Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Douglas G. Robins0
Date of Patent
April 6, 2021
0Patent Application Number
159732230
Date Filed
May 7, 2018
0Patent Citations
Patent Citations Received
Patent Primary Examiner
Patent abstract
A conveyance to carry humans, such as a wheelchair, is described having levers on each side of the wheelchair that are manually moved forward and backward to propel the conveyance. The levers are connected to a tooth clutch mechanism that allow the user to shift into forward, reverse or neutral, brake, and change mechanical advantage (gear ratio), all this without removing the user's hands from the drive levers.
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