Base structure of a motor saw

Details Base structure of a motor saw Base structure of a motor saw

1985-09-23

1987-10-20

Schran, Donald R.

Cutlery

Cutting tools

Saw

30124, 123195C, 123198E, 181204, F02B 7702, F02F 700, B23D 5702

Patent

active

047004800

ABSTRACT:
A base structure of a motor saw forms fuel and oil tanks (16,17) and a crankcase bottom in one piece. This piece is injection moulded in plastics with closed tank cavities obtained by means of cores in the mould which are made of a metal having a melting temperature lower than the softening temperature of the plastic material. After moulding the cores are melted by heat treatment and the metal runs out through filling holes (18,19) of the tanks. Armouring pieces are moulded in the plastics to reinforce the attachments of crankshaft bearings and the guide bar.

REFERENCES:
patent: 3036566 (1962-05-01), Dobbertin
patent: 3857179 (1974-12-01), Haupt et al.
patent: 4285309 (1981-08-01), Johansson
patent: 4434756 (1984-03-01), Nilsson et al.

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