초록 ▼

One or both of a pair of oppositely rotating bodies, such as motor driven flywheels, are mounted for pivotal movement against the side of a ram. One or more tension rods connect pivot shafts or members for equalizing precession and similar forces of rotating bodies, rather than housing. Pulsed solen

One or both of a pair of oppositely rotating bodies, such as motor driven flywheels, are mounted for pivotal movement against the side of a ram. One or more tension rods connect pivot shafts or members for equalizing precession and similar forces of rotating bodies, rather than housing. Pulsed solenoids produce force increased by force multiplying device, such as pivoted links or cable arrangement, which has greatest mechanical advantage when solenoid pull is weakest at start, but decreases as solenoid pull increases. Ram has entrance taper on one or both sides. Ram is returned by nylon sheathed bundle of elastomer cords which are looped around ram from both sides and stretch proportionally along their length. Removable guide rods engage holes in side wings of ram. Safety device is actuated by rod, moved through engagement with work piece, for closing safety switch in solenoid circuit. Alternatively, a block engages a ram wing to prevent impact stroke, but is removed by a similar rod. Alternatively, a stop block is placed between motor housings to prevent movement against ram until work piece is engaged and similar rod moves spring pressed pivoted link to withdraw stop block.

대표청구항 ▼

In an impact tool for producing an impact against an object: (a) elongated ram means mounted for movement along a longitudinal path, in opposite directions; (b) a pair of oppositely rotating bodies for storing energy and mounted on opposite sides of said ram means for movement toward and away from s

In an impact tool for producing an impact against an object: (a) elongated ram means mounted for movement along a longitudinal path, in opposite directions; (b) a pair of oppositely rotating bodies for storing energy and mounted on opposite sides of said ram means for movement toward and away from said ram path, each said body having an axis of rotation generally perpendicular to the direction of movement of said ram means; (c) means for moving said bodies substantially simultaneously toward and into engagement with said ram means on the respective side thereof, whereby said rotating bodies impart linear movement to said ram means; (d) said moving means including force multiplying means and means for moving said force multiplying means; (e) said means for moving said force multiplying means being electrically actuated; (f) means for moving said bodies away from the path of said ram means; and (g) means for returning said ram means to its initial position.