Modular cordless tools

Details Modular cordless tools Modular cordless tools

1974-08-23

1976-04-20

Miller, J. D.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

30DIG1, 200157, 310 50, 339 58, H02K 714

Patent

active

039522393

ABSTRACT:
Cordless electric tools or the like comprising a power handle and a plurality of diverse tool heads detachably securable thereto. The power handle includes battery means therein and operator controlled switch means, whereas each of the diverse tool heads may include an electric motor and an output means. The tool heads and power handle include interengageable means constructed for quick mechanical and electrical interconnection therebetween facilitating quick connection and disconnection of the power handle from the various tool heads without requiring any special tools or implements. Electrical interconnection is made automatically upon mechanical interconnection. In addition, a battery charger for the battery means may include similar mechanical and electrical connection means operatively engageable with the power handle to afford ready and easy charging of the battery means between uses of the power handle.

REFERENCES:
patent: 2907395 (1959-10-01), Moe
patent: 3210847 (1965-10-01), Prufer
patent: 3219067 (1965-11-01), Meyer
patent: 3417469 (1968-12-01), Cousins et al.
patent: 3533119 (1970-10-01), Dokos
patent: 3550280 (1970-12-01), Palm

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