| 摘要 |
A multi-purpose wrench (10) used to open valves (V) on gas cylinders of various sizes. An elongate handle (12) has a ratchet formed at one end (12a). A socket (14) mounts on the ratchet and has a plurality of openings (20a,22a, 20b,22b) formed on opposite surfaces (18a, 18b) for engaging the stem of a valve (V3, V4) to open and close the valve. A disc (26) is attached to a ratchet (24) adjacent the other end of the handle to open gas cylinders of a different size. The disc includes a plurality of pins (28) which engage differently shaped wheels of valves (V1, V2) the wrench to open the valve when rotated.
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