CA2022668A1 - Pipeline padding system - Google Patents
Pipeline padding systemInfo
- Publication number
- CA2022668A1 CA2022668A1 CA 2022668 CA2022668A CA2022668A1 CA 2022668 A1 CA2022668 A1 CA 2022668A1 CA 2022668 CA2022668 CA 2022668 CA 2022668 A CA2022668 A CA 2022668A CA 2022668 A1 CA2022668 A1 CA 2022668A1
- Authority
- CA
- Canada
- Prior art keywords
- chassis
- trench
- hopper
- fill
- backfilling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Loading Or Unloading Of Vehicles (AREA)
Abstract
Backfilling apparatus adapted to be moved along a trench by a tractor includes a chassis, a hitch attachable to the chassis on either side, hydraulic cylinder for varying the attitude of the chassis to the hitch, a hopper mounted on the chassis to receive backfilling material, a variable speed conveyor carrying backfilling material from the hopper to an elevated position, a shredder accepting material from the conveyor, an inclined vibrating screen receiving shredded material and discharging padding fill onto the pipe in the trench and oversize material onto the padding fill in the trench. A grizzly at the hopper mouth can be positioned to discharge large masses of fill on either side or the rear of the chassis.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US392,503 | 1989-08-11 | ||
US07/392,503 US4955756A (en) | 1988-05-31 | 1989-08-11 | Pipeline padding system |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2022668A1 true CA2022668A1 (en) | 1991-02-12 |
CA2022668C CA2022668C (en) | 1996-02-27 |
Family
ID=23550852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2022668 Expired - Lifetime CA2022668C (en) | 1989-08-11 | 1990-08-03 | Pipeline padding system |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2022668C (en) |
-
1990
- 1990-08-03 CA CA 2022668 patent/CA2022668C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2022668C (en) | 1996-02-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed | ||
MKEC | Expiry (correction) |
Effective date: 20121202 |