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Patent US3861739A successfully refreshed from Google Patents.
US3861739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door for closing emergency exit opening for a bus
Assignee: Individual
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Filing: 1973-10-01
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Granted: 1975-01-21
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Expires: 1993-10-01
Abstract
Abstract An improved door for closing an emergency exit opening for a bus. The door is characterized by a door panel having a predetermined load supporting capability and configured to be received in a closed position within an exit opening, a first hinge supporting the door panel for pivotal displacement from the closed position, through an angle substantially greater than 90* about an axis normally related to the longitudinal axis of the bus, whereby the panel is employable as a simple closure member, a second hinge supporting the panel for displacement from the closed position, through an angle substantially greater then 90* about a second axis paralleling the longitudinal axis of the bus, whereby the panel is positioned for use as an exit ramp, and a selectively operable latch for releasing the door panel for alternative rotation about the first and second axes.
Inventors
- 👤 Ronald L Kinney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:06
CPC Classifications
B; B60; B60J; B60J5/00; B60J5/04; B60J5/0497; B60R; B60R3/00; B60R3/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
219 words
In combination with a bus having an elongated body including means defining an elongated passenger compartment, a door opening located near the forward end of said compartment for facilitating passenger ingress and egress, and at least one emergency exit opening located near the other end of said compartment through which passenger egress is facilitated, in the event egress through said door opening is impaired, a panel of a unitary configuration having a length sufficient to extend from said emergency exit opening into supported engagement with the supporting surface for said bus at an angle of inclination suitable for facilitating ambulatory egress from said emergency opening disposed within the emergency exit opening, means supporting said panel for pivotal rotation from said emergency exit opening about a first axis paralleling the longitudinal axis of said body into engagement with a supporting surface for said bus when the bus is oriented in an upright plane, means supporting said panel for pivotal rotation from said emergency exit opening about a second axis normally related to said first axis for facilitating a pivotal removal of said panel from said emergency exit opening when the vehicle is oriented in a plane angularly related to said upright plane, and means for releasing said panel from within said compartment for pivotal rotation from said emergency exit opening.
Claim 2
Dependent Claim
219 words
In combination with a bus having an elongated body including means defining an elongated passenger compartment, a door opening located near the forward end of said compartment for facilitating passenger ingress and egress, and at least one emergency exit opening located near the other end of said compartment through which passenger egress is facilitated, in the event egress through said door opening is impaired, a panel of a unitary configuration having a length sufficient to extend from said emergency exit opening into supported engagement with the supporting surface for said bus at an angle of inclination suitable for facilitating ambulatory egress from said emergency opening disposed within the emergency exit opening, means supporting said panel for pivotal rotation from said emergency exit opening about a first axis paralleling the longitudinal axis of said body into engagement with a supporting surface for said bus when the bus is oriented in an upright plane, means supporting said panel for pivotal rotation from said emergency exit opening about a second axis normally related to said first axis for facilitating a pivotal removal of said panel from said emergency exit opening when the vehicle is oriented in a plane angularly related to said upright plane, and means for releasing said panel from within said compartment for pivotal rotation from said emergency exit opening.
Claim 3
Dependent Claim
34 words
The improvement of claim 1 further comprising a hand rail affixed to said door panel and means for supporting said hand rail in a plane normally related to the plane of said door panel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |