초록 ▼

A hinge (20) includes two hinge plates (22, 24) and a connecting hinge pin (32). A coil spring (48) supported on a bushing (44) overlies the hinge pin (32), which is free to move along its longitudinal axis (30). A cam follower (42) on the hinge pin (32) engages a cam (32) mounted to one of the hing

A hinge (20) includes two hinge plates (22, 24) and a connecting hinge pin (32). A coil spring (48) supported on a bushing (44) overlies the hinge pin (32), which is free to move along its longitudinal axis (30). A cam follower (42) on the hinge pin (32) engages a cam (32) mounted to one of the hinge plates (22), so that the hinge pin (32) slides longitudinally as the hinge plates (22, 24) pivot relative to each other about the hinge pin (32). As the hinge pin (32) slides longitudinally, it axially compresses or decompresses the spring (48). The cam (32) is oriented such that pivoting of the hinge plates (22, 24) in either direction from an open position compresses the spring (48), providing a restoring force which tends to retain the hinge plates (22, 24) in the open position.

대표청구항 ▼

A hinge system comprising at least a first hinge having: a first hinge plate having a first hinge plate hinge pin receiver thereon; a second hinge plate having a second hinge plate hinge pin receiver thereon; a cylindrical hinge pin extending between the first hinge plate hinge pin receiver and the

A hinge system comprising at least a first hinge having: a first hinge plate having a first hinge plate hinge pin receiver thereon; a second hinge plate having a second hinge plate hinge pin receiver thereon; a cylindrical hinge pin extending between the first hinge plate hinge pin receiver and the second hinge plate hinge pin receiver to pivotably join the first hinge plate and the second hinge plate, the hinge pin having a hinge pin axis coincident with a cylindrical axis of the hinge pin and about which the second hinge plate is pivotable with respect to the first hinge plate, the hinge pin being free to move in a direction parallel to the hinge pin axis relative to the second hinge plate; a cam fixed to the first hinge plate and having a cam surface thereon; a cam follower pin attached to and extending outwardly from the hinge pin transversely to the hinge pin axis and disposed to ride on the cam surface; a bushing fixed to the second hinge plate and overlying the hinge pin, the bushing having a slot therein extending parallel to the hinge pin axis; a coil spring overlying the bushing and having a first end fixed with respect to movement parallel to the hinge pin axis; a spring driver pin attached to and extending outwardly from the hinge pin transversely to the hinge pin axis and through the slot of the bushing, the spring driver pin being disposed to contact a second end of the spring.