- 专利标题: Hydraulic door closer with fluid overflow chamber
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申请号: US16532159申请日: 2019-08-05
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公开(公告)号: US11105135B2公开(公告)日: 2021-08-31
- 发明人: Michael W. Kondratuk
- 申请人: Larson Manufacturing Company of South Dakota, Inc.
- 申请人地址: US SD Brookings
- 专利权人: Larson Manufacturing Company of South Dakota, Inc.
- 当前专利权人: Larson Manufacturing Company of South Dakota, Inc.
- 当前专利权人地址: US SD Brookings
- 代理机构: Kagan Binder, PLLC
- 主分类号: E05F3/10
- IPC分类号: E05F3/10 ; E05F3/12
摘要:
This disclosure is generally directed to a hydraulic door closer, and more specifically is directed to a hydraulic storm or screen door closer that has a fluid overflow chamber providing fluid volume and pressure control for both expanded and contracted fluid at different temperatures. The disclosed hydraulic door closer comprises a fluid overflow chamber adapted to hold sufficient fluid to maintain required operating fluid or oil levels at different temperatures, and to ensure proper closer performance under both extreme high and low temperature conditions.
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