CA2255247C - Dispositif d'elevation a contrepoids pour barriere de passage a niveau - Google Patents

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

Info

Publication number: CA2255247C
Authority: CA; Canada
Prior art keywords: motor; contacts; relay; gate; power
Prior art date: 1997-12-19
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.): Expired - Fee Related

Application number

CA 2255247

Other languages

English (en)

Other versions

CA2255247A1 (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.)

1997-12-19

Filing date

1998-12-03

Publication date

2004-06-22

1997-12-19 Priority claimed from US08/994,386 external-priority patent/US5852350A/en

1998-12-03 Application filed by Safetran Systems Corp filed Critical Safetran Systems Corp

1999-06-19 Publication of CA2255247A1 publication Critical patent/CA2255247A1/fr

2004-06-22 Application granted granted Critical

2004-06-22 Publication of CA2255247C publication Critical patent/CA2255247C/fr

2018-12-03 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

230000007246 mechanism Effects 0.000 title description 15
238000012423 maintenance Methods 0.000 claims abstract description 35
230000005484 gravity Effects 0.000 description 2
230000004075 alteration Effects 0.000 description 1
238000009434 installation Methods 0.000 description 1
239000000203 mixture Substances 0.000 description 1
230000004048 modification Effects 0.000 description 1
238000012986 modification Methods 0.000 description 1
NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
230000008439 repair process Effects 0.000 description 1
238000006467 substitution reaction Methods 0.000 description 1

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 CA2255247A1 (fr)	1999-06-19
CA2255247C true 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

1998
- 1998-12-03 CA CA 2255247 patent/CA2255247C/fr not_active Expired - Fee Related
- 1998-12-18 AU AU97222/98A patent/AU745016B2/en not_active Ceased

Also Published As

Publication number	Publication date
AU9722298A (en)	1999-07-08
AU745016B2 (en)	2002-03-07
CA2255247A1 (fr)	1999-06-19

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Legal Events

Date	Code	Title	Description
2003-02-21	EEER	Examination request
2011-12-05	MKLA	Lapsed