发明授权
- 专利标题： Door lifter construction
- 专利标题（中）： 升降机施工
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申请号： US899142申请日： 1978-04-24
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公开(公告)号： US4155145A公开(公告)日： 1979-05-22
- 发明人: Jack E. Gutridge , Eugene I. Varda
- 申请人： Jack E. Gutridge , Eugene I. Varda
- 申请人地址： IL Chicago
- 专利权人： Pullman Incorporated
- 当前专利权人： Pullman Incorporated
- 当前专利权人地址： IL Chicago
- 主分类号： A47H99/00
- IPC分类号： A47H99/00 ; A47H33/02
摘要：
A door lifter mechanism for a railway car door is operable by a handle which acts on two fulcrum bars. A fulcrum bar lifter roller is carried by the handle and supports the ends of the fulcrum bars, which are joined by a pivot spool received in slots in the fulcrum bars.
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