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US 4,529,219 AGranted
Foldable baby carriage with security lock
OwnerLouis Shamieinventor
Life of this patent
Estimating the term…
Abstract
A foldable carriage with security 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 a pivotally mounted latch which can engage a pin on another one of the members to hold the carriage in its open unfolded position. The latch is provided with a locking element which engages the other member so that the latch cannot be rotated to disengage the pin, unless the locking element is purposely retracted.
Claims14
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 movable between a first 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 portions of said first and cross members spaced from each other, said cross member moving in a closing direction with movement from said open to said closed position;
- a latch pivotally connected to one of said first and cross members at said portion thereof;
- engagment means connected to the other of said first and cross members adjacent said portion thereof, engaged with said latch to hold said first, second and cross members in said open position, and disengaged from said engagement means in said closed position;
- a locking element movably mounted to said latch and having a first position engaging said portion of said other of said first and cross members to prevent movement of said cross member in said closing direction to prevent movement from said open to said closed position, said locking element having a second position disengaged from said portion of said other of said first and cross members;
- biasing means connected to said locking element for biasing said locking element toward said first position thereof;
- and
- an actuator connected to said locking element for moving said locking element from said first to said second position thereof against the bias of said biasing means to permit movement from said open to said closed position.
7 more elements
A lock arrangement comprising:
- a sleeve having an inclined surface at one end thereof and an opposite end;
- a locking pin slidably mounted in said sleeve having an end movable out of said opposite end of said sleeve;
- biasing means engaged between said sleeve and said locking pin for biasing said locking pin out of said opposite end of said sleeve;
- a positioning head connected to said locking pin on a side of said sleeve adjacent said inclined surface, said head including a further inclined surface shaped to mate with said inclined surface of said sleeve, said positioning head with connected locking pin being rotatable and axially movable with respect to said sleeve for mating and mis-mating said inclined surfaces, said locking pin being pulled against a bias of said biasing means when said inclined surfaces are mis-mated by rotation of said positioning head with respect to said sleeve;
- and
- means for establishing a quasi-stable position with said inclined surfaces mis-mated so that only slight rotational force on said positioning head will cause said positioning head and locking pin to rotate to bring said inclined surfaces into a mating position.
3 more elements
Dependencies are inferred from the claim text.