GB2288692A - Latch - Google Patents

Latch Download PDF

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Publication number
GB2288692A
GB2288692A GB9506483A GB9506483A GB2288692A GB 2288692 A GB2288692 A GB 2288692A GB 9506483 A GB9506483 A GB 9506483A GB 9506483 A GB9506483 A GB 9506483A GB 2288692 A GB2288692 A GB 2288692A
Authority
GB
United Kingdom
Prior art keywords
support
latching
pin
latch
contactor
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
GB9506483A
Other versions
GB9506483D0 (en
GB2288692B (en
Inventor
Philip James Quentin
Edgard Fred Lang
John F Winstead
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.)
General Electric Co
Original Assignee
General Electric 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 GB9407285A external-priority patent/GB9407285D0/en
Application filed by General Electric Co filed Critical General Electric Co
Priority to GB9506483A priority Critical patent/GB2288692B/en
Publication of GB9506483D0 publication Critical patent/GB9506483D0/en
Publication of GB2288692A publication Critical patent/GB2288692A/en
Application granted granted Critical
Publication of GB2288692B publication Critical patent/GB2288692B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/02—Details

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

A latching apparatus comprises a support 3 for supporting a device 1 such as a vacuum contactor and a latch 4, 5, 6 on the support 3 for fastening the support 3 to the device 1. The latch comprises a spring 4 attached at one end to the support 3 and having a handle 6 at its other end. An upstanding pin 5 on the spring 4 is engageable with a first hole 7 in the device 1 in a first position of the device 1 and with a second hole 8 in the device 1 in a second position of the device 1. The device 1 is guided during movement between the first and second positions by guide brackets 2. <IMAGE>

Description

LATCH The present invention relates to a latch and finds particular, but not exclusive, application to use with a vacuum contactor which is to be removed from its normal operative position with a contactor frame for servicing, for example.
The present invention provides an apparatus comprising a device means; a support means, upon which said device means rests; and a latching means, on said support means, for fastening said support means to said device means.
The apparatus may include a guide means on said support means for aligning the position of said device means and bracing said device means so that said device means may be offset from said support means while remaining braced by said support means.
Preferably, the latching means and device means are configured so that the device means is latchable in a non-offset position and an offset position relative to the support means. This provides, in the case of a vacuum contactor for example, a simple latching mechanism which can be used to hold the contactor in the drawn out position while the contactor is being serviced.
The latching means may have a first side attached to said support means and a flexible second side, comprising a pin means on the second side of said latching means; and an aperture means in said device means for fastening said device means with said support means by inserting said pin means through said aperture means.
Conveniently, such an apparatus has a handle means on the second side of said latching means, for displacing said latching means and thus said pin means.
An embodiment of the invention will now be described, by way of example only, with reference to the accompanying drawing in which Figure 1 is a side view of the embodiment.
A contactor frame 1 is slidably supported within a contactor support 3 so it can be moved from its normal operative position, which is as shown in Figure 1, to an offset position by moving the frame 1 forwards as indicated by the direction arrow in the figure.
Guide brackets 2, of which one is shown, aligns the frame 1 for movement between the offset and non-offset position and also braces the frame 1 in the offset position.
A latching mechanism is attached to the underside of the support 3, in the orientation of the figure. The latch comprises a piece of spring steel 4 attached at a first end or side to the support 3 and an upstanding pin 5 fixed towards the second end or side of the spring steel 4. A handle 6 in the form of a vertically extending plate 6A with a horizontally extending arm 6B projecting forwardly from the top of the plate 6A is also attached to the second end or side of the spring steel 4.
The pin 5 in the normal position of the latch engages with a first hole 7 in frame 1 so retaining the frame in its normal operating position (as shown in Figure 1). When the handle 6 is manually depressed the pin 5 is pulled from the hole 7 allowing the frame 1 to move to an offset position.
A second hole 8 in the contactor frame 6 is located in the frame 1 so as to be engageable with the pin 5 when in a selected offset position, at which point the spring force of the latch pushes the pin 5 up into the second hole 8, stopping the contactor frame 1 from coming out of the enclosure onto the floor. The latch can then be operated again if complete removal of the contactor frame 1 is desired or to move it back to the operating position.
A benefit of this embodiment is that one can take a stationary vacuum contactor (with the holes 7 and 8 already present) and without modification to that contactor further provide the above described two positions latching and bracing by modification to the contactor support 3.

