Home security interlocking hinges and striker plates

• US 5,570,917 A
• Filed: 03/13/1995
• Issued: 11/05/1996
• Est. Priority Date: 03/13/1995
• Status: Expired due to Term

• Current Assignee: Robert E. Cutrer
• Original Assignee: Robert E. Cutrer
• Inventors: Cutrer, Robert E.
• Primary Examiner(s): SPRUILL, ROBERT
• Application Number:
  US08/402,865
• Time in Patent Office: 603 Days
• Field of Search: 16/DIG. 2, 16/387, 16/389, 16/392, 292/146, 292/340, 292/346
• US Class Current: 292/346
• CPC Class Codes: E05B 15/0205 Striking-plates, keepers, staples means for reducing friction E05B17/007; electric strikers E05B47/0046; staples for padlocks E05B67/383; strikers for espagnolettes E05C9/1808
• CPC Class Codes: E05B 17/2084 Means to prevent forced opening by attack, tampering or jimmying E05B15/1614 takes precedence; for ignition or steering locks B60R25/023
• CPC Class Codes: E05D 11/0018 Anti-tamper devices
• CPC Class Codes: E05D 5/06 Bent flaps
• CPC Class Codes: E05Y 2900/132 Doors
• CPC Class Codes: Y10S 292/09 Hinge plate fasteners secured to upper sash
• CPC Class Codes: Y10T 292/79 Bolt guards

Abstract

This security system will prevent the door casing from failing upon a forced entry attempt into a home by forming a rigid connection from the door casing with said security system to the wall interior structure. It will enable the wall interior structure to become the strength of the door and not the door casing.

Claims

1. In a door assembly comprising a door having a narrow side, a substantially rigid interior wall structure, and a door casing, wherein said door casing is attached to said interior wall structure, a security hinge assembly for said door, comprising:

a first bracket, including;

(a) a door attachment plate secured to said narrow side of said door;

(b) a backstop plate extending from said door attachment plate; and

(c) first hinging means extending from said door attachment plate for making a hinged connection with a second hinging means; and

a second bracket, including;

(a) a door casing attachment plate secured to said door casing;

(b) a wall structure attachment plate, secured to said interior wall structure, extending from said door casing attachment plate; and

(c) second hinging means extending from said door casing attachment plate for making a hinged connection with said first hinging means;

wherein said second hinging means of said second bracket are hingedly connected to said first hinging means of said first bracket.

2. The security hinge assembly of claim 1, wherein said backstop plate extends substantially perpendicular from door attachment plate.

3. The security hinge assembly of claim 1, wherein said wall structure attachment plate extends substantially perpendicular from said door casing attachment plate.

4. In a door assembly comprising a door having a narrow side, a substantially rigid interior wall structure, and a door casing, wherein said door casing is attached to said interior wall structure, a security hinge and striker plate system for said door, comprising:

(a) at least two security hinge assemblies connected between said door, said door casing and said interior wall structure, wherein each said security hinge assembly comprises;

(i) a first bracket, including;

(a) a door attachment plate secured to said narrow side of said door;

(b) a backstop plate extending from said door attachment plate; and

(c) first hinging means extending from said door attachment plate for making a hinged connection with a second hinging means; and

(ii) a second bracket, including;

(a) a door casing attachment plate secured to said door casing;

(b) a wall structure attachment plate, attached to said interior wall structure, extending from said door casing attachment plate;

(c) second hinging means extending from said door casing attachment plate for making a hinged connection with said fast hinging means;

wherein said second hinging means of said second bracket are hingedly connected to said first hinging means of said first bracket;

(b) a security striker plate assembly attachable to said door casing and said interior wall structure, comprising;

(i) a striker plate attached to said door casing and said interior wall structure, wherein said striker plate includes an opening adapted to receive a slidable member from said door;

(ii) a housing attached to said striker plate for insertion into a recess in said door casing; and

(iii) a rod member, attached to said housing and extending substantially perpendicular to said striker plate, for insertion into said interior wall structure; and

(c) a reinforcement assembly attached to said interior wall structure, comprising;

(i) an anchor plate attached to said interior wall structure in a first plane;

(ii) a stop plate extending perpendicularly from said anchor plate which abuts said door casing for preventing movement of said door casing toward said interior wall structure; and

(iii) a reinforcement plate extending from said stop plate in a second plane offset and parallel to said first plane of said anchor plate for contacting said door casing adjacent to said striker plate and preventing movement of said door casing away from said interior wall structure.

5. The security hinge and striker plate system of claim 4, wherein said backstop plate extends substantially perpendicular from door attachment plate.

6. The security hinge and striker plate system of claim 4, wherein said wall structure attachment plate extends substantially perpendicular from said door casing attachment plate.