发明名称 Swivel wheel assembly
摘要 A swivel wheel assembly which is easy to assemble and convenient for use includes a tube plug inserted into a tube leg, a pivot pin inserted into the tube plug and a rotary member rotatably secured on the pin. The rotary member supports a shaft and pair of wheels. By using a hard material for the pin, a softer material for the rotary member and a still softer material for the tube plug, friction is reduced. The plug, pin and rotary member are assembled without the use of fasteners. The rotary member includes a resilient flexible member with a key received in a circumferential groove of the pivot pin.
申请公布号 US5408723(A) 申请公布日期 1995.04.25
申请号 US19940176495 申请日期 1994.01.03
申请人 GRACO CHILDREN'S PRODUCTS, INC. 发明人 JULIEN, CHRISTINE E.;SIESHOLTZ, DEVON T.
分类号 B60B33/00;(IPC1-7):B60B33/00 主分类号 B60B33/00
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