CA1225415A - High security door strike - Google Patents
High security door strikeInfo
- Publication number
- CA1225415A CA1225415A CA000450537A CA450537A CA1225415A CA 1225415 A CA1225415 A CA 1225415A CA 000450537 A CA000450537 A CA 000450537A CA 450537 A CA450537 A CA 450537A CA 1225415 A CA1225415 A CA 1225415A
- Authority
- CA
- Canada
- Prior art keywords
- jamb
- door
- strike
- latch mechanism
- landing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Door And Window Frames Mounted To Openings (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A door strike for reinforcing a door jamb against forced entry has a stepped body which is designed to conform to the contour of the door jamb. When the door strike is mounted, a first planar platelike landing portion of the body is positioned against the edge margin of the jamb. This first landing portion defines a latch mechanism receiving opening though which a door mounted deadbolt or latch when the door is closed and locked. A
second planar platelike landing portion of the body is positioned against a central region of the jamb when the door strike is mounted. In addition, an anchor rod projects rearwardly from this second landing portion, through the jamb, and into the center of studs which form the rough door opening so as to reinforce the jamb against forced entry.
A door strike for reinforcing a door jamb against forced entry has a stepped body which is designed to conform to the contour of the door jamb. When the door strike is mounted, a first planar platelike landing portion of the body is positioned against the edge margin of the jamb. This first landing portion defines a latch mechanism receiving opening though which a door mounted deadbolt or latch when the door is closed and locked. A
second planar platelike landing portion of the body is positioned against a central region of the jamb when the door strike is mounted. In addition, an anchor rod projects rearwardly from this second landing portion, through the jamb, and into the center of studs which form the rough door opening so as to reinforce the jamb against forced entry.
Description
~L2~
HIG~I SECURITY DOOR STRIKE
The present invention relates to a door strike which reinforces a door jamb to resist forced entry through the door.
A typical door lock assembly includes a strike plate recessed into the facing of a door jamb, along one marginal edge of the jamb. A deadbolt or handle-actuated latch carried by the door engages the strike plate and holds the door closed. ~ith this construction, in many instances it is possible for a person to force open the door by simply throwing his weight against the door or hy using a crowbar to splinter the jamb. Thus, forced entry to the interior of a building is relatively easy.
One prior art attempt which addresses this problem is shown in U.S. Patent No. 4,186,954 of Detlefs.
In Detlefs, a door strike includes a plate to which a deadbolt receiving housing is attached. A brace extends rearwardly from the housing. The Detlefs device is unsatisfactory because, when installed, the bolt housing is positioned near -the marginal edge of the jamb so that it is aligned with the door deadbolt or latch when the door is closed. As a result, the brace of this device either misses the studs adjacent the door opening entirely or, at most, catches only the outer edge of the studs.
Consequently, even with the device of Detlefs installed, it is still relatively easy to force open the door.
Still another door reinforcing strike is shown in .S. Patent No. 4,005,890 of Murch. This device comprises a metal bar with a panel at one end which is disposed along one side of a deadbolt receiving strike pocket when the device is mounted. The other end of the bar is an ~225~
offset leg, which is driven into frame members of the rough door frame. The offset leg of Murch is relatively close to the edge of the frame member, resulting in a reduced reinforcing effect.
Another prior art door strike is shown in U.S.
Patent 4,189,175 of Paxton. The strike of Paxton includes a relatively large cylindrical disk-like body with a projecting hollow cylindrical tang. The tang is designed to extend into the studs surrounding the rough door 1~ opening. However, the Paxton strike is of a relatively complex shape and is also relatively difficult to install. For example, a circular, hole-boring tool of the size of the cylindrical body would typically be required to install the Paxton strike.
Therefore, a need exists for an improved, high security door strike which is easy to install and which provides enhanced reinforcement for the door jamb of a door.
The present invention comprises a high security door strike having a body which is stepped to conform to the contour of a door jamb. The body includes a first planar platelike landing portion through which a door latch mechanism receiving opening is defined. This first landing portion abuts the deadbolt or latch receiving portion of the jamb when the door strike is mounted. In addition, the body includes a second planar platelike landing portion which abuts a central portion of the jamb when the door strike is mounted. An anchor projects rearwardly from this second landing portion, through the jamb, and into a central region of a stud surrounding the rough door opening. Thus, the door strike reinforces the jamb against forced entry.
~22~
It is a primary object of the invention to provide an improved door strike with enhanced jamb reinforcing capabilities.
Another object of the invention is to provide a high security door strike which can easily be incorporated in new installations, as well as be retrofitted into older installations.
