초록 ▼

A method of securing a torsion spring used in a counterbalance system in which the spring torsion cannot be released without first supporting any existing spring torque utilizes a torsion spring assembly including: a torsion rod extending along a longitudinal axis of and within a torsion spring; an

A method of securing a torsion spring used in a counterbalance system in which the spring torsion cannot be released without first supporting any existing spring torque utilizes a torsion spring assembly including: a torsion rod extending along a longitudinal axis of and within a torsion spring; an anchor member retaining a first end of the torsion spring with the torsion rod being rotatable about the axis relative to the anchor member; and a winding cone retaining a second end of the torsion spring. The winding cone includes a first winding cone coupling member including a frusto-conical surface retaining the second end of the torsion spring; and a second winding cone coupling member and a fastener. The second coupling member defines an area in which the fastener is received for releasably mounting the second coupling member to the torsion rod. The first coupling member is disposed adjacent and abuts the second coupling member for limited rotational movement between first and second rotational positions. The second coupling member includes a blocking portion which engages the first coupling member and prevents rotation of the first coupling member relative to the second coupling member in a first rotational direction when the first coupling member is in the first rotational position. The first coupling member includes a covering portion inhibiting access to the fastener in the first rotational position but permitting access in the second rotational position. The torsion spring urges the first coupling member in the first rotational direction.

대표청구항 ▼

[ What is claimed is:] [1.]1. A winding cone comprising:a first mounting component defining an area for receiving therein a fastener for mounting of said first component to a torsion rod for rotation therewith; anda second winding component receiving an end of a torsion spring, said second component

[ What is claimed is:] [1.]1. A winding cone comprising:a first mounting component defining an area for receiving therein a fastener for mounting of said first component to a torsion rod for rotation therewith; anda second winding component receiving an end of a torsion spring, said second component being disposed adjacent said first component for limited rotational movement about an axis of and relative to said first component between first and second rotational positions, said second component further including a covering portion disposed relative to said first component such that said covering portion inhibits access to said area of said fastener when said second component is in said first rotational position, and said covering portion permits access to said area of said fastener when said second component is in said second rotational position.