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AssigneeNone recorded
InventorsFrank Char, Huang Xiang Xiang, Liang Xiao Ming
Estimating the term…
A method and apparatus for providing a storm door with a mortise lock that includes a lock body having opposed side plates with a dead bolt assembly and a live bolt assembly intermediate the side plates wherein a key cylinder is separate from the cam. A thumb turn button and key cylinder are secured to opposite escutcheon plates and the cam is separately secured between the side plates of the mortise lock body. The key cylinder includes one or more key pins in the key cylinder housing and preferably in the decorative portion thereof. A spindle traverses from the key cylinder through the cam through hole and terminates in the mounting slot of the thumb turn button.
A key cylinder for a mortise lock in a storm door, the key cylinder comprising:
A method of installing a mortise lock in a storm door, the method comprising the steps of:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Backward citations are indexed for grants only.
Accessories in connection with locks: devices for coupling the turning cylinder of a single or a double cylinder lock with the bolt operating member
Fastening locks or fasteners or parts thereof, e.g. the casings of latch-bolt locks or cylinder locks to the wing: fastening of lock cylinders,…
Locks or fastenings with special structural characteristics: mortise locks
Lock casings or latch-mechanism casings ; Fastening locks or fasteners or parts thereof to the wing: casings of latch-bolt or deadbolt locks
Term end not estimated
1. Field of the Invention
The present invention generally relates to a storm door including a mortise lock and more specifically to a mortise lock for a storm door that includes a dead bolt lock with a separate key cylinder mounted on an escutcheon plate for easy installation.
2. Prior Art
Referring now to the drawings, wherein like reference numerals indicate corresponding structure throughout the several views.
FIG. 1 is a perspective view of a prior art key cylinder body.
FIG. 2 is a front top perspective view of a mortise lock according to the principles of the present invention.
The present invention will be described as it applies to its preferred embodiment. It is not intended that the present invention be limited to the described embodiment. It is intended that the invention cover all modifications and alternatives which may be included within the spirit and scope of the invention.
Referring now to the drawings, wherein like reference numerals and letters indicate corresponding structure throughout the several views, and referring in particular to FIGS. 2 and 3, there is shown a mortise lock 20 according to the present invention. The mortise lock 20 preferably includes a lock body 22, exterior escutcheon assembly 24 and interior escutcheon assembly 26. The exterior escutcheon assembly 24 has a handle 28 to actuate the live bolt assembly 30. The key cylinder 32, used to turn the dead bolt assembly 36, is also part of the exterior escutcheon assembly 24. The interior escutcheon assembly 26 also includes a handle 29 to actuate the live bolt assembly 30. A thumb turn button 34 is also provided to turn the dead bolt assembly 36. The live bolt assembly 30 and the dead bolt assembly 36 are secured to the lock body 22.
As is shown in FIGS. 4 through 6, the key cylinder 32 of the present invention is separate from and does not include the cam 58. By separating the key cylinder 32 from the cam 58, the cross-sectional profile of the key cylinder 32 can be minimized. As shown, the cross-sectional profile of the key cylinder 32 is generally circular. This allows for circular installation holes to be drilled by conventional methods using commonly available tools. Using commonly available tools reduces the overall time and corresponding costs needed to prepare the face of the storm door 18. A spindle 40 is rotatably secured to the key cylinder 32. The key pin or pins 44 are incorporated within the key cylinder housing 38 as shown in FIG. 4. Preferably, at least one pin 44 is included in the decorative portion 39 of the key cylinder housing 38. This allows the overall length of the key cylinder 32 to be kept to a minimum, thereby making the exposed portion of the key cylinder 32 more aesthetically pleasing. The key cylinder housing also includes one or more channels 46.