions of the shaft and wiping crossbar means abOut their longitudinal axis, the polygonal socket means having an open side whereby the polygonal shaft end surface means may be inserted therein and removed therefrom, and the ribs on the wiping crossbar being coordinated with the polygonal shaft end surface means, to permit the angular orientation of the wiping crossbar to be varied about its longitudinal axis and selectively fixed in a number of positions related to the ribs whereby different ribs of the crossbar can each be placed into contact with the conveyor belt for renewing the wiping surface after it becomes worn.
Claim 3
Dependent Claim
15 words
A device as set forth in claim 1 wherein the wiping crossbar comprises an elastomer.
Claim 4
Dependent Claim
14 words
A device as set forth in claim 2 wherein the elastomer comprises soft rubber.
Claim 5
Dependent Claim
14 words
A device as set forth in claim 3 wherein the elastomer comprises a polyurethane.
Claim 6
Dependent Claim
14 words
A device as set forth in claim 4 wherein the polyurethane comprises a foam.
Claim 7
Dependent Claim
15 words
A device as set forth in claim 4 wherein the polyurethane comprises a cast polyurethane.
Claim 8
Dependent Claim
22 words
A device as set forth in claim 3 wherein the crossbar includes a shaft and the rubber is vulcanized upon the shaft.
Claim 9
Dependent Claim
22 words
A device as set forth in claim 1 wherein the wiping crossbar has a pair of ribs disposed 180* opposite each other.
Claim 10
Dependent Claim
17 words
A device as set forth in claim 1 wherein the ribs are arranged in a T shape.
Claim 11
Dependent Claim
17 words
A device as set forth in claim 1 wherein the ribs are arranged in a star shape.
Claim 12
Dependent Claim
17 words
A device as set forth in claim 1 wherein the ribs are arranged in a cross shape.
Claim 13
Dependent Claim
34 words
A device as set forth in claim 1 wherein a square shaft is axially disposed in the wiping crossbar, and the ribs on the crossbar being angularly aligned with the sides of the shaft.
Claim 14
Dependent Claim
42 words
A device as set forth in claim 1 wherein a shaft is axially disposed within the crossbar, the shaft having a polygonal cross-section having a number of flat surfaces, and the ribs on the crossbar being angularly aligned with the flat surfaces.
Claim 15
Dependent Claim
41 words
A device as set forth in claim 1 wherein a shaft is axially disposed within the crossbar, the shaft having a flattened oval cross-section with longer and shorter sides, and the ribs of the crossbar being angularly aligned with the sides.
Claim 16
Dependent Claim
28 words
A device as set forth in claim 1 wherein the shaft and socket means comprises a rectangular socket in the mounting frame and rectangular shafts on the crossbar.
Claim 17
Dependent Claim
33 words
A wiping device as set forth in claim 1 wherein the polygonal socket means has an open top surface, and the polygonal shaft end surface means is inserted through the open top surface.
Claim 18
Dependent Claim
19 words
A device as set forth in claim 1 wherein the counter-balancing means comprises a variable counter-weight and lever assembly.
Claim 19
Dependent Claim
52 words
A device as set forth in claim 1 wherein the wiping crossbar has a hub, and the hub being thicker than the ribs whereby wearing down of a rib is safely indicated by the reduction in wiping capacity resulting from the reduction in surface pressure when the hub bears on the belt.
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |