CA2255247A1 - Dispositif d'elevation a contrepoids pour barriere de passage a niveau - Google Patents

Dispositif d'elevation a contrepoids pour barriere de passage a niveau

Info

Publication number
CA2255247A1
CA2255247A1 CA 2255247 CA2255247A CA2255247A1 CA 2255247 A1 CA2255247 A1 CA 2255247A1 CA 2255247 CA2255247 CA 2255247 CA 2255247 A CA2255247 A CA 2255247A CA 2255247 A1 CA2255247 A1 CA 2255247A1
Authority
CA
Canada
Prior art keywords
motor
contacts
relay
gate
power
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 2255247
Other languages
English (en)
Other versions
CA2255247C (fr
Inventor
Donald L. Levoir
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.)
Siemens Industry Inc
Original Assignee
Safetran Systems Corp
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
Priority claimed from US08/994,386 external-priority patent/US5852350A/en
Application filed by Safetran Systems Corp filed Critical Safetran Systems Corp
Publication of CA2255247A1 publication Critical patent/CA2255247A1/fr
Application granted granted Critical
Publication of CA2255247C publication Critical patent/CA2255247C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Train Traffic Observation, Control, And Security (AREA)
CA 2255247 1997-12-19 1998-12-03 Dispositif d'elevation a contrepoids pour barriere de passage a niveau Expired - Fee Related CA2255247C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/994,386 US5852350A (en) 1997-09-08 1997-12-19 Railroad crossing gate control system including a separate maintenance relay
US08/994,386 1997-12-19

Publications (2)

Publication Number Publication Date
CA2255247A1 true CA2255247A1 (fr) 1999-06-19
CA2255247C CA2255247C (fr) 2004-06-22

Family

ID=25540614

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2255247 Expired - Fee Related CA2255247C (fr) 1997-12-19 1998-12-03 Dispositif d'elevation a contrepoids pour barriere de passage a niveau

Country Status (2)

Country Link
AU (1) AU745016B2 (fr)
CA (1) CA2255247C (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006392A (en) * 1975-09-02 1977-02-01 Catlett John C Electronic sliding door
US4090685A (en) * 1977-02-22 1978-05-23 Westinghouse Air Brake Company Grade crossing assembly
US5502367A (en) * 1994-08-19 1996-03-26 Union Switch & Signal Inc. Highway crossing control

Also Published As

Publication number Publication date
AU9722298A (en) 1999-07-08
AU745016B2 (en) 2002-03-07
CA2255247C (fr) 2004-06-22

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed