US PATENT SUBCLASS 152 / 36
.~.~.~.~ Annular pneumatic
Current as of:
June, 1999
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152 /
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RESILIENT TIRES AND WHEELS
1
DF
SPRING WHEELS
{3}
17
DF
.~ Spring encircling rigid annulus {10}
29
DF
.~.~ With plural spring types {6}
35
DF
.~.~.~ Pneumatic and coil {1}
36
.~.~.~.~ Annular pneumatic
DEFINITION
Classification: 152/36
In a spring wheel having a spring encircling rigid annulus supported by plural spring types limited to pneumatic and coil springs, the pneumatic spring forms a continuous ring about the wheel center.