发明授权
- 专利标题： Ice skating rink
- 专利标题（中）： 冰山滑雪
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申请号： US3641782D申请日： 1970-06-01
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公开(公告)号： US3641782A公开(公告)日： 1972-02-15
- 发明人: TIMMS RAYFORD W
- 申请人： AMERICAN AIR FILTER CO
- 专利权人： American Air Filter Co
- 当前专利权人： American Air Filter Co
- 优先权： US4186270 1970-06-01
- 主分类号： E01C13/10
- IPC分类号： E01C13/10 ; F25C3/02 ; F25D17/00
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.
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