| 摘要 |
1471989 Castors GLOBAL CASTORS & HARDWARE Ltd 23 May 1975 [8 Aug 1974] 34907/74 Heading A4U A castor comprises a body 1 pivotally mounted about a vertical axis 13 and moulded with an integral boss 4, a wheel 2 rotatably mounted on body 1 about an offset inclined axis 3 and formed with an integral boss 5 having an external peripheral groove 16, boss 4 engaging within boss 5 to rotatably mount the wheel 2, and a vertical spindle 11 located in a bore 12 in body 1 and engaging in the groove 16 to locate the wheel axially of the body. The spindle being a snap-fit in bore 12. The spindle may also be a snap-fit in a fixing ferrule 21, or it may be directly fixed to the article to be supported. |
