Multi-point door lock system

• US 5,498,038 A
• Filed: 02/16/1993
• Issued: 03/12/1996
• Est. Priority Date: 02/16/1993
• Status: Expired due to Fees

• Current Assignee: Marvin Lumber and Cedar Company
• Original Assignee: Marvin Lumber & Cedar CO
• Inventors: Campbell, Andrew B., Curtis, George W., Simon, Ira J.
• Primary Examiner(s): Boucher, Darnell M.
• Application Number:
  US08/019,160
• Time in Patent Office: 1,120 Days
• Field of Search: 292/36, 292/40, 292/332, 292/333, 292/DIG. 21, 292/150, 292/109, 70/108, 70/110, 70/113, 70/107, 70/150
• US Class Current: 292/36
• CPC Class Codes: E05B 15/0086 Toggle levers toggle fasteners E05C19/14
• CPC Class Codes: E05B 2015/0448 Units of springs; Two or more springs working together
• CPC Class Codes: E05B 63/06 with lengthwise-adjustable bolts ; with adjustable backset, i.e. distance from door edge
• CPC Class Codes: E05B 63/185 Preventing actuation of a bolt when the wing is open E05B63/20 takes precedence, similar safety devices E05D15/526
• CPC Class Codes: E05C 7/06 a fastening device for one wing being actuated or controlled by closing another wing locking one vehicle door by shutting another E05B77/52
• CPC Class Codes: E05C 9/043 with crank pins and connecting rods
• CPC Class Codes: E05C 9/047 comprising key-operated locks, e.g. a lock cylinder to drive auxiliary deadbolts or latch bolts E05C9/041 takes precedence
• CPC Class Codes: Y10S 292/21 Individually latched double doors
• CPC Class Codes: Y10T 292/0839 Link and lever
• CPC Class Codes: Y10T 292/546 Sliding detent
• CPC Class Codes: Y10T 70/523 Multiple dead bolts
• CPC Class Codes: Y10T 70/55 Dogged bolt or connections

Abstract

A multi-point door lock system comprising an active lock and an inactive lock for use on single or double doors is self-teaching, provides one hand control of shoot bolts, and provides audible and tactile feedback associated with shoot bolt extension and retraction.

Claims

1. A door latch mechanism for installation on the vertical free edge of an active door mounted in a door frame comprising:

a case having a surface for mounting essentially flush with the vertical free edge of the active door;

a shoot bolt rotor pivotally mounted to said case;

a pin rotor pivotally mounted to said case and offset from and operatively linked to said shoot bolt rotor, said pin rotor is biased toward a first position by a pair of springs each spring of said pair being affixed to the pin rotor; and

an upper and a lower shoot bolt activation link operatively linked to said shoot bolt rotor, said upper and said lower shoot bolt activation links capable of movement between extended and retracted shoot bolt activation link positions, rotation of said pin rotor capable of controlling movement of said upper and said lower shoot bolt activation links between said extended and said retracted shoot bolt activation link positions.

2. A door latch mechanism for installation on the vertical free edge of an active door mounted in a door frame comprising:

a case having a surface for mounting essentially flush with the vertical free edge of the active door;

a shoot bolt rotor pivotally mounted to said case;

a pin rotor pivotally mounted to said case and offset from and operatively linked to said shoot bolt rotor;

an upper and a lower shoot bolt activation link operatively linked to said shoot bolt rotor, said upper and lower shoot bolt activation links capable of movement between extended and retracted shoot bolt activation link positions, rotation of said pin rotor capable of controlling movement of said upper and said lower shoot bolt activation links between said extended and said retracted shoot bolt activation link positions;

a passage link extendable through said surface and moveable between an extended and a retracted passage latch position, said passage latch is operatively linked to said pin rotor and rotation of said pin rotor is capable of controlling movement of said passage latch between said extended and retracted passage latch positions;

a key rotor pivotally mounted to said case;

a jamb bolt capable of movement between an extended jamb bolt position and a retracted jamb bolt position responsive to rotation of said key rotor;

first blocking means for blocking extension of said jamb bolt from said retracted jamb bolt position to said extended jamb bolt position when said upper and lower shoot bolt activation links are respectively in said retracted upper and lower shoot bolt activation link positions;

first biasing means for biasing said passage latch toward said extended passage latch position;

a trigger capable of movement between an extended trigger position and a retracted trigger position;

second biasing means for biasing said trigger toward said extended trigger position; and

first blocking means for blocking extension of said upper and lower shoot bolt activation links, said first blocking means operatively linked to said trigger so that said blocking means operates to block extension of said upper and lower shoot bolt activation links when said trigger is in said extended trigger position.