US3353383A - Door locking means - Google Patents

Door locking means Download PDF

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Publication number
US3353383A
US3353383A US419477A US41947764A US3353383A US 3353383 A US3353383 A US 3353383A US 419477 A US419477 A US 419477A US 41947764 A US41947764 A US 41947764A US 3353383 A US3353383 A US 3353383A
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US
United States
Prior art keywords
door
latch
combination
lever
bolt
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 - Lifetime
Application number
US419477A
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English (en)
Inventor
Aaron M Fish
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
A M FISH HOLDINGS Ltd
Original Assignee
A M FISH HOLDINGS Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by A M FISH HOLDINGS Ltd filed Critical A M FISH HOLDINGS Ltd
Priority to US419477A priority Critical patent/US3353383A/en
Priority to FR39922A priority patent/FR1454915A/fr
Priority to DE19651728381 priority patent/DE1728381A1/de
Priority to DE19651553338 priority patent/DE1553338A1/de
Priority to CH1660165A priority patent/CH439000A/de
Priority to BE673186D priority patent/BE673186A/xx
Priority to GB19980/68A priority patent/GB1128039A/en
Priority to GB52050/65A priority patent/GB1128038A/en
Priority to NL6516144A priority patent/NL6516144A/xx
Priority to SE16202/65A priority patent/SE309925B/xx
Application granted granted Critical
Publication of US3353383A publication Critical patent/US3353383A/en
Priority to NL7208973A priority patent/NL7208973A/xx
Priority to NL7208974A priority patent/NL7208974A/xx
Priority to NL7208972A priority patent/NL7208972A/xx
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B37/00—Permutation or combination locks; Puzzle locks
    • E05B37/16—Permutation or combination locks; Puzzle locks with two or more push or pull knobs, slides, or the like
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B45/00—Alarm locks
    • E05B45/06—Electric alarm locks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B59/00—Locks with latches separate from the lock-bolts or with a plurality of latches or lock-bolts
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00658—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys
    • G07C9/00674—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with switch-buttons
    • G07C9/0069—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with switch-buttons actuated in a predetermined sequence
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B37/00—Permutation or combination locks; Puzzle locks
    • E05B37/0075—Automatic scrambling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5093—For closures
    • Y10T70/5155—Door
    • Y10T70/5199—Swinging door
    • Y10T70/5372—Locking latch bolts, biased
    • Y10T70/5385—Spring projected
    • Y10T70/5389—Manually operable
    • Y10T70/55—Dogged bolt or connections
    • Y10T70/5504—Automatic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5093—For closures
    • Y10T70/5155—Door
    • Y10T70/5199—Swinging door
    • Y10T70/5372—Locking latch bolts, biased
    • Y10T70/5531—Combination and/or key operable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7153—Combination
    • Y10T70/7316—Combination upsetting

Definitions

  • An electrically operated system associated with the latch and lock mechanisms provides safeguards which are automatically activatable to indicate and/ or defeat unauthorized attempts to disable the system and/or to decode the combination lock mechanism, while permitting authorized operation of the door latch mechanism under the control of the combintion lock mechanism entirely without dependence upon the electrically operated system.
  • This invention relates to locking devices generally, and has more particular reference to maximum security locking means for doors and the like.
  • this invention provides lock means for a door, featuring a combination lock mechanism that must be properly decoded before a latch operating member can be actuated to free the door for opening, and wherein the combination can be automatically cancelled as a consequence of reclosure of the door.
  • Another purpose of the invention resides in the provision of lock means of the character described incorporating an electrical control system by which the combination lock can be rendered inoperative in emergencies, and which normally functions to cancel the combination after decoding thereof has commenced, if such decoding does not eventuate in opening of the door within a predetermined period of time.
  • Still another purpose of the invention resides in the provision of door locking means of the character described, wherein the electrical control system functions to produce a signal at a remote location whenever the door is opened, and to produce other signals or alarms whenever any attempt is made to jam the door latch mechanism while the door is open, or to defeat the electrical control system from within the restricted area by cutting or jumpering of its leads.
  • the decoding or indexing means of the combination lock along with its latch operating member are located on the outside of the door closing off access to a restricted area, and that the leads of the electrical control system are at the inner side of the door and may run to a control box remote from the door.
  • a further purpose of this invention resides in the provision of door locking means of the character described featuring novel door latch mechanism which is controlled by the combination lock mechanism, and cooperates therewith to achieve an exceptionally high degree of security against unauthorized opening of the door.
  • FIGURE 1 is a fragmentary elevational view of a door having the locking means of this invention mounted thereon, showing the outside of the door in the closed and locked position thereof;
  • FIGURE 2 is a view similar to FIGURE 1 but viewing the inside of the door;
  • FIGURE 3 is an enlarged view corresponding to FIG- URE 1, but having portions of the door broken away to show the latch mechanism in its interior;
  • FIGURE 4 is a view similar to FIGURE 3 but showing the operation of the latch mechanism at the time the door is opened;
  • FIGURE 5 is a view similar to FIGURE 4, but showing both the dead bolt and the latch bolt in the projected positions which they occupy at the time the door is to be reclosed;
  • FIGURE 6 is a sectional view through the latch mechanism, taken on the plane of the line 6-6 in FIGURE 5;
  • FIGURE 7 is a sectional view taken through FIGURE 5 on the plane of the line 7-7;
  • FIGURE 8 is a sectional view of the latch mechanism taken through FIGURE 6 on the plane of the line -8-8;
  • FIGURE 9 is a sectional view taken through FIGURE 2 on the plane of the line 99;
  • FIGURE 10 is a sectional view taken through FIGURE 2. on the plane of the line 1010, and at an enlarged scale;
  • FIGURE 11 is an electrical diagram showing the safety control system for the locking means of this invention.
  • the numeral 10 generally designates a door that may be hinged at one vertical edge for swinging movement to and from a closed position in a door jamb 11, to block access when locked, to a restricted area such as a laboratory or other room containing valuable equipment.
  • the locking means of this invention is shown by way of example as mounted on the door, at its free edge portion, and comprises a combination or permutation lock mechanism generally designated 12 having its indexing means 13 exposed on the outer side of the door, and a latch mechanism generally designated 14 mounted in the door and controlled by the combination lock mechanism 12.
  • Coaxial knobs 15 and 16 are also mounted on the door, one at each side thereof, and while the knob 16 on the outer side of the door is fixed against rotation, the inner knob 15 is at all times operable to retract a latch bolt 17 from an operative projected position such as seen in FIGURE 3 to free the door for opening. In its projected position, the outer end 18 of the latch bolt projects into a hole 19 in a strike 20 on the door jamb to hold the door closed.
  • a controller bolt 21 forming part of the door latch mechanism is cammed inwardly of the door by the strike 20, to an operative retracted position such as seen in FIGURE 3, at which it operates to prevent retraction of the latch bolt except by actuation of the knob or by proper manipulation of the combination lock mechanism.
  • the combination or permutation lock mechanism here shown is of the type known in the trade as a Simplex" lock, the indexing means 13 of which is provided by five push buttons arranged in a row and located one above the other on the door, and a rotatable latch operating lever 23.
  • the lever is biased by a centering spring, not shown, to a normal or neutral position seen in FIGURE 1, and it can be turned in the clockwise direction only after the proper number of buttons 13 has been depressed in a predetermined sequence, to effect retraction of the latch bolt 17.
  • the latch bolt 17 can thus be retracted from the outer side of the door independently of the knob 15 on the inner side of the door.
  • the combination or permutation lock mechanism of the type mentioned above also has an indexing or coding shaft 25, which projects from one end of the mechanism and which is rotated incrementally in one direction from a predetermined start position in correspondence with depression of each push button.
  • this invention takes advantage of the fact that the indexing shaft 25 can be returned to its start position at any time to effect cancellation or scrambling of the combination independently of the latch operating lever 23 and to accordingly reset the mechanism of the combination lock.
  • the indexing shaft also returns to its start position in consequence of turning of the latch operating lever 23 to a predetermined resetting position, as for example, by rotating the same in the counterclockwise direction from its neutral position seen in FIGURE 1.
  • the latch mechanism 14 is housed within a substantially narrow casing 27 that is fixed within the free edge portion of the door in a conventional manner, with its face plate 28 flush with the free edge of the door.
  • the face plate In the closed position of the door, of course, the face plate is directly opposed to the strike 20, and the outer end 18 of the latch bolt projects through a hole 29 in a lower portion of the face plate for engagement in the hole 19 in the strike.
  • the latch bolt 17 is supported in the casing for back and forth translating motion along a path normal to the face plate 28 and intersecting the axis of the knobs 15-16 partly by the engagement of its outer end portion 18 in the hole 29 in the face plate, and partly by its cooperation with a hub structure carried by the opposite side walls 30 and 31 of the casing.
  • This hub structure comprises a rotatable hub 32 having a reduced outer portion journalled in a bearing 33 formed on the side wall 31 of the casing which is adjacent to the inner side of the door, and a fixed hub 34 likewise having a reduced outer portion received in a bearing 35 formed on the outer side wall 30 of the casing.
  • the hub 34 is held against rotation by means of a pin 36 on the casing, extending transversely thereacross at the side of the hub structure remote from the face plate 28 and projecting through a hole 37 in an arm 38 fixed to the hub 34.
  • the rotatable hub 32 also has an arm 39 afiixed thereto, a portion of which extends toward the face plate 28 and rotatably carries an idler disc 40, the periphery of which is grooved to receive the opposite legs 41 of a torsion type centering spring 42 having its main portion loosely coiled about the pin 36.
  • the legs 41 of the spring are arched outwardly around the hub structure to loosely embrace the same, and thus assure that their free end portions will be in engagement with diametrically opposite sides of the grooved idler disc to yieldingly resist rotation of the inner knob 15 in either direction and to return the hub 32 to its centered position shown in FIGURE 3 when the knob is released.
  • the inner end of the rotatable hub 32 is also reduced, and it is rotatably received in a counterbore in the adjacent inner end of the fixed hub 34 so that the hubs tend to support one another.
  • the stems 43 of the door knobs are here shown as having square cross sections, and their inner ends are received in correspondingly shaped holes 44 in the hubs.
  • the inner end of the latch bolt 17 is provided with spaced upper and lower bifurcations 45 which loosely slidingly embrace exterior portions of both hubs 32-34 and thus cooperate with the sliding fit of its head 18 in the hole 29 in the face plate to guide the latch bolt for endwise back and forth movement along a path normal to the face plate.
  • pads 46 may be formed on opposite sides of the bifurcations 45 to provide bearing, surfaces of substantial area for sliding engagement witln the hubs, and these pads may also slidingly engage bearing projects 47 on the opposite side edges of the arm 38 of the fixed hub 34.
  • the latch bolt is flatwise: received between the arm 39 on the rotatable hub 32, and another arm 48 that projects downwardly in the casing; and through the bottom wall 49 thereof, in which it is.- guided for vertical translating motion for a purpose to be described later.
  • the arms 39 and 48 cooperate: to confine the latch bolt against excessive sidewise motions in the casing.
  • the latch bolt is yieldingly biased to itsprojected position seen in FIGURE 3 and defined by the engagement of its pads 46 with shoulders 50 on the hub arm 39.
  • This bias is afforded by a torsion spring 51loosely coiled about a cross pin 52 in the lower portion of thecasing, having one end 53 bearing against the bottom wall 49 of the casing and its other end 54 connected with the bolt as at 55.
  • the controller bolt 21 is supported for back and forth translating movement along a path parallel to the path of motion of the latch bolt, but spaced a substantial distance thereabove. It also has an enlarged head 57 which is slidingly received in a hole 58 in the face plate 28, through which the head extends in the door open and projected position of the bolt seen in FIGURE 5.
  • the edges of the hole 58 thus cQQpBrate with a lug 59 on the inner side wall 31 of the casing, which engages in a slot 60 in the dead bolt, to guide the bolt for back and forth motion between its extended position and itsv operative retracted position seen in FIGURE 3, to which it is cammed by the strike when the door is closed.
  • the inner end portion of the controller bolt is flatwise slidingly confined between an internal boss 61 on the inner side wall 31 of the casing, and the upward extending arm 62 of a latch control lever 63 which is pivotally mounted on a cross pin 64 on the casing for rocking motion about a transverse axis slightly above the latch bolt 17 and only a short distance inwardly of the face place 28.
  • the latch control lever is yieldingly biased in the clockwise direction about its pivot toward a normal position defined by the engagement of its upper arm 62 with a stop 65 on the casing.
  • a torsion spring 66 provides this bias. It is coiled about the pivot pin 64 and has one leg 67 anchored in a hole 68 in the inner side wall 31 of the casing, and its other leg 69 bears against that edge of the lever arm 62 which opposes the face plate 28.
  • the lever 63 has a second arm 70 which extends sub stantially horizontally from the pivot pin 64, away from the face plate 28 and over the upper edge of the latch bolt to the rear of the later.
  • This second arm 70 of the lever terminates in a hook 71 which extends downwardly behind the latch bolt 17 and normally blocks retracting movement of the latter as long as the controller bolt is in its operative retracted position which it occupies when the door is closed.
  • the purpose of the hook 71 on the latch control lever 63 is to prevent unauthorized retraction of the latch bolt by the blade of a case knife or the like inserted into the slight clearance space between the strike 20 and the face plate 28.
  • the controller bolt 21 is also yieldingly biased away from its retracted position seen in FIGURE 3, in which it is held by the strike 20 on the door jamb, toward a projected position seen in FIGURE 5 which it occupies when the door is opened.
  • a lug 73 on the side of the dead bolt at its rear is brought into engagement with an adjacent edge portion 74 on the upper arm 62 of the latch control lever to hold the same in a position at which the hook 71 on the lever clears the rear of the latch bolt 17 to enable the latter to be retracted.
  • Such biasing force is exerted on the controller bolt by means of a torsion spring 75 which is loosely coiled about a transverse pivot pin 76 in the casing, located just above the controller bolt 21 and near the face plate 28.
  • a torsion spring 75 which is loosely coiled about a transverse pivot pin 76 in the casing, located just above the controller bolt 21 and near the face plate 28.
  • One leg 77 of the spring is anchored in a hole 78 in the inner side wall 31 of the casing, and its other leg 79 bears against the rear edge of a lever 80 rockably mounted on the pivot pin 76 and extending downwardly therefrom across the controller bolt directly behind its head 57.
  • the spring tends to rock the lever 80 clockwise about the pin 76, and its force is transmitted into bias on the controller bolt tending to urge it to its projected position through the engagement of a step 81 on the lever with a rearwardly facing abutment 82 on the head 57 of the controller bolt.
  • the projected position of the controller bolt is defined by the engagement of the lug 59 with the inner end of the slot 60 in the bolt.
  • the latch operating lever 23 on the combination lock mechanism 12 is operable to effect retraction of the latch bolt 17 when the operating lever 23 is turned in the clockwise direction from its neutral position seen in FIGURE 1.
  • the shaft 83 to which the lever 23 is fixed is drivingly connected with a cam 85 that is rotatably journalled in a bearing boss 86 on the outer side wall 30 of the casing for rotation on a transverse axis intersecting the rear of the controller bolt and ahead of the lug 73 on its extremity.
  • the cam 85 overlies the side of the lever arm 62 remote from the controller bolt, and is preferably connected with the latch operating lever 23 through the shaft 84 of a disc type coupling device 87 that compensates for axial misalignment between the combination lock and latch mechanisms.
  • the cam 85 is provided with a drive abutment 88 which, in the door closed and locked condition of the latch mechanism seen in FIGURE 3, directly opposes a rearwardly facing edge surface 89 on the upper arm 62 of the latch control lever 63, so that turning of the latch operating lever in the clockwise direction described rotates the cam 85 in the clockwise direction to in turn rock the lever 63 in the counterclockwise direction about its pivot pin 64.
  • a drive abutment 88 which, in the door closed and locked condition of the latch mechanism seen in FIGURE 3, directly opposes a rearwardly facing edge surface 89 on the upper arm 62 of the latch control lever 63, so that turning of the latch operating lever in the clockwise direction described rotates the cam 85 in the clockwise direction to in turn rock the lever 63 in the counterclockwise direction about its pivot pin 64.
  • its hook 71 is lifted clear of the rear of the latch bolt 17 to free the same for retraction.
  • the latch operating lever acts through the cam 85 to carry a driver 90 on the lever 63 into driving engagement with a forwardly facing abutment 91 on the latch bolt to move the same rearwardly to its retracted position.
  • the driver 90 is formed as a finger on the extremity of a third arm 92 on the latch control lever 63, which third arm extends downwardly and slightly forwardly across the latch bolt at the side thereof adjacent to the outer side wall 30 of the casing.
  • the latch operating lever 23 on the combination lock mechanism 12 acts through the cam 85, the driving abutment 88 on the cam and the latch control lever to first free the latch bolt of the obstruction normally provided by the hook 71 on the control lever during initial rotation of the operating lever 23 in the clockwise direction, and that continued rotation thereof in the same direction effects retracting movement of the latch bolt to its position seen in FIG- URE 4, at which the door may be opened by pulling on the fixed knob 16 on the exterior of the door.
  • While the latch bolt 17 may thus be retracted from the outer side of the door, by a person having knowledge of the proper combination of the lock mechanism 12, it can also be opened at any time, from the inner side of the door, merely by turning the rotatable knob 15 in a clockwise direction as viewed in FIGURE 3. This swings the arm 39 on the rotatable hub 32 upwardly to effect tilting of the latch control lever 63 in the counterclockwise direction as seen in FIGURE 3, to first lift the hook 71 away from the rear of the latch bolt and to then drive the latch bolt into the casing through the engagement of the driver 96 on the lever with the abutment 91 on the latch bolt.
  • Such pivotal motion is imparted to the latch control lever by the rotatable knob 15 through an upward extension 94 on the arm 39 of the movable hub 32, and one of a pair of identical gabled ledges 95 on the opposite sides of the horizontal arm 70 of the latch control lever.
  • the extension engages the underside of its gabled ledge 95, at the apex thereof, preferably in an indentation 96 at said apex.
  • the arm 39 can have a second downward extension 94' symmetrical with the first to serve the same purpose as the firs-t in the event the knobs 15 and 16 and their hubs are reversed for doors of opposite hand, whereby the same hub assemblies can be used with either right hand or left hand doors.
  • the cam 85 is formed with a step 97 on its underedge, to provide a shoulder 98 on the cam, facing forwardly toward the face plate, against which force can be applied during closure of the door to turn the cam and the latch operating lever 23 connected therewith in the counterclockwise direction necessary to reset and cancel the combination of the lock mechanism 12.
  • Such force is applied to the shoulder 98 on the cam through a link 99 having its forward end pivotally connected as at 100 with the lower end of the controller bolt biasing lever 80, and extending substantially horizontally rearwardly therefrom toward the cam 85.
  • This link is yieldingly biased by a torsion spring 101 connecting it with the lever 80, to turn in a counterclockwise direction on its pivotal connection 160, so as to maintain the link engaged with the periphery of the cam 85 from the underside thereof.
  • the controller bolt When the door is open, as seen in FIGURE 5, the controller bolt is in its projected position, and its biasing lever 80 is in a forward position on its pivot 76 at which it holds the link 99 with its rear extremity seated upon the step 97 of the cam, and in confronting relation to the shoulder 98 on the cam.
  • the controller bolt when the door is reclosed and the controller bolt is cammed inwardly of the door by the strike, it swings its bias lever 80 rearwardly thereby driving the link endwise rearwardly against the shoulder 98 on the cam to impart the counter-clockwise rotary move ment to it and the latch operating member 23 connected therewith necessary to cancel the combination of the 7 lock 12 and reset its mechanism.
  • the link 99 is disengaged from and moves past the shoulder 98 after the cam has been rotated through the substantially small angle necessary to cancel the combination.
  • Such disengagement of the link from the shoulder is effected by the peripheral portion of the cam ahead of the step 97. Consequently, when the link rides rearwardly past the cam shoulder, the centering spring acting on the latch operating lever 23 returns the cam to its normal position seen in FIGURE 3, which illustrates that the link is then held engaged with the peripheral portion of the cam behind its shoulder 98 when the dead bolt is fully retracted.
  • the coupling device 87 is provided with a torsion type centering spring 103 separate from that incorporated in the combination lock mechanism to bias the latch operating lever 23 to its neutral position.
  • the centering spring 103 is available to return the latch operating lever to neutral from its latch retracting position, thus assuring against the possibility of the combination lock mechanism remaining in an unlocked condition.
  • the arm 48 mentioned earlier projects upwardly beyond the latch bolt to have its upper extremity in motion transmitting relation to the other gabled ledge 95 on the horizontal arm 70 of the latch control lever 63, to effect retraction of the latch bolt in the same way as the arm 39 and its upward extension 94, during upward movement of the arm 48.
  • the arm 48 is not an essential component of the latch mechanism, and should be regarded as optional, to be provided whenever still another means of retracting the latch bolt is desired.
  • the lower end portion of the arm 48 projects downwardly out of the bottom of the casing through a slideway 105 formed thereon, and which serves to guide the arm for up and down motion.
  • the lower end 106 of the arm rests on the drive arm 107 of a cylinder lock that is accessible for key actuation from the outer side of the door, whereby the arm 48 can be moved upwardly in consequence of key produced rotation of the drive arm 107 in the clockwise direction as viewed in FIGURE 3, to effect rocking of the control lever 63 in the direction to retract the latch bolt.
  • the drive arm 107 is returned to its normal locked position shown, the arm 48 moves downwardly partly by gravity and partly by the force of the spring 66 acting on the latch control lever 63.
  • combination lock mechanisms of the type herein described incorporate means by which their combinations can be changed. This, of course, entails manual manipulation of a combination change member, not shown, on the lock mechanism. According to the present invention access to the, combination change member is afforded in an exceptionally simple manner while at the same time allowing such access to only a person authorized to change the combination.
  • the door plate 110 on the outside of the door has a stud 111 which is fixed to its inner surface and projects into the door to have its threaded extremity near the door plate 112 on the inner side of the door, in alignment with a hole 113 in the plate 112.
  • a cylinder lock 114 is mounted in the hole 113 and fixed on the door plate 112 to releasably lock it against detachment from the door.
  • the cylinder 115 of the lock is of the type having tumblers not shown, that can be retracted to free the cylinder for unlimited rotation in its casing and for endwise displacement therefrom in consequence of insertion of a proper key 116 into the cylinder.
  • the key when the key is inserted into the cylinder, it can be rotated in the direction to back off a nut 117 on its rear from the threaded extremity of the stud 111 to thus unlock the door plate 112 from the door.
  • the cylinder lock 114 may be used in conjunction with plate retaining screws of a conventional type, and which must also be removed before the door plate can be detached to provide access to the change member of the combination lock mechanism.
  • the switch 118 is a normally open reed switch that is mounted close to the face plate 28 about midway between the latch and controller bolts, to be in the magnetic field of a permanent magnet 121 embedded in the door jamb when the door is closed. Its reed contactor 122 is thus normally held in an attracted switch closing position whenever the door is closed, and this switch opens whenever the door is opened.
  • the switch 119 is also of the normally open type. It is mounted adjacent to the rear of the controller bolt 21, which engages the actuator 123 of the switch to hold it in a switch closed position as long as the latch bolt is in its retracted (door closed) position.
  • the switch 119 opens in consequence of movement of the controller bolt to its projected position when the door is opened.
  • the third switch 120 is of the normally closed type. It is mounted adjacent to the rear of the latch bolt 17, and its actuator 124 is engaged by the latch bolt during initial retracting movement thereof to effect opening of the switch.
  • a fourth switch 126 of the normally open type, is mounted on the inner side of the outer door plate 110, with its actuator 127 in position to be acted upon by a cam disc 128 fixed on the projecting end of the indexing or coding shaft 25.
  • the cam disc is designed to depress the actuator 127 and close this switch during rotary indexing motion of the coding shaft in consequence of depression of an indexing button 13 on the combination lock mechanism.
  • An electromagnetic torque motor 130 is also mounted on the inner side of the outer door plate 110, alongside the cam disc 128. It has an armature 131 that is constrained to rotate on a horizontal axis, crosswise of the coding shaft 25, and a disc 132 fixed on the armature has a drive arm with a finger 133 that extends across the periphery of the cam disc 128 for engagement with a radial abutment 134 on the cam. This abutment is normally spaced a distance from the finger 133, and it is moved toward the finger during indexing motion imparted to the coding shaft in consequence of depression of the push buttons 13.
  • the electrical instrumentalities described thus far constitute components of an electrical control system shown in schematic form in FIGURE 11.
  • the disc 132 described above has been shown as a lever which pivots about the axis of a shaft 135 having the drive finger 133 eccentrically formed thereon.
  • a branch 142' of the first conductor 142 leads serially through the door switches 118, 119 and 120 and joins with the fourth cable conductor 147, which is connected to the terminal T4.
  • the terminal T1 is connected by a conductor 148 with one line L1 of a pair of supply lines L1 and L2.
  • the terminal T2 is connected by a conductor 149 with the other supply line L2 through the normally open contacts of a time delay relay 150 having a contactor 151.
  • the terminal T3 is commonly connected by a conductor 152 with one end of the coil 153 of the time delay relay 150, and with one stationary contact 154 of an electromagnetic switch 155.
  • the terminal T4 is connected by a conductor 156 with one end of the solenoid 157. of the electromagnetic switch 155, through other electrical instrumentalties to be described later and in series with the solenoid 157.
  • the other end of the coil 153 of the time delay relay 150 is connected to line L2 through a conductor 158, so that the coil will be energized whenever the cam operated switch 126 is closed.
  • the solenoid 157 of electromagnetic switch 155 is energized by a circuit leading from line L1 through conductor 142 and the door switches 118119120, and conductors 147 and 156 to one end of the solenoid of the electromagnetic switch 155, and from the other end of the solenoid through a conductor 160 to line L2.
  • the switches 118, 119 and 126 will be closed as described earlier, to complete the energizing circuit for the solenoid of switch 155.
  • the contactor 161 of the switch When thus energized, the contactor 161 of the switch bridgingly engages the stationary contact 154 and a cooperating contact 154' and is disengaged from a pair of cooperating stationary contacts 162 and 162 of the switch 155.
  • the contacts 162 and 162' are engaged by the contactor 161 of the switch when its solenoid is deenergized, to activate a signal circuit containing the door open signal lamp 140.
  • the signal lamp 140 is inoperative as long as the contactor 161 of the switch 155 is held off of the contacts 162-162, which is the case as long as the door 10 is closed and properly locked.
  • All three switches 118, 119 and 120 open when the door 10 is opened, to break the circuit for the solenoid of switch 155 and allow the contactor 161 thereof to descend and bridge the contacts 162-162.
  • the signal circuit through the door open signal light 146 is completed via the conductor 160, the contactor 161 of switch 155, and a conductor 163 leading to Line L1 through the light 140.
  • an energizing circuit is completed for atime delay relay 164.
  • This circuit comprises the conductor 160, which is connected to line L2 at one end and to switch contact 162 at its other end, a conductor 166 connecting the stationary switch contact 162' with one terminal of the relay 164, and a conductor 167 connecting the other terminal of the relay with line L1.
  • the contactor 165 of the relay 164 moves to its switch closing position when the relay is energized in the manner described, only if the door is left open for longer than a predetermined period of time, or if the cable 137 is cut, which of course, results in deenergization of the coil of switch 155 in the same way as opening of the door.
  • the lamp 140 will serve as a signal each time the door 10 is opened. This signal will also be made even through the door 19 is closed, in the event the latch bolt 17 has been jammed in its retracted position by a person attempting to defeat the latch mechanism. In that case, the solenoid of switch 155 will be deenergized due to the open condition of the switch 120 controlled by the latch bolt, to elfect signalling that the 10 lock mechanism of this invention has been tampered with and is not functioning as intended.
  • the contactor of the time relay 164 closes to activate door open alarm instrumentalities which include the alarm signal light 139, and a relay 250.
  • the light 139 and the relay 250 are connected in parallel and are energized together in a manner which is obvious from the diagram.
  • the alarm 138 is provided to afford audible evidence of tampering with the cable 137 leading to the door 10, either by persons attempting to jumper its terminals or to otherwise defeat the electrical control system as by cutting the cable.
  • Energization of the alarm 138 is controlled by a relay which is energized to activate the alarm as a consequence of jumpering of the terminals T1 and T4 in a way that would prevent the door open signal from functioning even though the door 10 were forced open.
  • the coil of relay 171) is connected in series with the coil 157 of electromagnetic switch 155, by conductor 156.
  • a variable resistance 174 in the conductor 142' cooperates with another variable resistance 173 in the conductor 156 to normally limit current flow through the coil of relay 170 and maintain it to a value insuflicient to effect response of its contactor 176.
  • terminals T1 and T4 are connected by a jumper, the variable resistor 174 is shunted out of the circuit and a current sufficient to effect response of the contactor 176 of relay 170 fiows therethrough.
  • the contactor 176 of relay 170 When the contactor 176 of relay 170 is brought into engagement with the normally open relay contact 177, it completes an energizing circuit for the alarm 138, here shown by way of example as a bell which is energized by a separate source of E.M.F., such as a battery 252.
  • the contactor 176 is connected to terminal A of the bell by a conductor 178, and the relay contact 177 is connected by a conductor 179 with battery terminal B.
  • a conductor 180 connects the other terminals of the bell and battery.
  • switch 155 If the current is interrupted in conductor 156 for any reason, the resulting deenergization of switch 155 effects energization of signal light 1140, relay 164, alarm light 139, and relay 250, so that the latter will in turn effect energization of the alarm 138.
  • contactor 254 of relay 250 is connected to bell terminal A, while its stationary contact 255 is connected to battery terminal B.
  • a particularly desirable feature of the electrical control system is that it provides for automatically cancelling or scrambling of the combination of the combination lock mechanism in the event the door 10 is not opened within a predetermined period of time following initial indexing of the combination, and for energization of the wrong combination signal light 141 in the event of repeated attempts to decode the combination lock mechanism experimentally.
  • the coding or indexing shaft 25 is rotated incrementally in one direction from a predetermined start position in consequence of depression of each push button 13 on the combination lock mechanism, and that this shaft can be rotated in the opposite direction to its start position to etfect resetting of the lock mechanism, or scrambling of its combination.
  • this shaft is rotated through a predetermined angle from its start position, as by depression of one or more of the push buttons 13, the cam 128 on the shaft engages the actuator of the switch 126 to close the same.
  • the switch 126 controls the energizing circuit for the time delay relay 150, and when the switch is closed by the cam 128, the time delay relay coil 153 is energized but its contactor does not respond and close the switch contacts of this relay until after a predetermined time interval has elapsed.
  • This time interval is of such duration as to normally allow an authorized person sufficient time to decode the combination and open the door.
  • the step relay advances its contactor 186 a first increment toward a pair of stationary relay contacts 187-187, to dispose the contactor in an intermediate position 188 between its normal position and an operative position bridging the stationary contacts 187-187 of the relay.
  • the opening of the door mounted switches 118-119-120 breaks the energizing circuit for the coil of switch 155 and the contactor thereof falls away from engagement with the stationary switch contacts 154-154 and into bridging engagement with the second pair of contacts 162-162 of this switch.
  • This breaks the circuit for the coil 182 of the step relay 183 and effects resetting of the contactor 186 of the step relay to its start position shown in solid lines in the diagram.
  • the resetting of the step relay results from completion of an energizing circuit through the reset coil 200 of the relay in consequence of deenergization of the coil of switch 155.
  • This circuit comprises the conductor 282 which connects with line L1 and leads to one end of the reset coil 208, a conductor 201 which is joined to the conductor 166, the contactor 161 of switch 155 then in engagement with contacts 162-162, and the conductor 160 leading to line L2. It is a feature of this invention that the reset coil 200 can never be energized simultaneously with the step coil 182 of the step relay, since each coil can only be energized through the contactor 161 of the switch 155.
  • the reset coil 200 of the step relay will be energized to return the contactor of the step relay to its start position and, of course, the signal lamp 141 will also be energized as described earlier, to indicate that the door is open.
  • the contactor 151 of the time delay relay 150 is carried to its switch closing position to effect energization of the torque motor 130 and return of the coding shaft 25 to its start position to thus cancel or scramble the combination of the combination lock mechanism.
  • the energizing circuit for the torque motor 130 comprises one branch of the conductor 142 connecting with one terminal of the motor, conductor 144 which is connected to the other terminal of the torque motor, the contactor 151 of the time delay relay 150, and conductor 149 which leads to line L2.
  • the time delay relay is deenergized by opening of the switch 126 as soon as the coding shaft and the cam 128 thereon are returned to their start positions.
  • the contactor 186 of the step relay 183 will remain in its intermediate position designated by 188.
  • the cam 128 on the coding shaft 25 will again effect closure of the switch 126, to thereby again energize the coil 182 of the step relay 183 and move its contactor 186 the final increment necessary to bridge the stationary relay contacts 187- 87.
  • an energizing circuit is completed for the coil of an alarm relay 203, the contactor 204 of which then moves from a normal switch open position into engagement with a stationary switch contact 285 to set off the alarm 138.
  • the energizing circuit for the coil of the alarm relay 2873 leads from line L1 through conductors 282 and 206 to contact 187 of the step relay, the contactor 186 of the step relay, a conductor 207 connecting contact 187 of the step relay with one terminal of the alarm relay, and a conductor 208 connecting the other terminal of the alarm relay with line L2.
  • the signal light 141 being connected in parallel with the relay 203, is also energized at this time.
  • the energizing circuit for the alarm 139 is completed through conductors which connect contactor 204 with terminal A of the bell 138, and stationary contact 205 with terminal B of the battery 252.
  • the step relay has here been shown and described by way of example as having a contactor which must be advanced twice before it effects energization of the alarm circuit. It may, of course, be set to require advance of its contactor three or more times, if desired, before the alarm circuit is energized. It is important to observe that the step relay 183 responds and advances each time an attempt is made to decode the combination lock mechanism due to the fact that the switch 126 is closed at the time each such attempt is made.
  • a switch 260 is provided.
  • the switch 260 is connected across the stationary contacts of the time delay relay 150, to effect energization of the solenoid motor whenever the switch is closed. Hence, if switch 260 remains closed, the solenoid motor can remain energized to prevent the coding shaft 25 from moving in consequence of force applied manually to the push buttons.
  • this invention provides a door locking system providing unusual security against entry into a restricted area such as a laboratory or the like containing valuable equipment that must be protected against tampering or examination by unauthorized persons especially if such equipment is of a classified nature.
  • Door locking means comprising the combination of:
  • a pivoted latch retracting lever having a part thereon which blocks retracting movement of the latch bolt except when the lever is swung in one direction about its pivot out of a normal position
  • the latch mechanism includes a controller bolt movable between retracted and projected positions and biased toward the latter;
  • said combination type door lock mechanism includes a coding element Which is moved incrementally in one direction from a start position in consequence of actuation of each indexing element, and which can be returned to its start position by the latch operating member, in consequence of movement of the latter in a direction counter to door releasing movement thereof, to cancel the combination;
  • a rotatable latch operating member which can be rotated in one direction from a first position to a door releasing position only after actuation of the indexing elements in said predetermined sequence, and which, when rotated in the opposite direction from said first position thereof, efiects return of the coding element to its start position;
  • (B) means interconnecting the latch operating member with the latch bolt whereby the latch bolt is retracted by the operating member when the latter is turned in said opposite direction, from its neutral position;
  • (B) means providing a motion transmitting connection between the latch operating member and the latch bolt by which the latter is retracted in consequence i of movement of the latch operating member in said opposite direction from its neutral position;
  • latch means biased to a projected door latching position
  • Door locking means comprising the combination of:
  • Door locking means comprising the combination of:
  • Door locking means comprising:
  • said electrical instrumentalities include a step relay having contractor means which is incrementally advanced toward a circuit closing position by the step relay each time said time delayed circuit is completed.
  • the combination of claim 14 further characterized by: a reset solenoid; and switch means controlling energization of said reset solenoid, said switch means being effective to energize the reset solenoid in consequence of opening of a door having the locking means thereon.
  • Door locking means comprising:
  • said electrical instrumentalities including time delay means for delaying energization of the motor until the expiration of a predetermined time interval longer than normally required for proper decoding of the mechanism.
  • said combination cancelling means comprises a rotatable shaft which is indexed in correspondence with actuation of the decoding means
  • the door locking means of claim 17, further characterized by the following:
  • said motor being a solenoid having an armature which moves in one direction in response to energization of the solenoid;
  • (B) electrical instrumentalities including time delay means activated in consequence of actuation of an indexing element for completing an energizing circuit for the motor upon expiration of a predetermined time interval greater than the period of time normally required for proper decoding of the combination;
  • said second and third switches being part of an electromagnetic switch having a solenoid which, when energized, effects closure of said second switch and opening of said third switch,
  • Door latch mechanism of the type having latch and controller bolts characterized by the following:
  • (D) means providing a unidirectional driving connection between said third arm of the lever and the operating shaft effective to rock the lever away from its defined position through said greater angle in consequence of rotary movement of the operating shaft in one direction;
  • (E) lug means having a unidirectional lost motion driving connection with the controller bolt and said third arm of the lever and effective upon projection of the controller bolt to rock the lever away from its defined position through said substantially small angle;
  • latch means biased to a projected door latching position

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Wing Frames And Configurations (AREA)
  • Lock And Its Accessories (AREA)
  • Burglar Alarm Systems (AREA)
US419477A 1964-12-18 1964-12-18 Door locking means Expired - Lifetime US3353383A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US419477A US3353383A (en) 1964-12-18 1964-12-18 Door locking means
FR39922A FR1454915A (fr) 1964-12-18 1965-11-26 Dispositifde verrouillage pour portes
DE19651728381 DE1728381A1 (de) 1964-12-18 1965-11-29 Kontroll- und Alarmvorrichtung fuer Tuerschloesser
DE19651553338 DE1553338A1 (de) 1964-12-18 1965-11-29 Tuerschloss
CH1660165A CH439000A (de) 1964-12-18 1965-12-01 Sicherheitstürverschluss
BE673186D BE673186A (fr) 1964-12-18 1965-12-02
GB19980/68A GB1128039A (en) 1964-12-18 1965-12-08 Door locking means
GB52050/65A GB1128038A (en) 1964-12-18 1965-12-08 Door locking means
NL6516144A NL6516144A (fr) 1964-12-18 1965-12-10
SE16202/65A SE309925B (fr) 1964-12-18 1965-12-14
NL7208973A NL7208973A (fr) 1964-12-18 1972-06-28
NL7208974A NL7208974A (fr) 1964-12-18 1972-06-28
NL7208972A NL7208972A (fr) 1964-12-18 1972-06-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US419477A US3353383A (en) 1964-12-18 1964-12-18 Door locking means

Publications (1)

Publication Number Publication Date
US3353383A true US3353383A (en) 1967-11-21

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ID=23662442

Family Applications (1)

Application Number Title Priority Date Filing Date
US419477A Expired - Lifetime US3353383A (en) 1964-12-18 1964-12-18 Door locking means

Country Status (8)

Country Link
US (1) US3353383A (fr)
BE (1) BE673186A (fr)
CH (1) CH439000A (fr)
DE (2) DE1553338A1 (fr)
FR (1) FR1454915A (fr)
GB (2) GB1128039A (fr)
NL (4) NL6516144A (fr)
SE (1) SE309925B (fr)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529454A (en) * 1968-01-31 1970-09-22 Unican Security Systems Combination lock controlled electrical instrumentality
US3704460A (en) * 1970-08-18 1972-11-28 Stanley William Frank Self-contained alarm lock with tamper-proof interlocked casing formed from extrusion
US3720937A (en) * 1971-07-29 1973-03-13 G Smith Self-contained unauthorized entry alarm
US3747377A (en) * 1972-02-07 1973-07-24 Unican Security Sys Ltd Door locking means
US3778770A (en) * 1970-11-07 1973-12-11 Philips Corp Switching system having coded push-buttons
US3796073A (en) * 1971-04-28 1974-03-12 Fichet Bauche Lock device
US3866164A (en) * 1973-05-22 1975-02-11 Hinge Manufacturing Company Security system and lock therefor
US3890608A (en) * 1972-10-11 1975-06-17 Hager & Sons Hinge Mfg Door monitoring and controlling device for a security system
US3939315A (en) * 1974-06-10 1976-02-17 Schlage Lock Company Electric switch contained within lock frame and actuated by movement of locking bar
US3968483A (en) * 1975-01-08 1976-07-06 Leonard Jolley Burglar and fire alarm system
US3979647A (en) * 1975-06-11 1976-09-07 The Eastern Company Inductively coupled lock
US4262504A (en) * 1976-12-03 1981-04-21 Alps Electric Co., Ltd. Locking device
US4593543A (en) * 1983-10-05 1986-06-10 Folger Adam Company Security lock
US4637237A (en) * 1985-09-27 1987-01-20 Simplex Security Systems, Inc. Door locking system
US4993757A (en) * 1989-10-13 1991-02-19 Corzine Robert D Electromechanical locking device
US5311168A (en) * 1992-09-10 1994-05-10 Pease Industries, Inc. Lock set with self-contained door alarm and annunciator system
US5684457A (en) * 1995-06-01 1997-11-04 C&M Technology, Inc. Tamper indication system for combination locks
US6708538B1 (en) 2000-10-23 2004-03-23 Curt A. Walby Doorknob lock apparatus operable by combination or key
US20050166649A1 (en) * 2004-02-03 2005-08-04 Master Lock Company Combination Deadbolt
WO2007073288A2 (fr) * 2005-12-21 2007-06-28 Fix Ab Serrure pour fenetres, portes et analogues
EP2031157A1 (fr) * 2007-08-29 2009-03-04 Enzo Anselmi Verrouillage de sécurité
CN104912397A (zh) * 2015-07-02 2015-09-16 成都与飞科技有限公司 一种开锁机械装置
CN109854092A (zh) * 2019-04-17 2019-06-07 深圳市嘉士盾智能科技有限公司 一种玻璃指纹锁
CN110735563A (zh) * 2019-11-05 2020-01-31 宁波生久柜锁有限公司 一种锁具
CN113107283A (zh) * 2021-04-21 2021-07-13 冀振萍 一种基于互联网开发的随机密码安全锁

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136868A (en) * 1982-11-02 1984-09-26 Henryk Wojtkiewicz Lock blocking device
EP0345372A1 (fr) * 1988-06-09 1989-12-13 Jui-Chang Lin Dispositif de commande pour serrure à clenche, en particulier pour serrures électroniques

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US1141590A (en) * 1914-12-26 1915-06-01 Leo Turk Door-lock mechanism.
US1262878A (en) * 1917-03-23 1918-04-16 Sargent & Co Lock.
US1492345A (en) * 1921-06-29 1924-04-29 Robert E Barton Burglar system
US1538479A (en) * 1923-03-05 1925-05-19 Fleury Thomas Joseph Combination lock
US2059919A (en) * 1936-01-24 1936-11-03 Hollar Company Electric combination lock
US2855588A (en) * 1954-09-15 1958-10-07 Harry W Allen Combination lock and burglar alarm
US2896439A (en) * 1957-04-01 1959-07-28 Eugene W Holmberg Combination lock
US2988911A (en) * 1957-08-02 1961-06-20 Helen M Carter Automatic door lock mechanism for safes, strongboxes and other receptacles
US3128414A (en) * 1960-02-26 1964-04-07 Burroughs Corp Permutation control device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US755907A (en) * 1903-12-04 1904-03-29 James B Miller Lock.
US1141590A (en) * 1914-12-26 1915-06-01 Leo Turk Door-lock mechanism.
US1262878A (en) * 1917-03-23 1918-04-16 Sargent & Co Lock.
US1492345A (en) * 1921-06-29 1924-04-29 Robert E Barton Burglar system
US1538479A (en) * 1923-03-05 1925-05-19 Fleury Thomas Joseph Combination lock
US2059919A (en) * 1936-01-24 1936-11-03 Hollar Company Electric combination lock
US2855588A (en) * 1954-09-15 1958-10-07 Harry W Allen Combination lock and burglar alarm
US2896439A (en) * 1957-04-01 1959-07-28 Eugene W Holmberg Combination lock
US2988911A (en) * 1957-08-02 1961-06-20 Helen M Carter Automatic door lock mechanism for safes, strongboxes and other receptacles
US3128414A (en) * 1960-02-26 1964-04-07 Burroughs Corp Permutation control device

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529454A (en) * 1968-01-31 1970-09-22 Unican Security Systems Combination lock controlled electrical instrumentality
US3704460A (en) * 1970-08-18 1972-11-28 Stanley William Frank Self-contained alarm lock with tamper-proof interlocked casing formed from extrusion
US3778770A (en) * 1970-11-07 1973-12-11 Philips Corp Switching system having coded push-buttons
US3796073A (en) * 1971-04-28 1974-03-12 Fichet Bauche Lock device
US3720937A (en) * 1971-07-29 1973-03-13 G Smith Self-contained unauthorized entry alarm
US3747377A (en) * 1972-02-07 1973-07-24 Unican Security Sys Ltd Door locking means
US3890608A (en) * 1972-10-11 1975-06-17 Hager & Sons Hinge Mfg Door monitoring and controlling device for a security system
US3866164A (en) * 1973-05-22 1975-02-11 Hinge Manufacturing Company Security system and lock therefor
US3939315A (en) * 1974-06-10 1976-02-17 Schlage Lock Company Electric switch contained within lock frame and actuated by movement of locking bar
US3968483A (en) * 1975-01-08 1976-07-06 Leonard Jolley Burglar and fire alarm system
US3979647A (en) * 1975-06-11 1976-09-07 The Eastern Company Inductively coupled lock
US4262504A (en) * 1976-12-03 1981-04-21 Alps Electric Co., Ltd. Locking device
US4593543A (en) * 1983-10-05 1986-06-10 Folger Adam Company Security lock
US4637237A (en) * 1985-09-27 1987-01-20 Simplex Security Systems, Inc. Door locking system
US4993757A (en) * 1989-10-13 1991-02-19 Corzine Robert D Electromechanical locking device
US5311168A (en) * 1992-09-10 1994-05-10 Pease Industries, Inc. Lock set with self-contained door alarm and annunciator system
US5684457A (en) * 1995-06-01 1997-11-04 C&M Technology, Inc. Tamper indication system for combination locks
US6708538B1 (en) 2000-10-23 2004-03-23 Curt A. Walby Doorknob lock apparatus operable by combination or key
US20050166649A1 (en) * 2004-02-03 2005-08-04 Master Lock Company Combination Deadbolt
WO2007073288A2 (fr) * 2005-12-21 2007-06-28 Fix Ab Serrure pour fenetres, portes et analogues
WO2007073288A3 (fr) * 2005-12-21 2007-08-23 Fix Ab Serrure pour fenetres, portes et analogues
EP2031157A1 (fr) * 2007-08-29 2009-03-04 Enzo Anselmi Verrouillage de sécurité
CN104912397A (zh) * 2015-07-02 2015-09-16 成都与飞科技有限公司 一种开锁机械装置
CN109854092A (zh) * 2019-04-17 2019-06-07 深圳市嘉士盾智能科技有限公司 一种玻璃指纹锁
CN110735563A (zh) * 2019-11-05 2020-01-31 宁波生久柜锁有限公司 一种锁具
CN113107283A (zh) * 2021-04-21 2021-07-13 冀振萍 一种基于互联网开发的随机密码安全锁

Also Published As

Publication number Publication date
NL6516144A (fr) 1966-06-20
FR1454915A (fr) 1966-10-07
GB1128039A (en) 1968-09-25
BE673186A (fr) 1966-04-01
GB1128038A (en) 1968-09-25
CH439000A (de) 1967-06-30
NL7208974A (fr) 1972-09-25
SE309925B (fr) 1969-04-08
NL7208973A (fr) 1972-09-25
DE1553338A1 (de) 1969-11-20
NL7208972A (fr) 1972-09-25
DE1728381A1 (de) 1972-02-24

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