US PATENT SUBCLASS 49 / 386
.~ With biasing means


Current as of: June, 1999
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49 /   HD   MOVABLE OR REMOVABLE CLOSURES

381  DF  WITH MEANS MOUNTING CLOSURE FOR SWINGING {13}
386.~ With biasing means {1}
387  DF  .~.~> Distinct weight


DEFINITION

Classification: 49/386

(under subclass 381) Device provided with means for urging or retaining the closure to an open or a close position by a biasing action thereon, e.g., spring weight.

SEE OR SEARCH THIS CLASS, SUBCLASS:

21+, for closure biased to a desired position, and having means responsive to the presence of a fluid to move the closure against the action of the biasing means.

60, for a closure having a biasing means, such as a spring, in which energy is stored by the operation of an animal scarer while the closure is being opened, and which means urges the closure to a closed position.

89, for a biasing means for interconnected lower type closures.

197+, for a means to bias a closure from a vertical to a withdrawn horizontal overhead position. 236+, for a swinging closure having multidirectional opening and closing movement in which one direction is against the force of gravity to bias the closure to move oppositely; e.g., rising hinge type.

273+, for a load maintained; self-returning pedal or treadle actuated closure.

379, for a latch release, self-returning closure.

SEE OR SEARCH CLASS

16, Miscellaneous Hardware,

277+, for resiliently biased hinges; and subclass 71 for closer hardware.

248, Supports,

417, for a biased or self-returning rotating stand.