Stabilized piston-cylinder impact device

Details Stabilized piston-cylinder impact device Stabilized piston-cylinder impact device

1974-12-19

1977-03-29

Purser, Ernest R.

Tool driving or impacting

Impacting devices

Spring bodily cyclically moved with hammer head

74583, 173117, 173122, 173139, 173162, B25D 1116

Patent

active

040143929

ABSTRACT:
A power driven crankshaft is mounted on a frame and is connected by a pair of connecting rods to a coupler body, having guide means thereon to limit movement of the body to straight line reciprocation. Selected positioning and arrangement of crankshaft, bearings, connecting rods, journals, wrist pins, power drive means, reciprocating body guide means and selected crankarm result in high impact force being delivered to an impact tool with significantly reduced energy loss caused by oscillatory structural deflections spurious vibrations, and rotations. An improved coupler incorporates an air spring with selected central vent means resulting in nearly constant spring stiffness.

REFERENCES:
patent: 973216 (1910-10-01), Rowe
patent: 1052823 (1913-02-01), Irvine
patent: 1191948 (1916-07-01), Coates
patent: 1813087 (1931-07-01), Sandage
patent: 2447886 (1948-08-01), Worth
patent: 3497017 (1970-02-01), Goettl et al.
patent: 3559751 (1971-02-01), Yamada
patent: 3688848 (1972-07-01), Vick
patent: 3741559 (1973-06-01), Ross

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