Safety brake type rollator
作者： Larry M. Cheng
DOI:
关键词:
摘要: A safety brake type rollator which is normally in detained state, but it starts to advance when releasing grips installed on both handle bars are gripped, disclosed. The elaborate utilization of lever principle associated with power transmission between two ratchet wheels realizes innovative effect the present invention.
lens.org 参考文章(7)
Christopher L. Arena, Robert L. Prior, Disabled shopping cart attachment ,(1986)
Dwight L. Mayo, Fritz A. Deutsch, Safety rolling invalid walker ,(1980)
Eric Paul Rose, Foldable rolling walker ,(1987)
A Smith, Foldable invalid walker ,(1972)
Daniel Lee, Front frame lifter for a walking supporter ,(1994)
Charles C. Kent, Wheeled walking device ,(1986)
Vida E Kirkpatrick, Walking-aid apparatus ,(1956)