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Rotary High Lifter and Controlled Descender
专利权人:
Cahill Russell Jeffrey
发明人:
Cahill Russell Jeffrey
申请号:
US201816029513
公开号:
US2018320814(A1)
申请日:
2018.07.06
申请国别(地区):
美国
年份:
2018
代理人:
摘要:
A rotary high lifter and controlled descender has a main housing enclosing a ratchet spool, controlled descender, and locking pawl. An adjustable crank turns the ratchet spool and takes up rope which raises an attached feeder, nestbox, etc. The locking pawl assures that as the rope is wound, the lifter/descender automatically locks in place so that an inadvertent crank release of the crank does not cause the feeder to fall. The rope exits the main housing via an inlet nipple which protects the housing from the elements, insects, etc. To lower the feeder, actuate a cam lock to release the locking pawl, and turn the crank in the opposite direction. Releasing the cam lock can actuate a controlled descender portion of the invention. These components apply a brake-pad-like action against the ratchet spool (can also use a tension knob) to control the speed of rotation and descent.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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