Percussive tools

Details Percussive tools Percussive tools

1980-08-15

1982-10-12

Reynolds, Wm. Carter

Tool driving or impacting

Impacting devices

With means to cause or control advance of hammer head

310 15, B25D 904

Patent

active

043534260

ABSTRACT:
A percussive tool, for use in mining, quarrying, or excavating, comprising a reciprocable mass movable in one direction against the resistance of a spring by a movable permanent magnet assembly. A hydraulic ram moves the permanent magnet assembly. A plate between the ram and the magnet assembly acts as a flux diverter such that as the assembly is moved proximate the plate by the ram, flux passing through the mass is reduced and the spring forces the mass to impact a tool shank.

REFERENCES:
patent: 2861778 (1958-11-01), Spurlin
patent: 2949909 (1960-08-01), Macchioni et al.
patent: 3132268 (1964-05-01), Abel et al.
patent: 3792740 (1974-02-01), Cooley
patent: 3878412 (1975-04-01), Kurpanek

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