Appeal No. 98-1532
Application No. 08/438,533
of this guard is to “prevent the growth of weeds and grass
around the head,” “without in any way altering, adding to or
removing from the conventional sprinkler head” (column 1, line
30 et seq.). Listed as an objective is draining water away
from the sprinkler head to promote this purpose (column 1,
lines 59-65), which no doubt is accomplished by its dome
shape. The guard is described as being for use with systems
in which the sprinkler is “about flush with the upper surface
of the ground so that it will not injure a lawn mower nor be
injured thereby, and so that it will not be obtrusive or be
objectionable to persons walking over the lawn” (column 2,
lines 12-15). The sprinkler heads may include the type that
move upwardly under the pressure of the water (column 2, lines
16-18). As shown in Figure 2 and described in column 2, the
Block device is placed in a depression dug into the ground in
such a position as to have the top of the dome flush with the
surface of the ground, and is installed around the sprinkler
by separating the two plates and then attaching them together
so that they “snugly engage the sides of the head” (column 3,
lines 19-20).
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Last modified: November 3, 2007