Double draw bar spring mechanism

Details Double draw bar spring mechanism Double draw bar spring mechanism

E - Fixed Constructions

05

F

E05F 1/08 (2006.01)

Patent

CA 2698839

A double slide arm spring mechanism for biasing a primary mechanism to home position after operation and retaining the primary mechanism in the home position pending further operation. The double slide arm spring mechanism includes a pair of slideably interlocking arms each having a longitudinal frame member and a spring engaging flange at each end. The frame members are a disposed to engage one another while permitting relative sliding of the arms. The slide arms are interlocked such that one flange of each arm is situated between the two flanges of the other arm. Two compression springs are retained between the flanges of the arms such that sliding of either arm toward the other necessarily compresses both springs. Potential energy stored in the springs returns the slide to its neutral position when the operator is released thereby also returning the operator to its neutral position. The slide arms produce twice as much force to return operator to it neutral position as would be possible using springs of the same length operated independently.

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