Adjustable dead-latching bolt mechanisms

Patent metadata

Field	Value
Publication number	US-2016208525-A1
Application number	US-201615002296-A
Country	US
Kind code	A1
Filing date	Jan 20, 2016
Priority date	Jan 20, 2015
Publication date	Jul 21, 2016
Grant date	—

Abstract

Latch mechanisms adapted to prevent unauthorized displacement of a latch bolt from an extended, locked position to a retracted, unlocked position. The latch mechanisms prevent the failure of a latch bolt of one latch mechanism to return to an extended lock position from interfering with the ability of a latch bolt of an inter-related latch mechanism from being able to return to an extended, locked position. Further embodiments provide a mounting bracket mounted to a door to allow the associated latch mechanism to be indirectly secured to the door. Additionally, the mounting bracket may have a plurality of mounting orifices that allow the mounting bracket to be used with a wide range of latch mechanisms, as well as provide adjustable attachment of the latch mechanism to the mounting bracket.

First claim

What is claimed is:

1 . An apparatus, comprising:
a displacement rod having a rod protrusion and an aperture, the displacement rod adapted for displacement between a first rod position and a second rod position; a lever member pivotally coupled to the displacement rod, the lever member having an abutment member and a foot portion, the abutment member extending from the lever member toward the displacement rod, the rod protrusion structured to engage the abutment member to pivotally displace the lever member from a first position to a second position as the displacement rod is displaced from the first rod position to the second rod position; and a latch bolt having a bolt protrusion, at least a portion of the latch bolt structured for slideable insertion into the aperture, the foot portion structured to impede displacement of at least the bolt protrusion from an extended position to a retracted position when the lever member is in the first position.

2 . The apparatus of claim 1 , wherein the abutment member includes an abutment apex, and wherein the lever member is in the second position at least when the rod protrusion is engaged with the abutment apex.

3 . The apparatus of claim 1 , further comprising a lever biasing element and a latch biasing element, the lever biasing element adapted to bias the lever member to the first position, the latch biasing element adapted to bias the latch bolt to the extended position.

4 . The apparatus of claim 1 , further comprising a housing having a plurality of sidewalls that generally define an inner region, the inner region sized to receive at least a portion of the displacement rod, at least a portion of the latch bolt, and at least a portion of the lever member.

5 . The apparatus of claim 1 , wherein an upper portion of the latch bolt is coupled to at least one pin, the at least one pin extending through a slot in the displacement rod, the slot having an elongated configuration structured for displacement between a first end and a second end of the at least one slot.

6 . The apparatus of claim 5 , wherein the aperture is sized to accommodate displacement of the displacement rod from the second position to the first position when the latch bolt remains in the retracted position.

7 . The apparatus of claim 5 , further comprising a housing including a housing slot adapted to receive slideable placement of the at least one pin, the housing slot extending along an axis that is generally parallel to the direction of displacement of the displacement rod, wherein the apparatus further includes a static pin that extends into at least one of the at least one slot in the displacement rod, and wherein the static pin is coupled to the housing and remains in a relatively static position relative to the housing.

8 . An apparatus, comprising:
a displacement rod structured for displacement between a retracted rod position and an extended rod position; at least one first link having a first end and a link slot, the first end of the at least one first link pivotally coupled to the displacement rod by a first link pin; at least one second link having a first end and a second end, the first end of the at least one second link pivotally coupled to the at least one first link by a second link pin that extends into the link slot; and a latch bolt having a first latch slot and a second latch slot, the first latch slot structured to receive insertion of a latch pin, the second latch slot adapted to receive a static latch pin, the latch bolt structured for displacement between an extended position and a retracted position.

9 . The apparatus of claim 8 , further comprising a biasing element structured to provide a biasing force that biases the position of at least the at least one first link.

10 . The apparatus of claim 9 , further comprising a housing having a plurality of sidewalls defining an inner region, the inner region sized to receive at least a portion of the latch bolt and at least a portion of the displacement rod, and wherein the position of the static latch pin is static relative to the housing.

11 . The apparatus of claim 10 , wherein the housing includes a first housing slot structured to receive the first link pin, the first housing slot extending along an axis arranged generally parallel to a direction of displacement of the displacement rod as the displacement rod travels between the retracted rod position and the extended rod position.

12 . The apparatus of claim 11 , wherein the housing includes a second housing slot adapted to receive the second link pin, the second housing slot having a first portion and a second portion, the first portion extending along a first axis, the second portion extending along a second axis that is non-parallel to the first axis.

13 . The apparatus of claim 8 , wherein the first latch slot extends along an axis that is angularly offset from and arranged non-perpendicular to an axis of the second latch slot.

14 . The apparatus of claim 13 , further comprising a latch housing having sidewall defining a slot, wherein the first latch pin extends through the slot in the latch housing, and wherein the slot extends along an axis arranged generally perpendicular to the axis of the first latch slot.

15 . The apparatus of claim 8 , wherein the link slot has an elongated configuration that extends along a link axis, the link slot structured to accommodate displacement of the second link pin at least when the displacement rod is displaced from the extended rod position to the retracted rod position while the latch bolt remains in the retracted position.

16 . An apparatus, comprising:
a displacement rod structure for displacement between a retracted rod position and an extended rod position; a link coupled to the displacement rod by at least one link pin, the link including a cam opening having a cam surface, the cam opening structured to receive at least a portion of a cam pin, the cam surface adapted to facilitate displacement of the cam pin in a first direction when the cam pin abuts the cam surface; and a latch bolt having a latch slot sized to receive slideable insertion of the cam pin, the latch slot extending along an axis that is offset from and not perpendicular to a longitudinal axis of a body portion of the latch bolt.

17 . The apparatus of claim 16 , wherein the latch bolt includes a protrusion that extends from the body portion of the latch bolt, the protrusion coupled to a latch pin.

18 . The apparatus of claim 16 , further comprising a housing having a plurality of sidewalls that define an inner region, the inner region sized to receive placement of at least a portion of the displacement rod and at least a portion of the latch bolt.

19 . The apparatus of claim 18 , wherein the housing includes:
a first housing slot structured for slideable displacement of the at least one link pin, the first housing slot extending along an axis arranged generally parallel to the direction of displacement of the displacement rod as the displacement rod travels between the retracted and extended rod positions; a second housing slot structured to receive slideable displacement of the cam pin, the second housing slot having a first portion, a second portion, and a third portion, the third portion providing a transition area between the first and second portions, the first portion having an elongated configuration that extends along a first axis, the second portion having an elongated configuration that extends along a second axis arranged generally perpendicula

Assignees

• Schlage Lock Co Llc

Inventors

• Arlinghaus Paul Raymond
• Ali Mohammed Maksood
• Pattar Jonah M
• Putaswamy Kemparaju
• Kondi Sushanth Anand Rao
• Graham Matthew Scott
• Rai Subashchandra
• Tantri Keshav

Classifications

• E05C9/185

  parallel with actuating bar · CPC title

• E05B17/2034

  moving pivotally or rotatively · CPC title

• Y10T292/54

  Trippers · CPC title

• E05C9/04 Primary

  with two sliding bars moved in opposite directions when fastening or unfastening · CPC title

• Y10T292/0834

  Sliding · CPC title