CA2122315A1 - Locking System for a Semitrailer Sliding Undercarriage - Google Patents
Locking System for a Semitrailer Sliding UndercarriageInfo
- Publication number
- CA2122315A1 CA2122315A1 CA 2122315 CA2122315A CA2122315A1 CA 2122315 A1 CA2122315 A1 CA 2122315A1 CA 2122315 CA2122315 CA 2122315 CA 2122315 A CA2122315 A CA 2122315A CA 2122315 A1 CA2122315 A1 CA 2122315A1
- Authority
- CA
- Canada
- Prior art keywords
- air
- semitrailer
- locking
- locking pins
- parallel rails
- 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
Abstract
A pneumatic locking system mounted on a sliding undercarriage of a semitrailer, the semitrailer pulled by a tractor. The locking system is used for securing and releasing a sliding undercarriage from a pair of parallel rails mounted on an underside of the semitrailer, the parallel rails having spaced apart locking pin holes along their length. The locking system includes one pair or two pair of air cylinders with pistons. The air cylinders are mounted on the sliding undercarriage and disposed next to the parallel rails. Locking pins are attached to each piston with a portion of the locking pins inserted into selected locking pins holes in the parallel rails when in a locked position. A 4-way air valve is connected to the air cylinders and a pressurized air source on the semitrailer. The air valve directs pressurized air to the air cylinders for retracting and extending the pistons in the cylinder. An air pressure switch is connected to a pressurized air line to the semitrailer air brakes. The air pressure switch is connect to and controls the operation of the air valve when retracting and unlocking the locking pins from the locking pin holes. The air pressure switch allows pin retraction only when air pressure is released to the semitrailer air brakes and spring brakes on the semitrailer are set. A pin release lever or pinrelease button is attached to the air valve and is used for releasing the locking pins when the spring brakes have been set.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15134993A | 1993-11-12 | 1993-11-12 | |
US08/151,349 | 1993-11-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2122315A1 true CA2122315A1 (en) | 1995-05-13 |
CA2122315C CA2122315C (en) | 1999-10-19 |
Family
ID=22538362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2122315 Expired - Fee Related CA2122315C (en) | 1993-11-12 | 1994-04-27 | Locking system for a semitrailer sliding undercarriage |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2122315C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108189909A (en) * | 2016-12-08 | 2018-06-22 | 辽宁丹东新弘源农业科技发展有限公司企业技术研究开发中心 | A kind of gas-operated lock solution device |
-
1994
- 1994-04-27 CA CA 2122315 patent/CA2122315C/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108189909A (en) * | 2016-12-08 | 2018-06-22 | 辽宁丹东新弘源农业科技发展有限公司企业技术研究开发中心 | A kind of gas-operated lock solution device |
CN108189909B (en) * | 2016-12-08 | 2023-12-22 | 辽宁丹东新弘源农业科技发展有限公司企业技术研究开发中心 | Pneumatic unlocking device |
Also Published As
Publication number | Publication date |
---|---|
CA2122315C (en) | 1999-10-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |