Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1989-12-05
1992-03-31
Herrmann, Allan D.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
30392, 30394, 74 49, F16H 2134, B23D 4904
Patent
active
050997050
ABSTRACT:
A motorized reciprocating tool unit releasably receives a saw, file or like tools and includes a counterweight unit to stabilize system operation. The is greater than a weight necessary to compensate for the forces created during the working action. A variable counterbalance weight unit may be used to create during the tool operation to compensate for the changes in the reactive loading characteristic. The variable compensation counterweight unit includes a counterweight which is slidably mounted and a pivoting lever moving the counterweight in an opposite direction from that of the tool holder and drive. In the variable unit, the tool holder is mounted for pivotal movement and is spring loaded to the standby position such that work reaction forces deflect the tool and holder resulting in a relocation of the lever coupling to the counterweight unit. The ratio of the length of the lever arm varies to change the stroke of the counterweight and the counterbalance forces. The tool holder has a round opening with a larger diametric slot to receive a round shank as well as a flat shank associated with different tools and which are held in place by a set screw. The tool unit housing has an outermost housing for the power supply, either as a battery or a switch power lead assembly connected to a power cable. The tool housing permits access to the counterbalance weight for changing thereof.
REFERENCES:
patent: 1349283 (1920-08-01), Kollock
patent: 2895514 (1959-07-01), Wright
patent: 2949944 (1960-08-01), Blachly
patent: 3152398 (1964-10-01), Freeman
patent: 3240966 (1966-03-01), Thompson
patent: 3729823 (1973-05-01), Bos et al.
patent: 3916921 (1975-11-01), Pesola
patent: 3942251 (1976-03-01), Griffies et al.
patent: 4038721 (1977-08-01), Kendzior
patent: 4145811 (1979-03-01), Kendzior
patent: 4408623 (1983-10-01), Murray
patent: 4643207 (1987-02-01), Grahame
patent: 4699036 (1987-10-01), Henne
Herrmann Allan D.
Laub David W.
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