Patent ID: 8117947

Claim:
A power ratchet assembly comprising: a handle having one end; and a recess axially defined in the end of the handle and having an inner surface; a power shaft axially and rotatably mounted in the recess; a sleeve securely mounted in the inner surface of the recess and having an inside space and an inner surface; a crankshaft rotatably mounted through the sleeve and having two ends; an outer surface; a round disc section mounted in the inside space of the sleeve, radially protruding from the outer surface of the crankshaft and having two sides; an eccentric rod eccentrically protruding from one end of the crankshaft and out of the recess of the handle; a shaft hole axially defined in the other end of the crankshaft and surrounding the power shaft; and multiple gear openings radially defined in the disc section at intervals and respectively communicating with the shaft hole; multiple planet gears respectively and rotatably mounted in the gear openings, each planet gear protruding from a corresponding gear opening and engaging the inner surface of the sleeve and the power shaft; multiple pins mounted in the disc section and respectively and axially mounted through the planet gears; two support bearings securely mounted around the crankshaft, securely mounted in the inner surface of the sleeve and respectively facing the sides of the disc section; and a ratchet head device mounted securely on the end of the handle and having a head having an inner surface; and a connecting bearing securely mounted in the inner surface of the head and around the crankshaft between the eccentric rod and a corresponding support bearing.