Auxiliary door lock for a powered garage door
OwnerRandall S. Emoninventor
Life of this patent
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Abstract
One or more spring lock devices are included at the inner sides of a conventional garage door positioned to engage with the side door frame. The spring locks are actuated to the open position by operative connection, usually through tension lines to a garage door drive mechanism, which is connected to the garage door through a lost motion mechanism so that initial movement of the drive mechanism moves the spring lock devices and opens them before the garage door mechanism moves the garage door. For closing, the spring lock devices can be of the wedge striker type which will close and lock with the closing motion of the garage door or of a straight pin type, in which case the door is adjusted so that its balance mechanisms always biases the door toward the closed position when the door is near its closed position.
Claims7
A locking mechanism for a structure-mounted door having a power door-moving mechanism connected thereto by a drive link to provide opening and closing motion to the door, said mechanism including:
- at lest one locking device positioned to releasably secure the door in a closed position to the structure,
- locking device actuation means including:
- a linear lost motion mechanism positioned between the door and the drive link which allows a limited linear motion therebetween,
- means to sense said limited motion and to operatively connect said limited motion to said at least one locking device to open said locking device and release the structure from the door,
- said linear lost motion mechanism including:
- a bar member having:
- a pivot connected to the door, said bar member positioned to extend therefrom toward the drive, and
- a slot therein with an inner end positioned toward the door, and n outer end positioned toward the drive link, and
- a pair of fasteners connected to the drive link and extending through said slot, said fasteners being spaced from each other a distance less than the distance between said inner and outer ends of said slot so that said fasteners can allow said limited linear motion between the door and the drive link.
Dependencies are inferred from the claim text.