Connect public, paid and private patent data with Google Patents Public Datasets

Construction key tumbler cylinder assembly

Download PDF

Info

Publication number
US3059462A
US3059462A US2073360A US3059462A US 3059462 A US3059462 A US 3059462A US 2073360 A US2073360 A US 2073360A US 3059462 A US3059462 A US 3059462A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
key
tumbler
plug
cylinder
position
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
Inventor
Mathias M Check
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.)
Yale and Towne Manufacturing Co
Original Assignee
Yale and Towne Manufacturing Co
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
Grant date

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B27/00Cylinder locks and other locks with tumbler pins which are set by pushing the key in
    • E05B27/005Cylinder locks and other locks with tumbler pins which are set by pushing the key in with changeable combinations
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7441Key
    • Y10T70/7486Single key
    • Y10T70/7508Tumbler type
    • Y10T70/7559Cylinder type
    • Y10T70/7588Rotary plug
    • Y10T70/7593Sliding tumblers
    • Y10T70/7599Transverse of plug
    • Y10T70/7605Pin tumblers
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7441Key
    • Y10T70/7729Permutation
    • Y10T70/774Adjustable tumblers
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/70Operating mechanism
    • Y10T70/7441Key
    • Y10T70/778Operating elements
    • Y10T70/7785Tumblers
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00Locks
    • Y10T70/80Parts, attachments, accessories and adjuncts
    • Y10T70/8838Adjustment provisions

Description

Oct. 23, 1962 M. M. CHECK 3,059,462

CONSTRUCTION KEY TUMBLER CYLINDER ASSEMBLY Filed April 7, 1960 2 Sheets-Sheet 1 1N VEN TOR. /VArf//As /7 C//e'c/ United States Patent Ofi ce 3,959,462 Patented Oct. 23, 1962 3,059,462 CONSTRUCTIN KEY TUR/BIER CYLINDER ASSElvmLY Mathias M. Check, Stratford, Pa., assigner to The Yale & Towne Manufacturing Company, Stamford, Conn., a corporation of Connecticut Filed Apr. 7, 1960, Ser. No. 20,733 S Claims. (Cl. 70-384) This invention relates to a tumbler cylinder assembly for locks that will be used in equipping new buildings. More particularly, my invention relates to a novel tumbler cylinder assembly, that, during the construction of a building, can be operated lby a particular key, called a construction key, but that can be very easily and quickly converted so that thereafter it will be operated only by the new owners key.

It will be appreciated that a builder will install a lock during the construction of a building, and will have a key that he and his employees will -use to gain admittance. Generally, it has been the practice to use a key like the one that will be given to the new owner or occupant when he takes possession of the building. This practice is objectionableLbecause it may give an unauthorized person an opportunity to retain or to supply himself with a duplicate key, enabling him to enter the building at any time. Naturally, it is possible to change the tumbler combination of a conventional lock cylinder assembly, but that procedure is discouraged by the trouble and expense that are involved. The prior art has developed cylinders that are particularly designed to allow changing of the combination, but those cylinders are rather complicated and costly, or do not offer the security that is desired.

Through the novel concept of my invention, I contribute a relatively low cost lock cylinder assembly that will in effect allow the tumbler combination to be changed, that being done through a very simple operation. Thereby I make it entirely practical for a builder to equip a building with a lock that can be operated by a construction key, while the owners key is kept in careful custody. Then, when giving the owner his key, the builder will be able to assure him that there are no duplicate keys in the hands of persons who should not have them. Moreover, once my novel cylinder assembly is converted for the owners use, it positively cannot be operated through manipulation of the construction key and will offer the owner the full security of the lock.

In my novel tumbler cylinder assembly, I am able to utilize a key plug having a rather conventional series of pin tumblers that move relatively to a keyway in the key plug. Those tumblers are adapted to lock the key plug in the outer portion of the cylinder, but will allow rotation of the plug when each tumbler is in a release position. I particularly equip my assembly with means that hold one of the tumblers in release position. With one tumbler so held, it will be appreciated that the lock can be operated by a construction key that merely moves the remaining tumblers to release position. The means that hold the one tumbler are so formed and related to the tumbler that pressure applied against those means will free said tumbler for movement. The means cannot be moved again to a position holding the tumbler. To operate the lock thereafter, it will be necessary to move all of the tumblers to release position. That must be done by using the owners key, and the construction key no longer will be effective.

In the construction that I prefer, the tumbler holding means include a pin that has a press t in the opening in the front of the key plug. In assembling that construction, the pin is pressed inwardly in the opening and into contact with the first tumbler, that is, the tumbler nearest the front of the key plug, whereby to hold that tumbler in release position. The pin can be pressed further inwardly to a position in which it no longer will hold the iirst tumbler, and cannot then be returned to holding position. Thereafter the rst tumbler will operate in a conventional way, and all of the tumblers in the series must be moved by the owners key in order to allow rotation of the key plug.

I have thus outlined rather broadly the more important features of my invention in order that the detailed description thereof that follows may be better understood, and in order that my contribution to the art may be better appreciated. There are, of course, additional features of my invention that will Ibe described hereinafter and which will form the subject of the claims appended hereto. Those skilled in the art will appreciate that the conception on which my disclosure is based may readily be utilized as a 'basis for the designing of other structures for carrying out the several purposes of my invention. It is important, therefore, that the claims be regarded as including such equivalent constructions as do not depart from the spirit and scope of -my invention, in order to prevent the appropriation of my invention by those skilled in the art. g

Referring now to the drawings,

FIG. 1 shows a longitudinal section of my bler cylinder assembly;

FIG.V 2 shows an end view of the cylinder assembly shown in FIG. l1;

FIG. 3 shows a construction key that will be used to operate my cylinder assembly;

FIG. 4 shows the key that the owner will use to operate my cylinder assembly;

FIG. 5 is a longitudinal section showing a further form of my invention;

FIG. 6 shows an end view of another Aform of my novel cylinder assembly; v

FIG. 7 is a section on the line 7-7 in FIG. 6;

FIG. 8 is similar to FIG. 7, but shows the position ofv the holding member when moved from the first tumbler;

FIG. 9 is a cross section on the line 9-9 in FIG. 8.

Referring now more particularly to FIG. l of the draw-k ings, I indicate my novel cylinder assembly generally by the numeral 10, and I show a key plug 11 that is adapted to rotate in the outer body of the cylinder. Key plug 11 is equipped with a series of pin tumblers 12 that move in openings arranged longitudinally of a keyway 13 in the plug, and that actually are rather conventional. The body of cylinder 10 has a series of driver tumblers 14 that are pressed by springs 15', and that act in the locking position-of key plug 11 to press the tumblers 12 toward the keyway 13. 'Ihose persons skilled in the art will understand that the tumblers 12 may effect locking of the key plug '11, but -will allow rotation of the plug when moved to release positions by the insertion of a key in keyway 13.

In the particular form of my invention that I show in FIG. 1, I form an inclined opening 16 in the frontend of the key plug11. That opening 16 extends inwardly to the rst tumbler in the series 12, which I indicate by the numeral 17, and meets the opening in which tumbler 17 moves at a point just above keyway 13. I utilize a pin 18 that yhas a press lit in the opening 16. When assembling the key plug and tumblers, the pin 18 is pressed into a position extending below the tumbler 17, as shown in FIG. l, the arrangement being such that pin 18 will hold the tumbler 17 in a release position, or in other words with its upper end in aligned relation Vto the surface of key plug 11.

novel tum- It will now bey possible to operate the key plug 11 through the construction key A that I show in FIG. 3. Thus, the key A is formed with bittings 18 that are adapted to set in release positions all tumblers of the series 12, except the first tumbler 1'7. Key A has a bitting 19 adapted to set tumbler 17 in a locking position, but as shown in FIG. 1, pin 18 holds tumbler 17 so that it remains in release position, enabling construction key A to operate the key plug 11.

I now call attention to the fact that the opening 16 will enable the pin 18 to be pressed inwardly, as by tool T inserted in the opening 16. The pin 18 when pressed inwardly will move out of holding relation to the tumbler 17 and into the keyway 13, and can then be removed from the key plug. When the pin 18 no longer holds the tumbler 17, that tumbler naturally will move downwardly, thus acting in the usual way to effect locking of the key plug 11. To operate the key plug 11, it will now be necessary to use a key that will move all of the tumbler series 12, including tumbler 17, to release position.

That key will be the owners key, which I indicate by the letter B in FIG. 4. The key B is formed with bittings like the -bittings 18 on the 'key A, but has also a hitting 20 that will move the first tumbler 177 to release position. It will lbe understood that the key plug 11 no longer can be operated through manipulation of the construction key A, andthe cylinder assembly will have the full security that is offered by the series of tumblers 12.

The construction that I show in FIG. is quite like that which -I have described in connection with FIGS. 1 to 4, and utilizes a pin 25 which is assembled with a press tit in a bore 26 in the front end of key plug 11. In FIG. 5, however, the bore 26 does not extend toward keyway 13, but extends to a medial part of the first tumbler 117. I form the tumbler 117 withv a 'bore 27 that is adapted to `accept the pin 25. However, in its initial assembled position, the pin 25 will remain-partly in the opening 26, as shown in- FIG. S, so as to hold tumbler 117 in release position. By the insertion of tool T in the opening 26, the pin 25 can be pressed entirely into the bore 27 so that it no longer is in holding relation to tumbler 117. Thus, the' cylinder construction that I show in FIG. 5 canvery readily be converted forv the use of the owners key, in much the same mannerthat I have described in connection with FIG. 1.

In FIGS. 6 to 9, I form the front end of the key plug 11 with an opening 30 that extends in an odset position intersecting one side of the opening in which the Erst tumbler 217 moves. The first tumbler 217 has a peripheral groove 31, FIG. 9, that will be aligned with the opening 30 when tumbler 217 is in release position. Into the opening 30 I press a pin 32 having an end portion 33 that engages in the groove 31, as shown in FIG. 7, thereby holding tumbler 217 so that it will not eect locking of the key plug. The pin 32 has also a reduced portion 34 that will be aligned with tumbler 217 when pin 32 is pressed inwardly, as shown in FIG. 8, thereby allowing tumbler 217 to move. I show the pin 32 formed to project from the key plug 11 when the pin is in its initial position, as in FIG. 7, so that it can be driven inwardly by a tool that does not enter the opening 30. However, I may very well make the pin 32 shorter, since it may then be moved by a tool inserted in the opening 30 as in FIGS. 1 and 5; Actually, I may use for holding the tumbler 217 a steel ball that may be pressed into the opening 30 sol as to coact with the tumbler groove 31. It is merely necessary to know that the pin or other holding member 32 can be moved in only one direction, that is, into the position shown in FIG. 8, placing the iii-st tumbler 217 in normal operation. Once that is done, all of the tumblers will require key operation, and the owners key will be necessary in order to set the tumblers in release position. Y

It is conceivable, of course, that the novel concept of my invention may be practiced by using a' tumbler holding member that is mounted on the body of a lock cylinder. Thus, for example, the bore 27 in FIG. 5 may very well be formed in the first driver tumbler 14, the opening 26 then being formed in the cylinder body so that the pin 25 can engage in the bore 27. By holding the first driver 14, the pin 25 in eect will hold tumbler 117 in release position, and the cylinder assembly will operate in the same manner that I have already described in connection with FIG. 5. Therefore, I do not wish to be limited to a tumbler holding member that is particularly utilized on a key plug.

I believe that those persons skilled in the art will now understand that I have contributed a novel tumbler cylinder assembly having a very considerable value. Through my invention, it will be possible, at relatively low cost, to equip a building with a lock that can very readily be converted for the use of the owners key. The builder will have a construction key that will at -iirst operate the lock, but once the lock is converted it positively can not be manipulated in such a way that it will again allow the use of the construction key. Very little expense or trouble will be involved in equipping a building with my novel cylinder assembly, so that the builder will nd it practical to otter the owner better security. Therefore, I believe that the merits of my invention will be fully appreciated.

I now claim:

l. A lock tumbler cylinder assembly of the kind includ ing a cylinder, a key plug rotatable in the cylinder, and a series of movable tumblers in the cylinder and key plug for locking said key plug against rotation and adapted to be moved by a key inserted through the front of the key plug, said tumblers allowing rotation of the key plug when each tumbler is ina release posi-tion,

a member mounted inposition engaged between the key plug and one of said tumblers to hold that tumbler in release position,

said member by holding said one tumbler enabling the cylinder assembly to be operated by a first key that moves merely the remaining tumblers to release position,

a part on the key plug formed with an opening in which said member is adapted to move in a direction rearwandly of the key plug and out of engagement between the key plug and said one tumbler,

and a front portion of the key plug formed to expose a surface of the tumbler holding member so that the member can be pressed rearwardly in said opening whereby to free said one tumbler, so that thereafter a second key that moves all of the tumblers to release position will -be necessary in order to operate the cylinder assembly.

2. A lock tumbler cylinder assembly of the kind including a cylinder, a key plug rotatable in said cylinder, and a series of movable tumblers in the cylinder and key plug for locking the key plug against rotation and adapted to be moved by a key inserted through the front of the plug, said tumblers allowing rotation of the key plug when each tumbler is in a release position,

a part of said cylinder assembly formed with an opening extending from the front of the cylinder assembly inwardly to one of said tumblers,

a member assembled in said opening in contact with said one of the tumblers and having a portion in opposed relation to a surface on said tumbler to hold that tumbler in its release position, enabling the key plug to be operated through the use of a construction key that moves merely the remaining tumblers to their release position,

a surface of said member being exposed for an application of pressure in an inward direction to said member in said opening,

a part of the cylinder assembly formed rearwardly of the tumbler holding member with clearance that enables pressure applied to said sur-face of the member to move said member away from holding relation to said one tumbler, allowing said tumbler to move to a locking position,

and said last named part of the cylinder assembly covering further surfaces of said member to prevent an application of pressure in an `outward direction to said member, so that once the member is pressed out of tumbler holding position, there will be necessary to operate the key plug a second key that will set all of the tumblers in release position.

3. A lock tumbler cylinder assembly of the kind including a cylinder, a key plug rotatable in said cylinder, and a series of movable tumblers in said cylinder and key plug for locking said plug against rotation and adapted to be moved by a key inserted through the -front of the key plug, said tumblers allowing rotation of the key plug when each tumbler is in a release position,

an opening formed to extend in said key plug from the front of the plug inwardly to one of said tumblers,

a member having a press iit in said opening and pressed into position contacting said one of the tumblers,

said member having a portion in opposed relation to a surface on said one tumbler to hold that tumbler in its release position, enabling the key plug to be operated through the use of a construction key that moves merely the remaining tumblers -to their release position,

and a part on the key plug formed rearwardly of the tumbler holding member with clearance that enables said member to be pressed in an inward direction away from holding relation to said one tumbler, allowing said -tumbler to move to a locking position and making necessary to operate the key plug a second key that will set all of the tumblers in release position.

4. A lock tumbler cylinder assembly of the kind including a cylinder, a key plug rotatable in said cylinder, and a series of tumblers effective each for locking the key plug against rotation and movable to a release position to allow rotation of the plug, said tumblers being assembled in a series of bores that are arranged longitudinally on the key plug and cylinder and adapted to be moved in said bores by a key inserted through the front of the key plus,

an opening for-med in the front end of the key plug and extending to the bore which is nearest the front of the key plug and in which moves a rst tumbler,

a member inserted in said opening and into contact with said first tumbler,

said member having a portion in opposed relation to a surface on the first tumbler to hold that tumbler in release position, said key plug then being operable by a construction key that will move to release positions merely the tumblers rearwardly of said first tumbler,

and a part on said key plug formed rearwardly of the tumbler holding member with clearance enabling said member to be pressed in a rearward direction to a position in which it no longer holds said rst tumbler, allowing said first tumbler to move to a locking position and making necessary thereafter to operate the key plug a second key that will move all of the tum-blers to release positions.

5. A combination of the class described including a lock cylinder, a key plug rotatable in said cylinder, and a longitudinal series of spring pressed tumblers in said cylinder and key plug for locking the plug against rotation, sai-d tumblers adapted to move against their spring pressure and to be set when engaged by the bittings of a key inserted longitudinally through the front end of a keyway in the key plug,

a construction key bitted -for setting in a locking position the rst tumbler nearest the front of the key plug while setting the remaining tumblers in release position,

' a member assembled on the key plug and engaged between the plug and said rst tumbler to hold that tumbler away from the corresponding bitting of the construction key and in release position so that the key plug can be operated by the construction key,

and said key plug being formed with means enabling said member to be moved out of holding relation to said rst tumbler to allow that tumbler to move to a locking position, so that the construction key no longer can operate the key plug.

6. A lock tumbler cylinder assembly of the kind including a cylinder, a key plug rotatable in said cylinder, and a series of tumblers for locking the key plug against rotation and adapted to be moved in bores in the key plug and cylinder -by a -key inserted in a keyway in the plug, said tumblers allowing rotation of the key plug when each tumbler is in a release position,

said key plug having an opening extending from the front of the plug inwardly to the key plug bore in which one of said tumblers moves and being inclined toward said keyway,

a member assembled in said opening and extending under said one of the tumblers to hold that tumbler in its release position, enabling the key plug to be operated through the use of a construction key that moves merely the remaining tumblers to their release position,

'said tumbler holding member adapted to be pressed inwardly into said keyway whereby to move out of holding relation to said one tumbler, allowing said one tumbler to move to a locking position so that the construction key no longer will operate the key plus,

and said member being suiciently narrow to be moved freely through the keyway to a position in which it does not obstruct movement of a key in said keyway.

7. A lock tumbler cylinder assembly of the kind including a cylinder, a key plug rotatable in said cylinder, and a l'series of tumblers in the key plug and cylinder for locking the key plug against rotation and adapted to be moved by a key inserted through the fron-t of the plug, said tumblers allowing rotation of the key plug when each tumbler is in a release position,

said key plug having an opening extending from the -front of the plug inwardly to one of said tumblers,

a member assembled in said opening and engaged with said one of the tumblers to hold that tumbler in its release position, enabling the key plug to be operated through the use of a construction key that moves merely the remaining tumblers to their release positions,

and said one tumbler formed with a bore into which the tumbler holding member can be moved so that the member no longer is in said key plug opening, allowing said tumbler to move to a locking position and making necessary to operate the key plug a second key that will set all of the tumblers in release position.

8. A lock tumbler cylinder assembly of the kind including a cylinder, a key plug rotatable in said cylinder, and a series of tumblers in said cylinder and key plug -for locking the key plug against rotation and adapted to be moved by a key inserted through the front of the plug, said sumblers allowing rotation of the key plug when each tumbler is in a release position,

said key plug having an opening extending from the -front of the plug inwardly to one of said tumblers and beyond that tumbler,

a lgroove formed in the periphery of said one tumbler,

a member assembled in said opening and engaged in the groove of said tumbler to hold that tumbler in its release position, enabling the key plug to be operated through the use of a construction key that moves merely the remaining tumbler's to their release position,

and an inner portion of said inwardly extending opening enabling said ltumbler member to be moved in an inward direction away from engagement:y with said one tumbler, allowing said tumbler to move to a locking position so that the construction key no longer will operate the key plug.

UNITED STATESv PATENTS Woll Nov. 22, 1927 Hardy Mar. 10', 1931 Keil July 2, 1935 Maxwell et al. Oct. 27, 1936 Ziegliss Apr. 1 1952

US3059462A 1960-04-07 1960-04-07 Construction key tumbler cylinder assembly Expired - Lifetime US3059462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US3059462A US3059462A (en) 1960-04-07 1960-04-07 Construction key tumbler cylinder assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3059462A US3059462A (en) 1960-04-07 1960-04-07 Construction key tumbler cylinder assembly

Publications (1)

Publication Number Publication Date
US3059462A true US3059462A (en) 1962-10-23

Family

ID=21800243

Family Applications (1)

Application Number Title Priority Date Filing Date
US3059462A Expired - Lifetime US3059462A (en) 1960-04-07 1960-04-07 Construction key tumbler cylinder assembly

Country Status (1)

Country Link
US (1) US3059462A (en)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3099151A (en) * 1961-01-16 1963-07-30 Schlage Lock Co Pin tumbler cylinder key system
US3149486A (en) * 1963-04-22 1964-09-22 Russell Collapsing cylinder bottom pin
US3210973A (en) * 1963-09-04 1965-10-12 Independent Lock Co Lock construction
US3320781A (en) * 1964-08-28 1967-05-23 Lewis J Hill Key operated locks
US3431757A (en) * 1966-09-05 1969-03-11 Hideo Hori Multiple key lock having change key mechanism
FR2602815A1 (en) * 1986-07-29 1988-02-19 Laperche Sa Pump with axial pistons and rotor for a safety lock
US4747281A (en) * 1986-07-02 1988-05-31 Monahan Brian J Randomly and integrally re-keyable lock apparatus and method
US5168734A (en) * 1991-06-17 1992-12-08 Rad Lock, Inc. Re-combinate removable plug lock
US5682779A (en) * 1995-03-06 1997-11-04 Dolev; Moshe Mechanically changeable cylinder lock and key with rotating pins
US5718136A (en) * 1995-08-31 1998-02-17 Kaba High Security Locks Corporation Lost key lock-out cylinder
FR2761715A1 (en) * 1997-04-08 1998-10-09 Acces L Double key barrel for lock
US6047577A (en) * 1998-10-09 2000-04-11 Klimas; Frank Abnormal use indicator for door lock
WO2003023170A1 (en) * 2001-09-11 2003-03-20 Alvarez Gonzalez Manuel Joaqui Multi-key cylindrical lock
WO2004029390A1 (en) * 2002-09-25 2004-04-08 Malachi Christopher Mckenna Lock with different keys
GB2393479B (en) * 2002-09-25 2005-11-02 Malachi Christopher Mckenna Lock with different keys
US20060021406A1 (en) * 2004-07-30 2006-02-02 Herdman Rodrick A Programmable lock with a controlled programming position
US20060260371A1 (en) * 2004-04-01 2006-11-23 Williams Alston E Variable shear line lock cylinder
WO2007007313A1 (en) * 2005-07-07 2007-01-18 Mul-T-Lock Technologies Ltd. Keying system
US20080053174A1 (en) * 2006-09-03 2008-03-06 Haim Amir Electronic Cylinder Lock Apparatus And Methods
WO2008082797A1 (en) * 2007-01-04 2008-07-10 Schlage Lock Company Lock cylinder with offset pin
US20080271506A1 (en) * 2007-05-03 2008-11-06 Schlage Lock Company Lock cylinder
US20080282755A1 (en) * 2002-01-03 2008-11-20 Grimmer Larry R Lock apparatus and method
US20110011139A1 (en) * 2008-01-18 2011-01-20 Master Lock Company Llc Key cylinder lock arrangements
USRE45627E1 (en) 2004-04-01 2015-07-28 Kwikset Corporation Re-keyable lock cylinder

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1650564A (en) * 1927-06-10 1927-11-22 Penn Hardware Company Inc Pin-tumbler cylinder lock
US1796098A (en) * 1929-02-13 1931-03-10 Frederick S Hardy Lock
US2007143A (en) * 1934-06-13 1935-07-02 Keil Francis & Son Inc Lock construction
US2059129A (en) * 1933-04-22 1936-10-27 Yale & Towne Mfg Co Lock
US2591652A (en) * 1947-10-17 1952-04-01 Ziegliss Peter Two-piece key

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1650564A (en) * 1927-06-10 1927-11-22 Penn Hardware Company Inc Pin-tumbler cylinder lock
US1796098A (en) * 1929-02-13 1931-03-10 Frederick S Hardy Lock
US2059129A (en) * 1933-04-22 1936-10-27 Yale & Towne Mfg Co Lock
US2007143A (en) * 1934-06-13 1935-07-02 Keil Francis & Son Inc Lock construction
US2591652A (en) * 1947-10-17 1952-04-01 Ziegliss Peter Two-piece key

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3099151A (en) * 1961-01-16 1963-07-30 Schlage Lock Co Pin tumbler cylinder key system
US3149486A (en) * 1963-04-22 1964-09-22 Russell Collapsing cylinder bottom pin
US3210973A (en) * 1963-09-04 1965-10-12 Independent Lock Co Lock construction
US3320781A (en) * 1964-08-28 1967-05-23 Lewis J Hill Key operated locks
US3431757A (en) * 1966-09-05 1969-03-11 Hideo Hori Multiple key lock having change key mechanism
US4747281A (en) * 1986-07-02 1988-05-31 Monahan Brian J Randomly and integrally re-keyable lock apparatus and method
FR2602815A1 (en) * 1986-07-29 1988-02-19 Laperche Sa Pump with axial pistons and rotor for a safety lock
US5168734A (en) * 1991-06-17 1992-12-08 Rad Lock, Inc. Re-combinate removable plug lock
US5682779A (en) * 1995-03-06 1997-11-04 Dolev; Moshe Mechanically changeable cylinder lock and key with rotating pins
US5718136A (en) * 1995-08-31 1998-02-17 Kaba High Security Locks Corporation Lost key lock-out cylinder
FR2761715A1 (en) * 1997-04-08 1998-10-09 Acces L Double key barrel for lock
US6047577A (en) * 1998-10-09 2000-04-11 Klimas; Frank Abnormal use indicator for door lock
WO2003023170A1 (en) * 2001-09-11 2003-03-20 Alvarez Gonzalez Manuel Joaqui Multi-key cylindrical lock
ES2184637A1 (en) * 2001-09-11 2003-04-01 Gonzalez Manuel Joaqui Alvarez multi-key cylinder.
US20100050718A1 (en) * 2002-01-03 2010-03-04 Boesel Lucas J Lock apparatus and method
US9003845B2 (en) 2002-01-03 2015-04-14 Master Lock Company Llc Lock apparatus and method
US20080282755A1 (en) * 2002-01-03 2008-11-20 Grimmer Larry R Lock apparatus and method
US7634930B2 (en) 2002-01-03 2009-12-22 Strattec Security Corporation Lock apparatus and method
GB2393479B (en) * 2002-09-25 2005-11-02 Malachi Christopher Mckenna Lock with different keys
WO2004029390A1 (en) * 2002-09-25 2004-04-08 Malachi Christopher Mckenna Lock with different keys
US20060260371A1 (en) * 2004-04-01 2006-11-23 Williams Alston E Variable shear line lock cylinder
US8096155B2 (en) * 2004-04-01 2012-01-17 Newfrey Llc Variable shear line lock cylinder
USRE45627E1 (en) 2004-04-01 2015-07-28 Kwikset Corporation Re-keyable lock cylinder
US20060021406A1 (en) * 2004-07-30 2006-02-02 Herdman Rodrick A Programmable lock with a controlled programming position
US7290418B2 (en) * 2004-07-30 2007-11-06 Ez Change Lock Company, Llc Programmable lock with a controlled programming position
WO2007007313A1 (en) * 2005-07-07 2007-01-18 Mul-T-Lock Technologies Ltd. Keying system
US20080053174A1 (en) * 2006-09-03 2008-03-06 Haim Amir Electronic Cylinder Lock Apparatus And Methods
US8028554B2 (en) * 2006-09-03 2011-10-04 Essence Security International Ltd. Electronic cylinder lock apparatus and methods
WO2008082797A1 (en) * 2007-01-04 2008-07-10 Schlage Lock Company Lock cylinder with offset pin
US8826710B2 (en) * 2007-01-04 2014-09-09 Schlage Lock Company Lock cylinder with offset pin
US20080163657A1 (en) * 2007-01-04 2008-07-10 Schlage Lock Company Lock cylinder with offset pin
US8056379B2 (en) * 2007-01-04 2011-11-15 Schlage Lock Company Lock cylinder with offset pin
US20120055215A1 (en) * 2007-01-04 2012-03-08 Dickhans William J Lock cylinder with offset pin
US7775075B2 (en) 2007-05-03 2010-08-17 Schlage Lock Company Lock cylinder
US7574883B2 (en) 2007-05-03 2009-08-18 Schlage Lock Company Lock cylinder
US20090282881A1 (en) * 2007-05-03 2009-11-19 Schlage Lock Company Lock cylinder
US20080271506A1 (en) * 2007-05-03 2008-11-06 Schlage Lock Company Lock cylinder
US8424349B2 (en) 2008-01-18 2013-04-23 Master Lock Company Llc Key cylinder lock arrangements
US20110011139A1 (en) * 2008-01-18 2011-01-20 Master Lock Company Llc Key cylinder lock arrangements

Similar Documents

Publication Publication Date Title
US3418833A (en) Tamperproof cylinder lock
US3855824A (en) Key retaining lock
US4912953A (en) Re-keyable cylinder lock
US2049742A (en) Lock
US4732023A (en) Modifiable cylinder
US3525242A (en) Locks
US2460615A (en) Removable core lock
US3099150A (en) Combination push button lock
US3320781A (en) Key operated locks
US2370862A (en) Removable core cylinder
US2931204A (en) Combination padlock
US3722240A (en) Cylinder lock
US3672714A (en) Mortise lock with multiple functions
US2818723A (en) Cylinder lock
US2113007A (en) Cylinder lock
US1718723A (en) Padlock
US2596720A (en) Cylinder lock
US2049548A (en) Lock
US2003086A (en) Cylinder lock
US2656704A (en) Rotary and sliding bolt lock
US3234768A (en) Key actuated mechanism with temporary ball tumbler
US3324693A (en) Removable core cylinder for hotel lock
US4142389A (en) Cylinder lock
US3589153A (en) Key operated lock
US1527336A (en) Safety padlock