A fuxthér object of the invention is to provide a high security door strike which is easy to manufacture.
Another object of the invention is to provide a high security door strike which is simple to install, without requiring any specialized tools.
Still another object of the invention is to provide a high security door striXe which makes door locks more protective and durable.
other objects, features, and advantages of the invention will become more apparent with reference to the following d~scription and drawings.
Fig. 1 is a front perspective view of a high security door strike in accordance with the invention which has been installed;
Fig. 2 is a cross-sectional view of the high security door strike of Fig. 1, taken along lines 2-2 of Fig. l; and Fig. 3 is a rear perspective view of a high security door strike in accordance with the invention.
With reference to Fig. 1, a high security door strike in accordance with the invention includes a body lO
having a first landing portion 12, a second landing por-tion 14, and a central or web portion 16 interconnectingthe landing porticns. In the illustrated embodiment, body lO is formed of a rigid sheet material, such as 14-gauge steel, so that it is strong and durable. Thus, landing portion 12 comprises a planar platelike flange projectiny in one direction from the outer maryin of the central web 16 while landing portion 14 comprises a planar platelike flange projecting in the opposite direction from the other marginal edge of central web 160 With this construction, the landing portions 12, 14 are offset from, and generally parallel to, one another.
A deadbolt or other door latch mechanism receiving opening 18 extends through the landing 12 for purposes explained below. In addition, an anchor, such as a rod 20, projects rearwardly from the backside of landing 14. Typically, rod 20 is welded to a central region of the landing 14 so that the entire door strike, including the rod, is both rigid and durable. Plural fastener receiving openings 22 are provided through the landings 12, 14. Screws or other fasteners 23 pass through these openings and secure the strike to a door jamb.
With reference to Fig. 2, the high security door strike of the invention is shown mounted to a typical door jamb 24. In this standard building environment, the jamb 24 is mounted within a rough door opening. The door opening is bounded by an upright, relatively short wooden member 26, called a cripple stud. An adjacent, relatively long, upright, wooden stud 28 backs the cripple stud. A
wooden spacer or shim 29 is typically used to fill the void between the jamb and cripple stud. Sheet rock or other wall covering material is mounted on the interior side of the studs, while sheeting 32 and siding 34 are mounted to the exterior side of the studs. Molding pieces 36 cover the ioint between the jamb and respective adja-cent sheet rock and siding for a more finished appearance.
The high security door strike of the invention is t~pically recessed into the jamb as shown in Fig. 2. A
hole is drilled through a central portion of the jamb, a central portion of the cripple stud 25 and stud 28 for receiving the rod 20 when the door strike is mounted.
Also, as can be seen in Fig. 2, the strike i9 shaped to conform to the contour of the jamb.
A door 38 is provided in the door opening and is shown in a closed position in Fig. 2. When in this position, a deadbolt or other latch mechanism 40 extends through the opening 1~ of landing 12 and into a pocket provided in the jamb. A lock actuator 42, or handle, is provided for actuating the deadbolt 40 to remove it from the pocket. This permits the door to be opened by moving it in the direction of arrow 44.
Assuming that the door comprises an exterior door, someone attempting forced entry through the door would push on the door in the direction of arrow 44. As can be seen in ~ig. 2, the rod 20 resists forces applied in this direction and, together with the bod~ 10, protects the jamb from splintering. This minimizes the chance of forced entry through the door. More specifically, for enhanced reinforcement, the rod 20 is positioned to extend through a central portion of the jamb and cripple stud 26. In fact, a major portion of the stud, as indicated by the width "W", remains between the rod 20 and the edge of the stud adjacent the door latching mechanism. Thus, it is extremely difficult to force open a door to which a high security door strike in accordance with the invention has been mounted.
Having illustrated and described the principles of my invention with reference to one preferred embodi-ment, it should be apparent to those persons skilled in the art that such invention may be modified in arrangement and detail without departing from such principles. I
claim as my invention all such modifications as come within th~ true spirit and scope of the following claims.
HIG~I SECURITY DOOR STRIKE
The present invention relates to a door strike which reinforces a door jamb to resist forced entry through the door.
A typical door lock assembly includes a strike plate recessed into the facing of a door jamb, along one marginal edge of the jamb. A deadbolt or handle-actuated latch carried by the door engages the strike plate and holds the door closed. ~ith this construction, in many instances it is possible for a person to force open the door by simply throwing his weight against the door or hy using a crowbar to splinter the jamb. Thus, forced entry to the interior of a building is relatively easy.
One prior art attempt which addresses this problem is shown in U.S. Patent No. 4,186,954 of Detlefs.
In Detlefs, a door strike includes a plate to which a deadbolt receiving housing is attached. A brace extends rearwardly from the housing. The Detlefs device is unsatisfactory because, when installed, the bolt housing is positioned near -the marginal edge of the jamb so that it is aligned with the door deadbolt or latch when the door is closed. As a result, the brace of this device either misses the studs adjacent the door opening entirely or, at most, catches only the outer edge of the studs.
Consequently, even with the device of Detlefs installed, it is still relatively easy to force open the door.
Still another door reinforcing strike is shown in .S. Patent No. 4,005,890 of Murch. This device comprises a metal bar with a panel at one end which is disposed along one side of a deadbolt receiving strike pocket when the device is mounted. The other end of the bar is an ~225~
offset leg, which is driven into frame members of the rough door frame. The offset leg of Murch is relatively close to the edge of the frame member, resulting in a reduced reinforcing effect.
Another prior art door strike is shown in U.S.
Patent 4,189,175 of Paxton. The strike of Paxton includes a relatively large cylindrical disk-like body with a projecting hollow cylindrical tang. The tang is designed to extend into the studs surrounding the rough door 1~ opening. However, the Paxton strike is of a relatively complex shape and is also relatively difficult to install. For example, a circular, hole-boring tool of the size of the cylindrical body would typically be required to install the Paxton strike.
Therefore, a need exists for an improved, high security door strike which is easy to install and which provides enhanced reinforcement for the door jamb of a door.
The present invention comprises a high security door strike having a body which is stepped to conform to the contour of a door jamb. The body includes a first planar platelike landing portion through which a door latch mechanism receiving opening is defined. This first landing portion abuts the deadbolt or latch receiving portion of the jamb when the door strike is mounted. In addition, the body includes a second planar platelike landing portion which abuts a central portion of the jamb when the door strike is mounted. An anchor projects rearwardly from this second landing portion, through the jamb, and into a central region of a stud surrounding the rough door opening. Thus, the door strike reinforces the jamb against forced entry.
~22~
It is a primary object of the invention to provide an improved door strike with enhanced jamb reinforcing capabilities.
Another object of the invention is to provide a high security door strike which can easily be incorporated in new installations, as well as be retrofitted into older installations.
A fuxthér object of the invention is to provide a high security door strike which is easy to manufacture.
Another object of the invention is to provide a high security door strike which is simple to install, without requiring any specialized tools.
Still another object of the invention is to provide a high security door striXe which makes door locks more protective and durable.
other objects, features, and advantages of the invention will become more apparent with reference to the following d~scription and drawings.
Fig. 1 is a front perspective view of a high security door strike in accordance with the invention which has been installed;
Fig. 2 is a cross-sectional view of the high security door strike of Fig. 1, taken along lines 2-2 of Fig. l; and Fig. 3 is a rear perspective view of a high security door strike in accordance with the invention.
With reference to Fig. 1, a high security door strike in accordance with the invention includes a body lO
having a first landing portion 12, a second landing por-tion 14, and a central or web portion 16 interconnectingthe landing porticns. In the illustrated embodiment, body lO is formed of a rigid sheet material, such as 14-gauge steel, so that it is strong and durable. Thus, landing portion 12 comprises a planar platelike flange projectiny in one direction from the outer maryin of the central web 16 while landing portion 14 comprises a planar platelike flange projecting in the opposite direction from the other marginal edge of central web 160 With this construction, the landing portions 12, 14 are offset from, and generally parallel to, one another.
A deadbolt or other door latch mechanism receiving opening 18 extends through the landing 12 for purposes explained below. In addition, an anchor, such as a rod 20, projects rearwardly from the backside of landing 14. Typically, rod 20 is welded to a central region of the landing 14 so that the entire door strike, including the rod, is both rigid and durable. Plural fastener receiving openings 22 are provided through the landings 12, 14. Screws or other fasteners 23 pass through these openings and secure the strike to a door jamb.
With reference to Fig. 2, the high security door strike of the invention is shown mounted to a typical door jamb 24. In this standard building environment, the jamb 24 is mounted within a rough door opening. The door opening is bounded by an upright, relatively short wooden member 26, called a cripple stud. An adjacent, relatively long, upright, wooden stud 28 backs the cripple stud. A
wooden spacer or shim 29 is typically used to fill the void between the jamb and cripple stud. Sheet rock or other wall covering material is mounted on the interior side of the studs, while sheeting 32 and siding 34 are mounted to the exterior side of the studs. Molding pieces 36 cover the ioint between the jamb and respective adja-cent sheet rock and siding for a more finished appearance.
