Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Reexamination Certificate
2006-05-16
2006-05-16
Thomas, David B. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
C081S121100
Reexamination Certificate
active
07044027
ABSTRACT:
A wrench compatible for use in limited access areas is made up of two components. A socket with fluted interior walls cooperates with a handle assembly consisting of a head with complementary fluting on its exterior surface attached to one end of a shaft. The head is inserted into the top of the socket and the shaft is rotated as far as the available space permits. The handle assembly is then lifted upward until the head is separated from the socket, the shaft is thereafter returned to the starting point, the head returned to the socket and rotated again. These steps are repeated until the nut or bolt is tightened or removed. The interior fluting permits the rotation of the socket by small or large increments. Additional embodiments include a spring loaded pin that connects the head of the handle assembly to the socket while assisting the head to be raised a sufficient distance for the head of the handle assembly to be rotated and reseated in the socket. Additional sockets with lower portions having different interior diameters can be used with the same handle assembly for nuts and bolts of smaller and larger diameters. An auxiliary extender and an alternate handle assembly make tight or narrow areas more accessible.
REFERENCES:
patent: 1355455 (1920-10-01), Doughty
patent: 1434635 (1922-11-01), Summers
patent: 1504035 (1924-08-01), Faw
patent: 2601800 (1952-07-01), Curtis
patent: 3482481 (1969-12-01), Newell et al.
patent: 575904 (1933-05-01), None
patent: 2605918 (1988-05-01), None
patent: 2645063 (1990-10-01), None
patent: 2697193 (1994-04-01), None
patent: 16793 (1913-04-01), None
patent: 604812 (1948-07-01), None
patent: 2275637 (1994-09-01), None
Kotin Sandra M.
Thomas David B.
LandOfFree
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