Pressure fluid operated impact mechanism

Details Pressure fluid operated impact mechanism Pressure fluid operated impact mechanism

1998-07-15

1999-10-26

Vo, Peter

Tool driving or impacting

Self-acting advance and retraction cycle

173 13, 173121, 173204, 173211, B25D 900

Patent

active

059710837

ABSTRACT:
Pressure fluid operated impact mechanism having a reciprocating working member (5), a stop member (17) and, formed between said members, a drive chamber (18) with seals (15, 16) and a regulating valve (21) co-operating with a supply opening (25) for pressure fluid, in which opening a sleeve (24) can be arranged for the journalling of the valve. The valve blocks the opening when the working member (5) and the stop member (17) have moved a distance away from each other and is open when they are close to each other. Through the valve and the working member, a discharge channel (33, 31, 20, 32) for pressure fluid is provided which is closed when its inlet opening (33) is inside the stop member and is freed when the working and stop members have moved a distance away from each other.

REFERENCES:
patent: 2786451 (1957-03-01), Dulaney
patent: 3592275 (1971-07-01), Fletcher
patent: 4605073 (1986-08-01), Nilsson et al.
patent: 4609054 (1986-09-01), Nilsson et al.
patent: 5080179 (1992-01-01), Gien et al.
patent: 5755292 (1998-05-01), Nilsson et al.

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