EP0513320A1 - Methode servant a reproduire une silhouette codee partielle - Google Patents

Methode servant a reproduire une silhouette codee partielle

Info

Publication number
EP0513320A1
EP0513320A1 EP92901388A EP92901388A EP0513320A1 EP 0513320 A1 EP0513320 A1 EP 0513320A1 EP 92901388 A EP92901388 A EP 92901388A EP 92901388 A EP92901388 A EP 92901388A EP 0513320 A1 EP0513320 A1 EP 0513320A1
Authority
EP
European Patent Office
Prior art keywords
key
reference key
coded
silhouettes
silhouette
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.)
Withdrawn
Application number
EP92901388A
Other languages
German (de)
English (en)
Other versions
EP0513320A4 (en
Inventor
Robert C. Bush
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.)
Individual
Original Assignee
Individual
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
Priority claimed from US07/602,154 external-priority patent/US5133127A/en
Application filed by Individual filed Critical Individual
Publication of EP0513320A1 publication Critical patent/EP0513320A1/fr
Publication of EP0513320A4 publication Critical patent/EP0513320A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/28—Grooving workpieces
    • B23C3/35—Milling grooves in keys

Definitions

  • This invention relates to the field of locksmithing and mor particularly to the area of master keys and coded reference ke silhouettes.
  • the invention described herein find its use i duplicating keys for a lock when the original key for the loc cannot be found.
  • Using the method and silhouettes which ar described subsequently in this application a competent locksmith ma quickly and easily create a key for a lock if the given codes fo the lock are known.
  • a reference key is a key that has coded cuts which would unlock a known lock and is used as a reference in making other keys on standard key-duplicating machines. If the original or a reference key is available, the locksmith can use the original or reference key to produce a duplicate key on a key cutting machine.
  • Such machines are common in the trade, and several have been patented, (e.g. Juskevic's key cutting machine, U.S. Patent No. 4,521,142 and Ferruzzi's Encipherment machine, U.S. Patent No. 4,545, 709) .
  • Juskevic to reproduce a new key if a reference key silhouette is available, one merely clamps the reference key in a standard key-cutting device. The cutting wheel is then driven across the key-blank to reproduce the reference key silhouette on the new key. See Juskevic, Column 3, 'lines 44-48 (guide means); column 4, lines 60-61 (key-blank); column 5, lines 1-17. These devices are in common usage throughout the United States.
  • a key-blank is an uncut key from which coded cuts are made to form a duplicate key.
  • An object of this invention is to provide a standard coded reference key silhouette in almost any instance when such reference key silhouette is needed to prepare a duplicate key for a lock.
  • Another object of this invention is to provide a coded reference key with very few partial reference key silhouettes needed to be kept on hand, thus reducing the storage space required to duplicate standard keys.
  • the novel method described herein comprises first making a numbe of standard partial reference key silhouettes which are the selectively combined and assembled so as to create the complet silhouette of the coded key. For example, since there are fiv positions on many key shanks and nine depths of cut per position this invention requires only forty-five (45) (9x5) pre-cut partia reference key silhouettes to cover such a key. Each partia reference key silhouette would have one (or more) depth of cuts i one (or more) positions. When a coded reference key is required all that is necessary is for the locksmith to assemble th appropriate pre-cut partial reference key silhouettes thu reproducing the required silhouette.
  • the appropriate pre-cut partial reference key silhouettes ar selected according to the position/depth of cut requirements of th key desired to be reproduced. These positions and depths of cut can be taken from the standard locksmithing manual which describe the depth of cut and position for a particular lock and key.
  • any known coded key having five shank positions and nine dept may be reproduced by selecting the five appropriate pre-cut parti silhouettes and establishing the appropriate complete silhouette joining the five partial silhouettes together. The key to duplicated may then be reproduced by standard methods. IV. BRIEF DESCRIPTION OF THE DRAWINGS
  • Figure 1 shows a complete reference key silhouette with the depth of cut being 3-9-9-6-6.
  • Figure 2 shows a partial reference key silhouette with a number 3 depth of cut in the number 1 space.
  • Figure 3 shows a partial reference key silhouette with number 9 depth of cut in the number 2 and 3 positions.
  • Figure 4 shows a partial reference key silhouette with a number 6 depth of cut located in the 4 and 5 positions.
