Two-way band brake for a caster
A mechanical two-way controlled band brake has components, such as a lever, a yoke having arms and a guiding bar, a brake band, anchoring points, pivots and brake drums, which are preferably made of metal or metal alloys. The components of the mechanical two-way controlled band brake may be also made of other materials, such as plastics, combination of metal alloys and plastics or any other materials, which are firm with sufficient bearing capacity.
1 . A mechanical two-way band brake for a caster comprising:
a vertical axis pivot,
a control member,
a fork, and
a lever that bears on a yoke at least on one end of the lever, whereas the yoke comprises at least one anchoring point on at least one arm of the yoke and is coupled to the fork, whereas the anchoring point is supported by a support of the fork and simultaneously located in a yoke slot of a guiding bar, whereas the yoke is supported free on the support of the fork and in parallel is supported by a spring, whereas in addition the yoke comprises ends and the at least one anchoring point comprises at least one anchoring point at each of the ends of the yoke to fix a brake band to the yoke, wherein the brake band encircles a brake drum of the caster in spiral.
2 . The mechanical two-way band brake according to claim 1 , wherein the at least one arm and the anchoring points comprise at least two bearing arms with anchoring points for fixing of the yoke and at least two bearing arms with anchoring points for fixing the brake band.
3 . The mechanical two-way band brake according to claim 2 wherein the at least two anchoring points are simultaneously pivots should the yoke be in braked position.
4 . The mechanical two-way band brake according to claim 1 , wherein the brake band comprises lugs in each end to fix the brake band to the anchoring points of the yoke whereas the yoke is flexibly vertically movable in a body of the yoke.
5 . The mechanical two-way band brake according to claim 1 , wherein the brake band is metal.
6 . The mechanical two-way band brake according to claim 1 , wherein the brake band is made of materials selected from a group of materials consisting essentially of metal alloys, metal wire, plastics, and plastic alloys.
7 . The mechanical two-way band brake according to claim 1 , wherein the yoke is one unit and the at least one arm comprises four arms and the anchoring points comprise four anchoring points and the yoke is metal.
8 . The mechanical two-way band brake according to claim 1 , wherein the yoke is one unit and the at least one arm comprises four arms and the anchoring points comprise four anchoring points and the yoke is made of materials selected from a group of materials consisting essentially of metal alloys, metal wire, plastics, and plastic alloys.
9 . A method of braking a two way band brake, the method comprising the step of:
providing a mechanical two-way band brake for a caster comprising:
a fork, and
a lever that bears on a yoke at least on one end of the lever, the yoke comprising at least one anchoring point on at least one arm of the yoke and being coupled to the fork, the anchoring point being supported by a support of the fork and simultaneously located in a yoke slot of a guiding bar, the yoke being supported free on the support of the fork and in parallel being supported by a spring, the yoke further comprising ends and the at least one anchoring point comprising at least one anchoring point at each of the ends of the yoke to fix a brake band to the yoke, the brake band encircling a brake drum of the caster in spiral, and
releasing the lever releases the yoke by which a position of the yoke changes and the brake band shrinks around the brake drum, whereas a change of the yoke depends on a direction of rotation of the brake drum of the caster, wherein releasing the lever bearing onto the yoke changes the position of the yoke by the spring and thus the brake band shrinks around the brake drum.
10 . A method of braking a two way band brake of claim 1 , the method comprising the step of:
providing a mechanical two-way band brake for a caster comprising:
a fork, and
a lever that bears on a yoke at least on one end of the lever, the yoke comprising at least one anchoring point on at least one arm of the yoke and being coupled to the fork, the anchoring point being supported by a support of the fork and simultaneously located in a yoke slot of a guiding bar, the yoke being supported free on the support of the fork and in parallel being supported by a spring, the yoke further comprising ends and the at least one anchoring point comprising at least one anchoring point at each of the ends of the yoke to fix a brake band to the yoke, the brake band encircling a brake drum of the caster in spiral, and
pressing the lever onto the yoke to press the spring and at least two of the anchoring points bear onto a support of the yoke, whereas the brake band releases around the brake drum and releasing of the brake drum enables free rotation of the caster.