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US9616581B1
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Precisely controllable gripper assembly for low force applications
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US4670940A
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Torsion spring mounting structure
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US4681307A
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Socket construction for torsion member
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US4621391A
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Torsion spring mounting structure for ensuring proper torsion spring orientation
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US4571775A
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Counterbalance device and torsion member usable therein
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US4589164A
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Variable tension device with adjustable features for spring rate, initial tension and connection to external parts
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CA1215008A
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Counterbalance device and torsion member usable therein
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US4016960A
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Dashpot with guided piston
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US3939947A
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Dashpot for either push or pull damping
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US3799299A
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Damping dashpot assembly
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US3854557A
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Universal joint for piston-connecting rod assembly
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US3800921A
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Dashpot assembly with sheath having built-in valve
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US3638769A
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Dashpot assembly
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