초록 ▼

A caster includes a U-shaped caster horn having a top web portion and two contiguous downwardly-extending leg portions to define a unitary, U-shaped member providing a wheel accommodating space. A wheel is rotatably supported in the space such that the caster horn partially covers the wheel, The cas

A caster includes a U-shaped caster horn having a top web portion and two contiguous downwardly-extending leg portions to define a unitary, U-shaped member providing a wheel accommodating space. A wheel is rotatably supported in the space such that the caster horn partially covers the wheel, The caster horn features a fouling-resistant bearing cup integrally formed thereon for receiving and retaining a bearing assembly, which secures one end of an structure-supporting stem. A swivel cap with a hole formed in the center thereof is placed over the cup while allowing an opposite end of the stem to protrude therethrough. A brake mechanism supported by the caster horn may be operated to inhibit or prevent rotation of the wheel.

대표청구항 ▼

A caster, comprising: a unitary U-shaped caster horn having a web portion and a pair of downwardly-extending, opposed leg portions, and having a bearing cup formed on a top surface of said caster horn, said bearing cup being defined by an annular wall portion and a closed bottom portion, said wall p

A caster, comprising: a unitary U-shaped caster horn having a web portion and a pair of downwardly-extending, opposed leg portions, and having a bearing cup formed on a top surface of said caster horn, said bearing cup being defined by an annular wall portion and a closed bottom portion, said wall portion and said bottom portion being continuous with each other; a bearing disposed in said bearing cup; a stem having one end fitted into said bearing and being rotatably supported by said bearing; a cap having a centrally-located hole formed on a top surface thereof and disposed in a snug-fitting relationship with said stem and being removably mounted on said bearing cup such that said stem extends through said hole, wherein said cap covers an opening of said bearing cup and substantially overlaps an exterior side wall surface of said annular wall portion to restrict ingress of foreign matter into said bearing cup; and a wheel rotatably supported between said leg portions such that said caster horn partially surrounds said wheel.