| 主权项 |
1. A locking hinge assembly, comprising:
a first hinge member having a hinge plate configured for attaching to a support surface and a sleeve bushing extending from an edge of the hinge plate, the sleeve bushing defining a through passageway and having a first diameter, and defining at least one tooth channel with at least opposing side walls, and open to the passageway, a second hinge member having a hinge plate configured for attaching to a second support surface and a sleeve bushing extending from an edge of the hinge plate and defining a through passageway, for co-axial alignment of the sleeve bushings; an elongated splined pin received in the aligned sleeve bushings, the pin having a root diameter and at least one tooth projecting therefrom to define a major diameter and configured for being received selectively in the tooth channel, whereby the tooth being received in the tooth channel permits rotational movement of the sleeve bushings relative to each other, until the pin is stopped by one of the side walls of the tooth channel; and a spring disposed on the pin and a cap received on the end of the pin, the spring bearing between an end of the sleeve bushing of one of the hinge members and the cap to bias the pin to a first position. |
