← Back to Patent Explorer
US4920238A Expired / Lapsed US ⏱️ 0.0 years remaining

Self-centering switch

Assignee: Seiko Time Creation Inc
•
Filing: 1988-11-01
•
Granted: 1990-04-24
•
Expires: 2008-11-01
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A self-centering switch is provided with a rocker bar pivotally mounted to move between a neutral and an actuated position. A contact element having a pair of contact bearing resilient arms is mounted at the pivot axis of the rocker bar. The resilient arms are biased against the rocker bar and act to return the bar to its neutral position. The contact element may be connected to a control circuit formed on a circuit board and having one or more fixed contacts alternately engageable by the contacts on the resilient arms.

Inventors

  • 👤 Hideo Aso

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 06:30
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/001; H; H01; H01H; H01H23/00; H01H23/02; H01H2300/00; H01H2300/016

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 262 words
A self-centering switch comprising: a circuit board having a pair of spaced-apart fixed electric contacts mounted on a surface thereof; a stationary support rod disposed between the pair of fixed contacts; a pivotable rocker bar having a bar portion and a leg portion depending from the bar portion, the leg portion comprising a pair of resiliently spreadable fingers resiliently engageable with the support rod to thereby pivotally mount the rocker bar for pivotal movement in opposite directions about the support rod; and an electrical contact member having a pair of resiliently flexible arms each carrying a movable electrical contact and being electrically and structurally connected to said circuit board, the pair of flexible arms being positioned so that the movable contacts are opposite respective ones of the fixed contacts and the flexible arms resiliently engaging with the bar portion of the rocker bar to normally resiliently bias the rocker bar to a neutral position on the support rod in which the movable contacts are spaced from the respective fixed contacts so that pivotal movement of the rocker bar in one direction to one actuated position causes resilient flexure of one arm to move the movable contact carried thereby into electrical contact with one fixed contact and pivotal movement of the rocker bar in the other direction to another actuated position causes resilient flexure of the other arm to move the movable contact carried thereby into electrical contact with the other fixed contact, the rocker bar being returned from the actuated positions to the neutral position by the resilient bias of the arms.
Claim 2
Dependent Claim 262 words
A self-centering switch comprising: a circuit board having a pair of spaced-apart fixed electric contacts mounted on a surface thereof; a stationary support rod disposed between the pair of fixed contacts; a pivotable rocker bar having a bar portion and a leg portion depending from the bar portion, the leg portion comprising a pair of resiliently spreadable fingers resiliently engageable with the support rod to thereby pivotally mount the rocker bar for pivotal movement in opposite directions about the support rod; and an electrical contact member having a pair of resiliently flexible arms each carrying a movable electrical contact and being electrically and structurally connected to said circuit board, the pair of flexible arms being positioned so that the movable contacts are opposite respective ones of the fixed contacts and the flexible arms resiliently engaging with the bar portion of the rocker bar to normally resiliently bias the rocker bar to a neutral position on the support rod in which the movable contacts are spaced from the respective fixed contacts so that pivotal movement of the rocker bar in one direction to one actuated position causes resilient flexure of one arm to move the movable contact carried thereby into electrical contact with one fixed contact and pivotal movement of the rocker bar in the other direction to another actuated position causes resilient flexure of the other arm to move the movable contact carried thereby into electrical contact with the other fixed contact, the rocker bar being returned from the actuated positions to the neutral position by the resilient bias of the arms.
Claim 3
Dependent Claim 20 words
The self-centering switch of claim 1, in which said contact member comprises a conductive plate mounted on said support rod.
Claim 4
Dependent Claim 18 words
The self-centering switch of claim 2, in which said pair of arms are integral with said conductive plate.
Claim 5
Dependent Claim 39 words
The self-centering switch of claim 3, in which each of said arms is formed from a portion of said conductive plate bent relative to said conductive plate to a position substantially orthogonal to the plane of said conductive plate.
Claim 6
Dependent Claim 37 words
The self-centering switch of claim 1, in which said rocker bar is provided with a longitudinally extending actuator surface, and said pair of arms extend along said rocker bar substantially adjacent and parallel to said actuator surface.

References Cited (Backward Citations)

US2695343A Cited
US2708227A Cited
US3299224A Cited
US3408463A Cited
US3527913A Cited
US3529109A Cited
US3501607A Cited
US3882293A Cited
US4103126A Cited
US4599501A Cited
US4678871A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-04-23 1993-10-23 1994-04-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-04-23 1997-10-23 1998-04-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-04-23 2001-10-23 2002-04-24 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag