CA2835025A1 - Tri-sided lock and latch mechanism for a hinged swinging door - Google Patents
Tri-sided lock and latch mechanism for a hinged swinging door Download PDFInfo
- Publication number
- CA2835025A1 CA2835025A1 CA 2835025 CA2835025A CA2835025A1 CA 2835025 A1 CA2835025 A1 CA 2835025A1 CA 2835025 CA2835025 CA 2835025 CA 2835025 A CA2835025 A CA 2835025A CA 2835025 A1 CA2835025 A1 CA 2835025A1
- Authority
- CA
- Canada
- Prior art keywords
- door
- cam
- degrees
- tri
- lock
- 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.)
- Abandoned
Links
Landscapes
- Supports Or Holders For Household Use (AREA)
Abstract
A tri-sided lock/latch mechanism for a door, mounted within a door frame, for use with a common keyed cylindrical lock, having an outer stationary cylinder which extends through a central portion of the door; the improvement comprising: a cam pivotably mounted on the stationary cylinder, said cam having three radially extending latch portions, extending beyond the sides of the door; a rotating lever driven by the non-circular end portion of a rotating inner lock cylinder, carrying an arm, which extends through a circular slot portion in the cam, to result in the lever from rotating the cam generally more than 45 degrees when the lever is rotated 90 degrees by the key; and wherein the door frame has three positioned latch receptor slots which receive the latch portions of the cam, thereby securing the door on all unhinged sides with a generally available and inexpensive 90 degree turn lock.
Description
TRI-SIDED LOCK AND LATCH MECHANISM
FOR A HINGED SWINGING DOOR
PRIOR APPLICATION
Priority of US Provisional Application No. 61/797,076 filed 11/30/2012 by Alain Gadoury is claimed.
FIELD OF THE INVENTION
This invention relates to more securely locking hinged swinging doors. More particularly this invention relates to a locking latch mechanism which latches a hinged swinging door not only on the side of the door opposite the hinge but additionally on an upper and lower side portion of the door. The disclosed mechanism has particular applicability on mail box doors as well as on gun safes which secure firearms.
BACKGROUND OF THE INVENTION
The tri-sided lock and latch mechanism disclosed herein was initially developed for better securing locking mail box doors. Mail box doors typically cover an exposed entire front portion of a mail cubicle. The mail cubicle typically is typically one in a bank of many mail cubicles which is associated with a number identifying its matrix position in the bank of mail cubicles. Frequently it is only the front side portion and door of the mail cubicle which is accessible to the user, and all others, other than post office personnel.
Generally, in all cases it is the front door of the mail cubicle which is most susceptible to forcible removal as a first step to unauthorized entry and the subsequent burglary of the mail in the cubicle.
Generally mail box doors are hinged on one side and latched on an opposite side.
Typically mail box doors are latched using a keyed cylindrical lock mechanism which requires a quarter key turn to open the mail box. These mail box doors can be relatively and quickly pried open using a bar having a flat end portion which can be forcibly slipped between an unlatched side portion of the door and the mail box frame. To deter, and render burglary much more difficult, it is desirable to have the mail box door secured to the mail box on all sides. It is also practically necessary that an improved mail box door latch mechanism be simple and inexpensive to implement. This almost necessitates utilizing the generally available and inexpensive keyed cylindrical lock mechanism which requires a quarter key turn to open the mail box.
OBJECTS OF THE INVENTION
FOR A HINGED SWINGING DOOR
PRIOR APPLICATION
Priority of US Provisional Application No. 61/797,076 filed 11/30/2012 by Alain Gadoury is claimed.
FIELD OF THE INVENTION
This invention relates to more securely locking hinged swinging doors. More particularly this invention relates to a locking latch mechanism which latches a hinged swinging door not only on the side of the door opposite the hinge but additionally on an upper and lower side portion of the door. The disclosed mechanism has particular applicability on mail box doors as well as on gun safes which secure firearms.
BACKGROUND OF THE INVENTION
The tri-sided lock and latch mechanism disclosed herein was initially developed for better securing locking mail box doors. Mail box doors typically cover an exposed entire front portion of a mail cubicle. The mail cubicle typically is typically one in a bank of many mail cubicles which is associated with a number identifying its matrix position in the bank of mail cubicles. Frequently it is only the front side portion and door of the mail cubicle which is accessible to the user, and all others, other than post office personnel.
Generally, in all cases it is the front door of the mail cubicle which is most susceptible to forcible removal as a first step to unauthorized entry and the subsequent burglary of the mail in the cubicle.
Generally mail box doors are hinged on one side and latched on an opposite side.
Typically mail box doors are latched using a keyed cylindrical lock mechanism which requires a quarter key turn to open the mail box. These mail box doors can be relatively and quickly pried open using a bar having a flat end portion which can be forcibly slipped between an unlatched side portion of the door and the mail box frame. To deter, and render burglary much more difficult, it is desirable to have the mail box door secured to the mail box on all sides. It is also practically necessary that an improved mail box door latch mechanism be simple and inexpensive to implement. This almost necessitates utilizing the generally available and inexpensive keyed cylindrical lock mechanism which requires a quarter key turn to open the mail box.
OBJECTS OF THE INVENTION
It is an object of this invention to disclose an improved locking latch mechanism for a mail box door which is simple to construct and inexpensive to construct. It is an object of this invention to disclose an improved locking latch mechanism for a mail box door which utilizes a keyed cylindrical lock mechanism which requires a quarter key turn to open the mail box. It is yet a further object of this invention to disclose an improved locking latch mechanism which latches a rectangular swinging door on three sides so that the swinging door is thereby secured to the frame of an enclosure on all four sides thereby resulting in substantially improved security of valuables therein because of substantially greater resistance of the enclosure to forcible entry. It is yet a further object of this invention to disclose an improved locking latch mechanism which can be employed on any hinged swinging door.
One aspect of this invention provides for a a tri-sided lock and latch mechanism for a swinging rectangular door, mounted within a door frame on a hinge, said door having a hinged side and an opposite parallel side, as well as two other sides which extend perpendicularly to the hinged side and parallel to each other; said tri-sided lock mechanism for use with a keyed cylindrical lock of the type having an inner rotating cylinder which longitudinally receives a key on an outer end, and has an opposite rotating a non-circular inner end portion which rotates clockwise generally no more than 90 degrees from an initial position when the key is turned, said rotating inner cylinder positioned within an outer stationary cylinder having an external holding means, and a flat side portion positioned for non-rotatable mounting within a hole having a peripheral flat side portion which extends through a central portion of the door; the imechanism comprising: a cam pivotably mounted on the stationary cylinder, on an inside of the door, said cam having three peripheral radially extending latch portions, one of the latch portions extending beyond the opposite parallel side of the door when said cam is in the initial position, and the other two of the three latch portions extending beyond the two other sides of the door which extend perpendicular to the hinged side thereof when said cam is in the initial position; a rotating lever having an inner end portion positioned around, and driven by the non-circular end portion of the rotating inner cylinder, and an outer end portion carrying a perpendicularly extending arm, an end portion of which extends through a circular slot portion in the cam, said slot configured to facilitate the outer end portion of the arm of the lever rotating the cam less than 90 degrees when the lever is rotated generally 90 degrees by the rotating inner cylinder of the lock when the key is turned generally 90 degrees; and, wherein the door frame has three appropriately positioned latch receptor slots which receive the three latch portions of the cam when the cam is in the initial position, and allow the latch portions to rotate therefrom when the cam turns less than 90 degrees when the key is turned generally 90 degrees. The door which is thereby held on one side by the hinge, is additionally able to be latched and secured on each of all other three sides with a generally available and inexpensive keyed lock of the type that turns generally 90 degrees.
A method of better latching and locking a swinging rectangular door, mounted within a door frame on a hinge, said door having a hinged side and an opposite parallel side, as well as two other sides which extend perpendicularly to the hinged side and parallel to each other;
comprises the steps of: a) providing a keyed cylindrical lock of the type having an inner rotating cylinder which longitudinally receives a key on an outer end, and has an opposite rotating a non-circular inner end portion which rotates clockwise generally no more than 90 degrees from an initial position when the key is turned, said rotating inner cylinder positioned within an outer stationary cylinder having an external thread, and a flat side portion for non-rotatable mounting;
b) cutting a hole through a central portion of the swinging rectangular door, said hole having a peripheral flat side portion to matably receive the outer stationary cylinder having a flat side portion for positioned non-rotatable mounting; c) mounting the keyed cylindrical lock within the hole through the swinging rectangular door; providing the tri-sided lock and latch mechanism as specified in claim 1; and, d) providing three appropriately positioned latch receptor slots which receive the three latch portions of the cam when the cam is in the initial position, and allow the latch portions to rotate therefrom when the cam turns less than 90 degrees when the key is turned generally 90 degrees. The door is thereby secured on each of its three unhinged sides with a generally available and inexpensive keyed lock of the type that turns generally 90 degrees.
Various other objects, advantages and features of this invention will become apparent to those skilled in the art from the following description in conjunction with the accompanying drawings.
FIGURES OF THE INVENTION
Figure 1 is a perspective exploded view of a locking latch mechanism which latches a hinged swinging door not only on the side of the door opposite the hinge, but additionally on two other sides which extend perpendicularly to the hinged side and parallel to each other.
Figure 2 is a perspective view of a multiple mailbox unit.
Figure 3 is a front view of the swinging door and latch mechanism shown in figure 1 positioned within a door frame.
Figure 4 is a lateral partial cross section of the door and door frame shown in figure 2 as viewed along line 4-4.
Figure 5 is a lateral cross section of the door and door frame shown in figure 4 wherein the latch is in an open position.
The following is a discussion and description of the preferred specific embodiments of this invention, such being made with reference to the drawings, wherein the same reference numerals are used to indicate the same or similar parts and/or structure. It should be noted that such discussion and description is not meant to unduly limit the scope of the invention.
