| 摘要 |
<p>SHOCK ABSORBER FOR SWIVEL CASTER A device for use with a bearing construction for a swivel caster mountable on a caster mounting plate and including a yoke having a swivel plate pivotal about a pivot axis. A securing device is provided for securing the yoke to the caster mounting plate. The bearing construction is composed of a ball bearing retaining structure which normally abuts against the underside of the caster mounting plate. An elastomeric member is mounted between the bearing construction and the caster mounting plate. The elastomeric member has a compressible characteristic sufficient to maintain the caster firmly connected to the mounting plate while simultaneously being capable of yielding to a sufficiently large force applied to the yoke to permit a relative movement between the mounting plate and the yoke to thereby prevent permanent deformation to the yoke when an abnormally high force is applied thereto. The securing device includes structure for limiting the initial compression of the elastomeric member between the bearing construction and the mounting plate. CROSS REFERENCE TO RELATED SUBJECTS This application is related to Canadian Patent No. 744 090.</p> |
