Abstract: A power compass saw with a housing that accommodates a lifting rod for the up and down movement of a longitudinal saw blade attached thereto, has a toothed side and a saw blade back and with a guide roller which supports the saw blade back and has a central groove into which the saw blade extends with its saw blade back and is guided therein, the central circumferential groove has tapered groove sides with a 5° taper, the saw blade back has a straight portion and an end beveled portion with beveled edges having a 7° taper at both sides, the saw blade back has diametrically opposed edges provided at a transition from the straight portion to the beveled portion, and the saw blade back has a width which is measured between the diametrically opposed edges and is greater than a width of a bottom of the circumferential groove.

Abstract: A power compass saw (10) with a housing (12) that accommodates a lifting rod for the up and down movement of a longitudinal saw blade (27) attached thereto, the saw blade having a toothed side and a saw blade back (270), and with a guide roller (29) which supports the saw blade back (270) and has a central circumferential groove (290) into which the saw blade extends with its saw blade back (270) and is guided therein, whereby the sides of the circumferential groove (290) are tapered, the power compass saw functioning particularly precisely and efficiently due to the fact that the saw blade back (270) of the saw blade (27) is designed with a 7° conical configuration and/or taper on both sides, so that it tapers toward the saw blade back (270) and is capable of being supported in two dimensions in the circumferential groove (290), the groove sides (291) of which have a 5° taper.

Abstract: In a soft grip element for hand-operated electric machine tools which have a machine housing (10) with a molded-on or attached handle, which has a stiff shell body (18) which is detachably placed machine housing (10) and/or the handle (11), and a coating (19) of soft elastic material which covers the shell body, to form an air reservoir under the surface of the user's hand, in the free surface of the coating (19) a host of recesses (20) is made.

Abstract: A compass saw has a lifting rod for receiving a saw blade which extends downwardly beyond a base plate and supported under the base plate in the region of a saw blade back. A supporting element is formed as a sword extending parallel and in alignment with the saw blade. The saw blade is secured from lateral deviation and bending in that the sword is turnable about an axis located above the base plate and extending substantially parallel to the base plate.

Abstract: An electric motor-operated grass cutter includes a housing; an electric motor; a plurality of cutting blades projecting from the housing, at least one of which is driven by the electric motor so as to reciprocate, and a chargeable storage battery connectable electrically with the electric motor. The storage battery also has a plurality of electrical contact lugs for charging. So that it can be charged safely and rapidly without disassembly the grass cutter also includes a charging socket mounted on the housing and accessible from the outside. The charging socket can have a plurality of additional contact lugs to facilitate electrical connection of a plug of an external charging device with the storage battery. The chargeable storage battery is structured so as to be quick-chargeable and external devices for quick-charging and trickle charging can be provided. A temperature contact lug can be provided for transmitting measured values of temperature for monitoring the quick charging.