DESCRIPTION OF THE INVENTION
Turning now to the drawings and more particularly to figure 1 we have a perspective exploded view of a tri-sided locking latch mechanism 20 which latches a hinged swinging door 18 not only on the side of the door opposite the hinge, but additionally on two other sides which extend perpendicularly to the hinged side and parallel to each other. Most generally, the tri-sided lock and latch mechanism 20 for a swinging rectangular door 18, mounted within a door frame 16 on a hinge 14, said door 18 having a hinged side and an opposite parallel side, as well as two other sides which extend perpendicularly to the hinged side and parallel to each other;
said tri-sided lock mechanism 20 for use with a keyed cylindrical lock 12 of the type having an inner rotating cylinder 1 which longitudinally receives a key 9 on an outer end, and has an opposite rotating a non-circular inner end portion 8 which rotates clockwise generally no more than 90 degrees from an initial position when the key 9 is turned, said rotating inner cylinder 10 positioned within an outer stationary cylinder 11 having an external holding means 7, and a flat side portion 6 positioned for non-rotatable mounting within a hole 5 having a peripheral flat side portion 4 which extends through a central portion of the door 18;
comprises: a cam 22 pivotably mounted on the stationary cylinder 11, on an inside of the door 18, said cam 22 having three peripheral radially extending latch portions 24, one of the latch portions 24 extending beyond the opposite parallel side of the door 18 when said cam 22 is in the initial position, and the other two of the three latch portions 24 extending beyond the two other sides of the door 18 which extend perpendicular to the hinged side thereof when said cam 22 is in the initial position; a rotating lever 26 having an inner end portion positioned around, and driven by the non-circular end portion of the rotating inner cylinder 10, and an outer end portion carrying a perpendicularly extending arm, which most preferentially comprises a bolt 28, having an end portion which extends through a circular slot portion 30 in the cam 22, said slot portion 30 configured to facilitate the outer end portion of the arm of the lever 26 rotating the cam 22 less than 90 degrees when the lever 26 is rotated generally 90 degrees by the rotating inner cylinder 10 of the lock 12 when the key 9 is turned generally 90 degrees; and, wherein the door frame 16 has three appropriately positioned latch receptor slots 32 which receive the three latch portions 24 of the cam 22 when the cam is in the initial position, and allow the latch portions 24 to rotate therefrom when the cam 22 turns less than 90 degrees when the key 9 is turned generally 90 degrees. The door 18 is thereby held on one side by the hinge 14, and is additionally able to be latched and secured on each of all other three sides with a generally available and inexpensive keyed lock 12 of the type that turns generally 90 degrees.
Figure 2 is a perspective view of a multiple mailbox unit. Figure 3 is a front view of the swinging door and latch mechanism shown in figure 1 positioned within a door frame. In the most preferred embodiment of the invention wherein the cam 22 and rotating lever 26 comprise stamped sheet metal, wherein the external holding means 7 on the stationary cylinder 11 comprises an external thread 7B, and wherein the perpendicularly extending arm 28 carried by the outer end portion of the rotating lever 26 comprises a threaded bolt 28 having a shaft end which extends into the circular slot portion 30 in the cam 22. It is noted that the external holding means 7 is intended to include a keyed lock 12 having an external holding means 7 which comprises a U shaped spring clip [not shown] rather than an sxternal thread and a mating nut. In one embodiment of the invention the two opposite of the three peripheral radially extending latch portions 24 extend generally equal distances from a center line drawn through the rotating stationary cylinder 11, and wherein the hole 5 through the swinging door 18 is centered equally between the two other sides of the door 18 which extend perpendicularly to the hinged side of the door 24. In the most preferred embodiment of the invention all three of the peripheral radially extending latch portions 24 extend generally equal distances from a center line drawn through the rotating cylinder 10, and wherein the hole 5 through the swinging door 18 is centered equal distances from all three unhinged sides of the door 24.
Figure 4 is a lateral partial cross section of the door 18 and door frame 16 shown in figure 2 as viewed along line 4-4. Figure 5 is a lateral cross section of the door and door frame shown in figure 4 wherein the latch is in an open position. The circular slot portion in the cam 22 may be dimensioned to result in a cam rotation between 40 and 75 degrees when the cam 22 when the inner cylinder is rotated 90 degrees by the key. Most preferably the circular slot portion 30 in the cam has a length dimensioned to result in a 57 degree rotation of the cam 22 when the inner cylinder is rotated 90 degrees by the key 9. In a preferred embodiment of the invention the door 18 is provided for a mailbox 19 and wherein the door 18 comprises an extrusion. Most preferably the extruded mailbox door 18 has a vertical hinge pin opening 40 on an inner side of the door 18, and wherein a longitudinal opening along the extruded hinge pin opening 40, generally necessary in the extrusion process, runs along an inner side of the vertical opening 40, rather than a back side of the vertical opening [not shown], so that it is more difficult to pry the extruded door 18 off the vertical hinge pin 14.
In the most preferred embodiment of the invention, the latch portions 24 which extend through the two other sides which extend perpendicularly to the hinged side and parallel to each other, are in two different parallel planes, offset one from the other so that the latch receptor slots 30 for the latch portions 24 do not occur in the same portion of a door frame, so that in an arrangement having the same door frame for an upper mail box door 18, and a lower mail box door 18, the receiving door frame 16 is not unnecessarily weakened by an upper and lower latch receptor slots 32 for an upper and a lower door attaching to the portion of the same door frame 16.
A method of better latching and locking a swinging rectangular door 18, mounted within a door frame 16 on a hinge 14, said door 18 having a hinged side and an opposite parallel side, as well as two other sides which extend perpendicularly to the hinged side and parallel to each other; comprises the steps of: providing a keyed cylindrical lock 12 of the type having an inner rotating cylinder 10 which longitudinally receives a key 9 on an outer end, and has an opposite rotating a non-circular inner end portion 8 which rotates clockwise generally no more than 90 degrees from an initial position when the key 9 is turned, said rotating inner cylinder 10 positioned within an outer stationary cylinder 11 having an external holding means, and a flat side portion 6 for non-rotatable mounting; cutting a hole 5 through a central portion of the swinging rectangular door 18, said hole having a peripheral flat side portion 4 to matably receive the outer stationary cylinder 12 having a flat side portion 6 for positioned non-rotatable mounting; mounting the keyed cylindrical lock 12 within the hole 5 through the swinging rectangular door 18 providing the tri-sided lock and latch mechanism 20 as most generally specified above; providing three appropriately positioned latch receptor slots 32 which receive the three latch portions 24 of the cam 22 when the cam 22 is in the initial position, and allow the latch portions 24 to rotate therefrom when the cam 22 turns less than 90 degrees when the key 9 is turned generally 90 degrees. The door 18 is thereby secured on each of its three unhinged sides with a generally available and inexpensive keyed lock 12 of the type that turns generally 90 degrees.
When the door 18 is for a mailbox 19 and the method further comprises the additional steps of: extruding the door 18; and, providing a vertical hinge pin opening 40 on an inner side of the door 18, and wherein a longitudinal opening 40 along the extruded hinge pin 14 opening, generally necessary in the extrusion process, runs along an inner side of the longitudinal opening, rather than a back side of the longitudinal opening 40, so that it is more difficult to pry the extruded door 18 off the vertical hinge pin 14.
While the invention has been described with preferred specific embodiments thereof, it will be understood that this description is intended to illustrate and not to limit the scope of the invention, which is defined by the following claims.
One aspect of this invention provides for a a tri-sided lock and latch mechanism for a swinging rectangular door, mounted within a door frame on a hinge, said door having a hinged side and an opposite parallel side, as well as two other sides which extend perpendicularly to the hinged side and parallel to each other; said tri-sided lock mechanism for use with a keyed cylindrical lock of the type having an inner rotating cylinder which longitudinally receives a key on an outer end, and has an opposite rotating a non-circular inner end portion which rotates clockwise generally no more than 90 degrees from an initial position when the key is turned, said rotating inner cylinder positioned within an outer stationary cylinder having an external holding means, and a flat side portion positioned for non-rotatable mounting within a hole having a peripheral flat side portion which extends through a central portion of the door; the imechanism comprising: a cam pivotably mounted on the stationary cylinder, on an inside of the door, said cam having three peripheral radially extending latch portions, one of the latch portions extending beyond the opposite parallel side of the door when said cam is in the initial position, and the other two of the three latch portions extending beyond the two other sides of the door which extend perpendicular to the hinged side thereof when said cam is in the initial position; a rotating lever having an inner end portion positioned around, and driven by the non-circular end portion of the rotating inner cylinder, and an outer end portion carrying a perpendicularly extending arm, an end portion of which extends through a circular slot portion in the cam, said slot configured to facilitate the outer end portion of the arm of the lever rotating the cam less than 90 degrees when the lever is rotated generally 90 degrees by the rotating inner cylinder of the lock when the key is turned generally 90 degrees; and, wherein the door frame has three appropriately positioned latch receptor slots which receive the three latch portions of the cam when the cam is in the initial position, and allow the latch portions to rotate therefrom when the cam turns less than 90 degrees when the key is turned generally 90 degrees. The door which is thereby held on one side by the hinge, is additionally able to be latched and secured on each of all other three sides with a generally available and inexpensive keyed lock of the type that turns generally 90 degrees.
A method of better latching and locking a swinging rectangular door, mounted within a door frame on a hinge, said door having a hinged side and an opposite parallel side, as well as two other sides which extend perpendicularly to the hinged side and parallel to each other;
comprises the steps of: a) providing a keyed cylindrical lock of the type having an inner rotating cylinder which longitudinally receives a key on an outer end, and has an opposite rotating a non-circular inner end portion which rotates clockwise generally no more than 90 degrees from an initial position when the key is turned, said rotating inner cylinder positioned within an outer stationary cylinder having an external thread, and a flat side portion for non-rotatable mounting;
b) cutting a hole through a central portion of the swinging rectangular door, said hole having a peripheral flat side portion to matably receive the outer stationary cylinder having a flat side portion for positioned non-rotatable mounting; c) mounting the keyed cylindrical lock within the hole through the swinging rectangular door; providing the tri-sided lock and latch mechanism as specified in claim 1; and, d) providing three appropriately positioned latch receptor slots which receive the three latch portions of the cam when the cam is in the initial position, and allow the latch portions to rotate therefrom when the cam turns less than 90 degrees when the key is turned generally 90 degrees. The door is thereby secured on each of its three unhinged sides with a generally available and inexpensive keyed lock of the type that turns generally 90 degrees.
Various other objects, advantages and features of this invention will become apparent to those skilled in the art from the following description in conjunction with the accompanying drawings.
FIGURES OF THE INVENTION
Figure 1 is a perspective exploded view of a locking latch mechanism which latches a hinged swinging door not only on the side of the door opposite the hinge, but additionally on two other sides which extend perpendicularly to the hinged side and parallel to each other.
Figure 2 is a perspective view of a multiple mailbox unit.
Figure 3 is a front view of the swinging door and latch mechanism shown in figure 1 positioned within a door frame.
Figure 4 is a lateral partial cross section of the door and door frame shown in figure 2 as viewed along line 4-4.
Figure 5 is a lateral cross section of the door and door frame shown in figure 4 wherein the latch is in an open position.
The following is a discussion and description of the preferred specific embodiments of this invention, such being made with reference to the drawings, wherein the same reference numerals are used to indicate the same or similar parts and/or structure. It should be noted that such discussion and description is not meant to unduly limit the scope of the invention.
DESCRIPTION OF THE INVENTION
Turning now to the drawings and more particularly to figure 1 we have a perspective exploded view of a tri-sided locking latch mechanism 20 which latches a hinged swinging door 18 not only on the side of the door opposite the hinge, but additionally on two other sides which extend perpendicularly to the hinged side and parallel to each other. Most generally, the tri-sided lock and latch mechanism 20 for a swinging rectangular door 18, mounted within a door frame 16 on a hinge 14, said door 18 having a hinged side and an opposite parallel side, as well as two other sides which extend perpendicularly to the hinged side and parallel to each other;
said tri-sided lock mechanism 20 for use with a keyed cylindrical lock 12 of the type having an inner rotating cylinder 1 which longitudinally receives a key 9 on an outer end, and has an opposite rotating a non-circular inner end portion 8 which rotates clockwise generally no more than 90 degrees from an initial position when the key 9 is turned, said rotating inner cylinder 10 positioned within an outer stationary cylinder 11 having an external holding means 7, and a flat side portion 6 positioned for non-rotatable mounting within a hole 5 having a peripheral flat side portion 4 which extends through a central portion of the door 18;
comprises: a cam 22 pivotably mounted on the stationary cylinder 11, on an inside of the door 18, said cam 22 having three peripheral radially extending latch portions 24, one of the latch portions 24 extending beyond the opposite parallel side of the door 18 when said cam 22 is in the initial position, and the other two of the three latch portions 24 extending beyond the two other sides of the door 18 which extend perpendicular to the hinged side thereof when said cam 22 is in the initial position; a rotating lever 26 having an inner end portion positioned around, and driven by the non-circular end portion of the rotating inner cylinder 10, and an outer end portion carrying a perpendicularly extending arm, which most preferentially comprises a bolt 28, having an end portion which extends through a circular slot portion 30 in the cam 22, said slot portion 30 configured to facilitate the outer end portion of the arm of the lever 26 rotating the cam 22 less than 90 degrees when the lever 26 is rotated generally 90 degrees by the rotating inner cylinder 10 of the lock 12 when the key 9 is turned generally 90 degrees; and, wherein the door frame 16 has three appropriately positioned latch receptor slots 32 which receive the three latch portions 24 of the cam 22 when the cam is in the initial position, and allow the latch portions 24 to rotate therefrom when the cam 22 turns less than 90 degrees when the key 9 is turned generally 90 degrees. The door 18 is thereby held on one side by the hinge 14, and is additionally able to be latched and secured on each of all other three sides with a generally available and inexpensive keyed lock 12 of the type that turns generally 90 degrees.
Figure 2 is a perspective view of a multiple mailbox unit. Figure 3 is a front view of the swinging door and latch mechanism shown in figure 1 positioned within a door frame. In the most preferred embodiment of the invention wherein the cam 22 and rotating lever 26 comprise stamped sheet metal, wherein the external holding means 7 on the stationary cylinder 11 comprises an external thread 7B, and wherein the perpendicularly extending arm 28 carried by the outer end portion of the rotating lever 26 comprises a threaded bolt 28 having a shaft end which extends into the circular slot portion 30 in the cam 22. It is noted that the external holding means 7 is intended to include a keyed lock 12 having an external holding means 7 which comprises a U shaped spring clip [not shown] rather than an sxternal thread and a mating nut. In one embodiment of the invention the two opposite of the three peripheral radially extending latch portions 24 extend generally equal distances from a center line drawn through the rotating stationary cylinder 11, and wherein the hole 5 through the swinging door 18 is centered equally between the two other sides of the door 18 which extend perpendicularly to the hinged side of the door 24. In the most preferred embodiment of the invention all three of the peripheral radially extending latch portions 24 extend generally equal distances from a center line drawn through the rotating cylinder 10, and wherein the hole 5 through the swinging door 18 is centered equal distances from all three unhinged sides of the door 24.
Figure 4 is a lateral partial cross section of the door 18 and door frame 16 shown in figure 2 as viewed along line 4-4. Figure 5 is a lateral cross section of the door and door frame shown in figure 4 wherein the latch is in an open position. The circular slot portion in the cam 22 may be dimensioned to result in a cam rotation between 40 and 75 degrees when the cam 22 when the inner cylinder is rotated 90 degrees by the key. Most preferably the circular slot portion 30 in the cam has a length dimensioned to result in a 57 degree rotation of the cam 22 when the inner cylinder is rotated 90 degrees by the key 9. In a preferred embodiment of the invention the door 18 is provided for a mailbox 19 and wherein the door 18 comprises an extrusion. Most preferably the extruded mailbox door 18 has a vertical hinge pin opening 40 on an inner side of the door 18, and wherein a longitudinal opening along the extruded hinge pin opening 40, generally necessary in the extrusion process, runs along an inner side of the vertical opening 40, rather than a back side of the vertical opening [not shown], so that it is more difficult to pry the extruded door 18 off the vertical hinge pin 14.
In the most preferred embodiment of the invention, the latch portions 24 which extend through the two other sides which extend perpendicularly to the hinged side and parallel to each other, are in two different parallel planes, offset one from the other so that the latch receptor slots 30 for the latch portions 24 do not occur in the same portion of a door frame, so that in an arrangement having the same door frame for an upper mail box door 18, and a lower mail box door 18, the receiving door frame 16 is not unnecessarily weakened by an upper and lower latch receptor slots 32 for an upper and a lower door attaching to the portion of the same door frame 16.
A method of better latching and locking a swinging rectangular door 18, mounted within a door frame 16 on a hinge 14, said door 18 having a hinged side and an opposite parallel side, as well as two other sides which extend perpendicularly to the hinged side and parallel to each other; comprises the steps of: providing a keyed cylindrical lock 12 of the type having an inner rotating cylinder 10 which longitudinally receives a key 9 on an outer end, and has an opposite rotating a non-circular inner end portion 8 which rotates clockwise generally no more than 90 degrees from an initial position when the key 9 is turned, said rotating inner cylinder 10 positioned within an outer stationary cylinder 11 having an external holding means, and a flat side portion 6 for non-rotatable mounting; cutting a hole 5 through a central portion of the swinging rectangular door 18, said hole having a peripheral flat side portion 4 to matably receive the outer stationary cylinder 12 having a flat side portion 6 for positioned non-rotatable mounting; mounting the keyed cylindrical lock 12 within the hole 5 through the swinging rectangular door 18 providing the tri-sided lock and latch mechanism 20 as most generally specified above; providing three appropriately positioned latch receptor slots 32 which receive the three latch portions 24 of the cam 22 when the cam 22 is in the initial position, and allow the latch portions 24 to rotate therefrom when the cam 22 turns less than 90 degrees when the key 9 is turned generally 90 degrees. The door 18 is thereby secured on each of its three unhinged sides with a generally available and inexpensive keyed lock 12 of the type that turns generally 90 degrees.
When the door 18 is for a mailbox 19 and the method further comprises the additional steps of: extruding the door 18; and, providing a vertical hinge pin opening 40 on an inner side of the door 18, and wherein a longitudinal opening 40 along the extruded hinge pin 14 opening, generally necessary in the extrusion process, runs along an inner side of the longitudinal opening, rather than a back side of the longitudinal opening 40, so that it is more difficult to pry the extruded door 18 off the vertical hinge pin 14.
While the invention has been described with preferred specific embodiments thereof, it will be understood that this description is intended to illustrate and not to limit the scope of the invention, which is defined by the following claims.
Claims (14)
1) A tri-sided lock and latch mechanism for a swinging rectangular door, mounted within a door frame on a hinge, said door having a hinged side and an opposite parallel side, as well as two other sides which extend perpendicularly to the hinged side and parallel to each other;
said tri-sided lock and latch mechanism for use with a keyed cylindrical lock of the type having an inner rotating cylinder which longitudinally receives a key on an outer end, and has an opposite rotating a non-circular inner end portion which rotates clockwise generally no more than 90 degrees from an initial position when the key is turned, said rotating inner cylinder positioned within an outer stationary cylinder having an external holding means, and a flat side portion positioned for non-rotatable mounting within a hole having a peripheral flat side portion which extends through a central portion of the door; comprising:
a cam pivotably mounted on the stationary cylinder, on an inside of the door, said cam having three peripheral radially extending latch portions, one of the latch portions extending beyond the opposite parallel side of the door when said cam is in the initial position, and the other two of the three latch portions extending beyond the two other sides of the door which extend perpendicular to the hinged side thereof when said cam is in the initial position;
a rotating lever having an inner end portion positioned around, and driven by the non-circular end portion of the rotating inner cylinder, and an outer end portion carrying a perpendicularly extending arm, an end portion of which extends through a circular slot portion in the cam, said slot configured to facilitate the outer end portion of the arm of the lever rotating the cam less than 90 degrees when the lever is rotated generally 90 degrees by the rotating inner cylinder of the lock when the key is turned generally 90 degrees; and, wherein the door frame has three appropriately positioned latch receptor slots which receive the three latch portions of the cam when the cam is in the initial position, and allow the latch portions to rotate therefrom when the cam turns less than 90 degrees when the key is turned generally 90 degrees;
so that the door which is held on one side by the hinge, and is additionally able to be latched and secured on each of all other three sides with a generally available and inexpensive keyed lock of the type that turns generally 90 degrees.
