LATCH SYSTEM
First Claim
1. A latch system comprising:
- a latch bolt;
a pawl for releasably retaining the latch bolt in a closed position;
a first release member;
a first transmission path connecting the first release member to the pawl;
a second release member;
a second transmission path connecting the second release member to the pawl, wherein a portion of the first transmission path and a portion of the second transmission path have a common portion, the common portion including a lock link having a first position at which the lock link completes the first transmission path and the second transmission path such that operation of either the first release member or the second release member opens a latch, and the lock link having a second position at which the lock link breaks the first transmission path and the second transmission path such that a single operation of either the first release member or the second release member does not open the latch;
a first device capable of holding the lock link in the second position;
a second device capable of holding the lock link in the second position; and
a third device capable of holding the lock link in the second position.
4 Assignments
0 Petitions
Accused Products
Abstract
A latch system includes a latch bolt, a pawl for releasably retaining the latch bolt in a closed position, a first release member, a first transmission path connecting the first release member to the pawl, a second release member, and a second transmission path connecting the second release member to the pawl. A portion of the first transmission path and a portion of the second transmission path have a common portion, the common portion including a lock link having a first position at which the lock link completes the first transmission path and the second transmission path such that operation of either the first release member or the second release member opens a latch, and the lock link having a second position at which the lock link breaks the first transmission path and the second transmission path such that a single operation of either the first release member or the second release member does not open the latch. The latch system includes a first device capable of holding the lock link in the second position, a second device capable of holding the lock link in the second position, and a third device capable of holding the lock link in the second position.
42 Citations
18 Claims
-
1. A latch system comprising:
-
a latch bolt; a pawl for releasably retaining the latch bolt in a closed position; a first release member; a first transmission path connecting the first release member to the pawl; a second release member; a second transmission path connecting the second release member to the pawl, wherein a portion of the first transmission path and a portion of the second transmission path have a common portion, the common portion including a lock link having a first position at which the lock link completes the first transmission path and the second transmission path such that operation of either the first release member or the second release member opens a latch, and the lock link having a second position at which the lock link breaks the first transmission path and the second transmission path such that a single operation of either the first release member or the second release member does not open the latch; a first device capable of holding the lock link in the second position; a second device capable of holding the lock link in the second position; and a third device capable of holding the lock link in the second position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A latch system comprising:
-
a latch bolt; a pawl for releasably retaining the latch bolt in a closed position; a first release member; a first transmission path connecting the first release member to the pawl; a second release member; a second transmission path connecting the second release member to the pawl, wherein a portion of the first transmission path and a portion of the second transmission path have a common portion, the common portion including a lock link having a first position at which the lock link completes the first transmission path and the second transmission path such that operation of either the first release member or the second release member opens a latch, and the lock link having a second position at which the lock link breaks the first transmission path and the second transmission path such that a single operation of either the first release member or the second release member does not open the latch; a device capable of holding the lock link in the second position, wherein the lock link is moveable between the first position and the second position by a first control member, the first control member is moveable by a second control member, and the device acts on the second control member to hold the lock link in the second position; and a resilient device that acts to bias the lock link to the first position.
-
-
18. A latch system comprising:
-
a latch bolt; a pawl for releasably retaining the latch bolt in a closed position; a first release member; a first transmission path connecting the first release member to the pawl; a second release member; a second transmission path connecting the second release member to the pawl; a portion of the first transmission path and a portion of the second transmission path have a common portion, the common portion including a lock link having a first position at which the lock link completes the first transmission path and the second transmission path such that operation of either the first release member or the second release member opens a latch, and the lock link having a second position at which the lock link breaks the first transmission path and the second transmission path such that a single operation of either the first release member or the second release member does not open the latch; a device capable of holding the lock link in the second position; and a motor operable to unlatch the latch, wherein during power opening of the latch, the motor causes the device to free the lock link for movement to the first position, and the motor is capable of moving the device to a position such that the lock link is retained in the second position.
-
Specification