F - Mech Eng,Light,Heat,Weapons – 16 – F
Patent
F - Mech Eng,Light,Heat,Weapons
16
F
F16F 3/04 (2006.01) F16F 1/32 (2006.01) F16F 3/02 (2006.01) F16F 15/06 (2006.01)
Patent
CA 2131139
Abstract A variable force die spring is disclosed which combines high force, short axial compression distance spring assembly, such as belleville springs, and low force, high axial compression distance springs, such as coil springs, in a telescoping casing having an internal cavity. The springs are arranged within the cavity so that upon receiving a load the low force spring will compress first resulting in a large axial compression and low force resistance. The load applied to the telescoping casing will then transition from the low force spring to the high force spring. The high force spring then compresses as the load continues to be applied. In alternative embodiments, a third intermediate spring is added that compresses moderate distances under moderate pressure thereby increasing the overall axial compression and load capacity capabilities of the spring assembly. In any embodiment, the invention results in a spring that provides high forces and low axial compression when it is nearly fully compressed and low forces and high axial compression at all other stages of compression.
Connell Limited Partnership
Marks & Clerk
LandOfFree
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