door closer

[′dȯr ‚klōz·ər] (design engineering) A device that makes use of a spring for closing, and a compression chamber from which liquid or air escapes slowly, to close a door at a controlled speed. Also known as door check. In elevators, a device or assembly of devices which closes an open car or hoistway door by the use of gravity or springs.

door closer

door closer, 1 1. A device combining a spring for closing and a compression chamber into which liquid or air escapes slowly, thus providing a

单词	door closer
释义	door closer door closer [′dȯr ‚klōz·ər] (design engineering) A device that makes use of a spring for closing, and a compression chamber from which liquid or air escapes slowly, to close a door at a controlled speed. Also known as door check. In elevators, a device or assembly of devices which closes an open car or hoistway door by the use of gravity or springs. door closer door closer, 1 1. A device combining a spring for closing and a compression chamber into which liquid or air escapes slowly, thus providing a
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