Appeal No. 97-1439 Page 11
Application No. 08/417,981
of Figure 4 is not preferred due to the somewhat problematic
sealing between the profiled ring 13 and the main tube 1, even
though an O-ring (not shown) could be inserted in an inner
circumferential groove (likewise not shown) of the profiled ring
13. Namur states that the adjustment fixture of his invention
exhibits the advantage of having the transition between the main
tube and the end tube well sealed against water and dirt particle
penetration (sand and the like).
Garringer discloses a system for mechanically joining
handrailing members. As shown in Figure 2, the system includes a
first railing member 20 having a male end defined by a male
protrusion 26 of reduced diameter with respect to the first
railing member 20 and an adjacent second railing member 30 having
a female end defined by a longitudinal hole 36 in the second
railing member 30 with the hole 36 shaped and dimensional to
receive the male protrusion 26 of the first railing member 26.
The second railing member 30 has a circumferential groove 32,
extending outwardly from the periphery of the hole 36, which is
positioned over an inwardly extending circumferential groove 22,
along the male protrusion 26 when the protrusion 26 is extended
fully into the hole 36 of the second railing member 30. A
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