4. Brakes
  5. Internal-resistance motion retarder
  6. Resistance alters relative to direction of thrust member

Archie L. Evans

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Adjustable speed gas spring

Brakes – Internal-resistance motion retarder – Resistance alters relative to direction of thrust member
Patent

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Damper

Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber
Patent

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Seal

Seal for a joint or juncture – Seal between relatively movable parts – Piston ring or piston ring expander or seat therefor
Reexamination Certificate

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Profile ID: LFUS-PAI-P-987430

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