发明名称 Spring protection device and spring drive unit including spring protection device
摘要 <p>The invention relates to spring protection device (1) for a spring drive unit (2) and adapted to surround a spring (3; 4) of the spring drive unit, the protection device comprising a frame plate (7), against which a first end (8) of the spring rests, and the frame plate being provided with an opening passage (22) for a pullrod (5; 6) connected to the spring (3; 4). The spring protection device comprises bars (10) with first end parts (15) that are connected to the frame plate (7), externally of the first end (8) of the spring, and which bars (10) are arranged to extend externally of and along the sides of the spring (3; 4) and externally of a second end (9) of the spring, thereby forming an open cage surrounding the spring. The invention also relates to a spring drive unit comprising a spring protection device.</p>
申请公布号 EP2075812(A1) 申请公布日期 2009.07.01
申请号 EP20070124146 申请日期 2007.12.28
申请人 ABB TECHNOLOGY LTD 发明人 WESTFAELT, MATS;HOLMAN, MATS;JACOBSSON, STAFFAN
分类号 H01H3/30 主分类号 H01H3/30
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