초록 ▼

A foldable carriage with double lock includes a plurality of members which are pivotally connected to each other and can be folded from an open to a closed position. One of the members includes one pivotally mounted latch which can engage a pin on another one of the members to hold the carriage in i

A foldable carriage with double lock includes a plurality of members which are pivotally connected to each other and can be folded from an open to a closed position. One of the members includes one pivotally mounted latch which can engage a pin on another one of the members to hold the carriage in its open unfolded position. Another latch with a holding mechanism is engaged between other members to hold the carriage in its open position. To close the carriage, this latch is pivoted and held in an unlocked position by its holding mechanism so that the first latch can be moved to fold the carriage. A multi-purpose plastic bearing block is also used to connect various parts of the frame.

대표청구항 ▼

A carriage having a foldable frame and lock combination, comprising: a first frame member; a second frame member; a cross member pivotally connected to said first and second frame members at pivotal connections therewith; said first, second and cross members being movable between an open position wi

A carriage having a foldable frame and lock combination, comprising: a first frame member; a second frame member; a cross member pivotally connected to said first and second frame members at pivotal connections therewith; said first, second and cross members being movable between an open position with said first and second members spaced from each other and with a portion of said cross member disposed adjacent a portion of said first member which is spaced from the pivotal connection between said first and cross members, and a closed position with said first and second members disposed adjacent each other and said portion of said first cross members spaced from each other, said cross member moving in a closing direction, with movement from said open to said closed position; a first latch pivotally connected to one of said first and second frame members; first engagement means connected to the other of said first and second frame members and engaged with said first latch to hold said first, second and cross members in said open position, and disengageable from said first engagement means in said closed position; holding means for holding said first latch in a position out of engagement with said first engagement means; a second latch pivotally connected to one of said first and cross members at said portions thereof; second engagement means connected to the other of said first and cross members adjacent said portion thereof, engaged with said second latch to hold said first, second and cross members in said open position, and disengaged from said second engagement means in said closed position; first biasing means connected to said first latch for biasing said first latch into a position of engagement with said engagement means; and second biasing means connected to said second latch for biasing said second latch into a position for engagement with said second engagement means; wherein, when said first, second and cross members are moved from said open position to said closed position, said first latch is pivoted against said first biasing means into engagement with said holding means for holding said first latch away from said first engagement means, and thereafter said second latch is pivoted against said second biasing means out of engagement with said second engagement means for permitting movement of said first, second and cross members into said closed position.