Appeal No. 2004-0390 Page 6
Application No. 09/727,397
adapted to bear against the edges 23 and 24 of the socket and so insure the work
receiving opening in the member being always in position to receive the work.
Kohal's invention relates to the field of socket wrenches, and more particularly to
a socket wrench having a ratchet head which is orthogonally pivotable with respect to
the wrench handle so that the wrench handle may be adjusted at an angle with respect
to the surrounding work surface. As shown in Figures 1-7, the socket wrench has a
ratchet housing 4 extending from a wrench handle 2. Ratchet housing 4 has a circular
hole therein, about axis 102. The inside of the hole has an interior surface 41 which is
partially spherical in shape. On opposite sides of interior surface 41 are two flat
portions 42a and 42b which are orthogonally intersected by axis 103. Axis 103 is the
ratchet head pivot axis. Within ratchet housing 4 is disposed a ratchet head 6 which is
generally circular in shape and has an exterior surface 61 which is also partially
spherical in shape. Exterior surface 61 movably fits within interior surface 41 of ratchet
housing 4. Ratchet head 6 also has flat portions 62a and 62b which abut flat portions
42a and 42b, respectively. Thus, as ratchet head 6 pivots within ratchet housing 4, flat
portions 62a and 62b rotate about axis 103 and slidably abut flat portions 42a and 42b
as bearing surfaces. During such pivoting, exterior surface 61 rotates within interior
surface 41. Within ratchet head 6, is mounted a ratchet device 8 which includes drive
member 10 and ratchet lever 12. Drive member 10 is adapted to be coupled to various
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Last modified: November 3, 2007