| 摘要 |
A bowling alley bumper system including a pair of retractable bumper assemblies for use with a bowling lane to prevent bowling balls from entering either gutter when the retractable bumper assemblies are deployed, each retractable bumper assembly comprises an elongated retractable rail selectively movable between a retracted position and a deployed position disposed between one side of the bowling lane and the corresponding gutter such that when either elongated retractable rail is in the retracted position a bowling ball can enter the corresponding gutter and when either elongated retractable rail is in the deployed position a bowling ball is prevented from entering the corresponding gutter.
|
