← Back to Patent Explorer
US3638181A Expired / Lapsed US ⏱️ 0.0 years remaining

Vehicle deceleration signaling apparatus

Assignee: Individual
•
Filing: 1968-03-28
•
Granted: 1972-01-25
•
Expires: 1988-03-28
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Stoplight signaling equipment for a motor vehicle comprising a normally open inertia switch electrical contacts of which are connected in a circuit controlling illumination of a warning light and are closed by movement of an inertia element in the switch caused by inertia forces upon bodily acceleration of the switch. The switch is preferably mounted on throttle linkage of the vehicle to be moved bodily upon actuation of that linkage so that on sudden release of the throttle the switch is accelerated bodily to cause closure of contacts whereby light is illuminated even before vehicle brake is applied.

Inventors

  • 👤 Ensor Alexander Bryant

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 22:17
CPC Classifications
H; H01; H01H; H01H21/00; H01H21/02; H01H21/18; H01H21/22; H01H21/24; H01H21/26; B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44; B60Q1/441

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 221 words
Stoplight signaling apparatus in combination with a throttle linkage, a stop warning light and an electrical circuit controlling the illumination of said warning light, for a motor vehicle, said apparatus comprising: a switch having a switch body, an inertia element carried in the switch body and mounted therein to define a normal condition position with respect to said switch body, said inertia element and said switch body being intercoupled to enable relative movement of said inertia element to a warning condition position upon acceleration of said switch body, electrical contact means coupling said inertia element to said electrical circuit, said contact means being positioned relative to said inertia element in its normal condition position so that the warning light is not illuminated, said contact means operable by relative movement of said inertia element from its normal condition position to cause illumination of the warning light, connection means between said throttle linkage and said switch for bodily moving said switch with respect to the vehicle by actuation of the throttle linkage and means coupled to said switch body to prevent relative movement of the inertia element from its normal condition position with respect to the switch body when the throttle approaches its fully opened condition, whereby, on sudden closure of the throttle, inertia forces cause said relative movement of the inertia element.
Claim 2
Dependent Claim 221 words
Stoplight signaling apparatus in combination with a throttle linkage, a stop warning light and an electrical circuit controlling the illumination of said warning light, for a motor vehicle, said apparatus comprising: a switch having a switch body, an inertia element carried in the switch body and mounted therein to define a normal condition position with respect to said switch body, said inertia element and said switch body being intercoupled to enable relative movement of said inertia element to a warning condition position upon acceleration of said switch body, electrical contact means coupling said inertia element to said electrical circuit, said contact means being positioned relative to said inertia element in its normal condition position so that the warning light is not illuminated, said contact means operable by relative movement of said inertia element from its normal condition position to cause illumination of the warning light, connection means between said throttle linkage and said switch for bodily moving said switch with respect to the vehicle by actuation of the throttle linkage and means coupled to said switch body to prevent relative movement of the inertia element from its normal condition position with respect to the switch body when the throttle approaches its fully opened condition, whereby, on sudden closure of the throttle, inertia forces cause said relative movement of the inertia element.
Claim 3
Dependent Claim 15 words
The apparatus claimed in claim 1, wherein said switch is mounted on said throttle linkage.
Claim 4
Dependent Claim 47 words
The apparatus claimed in claim 2, wherein said throttle linkage comprises an elongate rod member mounted for rotation about its longitudinal axis upon actuation of the throttle linkage and the switch is mounted on an arm which extends transversely from said rod member and is rotatable therewith.
Claim 5
Dependent Claim 35 words
The apparatus claimed in claim 1 and further comprising means within said switch body to prolong the illumination of the warning light caused by the movement of the inertia element from its normal condition position.
Claim 6
Dependent Claim 61 words
The apparatus claimed in claim 4, wherein the means to prolong the illumination of the warning light comprises a pneumatic damper housed within said switch and arranged to maintain said electrical contact means operable by damping the movement of the inertia element back to its normal condition position, after it has been moved to initiate the illumination of the warning light.
Claim 7
Dependent Claim 55 words
The apparatus claimed in claim 1 wherein said last-named means comprises a plunger mounted on the switch body and a stop fixed to the vehicle body positioned to engage said plunger as the throttle approaches its fully opened condition, whereby the plunger is moved with respect to the switch body to engage the inertia element.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-01-24 1975-07-26 1976-01-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-01-24 1979-07-26 1980-01-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-01-24 1983-07-26 1984-01-25 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag