CA2181489A1 - Method and apparatus for switching mechanism - Google Patents

Method and apparatus for switching mechanism

Info

Publication number
CA2181489A1
CA2181489A1 CA 2181489 CA2181489A CA2181489A1 CA 2181489 A1 CA2181489 A1 CA 2181489A1 CA 2181489 CA2181489 CA 2181489 CA 2181489 A CA2181489 A CA 2181489A CA 2181489 A1 CA2181489 A1 CA 2181489A1
Authority
CA
Canada
Prior art keywords
spring
housing
substantially fixed
movable contacts
actuator
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 2181489
Other languages
French (fr)
Other versions
CA2181489C (en
Inventor
Richard Owen Glasson
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.)
CALCULAGRAPH Co
Original Assignee
CALCULAGRAPH 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 US08/667,299 external-priority patent/US5671841A/en
Application filed by CALCULAGRAPH Co filed Critical CALCULAGRAPH Co
Publication of CA2181489A1 publication Critical patent/CA2181489A1/en
Application granted granted Critical
Publication of CA2181489C publication Critical patent/CA2181489C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/04—Cases; Covers
    • H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button

Abstract

A switching mechanism comprising a housing, a spring, first and second movable contacts mechanically attached to the spring, first and second substantially fixed contacts attached to the housing, and an actuator is provided. The spring comprises first and second edges substantially fixed to the housing. In a rest position the first and second movable contacts do not electrically contact the first and second substantially fixed contacts, respectively. The actuator centrally actuates the spring to cause the first and second movable contacts to move in the same direction as the central portion of the spring and to electrically contact the first and second substantially fixed contacts. The spring is preferably a snap spring shaped in the form of a cross comprising a column member and first and second protruding wings. The first and second movable contacts are preferably mechanically and electrically connected to the first and second protruding wingsrespectively. The actuator preferably includes a ball, a substantially cylindrical portion having a first outer diameter, and a seal having a second outer diameter. The seal is preferably an O-ring seal which is designed to fit tightly around the substantially cylindrical device and tightly inside the housing.
CA 2181489 1995-08-14 1996-07-18 Method and apparatus for switching mechanism Expired - Fee Related CA2181489C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US514595P 1995-08-14 1995-08-14
US08/514,595 1995-08-14
US08/667,299 US5671841A (en) 1995-08-14 1996-06-20 Method and apparatus for switching mechanism
US08/667,299 1996-06-20

Publications (2)

Publication Number Publication Date
CA2181489A1 true CA2181489A1 (en) 1997-02-15
CA2181489C CA2181489C (en) 2001-06-12

Family

ID=26673985

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2181489 Expired - Fee Related CA2181489C (en) 1995-08-14 1996-07-18 Method and apparatus for switching mechanism

Country Status (2)

Country Link
EP (1) EP0758790A3 (en)
CA (1) CA2181489C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6175569B1 (en) * 1997-11-07 2001-01-16 International Business Machines Corporation Extending asynchronous transfer mode ATM QoS across local area networks
FR2913809B1 (en) * 2007-03-14 2009-06-05 Nicomatic Sa Sa PUSH BUTTON TYPE SWITCH, AND PRINTED CIRCUIT INCLUDING THE SAME

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE350055C (en) * 1920-05-08 1922-03-13 Geza Von Martiny Electric momentary switch
US3898402A (en) * 1973-08-27 1975-08-05 Airpax Electronics Snap switch with actuating tongue
US3996429A (en) * 1975-04-18 1976-12-07 Northern Electric Company Limited Multi-contact push-button switch having plural prestressed contact members designed to provide plural circuit simultaneous switching inputs
US4250367A (en) * 1978-07-14 1981-02-10 Ranco Incorporated Snap action switch blades
US5190150A (en) * 1991-07-11 1993-03-02 Honeywell Inc. Ball bearing plunger actuator for a switch

Also Published As

Publication number Publication date
CA2181489C (en) 2001-06-12
EP0758790A3 (en) 1998-11-04
EP0758790A2 (en) 1997-02-19

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130718