said tri-sided lock and latch mechanism for use with a keyed cylindrical lock of the type having an inner rotating cylinder which longitudinally receives a key on an outer end, and has an opposite rotating a non-circular inner end portion which rotates clockwise generally no more than 90 degrees from an initial position when the key is turned, said rotating inner cylinder positioned within an outer stationary cylinder having an external holding means, and a flat side portion positioned for non-rotatable mounting within a hole having a peripheral flat side portion which extends through a central portion of the door; comprising:
a cam pivotably mounted on the stationary cylinder, on an inside of the door, said cam having three peripheral radially extending latch portions, one of the latch portions extending beyond the opposite parallel side of the door when said cam is in the initial position, and the other two of the three latch portions extending beyond the two other sides of the door which extend perpendicular to the hinged side thereof when said cam is in the initial position;
a rotating lever having an inner end portion positioned around, and driven by the non-circular end portion of the rotating inner cylinder, and an outer end portion carrying a perpendicularly extending arm, an end portion of which extends through a circular slot portion in the cam, said slot configured to facilitate the outer end portion of the arm of the lever rotating the cam less than 90 degrees when the lever is rotated generally 90 degrees by the rotating inner cylinder of the lock when the key is turned generally 90 degrees; and, wherein the door frame has three appropriately positioned latch receptor slots which receive the three latch portions of the cam when the cam is in the initial position, and allow the latch portions to rotate therefrom when the cam turns less than 90 degrees when the key is turned generally 90 degrees;
so that the door which is held on one side by the hinge, and is additionally able to be latched and secured on each of all other three sides with a generally available and inexpensive keyed lock of the type that turns generally 90 degrees.
2) A tri-sided lock and latch mechanism as in claim 1 wherein the cam and rotating lever comprise stamped sheet metal, wherein the external holding means on the stationary cylinder comprises an external thread, and wherein the perpendicularly extending arm carried by the outer end portion of the rotating lever comprises a threaded bolt having a shaft end which extends into the circular slot portion in the cam.
3) A tri-sided lock and latch mechanism as in claim 2 wherein two opposite of the three peripheral radially extending latch portions extend generally equal distances from a center line drawn through the rotating cylinder, and wherein the hole through the swinging door is centered equally between the two other sides of the door which extend perpendicularly to the hinged side of the door.
4) A tri-sided lock and latch mechanism as in claim 3 wherein all three of the peripheral radially extending latch portions extend generally equal distances from a center line drawn through the rotating cylinder, and wherein the hole through the swinging door is centered equal distances from all three unhinged sides of the door.
5) A tri-sided lock and latch mechanism as in claim 1 wherein the circular slot portion in the cam has a length dimensioned to result in a rotation of the cam between 40 and 75 degree when the inner cylinder is rotated 90 degrees by the key.
6) A tri-sided lock and latch mechanism as in claim 5 wherein the circular slot portion in the cam has a length dimensioned to result in a rotation of the cam between 50 and 65 degree when the inner cylinder is rotated 90 degrees by the key.
7) A tri-sided lock and latch mechanism as in claim 6 wherein the circular slot portion in the cam has a length dimensioned to result in a rotation of the cam between 50 and 65 degree when the inner cylinder is rotated 90 degrees by the key.
8) A tri-sided lock and latch mechanism as in claim 7 wherein the circular slot portion in the cam has a length dimensioned to result in a rotation of the cam between 55 and 60 degree when the inner cylinder is rotated 90 degrees by the key.
9) A tri-sided lock and latch mechanism as in claim 1 wherein the circular slot portion in the cam has a length dimensioned to result generally in a 57 degree rotation of the cam when the inner cylinder is rotated 90 degrees by the key.
10) A tri-sided lock and latch mechanism as in claim 9 wherein the latch portions which extend through the two other sides which extend perpendicularly to the hinged side and parallel to each other, are offset planes, one from the other so that receiving slots for the latches do not occur in the same portion of a door frame, so that in a multiple mailbox arrangement having the same door frame for an upper mail box door and a lower mail box door, the receiving door frame is not unnecessarily weakened by an upper and lower latch receptor slots for an upper and a lower door attaching to the same door frame.
11) A tri-sided lock and latch mechanism as in claim 9 wherein the door is provided for a mailbox and wherein the door comprises an extrusion.
12) A tri-sided lock and latch mechanism as in claim 10 wherein the extruded mailbox door has a vertical hinge pin opening on an inner side of the door, and wherein a vertical opening along the extruded hinge pin opening, generally necessary in the extrusion process, runs along an inner side of the vertical opening, rather than a back side of the vertical opening, so that it is more difficult to pry the extruded door off the vertical hinge pin.
13) A method of better latching and locking a swinging rectangular door, mounted within a door frame on a hinge, said door having a hinged side and an opposite parallel side, as well as two other sides which extend perpendicularly to the hinged side and parallel to each other;
comprising the steps of:
providing a keyed cylindrical lock of the type having an inner rotating cylinder which longitudinally receives a key on an outer end, and has an opposite end rotating a non-circular inner end portion which rotates clockwise and generally no more than 90 degrees from an initial position when the key is turned, said rotating inner cylinder positioned within an outer stationary cylinder having an external thread, and a flat side portion for non-rotatable mounting;
cutting a hole through a central portion of the swinging rectangular door, said hole having a peripheral flat side portion to matably receive the outer stationary cylinder having a flat side portion for positioned non-rotatable mounting;
mounting the keyed cylindrical lock within the hole through the swinging rectangular door;
providing the tri-sided lock and latch mechanism as specified in claim 1;
providing three appropriately positioned latch receptor slots which receive the three latch portions of the cam when the cam is in the initial position, and allow the latch portions to rotate therefrom when the cam turns less than 90 degrees when the key is turned generally 90 degrees;
thereby securing the door on each of its three unhinged sides with a generally available and inexpensive keyed lock of the type that turns generally 90 degrees.
