Anti-slip foot assembly
An anti-slip foot assembly for a strut is disclosed. An embodiment of the anti-slip assembly includes a heel pad adapted to resist normal forces applied by the strut, a plurality of independently flexible toes adapted to resist the lateral forces that tend to cause slipping. A foot assembly with retractable cleat system is also disclosed.
1. An anti-slip foot assembly comprising,
a. a plurality of toes, a heel-pad, a strut-socket, and a plurality of channels between the toes and heel-pad, wherein,
b. the strut-socket is securable to a strut,
c. the toes extend from the foot assembly and are independently flexible to conform to the contours of a surface obstacle;
d. the heel-pad extends from the foot assembly to the same level as the toes, allowing the heel-pad and toes to be in concurrent contact with a supporting surface,
e. the plurality of channels between the toes and the heel-pad are of sufficient depth to allow independent flexibility of the toes,
f. the strut-socket is centrally located on an upper face of the foot assembly,
g. the toes radiate around a lower face of the foot,
h. the heel-pad is located in the center of the toes, and
i. the heel-pad is aligned to the axis of the strut-socket.
2. The anti-slip foot of claim 1 , wherein,
a. the depth of the channel between the toes and the heel-pad is sufficient to allow a liquid to disburse from beneath the foot.
3. The anti-slip foot of claim 1 , wherein,
a. the depth of the channel between the toes and the heel-pad are is least ½ of the height of the foot.
4. The anti-slip foot of claim 1 , wherein,
a. the depth of the channel between the toes and the heel-pad are is least ¼ of the height of the foot.
5. The anti-slip foot of claim 1 , wherein the heel-pad includes
a. a surface-engaging face,
b. and wherein the surface-engaging face is covered by a tread pattern.
6. The anti-slip foot of claim 1 , wherein
a. the ground-engaging face of the toes are covered by a tread pattern.
7. The anti-slip foot of claim 1 , wherein,
a. the lower ground-engaging surface of the toes are covered by a tread pattern, and
b. and outer surface toes are covered by a tread pattern to increase grip against non-horizontal obstacles.
8. The anti-slip foot of claim 1 ,
a. wherein the outer circumference of the anti-slip foot is between 15 and 30 cm.
9. The anti-slip foot of claim 1 , wherein
a. the largest circumference of the anti-slip foot is between 50 and 100 cm.
10. The anti-slip foot of claim 1 , wherein
a. the largest circumference of the anti-slip foot is between 1 and 5 cm.
11. The anti-slip foot of claim 1 , wherein
a. the toes that are independently flexible to conform to the contours of a surface obstacle are manufactured from an elastomer selected from the group consisting of an isoprene, a natural rubber, a vulcanized natural rubber, a silicone and a cross linkage of EPDM rubber and polypropylenesantoprene.
12. The anti-slip foot of claim 1 , wherein
a. the toes are manufactured from an material with an elastic modulus of between 0.2 and 0.4 GPa.
13. The anti-slip foot of claim 1 , wherein
a. the toes are manufactured from an elastomer with a density of 0.75 to 2Mg/m3.