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US 5,394,962 AGranted
Braking devices
OwnerAndrew P. Grayinventor
Life of this patent
Estimating the term…
Abstract
A braking device for a wheeled vehicle such as a cart or trolley includes a braking member which can contact the ground and lift the vehicle to impede further movement thereof, a blocking member which can block the braking member to prevent its contact with the ground, and a trigger which is actuated by a magnet in the ground to release the blocking member and its blocking relationship with the braking member.
Claims10
A braking apparatus attachable to a vehicle which moves along a surface, said braking apparatus comprising:
- a first portion which is attachable to said vehicle,
- a second portion which is operatively connected to said first portion and is pivotally mounted to move relative to said first portion between an inoperative position and an operative position, said second portion, when in said operative position, causing said first portion to be moved away from said surface to thereby brake movement of said vehicle along said surface,
- blocking means which is movable from a first position associated with said second portion to prevent movement of said second portion from said inoperative to said operative position, and a second position permitting movement of said second portion to said operative position, and
- trigger means pivotally mounted on the first portion for holding said blocking means in said first position and for releasing said blocking means to allow said blocking means to move from said first position to said second position upon passage of said trigger means over a magnet in said surface.
1 more element
A vehicle which is movable along a surface, said vehicle including a braking apparatus comprising:
- a first portion which is attachable to said vehicle,
- a second portion which is operatively connected to said first portion and is pivotally mounted to move relative to said first portion between an inoperative position and an operative position, said second portion, when in said operative position, causing said first portion to be moved away from said surface to thereby brake movement of said vehicle along said surface,
- blocking means which is movable from a first position associated with said second portion to prevent movement of said second portion from said inoperative to said operative position, and a second position permitting movement of said second portion to said operative position, and
- trigger means pivotally mounted on the first portion for holding said blocking means in said first position and for releasing said blocking means to allow said blocking means to move from said first position to said second position upon passage of said trigger means over a magnet in said surface.
1 more element
Dependencies are inferred from the claim text.