EP 0096029 A4 19840427 - ELECTRICALLY DRIVEN IMPACT TOOL.
Title (en)
ELECTRICALLY DRIVEN IMPACT TOOL.
Title (de)
ELEKTRISCH BETRIEBENES SCHLAGGERÄT.
Title (fr)
OUTIL A PERCUSSION ENTRAINE ELECTRIQUEMENT.
Publication
Application
Priority
US 8101649 W 19811210
Abstract (en)
[origin: WO8302082A1] One or both of a pair of oppositely rotating bodies, such as motor driven flywheels (F, F') are mounted for pivotal movement against the side of a ram (R). One or more tension rods (T) connect pivot shafts (15, 15') or members for equalizing precession and similar forces of rotating bodies, rather than housing (H). Pulsed solenoids (S, S') produce force increased by force multiplying device, such as pivoted links (27, 28, 27', 28') or cable arrangement (155, 160) which has greatest mechanical advantage when solenoid pull is weakest at start, but decreases as solenoid pull increases. Ram (R) has entrance taper (17) on one or both sides. Ram (R) is returned by nylon sheathed bundle (C) of elastomer cords which are looped around ram from both sides and stretched proportionally along their length. Removable guide rods (47) engage holes (120) in side wings (48) of ram (R). Safety device is actuated by rod (35), moved through engagement with work piece, for closing safety switch in solenoid circuit. Alternatively, a block (150) engages a ram wing (48) to prevent impact stroke, but is removed bya similar rod (35'). Alternatively, a stop block (183) is placed between motor housings to prevent movement against ram (R) until work piece is engaged and similar rod (185) moves spring pressed pivoted line (180) to withdraw stop block.
IPC 1-7
IPC 8 full level
B25D 11/00 (2006.01); B25C 1/06 (2006.01)
CPC (source: EP)
B25C 1/06 (2013.01)
Designated contracting state (EPC)
AT CH DE FR GB LI LU NL SE
DOCDB simple family (publication)
WO 8302082 A1 19830623; EP 0096029 A1 19831221; EP 0096029 A4 19840427; JP S58502044 A 19831201
DOCDB simple family (application)
US 8101649 W 19811210; EP 82900418 A 19811210; JP 50045282 A 19811210