CA2122315A1 - Locking System for a Semitrailer Sliding Undercarriage - Google Patents

Locking System for a Semitrailer Sliding Undercarriage

Info

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
Application number
CA 2122315
Other languages
French (fr)
Other versions
CA2122315C (en
Inventor
Larry L. Wessels
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2122315A1 publication Critical patent/CA2122315A1/en
Application granted granted Critical
Publication of CA2122315C publication Critical patent/CA2122315C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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.
CA 2122315 1993-11-12 1994-04-27 Locking system for a semitrailer sliding undercarriage Expired - Fee Related CA2122315C (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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