| 摘要 |
Disclosed is a multi-coil spring assembly that is mounted in the weight pocket of a vertically operating window. The multi-coil spring assembly allows the user to connect any desired number of coil springs to the counterbalance connector to provide the desired amount of counterbalance force to the sash of a vertically operating window. The multi-coil spring assembly rotates into an interior portion of the window to allow simple and easy connection to the counterbalance connector and then retracts into the weight pocket in a recessed position for normal operation.
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