The high security door strike of the invention is t~pically recessed into the jamb as shown in Fig. 2. A
hole is drilled through a central portion of the jamb, a central portion of the cripple stud 25 and stud 28 for receiving the rod 20 when the door strike is mounted.
Also, as can be seen in Fig. 2, the strike i9 shaped to conform to the contour of the jamb.
A door 38 is provided in the door opening and is shown in a closed position in Fig. 2. When in this position, a deadbolt or other latch mechanism 40 extends through the opening 1~ of landing 12 and into a pocket provided in the jamb. A lock actuator 42, or handle, is provided for actuating the deadbolt 40 to remove it from the pocket. This permits the door to be opened by moving it in the direction of arrow 44.
Assuming that the door comprises an exterior door, someone attempting forced entry through the door would push on the door in the direction of arrow 44. As can be seen in ~ig. 2, the rod 20 resists forces applied in this direction and, together with the bod~ 10, protects the jamb from splintering. This minimizes the chance of forced entry through the door. More specifically, for enhanced reinforcement, the rod 20 is positioned to extend through a central portion of the jamb and cripple stud 26. In fact, a major portion of the stud, as indicated by the width "W", remains between the rod 20 and the edge of the stud adjacent the door latching mechanism. Thus, it is extremely difficult to force open a door to which a high security door strike in accordance with the invention has been mounted.
Having illustrated and described the principles of my invention with reference to one preferred embodi-ment, it should be apparent to those persons skilled in the art that such invention may be modified in arrangement and detail without departing from such principles. I
claim as my invention all such modifications as come within th~ true spirit and scope of the following claims.
Claims (6)
1. A high security door strike for a door jamb comprising: a stepped body with first and second plural platelike landing portions; said first landing portion defining a door latch mechanism receiving opening; and anchor means projecting rearwardly of said second landing portion.
2. A door strike according to claim 1 in which said anchor means comprises an anchor rod rigidly mounted to said second landing portion.
3. A door strike according to claim 1 in which said body is formed of rigid sheet material.
4. A door strike according to claim 3 in which said first and second landing portions are each generally rectangular.
5. A high security door strike for a door jamb, the jamb having a latch mechanism receiving portion adjacent one edge thereof and being mounted in a rough door opening bounded by a stud or other frame member, comprising: a body shaped to conform to the contour of the door jamb, said body having a first flat portion which is positioned to abut the latch mechanism receiving portion of the jamb, said body having a second flat portion offset from and parallel to the first flat faced portion and which is positioned to abut a central portion of the jamb, said body also including a connecting portion joining together the first and second flat portions; said first flat portion defining a latch mechanism receiving opening; and anchor means sized to project from the backside of said second flat portion, through the jamb and into a stud forming the rough door opening, so as to reinforce the jamb.
6. A high security door strike for a door jamb, the jamb having a latch mechanism receiving portion adjacent one edge thereof and being mounted in a rough door opening bounded by a stud or other frame member, comprising: a body of rigid sheet material, said body having a central web portion and first and second parallel flange portions projecting in opposite directions from the respective outer margins of said web portion; said body being adapted for mounting to the door jamb with the first flange portion bearing against the latch mechanism receiving portion of the jamb and the second flange portion bearing against a central portion of the jamb;
said first flange portion defining a latch mechanism receiving opening; an anchoring rod mounted to and projecting rearwardly of the second flange portion and sized so as to extend through the central portion of the jamb and into a central portion of a stud forming the rough door opening so as to reinforce the jamb; and said first and second flange portions defining plural fastener receiving openings through which fasteners are inserted to mount the door strike plate to the jamb.
said first flange portion defining a latch mechanism receiving opening; an anchoring rod mounted to and projecting rearwardly of the second flange portion and sized so as to extend through the central portion of the jamb and into a central portion of a stud forming the rough door opening so as to reinforce the jamb; and said first and second flange portions defining plural fastener receiving openings through which fasteners are inserted to mount the door strike plate to the jamb.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48789383A | 1983-04-22 | 1983-04-22 | |
| US487,893 | 1983-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1225415A true CA1225415A (en) | 1987-08-11 |
Family
ID=23937548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000450537A Expired CA1225415A (en) | 1983-04-22 | 1984-03-27 | High security door strike |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1225415A (en) |
-
1984
- 1984-03-27 CA CA000450537A patent/CA1225415A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |