Appeal No. 97-3194 Page 15
Application No. 08/442,816
10 to enable rod 46 to move freely in telescopic fashion in
body member 10. Annular grooves 50, transverse to the axis of
rod 46 are provided along a major portion thereof. Grooves 50
are generally semi-circular and are
axially spaced along rod 46 to provide intermediate surfaces
52. The hook end of rod member 12 is provided with a plastic
coating 54 similar to that provided on section 36 of body
portion 10.
As shown in Figures 4 and 5, Johnson's locating means 20
and locking means 22 are within housing 14. Locating means 20
is generally comprised of a spherical bearing 60, and biasing
spring 62 disposed within a bore 64 in housing 14. Bore 64
communicates with passage 38 by extending through portion 34
of tube 30. Spring 62 is confined within bore 64 in
compression such that bearing 60 is biased towards, and
partially exposed in, passage 38. Locking means 22 includes a
boss 70, a conventionally known key lock 72 and a locking
member 74. Locking member 74 is generally cylindrical in
shape and includes an arcuate outer surface 76 of a diameter
generally matching the semicircular grooves 50 in rod 46, and
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Last modified: November 3, 2007