Claims (7)

1. An apparatus comprising a) a device means; b) a support means, upon which said device means rests; and c) a latching means, on said support means, for fastening said support means to said device means.
2. The apparatus of Claim 1 comprising a guide means on said support means for aligning the position of said device means and bracing said device means so that said device means may be offset from said support means while remaining braced by said support means.
3. The apparatus of Claim 1 or 2, wherein said latching means has a first side attached to said support means and a flexible second side, comprising a) a pin means on the second side of said latching means; and b) an aperture means in said device means for fastening said device means with said support means by inserting said pin means though said aperture means.
4. The apparatus of Claim 3 comprising a handle means on the second side of said latching means, for displacing said latching means and thus said pin means.
5. The apparatus of any preceding claim wherein said device means is a vacuum contactor.
6. An apparatus as claimed in any preceding claim in which the latching means and device means are configured so that the device means is latchable in the non-offset position and an offset position relative the support means.
7. An apparatus substantially as hereinbefore described with reference to the accompanying drawings.
GB9506483A 1994-04-13 1995-03-30 Latch Expired - Fee Related GB2288692B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9506483A GB2288692B (en) 1994-04-13 1995-03-30 Latch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9407285A GB9407285D0 (en) 1994-04-13 1994-04-13 Drawout vacuum contactor
GB9506483A GB2288692B (en) 1994-04-13 1995-03-30 Latch

Publications (3)

Publication Number Publication Date
GB9506483D0 GB9506483D0 (en) 1995-05-17
GB2288692A true GB2288692A (en) 1995-10-25
GB2288692B GB2288692B (en) 1998-03-18

Family

ID=26304694

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9506483A Expired - Fee Related GB2288692B (en) 1994-04-13 1995-03-30 Latch

Country Status (1)

Country Link
GB (1) GB2288692B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB311793A (en) * 1928-01-17 1929-05-17 British Thomson Houston Co Ltd Improvements relating to electric switchgear
GB1352283A (en) * 1971-06-26 1974-05-08 Waldhof Aschaffenburg Papier Containers
US4036541A (en) * 1976-06-24 1977-07-19 Kantor Seymour M Locking arrangement for cabinets
US4253689A (en) * 1979-04-24 1981-03-03 Scott & Fetzer Company Spring latch mechanism
EP0157074A1 (en) * 1981-04-14 1985-10-09 Mitsubishi Denki Kabushiki Kaisha Drawer-type circuit breaker arrangement
US4703137A (en) * 1985-12-20 1987-10-27 Siemens Aktiengesellschaft Electric switchgear with a pull-out frame and a switching device that can be inserted therein

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB311793A (en) * 1928-01-17 1929-05-17 British Thomson Houston Co Ltd Improvements relating to electric switchgear
GB1352283A (en) * 1971-06-26 1974-05-08 Waldhof Aschaffenburg Papier Containers
US4036541A (en) * 1976-06-24 1977-07-19 Kantor Seymour M Locking arrangement for cabinets
US4253689A (en) * 1979-04-24 1981-03-03 Scott & Fetzer Company Spring latch mechanism
EP0157074A1 (en) * 1981-04-14 1985-10-09 Mitsubishi Denki Kabushiki Kaisha Drawer-type circuit breaker arrangement
US4703137A (en) * 1985-12-20 1987-10-27 Siemens Aktiengesellschaft Electric switchgear with a pull-out frame and a switching device that can be inserted therein

Also Published As

Publication number Publication date
GB9506483D0 (en) 1995-05-17
GB2288692B (en) 1998-03-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050330