Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent
1996-08-21
1998-04-21
Meislin, D. S.
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
81 54, 81 5739, 81338, 81112, 81 902, 279 50, B25B 1346, B25B 1328, B25B 714
Patent
active
057407045
ABSTRACT:
A ratchet wrench (10) includes a unitary socket assembly (20) having a collet (26) and an adjustable fastener engaging socket (24) which may be positioned over a conventional fastener and which may then be decreased in diameter to effect a gripping attachment of a fastener. The socket assembly (20) includes a stud (28) that is releasably engageable with the ratchet wrench (10). A locking lever (80, 80A) is attached to the ratchet wrench (10) and is usable both to decrease the diameter of the socket (24) and to releasably lock the socket in attachment with the fastener. The locking lever (80, 80A) may employ ratchet and pawl members (400, 402). If desired, the ratchet wrench (10) may instead be pneumatically activatable. Further, the wrench (10) also includes a camming means for reducing the diameter of the adjustable fastener engaging socket (24) formed on the inside of the leading edge of the collet (26), and on the outside edge of the socket. The socket (24) comprises a plurality of longitudinally-extending, parallel fingers (36). A plurality of longitudinally extending, parallel slots (200) may be formed inside the collet (26) to receive the fingers (36).
REFERENCES:
patent: 1429861 (1922-09-01), Flodin
patent: 2592978 (1952-04-01), Trimboli
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