Motors: expansible chamber type – Constantly applied motive fluid with controlled venting – Cyclically operable
Patent
1977-03-15
1978-10-03
Maslousky, Paul E.
Motors: expansible chamber type
Constantly applied motive fluid with controlled venting
Cyclically operable
91217, 91325, F01L 2102, F01B 1502
Patent
active
041177649
ABSTRACT:
A vibration attenuating device to be used in conjunction with reciprocating-motion type impact mechanisms having working and stop members that are axially movable relative towards or away from one another. The members define a pressure chamber therebetween, which is in communication with a source of pressure medium and is sealed by a flexible sealing material such as an O ring. Each member is acted upon by a compression spring exerting a force on the individual member in a direction towards the other member. The introduction of the pressure medium into the pressure chamber results in a cycle comprising the (1) members being forced away from each other, (2) the pressure medium escaping from the pressure chamber and (3) the members being returned to their original positions by the action of the springs. The invention provides a completely balanced two mass system which is particularly useful in conjunction with impact mechanisms used for hand tools. This balanced two mass system attenuates tool vibrations that would normally be transmitted to the operator of this tool.
REFERENCES:
patent: 1780817 (1930-11-01), Dubois
patent: 3236157 (1966-02-01), Lovell et al.
patent: 3427987 (1969-02-01), Gull
patent: 3862544 (1975-01-01), Callahan
Edstrom Kjell
Nilsson Goran Alfred
Wiklund Henry
Maslousky Paul E.
Munson Eric Y.
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