Natural ice rink mould
    32.
    发明授权
    Natural ice rink mould 失效
    自然冰激淋模具

    公开(公告)号:US3721418A

    公开(公告)日:1973-03-20

    申请号:US3721418D

    申请日:1970-02-25

    申请人: VINCENT E

    发明人: VINCENT E

    IPC分类号: E01C13/10 B28B7/34

    CPC分类号: E01C13/102

    摘要: A ''''one-shot'''' mould for forming natural ice rinks is provided. It includes a pair of sheets of synthetic thermoplastic material, e.g. polyethylene, whose peripheral edges are sealed together. The bottom of the two sheets is water-tight and can conform to the shape of an irregular surface. The top has a water inlet aperture, and preferably also more holes to permit the escape of entrapped air as water fills the enclosure.

    Ice skating rink
    33.
    发明授权
    Ice skating rink 失效
    冰山滑雪

    公开(公告)号:US3641782A

    公开(公告)日:1972-02-15

    申请号:US3641782D

    申请日:1970-06-01

    发明人: TIMMS RAYFORD W

    IPC分类号: E01C13/10 F25C3/02 F25D17/00

    CPC分类号: F25C3/02 E01C13/105

    摘要: An improved ice skating rink utilizing a refrigerated gas as a means for freezing and keeping frozen a surface which may be utilized for ice skating. The refrigerated gas is supplied to a plenum which is disposed beneath the skating surface.

    摘要翻译: 改进的溜冰场使用冷藏气体作为冷冻和保持冷冻表面的手段,可用于溜冰。 冷藏气体被供给到设置在滑冰表面下方的集气室。