Compound tools – With screwdriver
Patent
1988-11-14
1989-09-19
Parker, Roscoe V.
Compound tools
With screwdriver
29253, B25F 100
Patent
active
048668010
ABSTRACT:
A sprinkler riser extractor tool in the form of a screw driver having a head sized to fit the slot of the flow control screw in the nozzle of a sprinkler head and having a sleeve slidably mounted on the shaft of said screw driver formed with a flange adjacent the proximal end of said sleeve to facilitate actuation by the thumb of the operator and having a bushing adjacent the distal end of said sleeve for expanding said distal end when said sleeve is slid forwardly to engage the inside of a sprinkler riser for facilitating lifting of said riser.
REFERENCES:
patent: 2497633 (1950-02-01), Shapiro et al.
patent: 3825048 (1974-07-01), Triska
patent: 4229999 (1980-10-01), Rottigni
patent: 4577899 (1986-03-01), Hemingway
patent: 4696102 (1987-09-01), Overbay
patent: 4746158 (1988-05-01), Fields
patent: 4779494 (1988-10-01), Quach
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