Socket wrench assembly

Details Socket wrench assembly Socket wrench assembly

B - Operations, Transporting

25

G

81/46

B25G 3/02 (2006.01) B25B 13/46 (2006.01) B25G 3/20 (2006.01)

Patent

CA 1216180

HIGH TORQUE EXPANDABLE SOCKET RATCHET WRENCH ABSTRACT A ratchet wrench usable in areas of limited access normally requiring an open-end wrench, but possessing the high torque characteristics of a closed-end socket wrench is dis- closed. A handle member terminates in an expandable yoke containing a fixed upper half and an expandable lower half for movement from an expanded open position for receiving a socket to a closed position in driving engagement with the socket. A curved rib is formed transversely on the inner surface of each yoke half. A split ring-like nut driving socket contains exterior ratchet teeth and a circular bore formed transversely through the socket with a recessed counter bore forming a circular guide channel in the socket concentric with the trans- verse bore. The socket guide channel is received in rotational engagement with the curved ribs of the yoke halves. The socket contains a curved head having lands which in combination define a ploygonal wrench opening. A pawl mechanism mounted on the wrench handle member is resiliently biased into engagement with the ratchet teeth of the socket, thereby allowing it to turn in one direction only, and preventing rotation of the socket in the opposite direction. The split ring-like nut driving socket permits circumferential engagement of a nut through movement transverse to the socket access and the two-piece expandable yoke permits engagement of the socket by means of movement of the handle member transverse to the socket access.

449488

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