CA2314193A1 - Locking drive nut for screw drive systems - Google Patents

Locking drive nut for screw drive systems Download PDF

Info

Publication number
CA2314193A1
CA2314193A1 CA002314193A CA2314193A CA2314193A1 CA 2314193 A1 CA2314193 A1 CA 2314193A1 CA 002314193 A CA002314193 A CA 002314193A CA 2314193 A CA2314193 A CA 2314193A CA 2314193 A1 CA2314193 A1 CA 2314193A1
Authority
CA
Canada
Prior art keywords
drive
drive nut
machine
screw
nut
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
CA002314193A
Other languages
French (fr)
Other versions
CA2314193C (en
Inventor
Robert L. Oakley
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.)
Westinghouse Air Brake Co
Original Assignee
Westinghouse Air Brake Co
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 US09/407,245 external-priority patent/US6282970B1/en
Application filed by Westinghouse Air Brake Co filed Critical Westinghouse Air Brake Co
Publication of CA2314193A1 publication Critical patent/CA2314193A1/en
Application granted granted Critical
Publication of CA2314193C publication Critical patent/CA2314193C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Transmission Devices (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

A screw drive mechanism connectable to at least one of a first machine portion and a second machine portion for moving the second machine portion relative to the first machine portion from a first position to a second position. The mechanism has a base for attachment to one of the first and the second machine portions and a motor attached to the base. It includes a drive screw having a rotary motion connection to the motor to be rotated thereby and a drive nut having an internally threaded bore engaged with the drive screw to receive a drive force from the drive screw. A drive nut connection is engaged with the drive nut for conveying the drive force to one of the first and the second machine portions. An anti-rotation member is attached to the drive nut connection, the anti-rotation member engaging the drive nut to prevent rotation thereof. The mechanism also includes an activation member attached to the base, the activation member contacting a disengaging surface portion of the anti-rotation member when such one of the first and the second machine portions is moved to the second position to place the anti-rotation member in a position disengaged from the drive nut so that the drive nut may rotate. A drive nut rotating device is attached to the base, the drive nut rotating device rotating the drive nut to a locking position when such one of the first and the second machine portions is moved to the second position.
CA 2314193 1999-09-28 2000-07-21 Locking drive nut for screw drive systems Expired - Fee Related CA2314193C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US407,245 1999-09-28
US09/407,245 US6282970B1 (en) 1998-09-28 1999-09-28 Locking drive nut for screw drive systems

Publications (2)

Publication Number Publication Date
CA2314193A1 true CA2314193A1 (en) 2001-03-28
CA2314193C CA2314193C (en) 2004-09-21

Family

ID=23611241

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2314193 Expired - Fee Related CA2314193C (en) 1999-09-28 2000-07-21 Locking drive nut for screw drive systems

Country Status (1)

Country Link
CA (1) CA2314193C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105350854A (en) * 2015-11-25 2016-02-24 宁波南车时代传感技术有限公司 Passive locking device for door system of urban rail vehicle and public bus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105350854A (en) * 2015-11-25 2016-02-24 宁波南车时代传感技术有限公司 Passive locking device for door system of urban rail vehicle and public bus

Also Published As

Publication number Publication date
CA2314193C (en) 2004-09-21

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed