USRE46878E1 - Profiled key for cylinder locks - Google Patents

Profiled key for cylinder locks Download PDF

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Publication number
USRE46878E1
USRE46878E1 US14/677,496 US201014677496A USRE46878E US RE46878 E1 USRE46878 E1 US RE46878E1 US 201014677496 A US201014677496 A US 201014677496A US RE46878 E USRE46878 E US RE46878E
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United States
Prior art keywords
wall surface
key
flat
profile groove
key blade
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English (en)
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Bo Widen
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Winloc AG
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Winloc AG
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0017—Key profiles
    • E05B19/0029—Key profiles characterized by varying cross-sections of different keys within a lock system
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0017—Key profiles
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/0017—Key profiles
    • E05B19/0041—Key profiles characterized by the cross-section of the key blade in a plane perpendicular to the longitudinal axis of the key
    • E05B19/007—Key profiles characterized by the cross-section of the key blade in a plane perpendicular to the longitudinal axis of the key with U- or V-shaped cross-section
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/04—Construction of the bow or head of the key; Attaching the bow to the shank
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E05B27/0042—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with additional key identifying function, e.g. with use of additional key operated rotor-blocking elements, not of split pin tumbler type
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E05B27/0078—Asymmetrical tumbler pins, e.g. with a key operating on a radial protrusion of a tumbler pin
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
    • E05B27/0082—Side bar locking
    • 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
    • Y10T70/7441—Key
    • Y10T70/7486—Single key
    • Y10T70/7508—Tumbler type
    • Y10T70/7559—Cylinder type
    • Y10T70/7588—Rotary plug
    • 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
    • Y10T70/7441—Key
    • Y10T70/7486—Single key
    • Y10T70/7508—Tumbler type
    • Y10T70/7559—Cylinder type
    • Y10T70/7588—Rotary plug
    • Y10T70/7593—Sliding tumblers
    • Y10T70/7599—Transverse of plug
    • Y10T70/7605—Pin tumblers
    • 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
    • Y10T70/7441—Key
    • Y10T70/7486—Single key
    • Y10T70/7508—Tumbler type
    • Y10T70/7559—Cylinder type
    • Y10T70/7588—Rotary plug
    • Y10T70/7593—Sliding tumblers
    • Y10T70/7599—Transverse of plug
    • Y10T70/7616—Including sidebar
    • 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
    • Y10T70/7441—Key
    • Y10T70/7486—Single key
    • Y10T70/7508—Tumbler type
    • Y10T70/7559—Cylinder type
    • Y10T70/7588—Rotary plug
    • Y10T70/7627—Rotary or swinging tumblers
    • 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
    • Y10T70/7441—Key
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7842—Single shank or stem
    • Y10T70/7859—Flat rigid
    • 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
    • Y10T70/7441—Key
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7842—Single shank or stem
    • Y10T70/7859—Flat rigid
    • Y10T70/7864—Cylinder lock type
    • 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
    • Y10T70/7441—Key
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7842—Single shank or stem
    • Y10T70/787—Irregular nonplanar or undulated
    • 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
    • Y10T70/7441—Key
    • Y10T70/778—Operating elements
    • Y10T70/7791—Keys
    • Y10T70/7881—Bitting

Definitions

  • the present invention relates to a key for use in a cylinder lock with a rotatable key plug having a profiled key hole or keyway, said key comprising:
  • Such a key with an undercut groove is previously known, e.g. from U.S. Pat. No. 5,715,717 (Wichtn) or U.S. Pat. No. 5,640,865 (Widén).
  • Such keys have proven to be very useful in that they provide an improved security.
  • the key profile is quite distinguished from conventional keys, and it is rather difficult to copy such keys. Moreover, they permit a great variation of the cross-sectional profile, which is a great advantage.
  • a further object of the invention is to make it even more difficult to copy such profiled keys with ordinary lock smith tools.
  • the undercut longitudinal profile groove at its innermost part inside said ridge portion, is expanded into a longitudinal pocket having opposite lateral walls and a lowermost transverse end wall, which is substantially flat or slightly curved, and one of said opposite lateral wall portions of said pocket forms an inside wall of said ridge portion, wherein the vertical dimension of said ridge portion, measured in a plane of said side surface of the key blade, is more than half of the smallest width of said undercut groove adjacent to said side surface, said smallest width being measured as a perpendicular projection onto said inner wall of said longitudinal groove.
  • the inside wall of the ridge portion may be substantially parallel to a side surface of the key blade, so that the ridge portion forms a massive and strong material portion extending in parallel to the side surface of the key blade.
  • the pocket inside the ridge portion may have a substantially rectangular cross-section, a substantially circular cross-section, with a relatively large curvature, or some other configuration.
  • the material of the key blade is used in an optimum way, and a new kind of profile is obtained, and it will be very difficult to copy such keys, especially if they are produced by stamping and milling.
  • a cutting disc is normally not enough. Rather, it will be necessary to use broaching tools and a well-controlled use of such tools in order to secure exact dimensions of the pocket-like extension of the groove. This is of great importance for key control and high security to the end user of the key.
  • FIG. 1 and FIG. 2 illustrates a prior art lock and key combination
  • FIG. 3 shows a side view of the key illustrated in FIG. 2 ;
  • FIG. 4 is a cross-section through the prior art lock with an inserted key
  • FIG. 5 is a cross-sectional view of the prior art key blade
  • FIG. 6 shows a side view of a profiled key according to the present invention for an embodiment with a wave-like code pattern
  • FIG. 7 is a cross-section through the key of FIG. 6 ;
  • FIG. 8 is a cross-section through an associated lock with a key plug and a side tumbler
  • FIG. 9 is a similar view of a lock and an inventive key inserted into the lock.
  • FIGS. 10-18 are cross-sectional views of some additional embodiments of the profiled key according to the invention.
  • FIGS. 19-28 are similar cross-sectional views of some further modified embodiments of the profiled key according to the invention.
  • FIGS. 1 through 5 show a prior art lock and key system with a key blade having an undercut profile groove in a side surface thereof, such as the system disclosed in U.S. Pat. No. 5,715,717 (Widén).
  • the lock 10 is of the kind having a housing 11 with locking pins 14 in an upper portion thereof and a rotatable key plug 12 accommodated in a cylindrical bore of the housing.
  • the key plug 12 there is a central longitudinal keyway or key hole 13 having a sectional profile corresponding to an associated key 20 provided with conventional recesses 21 at the upper edge thereof and a profile groove 22 at a side surface 23 of the key blade.
  • the key also has a grip portion 24 .
  • the operation of the lock is more readily understood from the cross-sectional view in FIG. 4 .
  • the key plug 12 is rotatable within the housing 11 and can be locked against rotation by means of a longitudinal row of upper and lower locking pins 14 a, 14 b.
  • Each pair of such locking pins can be positioned with their abutting end surfaces at the shear line between the key plug 12 and the housing 11 .
  • the key plug 12 is rotatable.
  • the locking pins are positioned so as to release the lock by means of a properly cut key 20 .
  • FIG. 5 The full profile of the key 20 (of prior art design) is illustrated in FIG. 5 , as disclosed e.g. in the above-mentioned U.S. Pat. No. 5,715,717 (Widén). Accordingly, this prior art key has a longitudinal profile groove 22 extending longitudinally along the key blade at a depth which is slightly greater than half the thickness of the key blade. In FIG. 5 , the central a plane of the key blade is denoted by the letter “A”.
  • the longitudinal groove 22 has an inner wall 24 surface 241 and opposite walls upper wall surface 25 and lower side wall surface 26 .
  • An inclined portion 25a extends upwardly from the upper wall surface 25.
  • the wall surfaces, in particular the lower side wall or surface 26 located closest to the base edge 27 of the key blade is undercut and extends in a plane being inclined so as to face inwardly towards the bottom inner wall or surface 24 241.
  • This lower side wall surface 26 of the undercut groove 22 forms an inside wall surface of a ridge portion 28 , the outside of which forms part of the above mentioned side surface 23 of the key blade.
  • the prior art key blade shown in FIGS. 2, 3, 4 and 5 also has two further longitudinal grooves 30 and 31 on the other side of the key (to the left in FIG. 5 ).
  • the undercut portion 29 of the longitudinal groove 22 has many advantages, as explained in the above-mentioned U.S. Pat. No. 5,715,717 (Widén), especially with regard to increasing the number of possible profile variations, improved resistance against picking the lock and high security against unauthorized key copying.
  • a further improvement resides in a modification of the undercut groove.
  • This modification comprises an expansion or extension of the innermost part of the undercut portion of the groove 122 ( FIG. 7 ) so as to form a longitudinal pocket-like configuration 135 .
  • all reference numerals relating to the key correspond to those shown in FIG. 5 , although they have been supplemented with the digit “1” before the number given in FIG. 5 .
  • the downwardly extended pocket-like configuration 135 of the modified undercut groove 122 is (in this particular embodiment) substantially rectangular in cross-section, with opposite lateral walls 132 and 133 being parallel to each other, and a lowermost transverse end wall 134 , being parallel to the lower edge surface 127 of the key blade and facing upwardly in the direction of the central plane A of the key blade.
  • the flat key blade 120 has an external side wall surface 123 at the lower part of the flat one piece key blade 120 lying substantially in the same plane as an upper side surface 1123′ of the flat one piece key blade 120 at an upper part thereof, above said longitudinal profile groove 122.
  • the innermost lateral wall 132 of the pocket-like extension 135 adjoins with the inner wall 124 of the undercut groove, but is slightly displaced inwardly (away from the groove opening) so as to form a step 136 , whereas the opposite lateral wall 133 forms the inside wall of the ridge portion 128 , in parallel to the external side surface 123 of the key blade.
  • the key blade 120 is a flat one piece key blade with an undercut portion 129 of the longitudinal profile groove 122 which, at an innermost part, is extended further substantially in the same direction as the vertical direction (VD) into a longitudinal, substantially uniformly wide pocket (135) having a uniform width with opposite inner and outer substantially parallel lateral wall surface portions (132, 133).
  • the undercut portion or longitudinal profile groove 122 is defined at an upper part thereof by a smallest opening width (w), as seen perpendicularly to the external side wall surface 123 of the lower portion of said flat one piece key blade 120 between an upper wall 160 and the ridge portion 128.
  • the vertical dimension (h) of the ridge portion 128 is equal to or greater than half of said smallest opening width (w).
  • the inner wall surface 124 of said longitudinal profile groove 122 is located at a distance from the external side wall surface 123 of the flat one piece key blade 120 which is greater than half the thickness of the flat one piece key blade 120.
  • the undercut portion 129 of the longitudinal profile groove extends downwardly substantially in a vertical direction (VD) in parallel to the upper side wall surface 1123′ and the external side wall surface 123 of the flat one piece key blade 120.
  • the undercut portion 129 of the longitudinal profile groove 122 is extended further, substantially in the same direction as the vertical direction (VD) into a longitudinal, substantially uniformly wide pocket 135 having a uniform width with opposite inner and outer substantially parallel lateral wall surface portions 132, 133 wherein the inner wall surface 124 of the longitudinal profile groove 122 adjoins the inner lateral wall surface portion 132 of the pocket 135 and the inner lateral wall surface 132 of the pocket 135 extends downwardly to a lowermost transverse end wall surface 134, which is substantially flat or slightly curved, and which is substantially parallel to a lowermost edge wall surface 127 of the key blade and which faces upwardly in a direction opposite to the vertical direction (VD) towards the upper wall surface of the longitudinal profile groove 122 with
  • the undercut portion 129 of the longitudinal profile groove extends downwardly substantially in a vertical direction (VD) in parallel to the upper side wall surface 1123′ and the external side wall surface 123 of the flat one piece key blade 120.
  • the undercut portion 129 of the longitudinal profile groove 122 at an innermost part, is extended further, substantially in the same direction as the vertical direction (VD) into a longitudinal, widened pocket 135 having a larger lateral width than the narrowest part of the undercut portion 129 of the longitudinal profile groove 122, said widened pocket 135 being formed by opposite inner and outer lateral wall surface portions 132, 133, and said inner wall surface 124 of said longitudinal profile groove 122 adjoins, by way of a continuously downwardly extending wall surface portion 136, said inner lateral wall surface portion 132 of the pocket 135 and the inner lateral wall surface portion 132 of the pocket 135 extends continuously further downwardly to a lowermost transverse end wall surface 134, wherein the highest point of said inner lateral wall
  • the undercut portion 129 of the longitudinal profile groove extends downwardly substantially in a vertical direction (VD) in parallel to the upper side wall surface 1123′ and the external side wall surface 123 of the flat one piece key blade 120.
  • the undercut portion 129 of the longitudinal profile groove 122 is extended further, substantially in the same direction as the vertical direction (VD) into a longitudinal pocket being interrupted by at least one longitudinal recess 132a formed in at least one of opposite inner and outer lateral wall surface portions 132, 133 wherein the inner wall surface 1243 of the longitudinal profile groove 122 adjoins the inner lateral wall surface portion 1324, located opposite to the ridge portion and the inner lateral wall surface portion 1324 extends downwardly to a lowermost transverse end wall surface 134, the lowermost transverse end wall surface 134 being substantially flat or slightly curved and being substantially parallel to a lowermost edge wall surface 127 of the key blade and which faces upwardly in a direction opposite to the vertical direction (VD) towards the upper
  • the ridge portion 128 is somewhat longer, measured in parallel to the central plane A of the key blade, than the prior art structure ( FIG. 5 ). More particularly, the ridge portion 128 has a vertical dimension h, which is more than half of the smallest opening width w of the undercut groove 122 , this smallest opening width w being measured as a perpendicular projection onto the bottom inner wall 124 of the longitudinal groove 122 . Also, preferably, the vertical dimension h of the ridge portion 128 is greater than the distance d between the lowermost transverse end wall 134 and the lower edge surface 127 of the key blade. In this embodiment, the vertical dimension h of the ridge portion 128 is equal to or greater than the smallest opening width w. This structure is advantageous for several reasons:
  • FIGS. 8 and 9 there is shown an embodiment with a side locking tumbler 105 , which is guided in a cylindrical cavity 106 in the rotatable key plug 112 .
  • the arrangement is similar to those disclosed in the U.S. Pat. Nos. 4,756,177 (Widén) and 5,715,717 (Widén).
  • FIG. 5 FIGS. 1-5) The parts that correspond to the previous, prior art embodiment ( FIG. 5 FIGS. 1-5) have been given the same reference numerals, with the digit “1” added before the numbers shown in FIG. 5 4.
  • the side tumbler 105 is rotatable around its cylindrical axis, so that a transversally projecting finger 105 a will pivot back and forth when the projecting finger 105 a follows a wave-like coded surface on the side of the key blade (see FIG. 6 ), in this case in the ridge portion 128 (see FIG. 7 ).
  • a recess 105 b in its cylindrical surface will register with corresponding projections 108 a on a side bar 108 ( FIG. 9 ). In this way, the side bar may move radially inwards so as to permit rotation of the key plug 112 .
  • the projecting finger 105 a on the side tumbler 105 will contact the wave-like code pattern on the side of the key blade 120 , as shown in FIG. 6 , while pivoting back and forth and also moving vertically up and down.
  • the various side tumbler projections 105 a will be located in the concavities 102 a, 102 b, 102 c, 102 d, 102 e and possibly also (or alternatively) onto an upper code surface portion 102 f at an uppermost extra code level.
  • Such an upper, extra code level is disclosed in the published international patent application WO2005/028789 (Winloc et al).
  • the new configuration of the undercut groove 122 , with the pocket-like extension 135 is useful even without having a side tumbler 105 .
  • the ridge portion is basically continuous and does not have any cuts or codes.
  • At least one side tumbler is used, it does not have to be rotatable, but can be guided for elevational movement only. Furthermore, the side tumbler does not have to operate as a locking means for locking the key plug against rotation. Alternatively, it may serve only as a blocking element, which prevents incorrectly cut keys from being fully inserted into the key way 13 of the lock 10 .
  • a blocking element is disclosed in a patent application being filed by the same applicant on the same day as the earliest priority date of this application.
  • FIG. 10 there is shown an embodiment where the inner wall 124 surface 124′ of the longitudinal profile groove 122 122′ of the key blade 120′ merges smoothly with the adjoining inner lateral wall 132 surface 132′ of the vertically oriented pocket-like configuration 135 135′ which is uniformly wide, without any lateral step ( 136 in FIG. 7 ).
  • the pocket-like configuration 135 135′′ is similar to the one in FIG. 7 , but the lowermost transverse end wall surface 134 ′ is rounded or curved.
  • FIG. 11 illustrates the undercut portion 129′.
  • FIG. 12 includes a lower side wall 126′ and is similar to the one embodiment in FIG. 11 , but the lowermost transverse end wall surface 134 ′′ is shorter (but still curved), and the inner wall 124 surface 124′′ of the groove merges smoothly with the adjoining inner lateral wall 132 surface 132′′ (as in FIG. 10 ).
  • the lowermost transverse end wall surfaces 134′, 134′′ of the pocket 135 are curved.
  • the pocket-like configuration 135 ′ 1353 is modified into a circular cross-section. Accordingly, in this embodiment, the lateral walls 132 , 133 wall surfaces 1323, 133′ and the lowermost end wall 134 surface 1343 are all formed as circular arcs merging with each other.
  • FIG. 14 is like the one shown in FIG. 10 , but the inner lateral wall 132 surface 1324 adjoining the inner wall 124 surface 1243 is provided with a longitudinal recess 132 a, which is rectangular in cross-section.
  • FIG. 15 is similar to the one of FIG. 14 , but there is also a longitudinal recess 133 a in the outer lateral wall 133 133′′ opposite to the longitudinal recess 132 a 132a′ in the lateral wall 1325.
  • FIG. 16 is similar to the one in FIG. 15 , but there is a longitudinal rib 133 b (instead of a recess 133 a) opposite to the longitudinal recess 132 a 132a′′.
  • the modified embodiment shown in FIG. 17 comprises relatively small longitudinal recesses 132 c, 133 c, 134 c with part cylindrical part-cylindrical cross-sections in the lateral walls 133 wall surfaces 1333 and 132 1326 and the lowermost end wall 134 surface 1344, respectively. Except for these part-circular recesses, this embodiment corresponds to the one shown in FIG. 7 .
  • FIGS. 14 through 17 are included to illustrate that the opposite lateral wall surface portions and the lowermost transverse end wall surface of the longitudinal pocket may be provided with irregular surface portions.
  • the key blade 120 ′′ shown in FIG. 18 is composed of a lower part 150 ′′, which is identical or similar to the lower parts of the key blades shown in FIGS. 10-17 , and an upper part 151 ′′, which is identical to the lower part 150 ′′, but turned upside down. In this way the key blade 150 ′′, 151 ′′ can be inserted either way into an associated key hole, either as shown in FIG. 18 or turned upside down (the profile is then exactly the same because of the symmetry of the lower and upper parts).
  • the key blade 120′′ includes a wall surface 140 and an upper and lower pocket-like extension 1354.
  • FIGS. 19 through 27 26 show modified embodiments similar to those shown in FIGS. 10 through 17 .
  • the keys 321 through 329 328 each have a cross-sectional profile corresponding to those shown in FIGS. 10 through 17 , respectively, except that the upper part of the ridge portion 228 is portions 228′, 228′′, 2283, 2284, 2285, 2286, 2287 and 2288 are uniformly thick, and the inside 226 226′, 226′′, 2263, 2264, 2265, 2266, 2267 and 2268 thereof is are parallel to the central plane of the key blade.
  • FIG. 27 includes a key 330 and corresponds to FIG. 18
  • FIG. 28 includes a key 331 and corresponds to FIGS. 11 and 20 , except that the lowermost transverse end wall 234 surface 1234 is flat.
  • the ridge portion is identified by 2289 and the inside by 2269.
  • the ridge portion is identified by 1228 and the inside by 1226.
  • the inner wall 124 of the longitudinal undercut groove 122 , 122 ′, 122 ′′ is substantially parallel to the central plane A of the key blade and a side surface the external side wall surfaces 123 , 123 ′, 123 ′′ thereof.
  • the inner wall may be oriented at a small angle to said central plane A, this angle being normally no more than 15 15°, in some cases (such as a relatively thick key blade) somewhat larger.
  • the longitudinally extending pocket may be shorter than the length of key blade and extend along only a portion thereof.
  • the longitudinal profile rib at the key plug may be interrupted or formed as one or more separate elements mounted in the key plug.

Landscapes

  • Lock And Its Accessories (AREA)
  • Closures For Containers (AREA)
  • Braking Systems And Boosters (AREA)
  • Pallets (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Gates (AREA)
  • Tires In General (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Toys (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Bag Frames (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Milling Processes (AREA)
  • Display Devices Of Pinball Game Machines (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
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US12/866,204 US8210009B2 (en) 2009-02-18 2010-02-18 Profiled key for cylinder locks
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US13/080,339 Ceased US8205473B2 (en) 2009-02-18 2011-04-05 Profiled key for cylinder locks
US13/184,305 Active 2030-07-29 US8539803B2 (en) 2009-02-18 2011-07-15 Cylinder lock with profiled keyway
US14/677,452 Active USRE47555E1 (en) 2009-02-18 2015-04-02 Profiled key for cylinder locks
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US13/184,305 Active 2030-07-29 US8539803B2 (en) 2009-02-18 2011-07-15 Cylinder lock with profiled keyway
US14/677,452 Active USRE47555E1 (en) 2009-02-18 2015-04-02 Profiled key for cylinder locks
US16/364,887 Active USRE48585E1 (en) 2009-02-18 2019-03-26 Profiled key for cylinder locks

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SE537788C2 (sv) 2012-07-18 2015-10-20 Winloc Ag Sätt och apparat för framställning av ett profilspår i ett nyckelämne
US8720241B1 (en) * 2013-05-22 2014-05-13 Winloc Ag Cylinder lock and key with side bar
US9506272B2 (en) * 2013-08-16 2016-11-29 The Hillman Group, Inc. Two-piece key assembly
US9587415B2 (en) * 2014-02-25 2017-03-07 Schlage Lock Company Llc Sidebit operated interchangeable core control lug
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Publication number Priority date Publication date Assignee Title
USRE47555E1 (en) * 2009-02-18 2019-08-06 Winloc Ag Profiled key for cylinder locks
USRE48585E1 (en) 2009-02-18 2021-06-08 Winloc Ag Profiled key for cylinder locks
US11280111B2 (en) 2019-10-03 2022-03-22 Assa Abloy High Security Group Inc. Operating a lock cylinder with multiple, supplemental locking elements
US11624206B2 (en) 2019-10-03 2023-04-11 Assa Abloy High Security Group Inc. Lock cylinder and key with multiple, supplemental locking elements

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