comprising the steps of:
providing a keyed cylindrical lock of the type having an inner rotating cylinder which longitudinally receives a key on an outer end, and has an opposite end rotating a non-circular inner end portion which rotates clockwise and generally no more than 90 degrees from an initial position when the key is turned, said rotating inner cylinder positioned within an outer stationary cylinder having an external thread, and a flat side portion for non-rotatable mounting;
cutting a hole through a central portion of the swinging rectangular door, said hole having a peripheral flat side portion to matably receive the outer stationary cylinder having a flat side portion for positioned non-rotatable mounting;
mounting the keyed cylindrical lock within the hole through the swinging rectangular door;
providing the tri-sided lock and latch mechanism as specified in claim 1;
providing three appropriately positioned latch receptor slots which receive the three latch portions of the cam when the cam is in the initial position, and allow the latch portions to rotate therefrom when the cam turns less than 90 degrees when the key is turned generally 90 degrees;
thereby securing the door on each of its three unhinged sides with a generally available and inexpensive keyed lock of the type that turns generally 90 degrees.
14) A method as in claim 13 wherein the door is for a mailbox and further comprising the additional steps of:
extruding the door;
providing a longitudinal hinge pin opening on an inner side of the door, and wherein a longitudinal opening along the extruded hinge pin opening, generally necessary in the extrusion process, runs along an inner side of the longitudinal opening, rather than a back side of the longitudinal opening, so that it is more difficult to pry the extruded door off the vertical hinge pin.
extruding the door;
providing a longitudinal hinge pin opening on an inner side of the door, and wherein a longitudinal opening along the extruded hinge pin opening, generally necessary in the extrusion process, runs along an inner side of the longitudinal opening, rather than a back side of the longitudinal opening, so that it is more difficult to pry the extruded door off the vertical hinge pin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201214093486A | 2012-11-30 | 2012-11-30 | |
| US14/093,486 | 2012-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2835025A1 true CA2835025A1 (en) | 2014-05-30 |
Family
ID=50820062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2835025 Abandoned CA2835025A1 (en) | 2012-11-30 | 2013-12-02 | Tri-sided lock and latch mechanism for a hinged swinging door |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2835025A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112617539A (en) * | 2020-11-30 | 2021-04-09 | 周剑宇 | Accounting document data display device |
| CN113598547A (en) * | 2021-08-21 | 2021-11-05 | 尤洛卡(山东)数字科技有限公司 | Multifunctional storage cabinet door structure |
-
2013
- 2013-12-02 CA CA 2835025 patent/CA2835025A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112617539A (en) * | 2020-11-30 | 2021-04-09 | 周剑宇 | Accounting document data display device |
| CN112617539B (en) * | 2020-11-30 | 2022-12-20 | 周剑宇 | Accounting document data display device |
| CN113598547A (en) * | 2021-08-21 | 2021-11-05 | 尤洛卡(山东)数字科技有限公司 | Multifunctional storage cabinet door structure |
| CN113598547B (en) * | 2021-08-21 | 2022-10-04 | 尤洛卡(山东)数字科技有限公司 | Multifunctional storage cabinet door structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6477872B1 (en) | Locking mechanism for storage units | |
| US4073172A (en) | High security deadbolt lock | |
| US20070085352A1 (en) | Door latch | |
| FI80118C (en) | INFAESTNINGSANORDNING FOER CYLINDERLAOS. | |
| US8220296B2 (en) | Locking assembly hasp | |
| US20130000369A1 (en) | Deadbolt locking device | |
| US5775145A (en) | Lock assembly having a key operated removable plug | |
| US20160160532A1 (en) | Security Locking Device for Enclosure Covers | |
| US10184268B2 (en) | Security swing handle assembly | |
| US20150297013A1 (en) | Theft-Resistant Wall Mount Mailbox | |
| US9062475B1 (en) | Roseless trim for architectural hardware | |
| US5873272A (en) | Display case lock mechanism with front-assembled core | |
| US8925361B2 (en) | Anti-theft device for an access door | |
| US11608658B1 (en) | Padlock security 3 | |
| CA2835025A1 (en) | Tri-sided lock and latch mechanism for a hinged swinging door | |
| US11319730B1 (en) | Padlock security 2 | |
| US3853343A (en) | Burglarproof chain guard | |
| EP2508698B1 (en) | A door lock | |
| US8561440B1 (en) | Pivoted cover lock | |
| KR20060043574A (en) | Lock assembly of handle for door | |
| US6866309B1 (en) | Security bolt latch apparatus and method | |
| US6484542B1 (en) | Door handle lock | |
| US4528829A (en) | Compound lock for baggage or parcel lockers and the like | |
| US2991643A (en) | Key locking adapter for mortise extension bolts | |
| US20140246871A1 (en) | Lock hasp apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20161202 |