US3825092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for mobile conveyances
Assignee: Individual
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Filing: 1972-04-10
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Granted: 1974-07-23
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Expires: 1992-04-10
Abstract
Abstract The device is used in conjunction with conveyances powered by internal combustion engines having electrical ignition systems. The device includes an on-off switch which is connected in series with the ignition system and which includes a plunger which moves from a retracted position in which the electrical system is activated to an extended position in which the engine is shut down. A cord is connected at one end to the plunger and at the other end, to attachment means which is adapted to be releasably connected to the driver of the conveyance. Incorporated in the cord is a severable member which, upon application by the cord of a tensile force greater than the force required to move the plunger from a retracted position to an extended position under normal weather conditions, separates so that the cord no longer interconnects the plunger and the attachment means. The cord is of sufficient length to accommodate movement of the driver while on the conveyance only so that upon removal of the driver from the conveyance, the cord becomes taut with resulting movement of the plunger from a retracted to an extended position thereby shutting off the engine.
Inventors
- 👤 H Douglas
- 👤 K Graydon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:52
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/02; H01H3/022; H01H3/0226; B; B60; B60K; B60K28/00; B60K28/02; B60K28/04; F; F16; F16B; F16B45/00; F16B45/02; F16B45/036; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3913
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
379 words
In a safety device for the drivers of mobile conveyances such as vehicles, boats and the like, said conveyances being powered by internal combustion engines including an electrical ignition system, an electrical cut-off switch adapted to render said electrical ignition system operative or inoperative selectively, attachment means adapted to be releasably connected to the driver, a flexible cord connected to said attachment means and to a movable actuation plunger in said switch, the improvement comprising: a severable member incorporated in said cord to separate said cord into two sections, one section of which being connected to said attachment means and the other section being connected to said actuation plunger, said severable member including two portions releasably engaged together, one portion of which being connected to one free end of said one section of said cord and the other portion being connected to the free end of said other section of said cord, said two portions comprising an outer cylinder and an inner cylinder operatively and axially aligned with and operative to be received at least in part within said outer cylinder, said inner cylinder having a collar formed on its peripheral outside edge portion, said outer cylinder having an inwardly projecting flange portion formed on its inner edge portion whereby when said inner cylinder is received within said outer cylinder said collar and said flange portion cooperate to prevent said inner cylinder from being removed from said outer cylinder unless a separating force greater than the force required to move said plunger from a retracted position to an extended position is applied to said outer and inner cylinders through said cord, said outer cylinder and said inner cylinder each having a closed end wall formed with an aperture for receipt of said one free end of said one section of said cord within said outer cylinder and for receipt of the other free end of said other section of said cord within said inner cylinder, said one free end being held within said outer cylinder by means of a first enlarged bead attached to said one free end, and the other free end of said other section of said cord being held within said inner cylinder by means of a second enlarged bead attached to said other free end.
Claim 2
Dependent Claim
379 words
In a safety device for the drivers of mobile conveyances such as vehicles, boats and the like, said conveyances being powered by internal combustion engines including an electrical ignition system, an electrical cut-off switch adapted to render said electrical ignition system operative or inoperative selectively, attachment means adapted to be releasably connected to the driver, a flexible cord connected to said attachment means and to a movable actuation plunger in said switch, the improvement comprising: a severable member incorporated in said cord to separate said cord into two sections, one section of which being connected to said attachment means and the other section being connected to said actuation plunger, said severable member including two portions releasably engaged together, one portion of which being connected to one free end of said one section of said cord and the other portion being connected to the free end of said other section of said cord, said two portions comprising an outer cylinder and an inner cylinder operatively and axially aligned with and operative to be received at least in part within said outer cylinder, said inner cylinder having a collar formed on its peripheral outside edge portion, said outer cylinder having an inwardly projecting flange portion formed on its inner edge portion whereby when said inner cylinder is received within said outer cylinder said collar and said flange portion cooperate to prevent said inner cylinder from being removed from said outer cylinder unless a separating force greater than the force required to move said plunger from a retracted position to an extended position is applied to said outer and inner cylinders through said cord, said outer cylinder and said inner cylinder each having a closed end wall formed with an aperture for receipt of said one free end of said one section of said cord within said outer cylinder and for receipt of the other free end of said other section of said cord within said inner cylinder, said one free end being held within said outer cylinder by means of a first enlarged bead attached to said one free end, and the other free end of said other section of said cord being held within said inner cylinder by means of a second enlarged bead attached to said other free end.
Claim 3
Dependent Claim
21 words
The safety device according to claim 1 in which said severable member is formed of a strong and substantially elastic material.
Claim 4
Dependent Claim
42 words
The safety device according to claim 1 in which said plunger is received within an axial opening of said switch and said axial opEning is bevelled to allow the cord to be pulled from any operating direction without snagging on said opening.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |