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A comment on Making and Selling a Stair-Climbing Dolly. Parent comment
When I heard the phrase "stair climbing dolly" I immedietly thought of the three wheels on an axle design.
My first search found this from 2007, but 1906 is just as good.
https://www.researchgate.net/publication/221786654_Climbing_...
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When I heard the phrase "stair climbing dolly" I immedietly thought of the three wheels on an axle design.
My first search found this from 2007, but 1906 is just as good.
https://www.researchgate.net/publication/221786654_Climbing_...