  • Figure 5 is an end view showing how the various partial reference key silhouettes are secured by a clip.
  • Figure 6 shows how the completed silhouette may be secured by a nut and bolt.
  • Figure 7 is a standard reference key reproducing device.
  • Figure 8 shows a partial reference key silhouette with a number
  • Figure 9 is a partial reference key silhouette showing a number
  • Figures 10 through 18 show partial reference key silhouettes with cuts made in the two, three and four positions.
  • the depths of cuts illustrated in the two, three and four shank positions for each figure are as follows:
  • Figure 10 shows 7-7-4 depths of cut, respectively.
  • Figure 11 shows 1-6-6 depths of cut, respectively.
  • Figure 12 shows 1-1-7 depths of cut, respectively.
  • Figure 13 shows 1-4-7 depths of cut, respectively.
  • Figure 14 shows 7-1-4 depths of cut, respectively.
  • Figure 15 shows 7-4-7 depths of cut, respectively.
  • Figure 16 shows 1-7-7 depths of cut, respectively.
  • Figure 17 shows 7-7-1 depths of cut, respectively.
  • Figure 18 shows 4-4-1 depths of cut, respectively.
  • the method described herein is simple, yet unique and innovative. It involves preparation of partial reference key silhouettes and assembling and securing selected partial silhouettes together to create a completed reference key silhouette.
  • a key comprises a head 1 and a shank 2.
  • the partial reference key silhouettes also include a circular hole 3 in the head of each partial reference key silhouette. These holes are used to assemble and secure the various partial reference key silhouettes in place to create the complete reference key silhouette.
  • the standard key cutting device has a stylus 10 which traces a complete reference key silhouette 11. This complete reference key silhouette 11 is moved on a bar 13 which also moves the key blank 12. The key blank 12 is cut by the cutting wheel 14. The standard reference key silhouette 11 is thus reproduced on the key blank 12.
  • the first step in this method is to cut various depths into a number of partial reference keys at the various positions as required by manufacturers of locks.
  • each key shank has five horizontal positions, the position closest to the head of the key being number 1 and the position on the tip of the key farthest from the head being position number 5.
  • one partial reference key silhouette may contain common depth cuts at more than one common position, as shown on the partial reference key silhouettes in Figures 3, 4 and 10 through 18. These partial reference keys have more than one coded cut on each partial reference key. As few as fifteen pre-cut partial reference keys could be utilized to produce nearly eighty percent (80%) of all common coded reference keys required by manufacturer's specifications.
  • partial reference key may contain more than one depth cut at mor than one position, as shown on Figures 3, 4 and 10 through 18. Whe a locksmith needs to prepare a duplicate key he merely assembles th appropriate pre-cut partial reference keys, as shown, for exampl in Figures 2, 3 and 4, to create the complete appropriat silhouette.
  • Figures 8 through 18 it may be shown how a coded reference key silhouette may be reproduced by selecting the appropriate partial reference key silhouettes and clasping them together as shown in Figures 5 or 6.
  • Figures 8 and 9 show alternative base key silhouettes.
  • Figure 8 has a base key silhouette which has a number two depth of cut 18 at the number one shank position and a number four depth of cut 19 at the number five shank position.
  • Figures 10 through 18 show different depths of cut at the shank positions in the center of the key shank, being positions two, three and four.
  • Combining the partial reference key shown in Figure 8 with the partial reference key shown in Figure 10 produces a coded reference key with a silhouette as follows: 2-7-7-4-4.
  • Combining the silhouette in Figure 8 with the silhouette in Figure 11, produces a coded reference key at 2-1-6-6-4.
  • Combining the partial reference key in Figure 8 with the partial reference key of Figure 18 produces a coded key 2-4-4-1-4.
  • combining the base reference key shown in Figure 8 with each of the partial reference keys shown in Figures 10 through 18 produces nine separate coded reference key silhouettes. We have thus used ten partial reference key silhouettes to produce nine complete coded reference key silhouettes.
  • base reference key silhouette shown in Figure 9 would allow us to have a number three depth of cut at the number one shank position and a number three depth of cut at the number five shank position.
  • Combining the second base key silhouette shown in Figure 9 with the partial reference key silhouette shown in Figure 10 produces a key coded 3-7-7-4-3.
  • Combining the second base key reference silhouette in Figure 9 with the partial reference key silhouette shown in Figure 18 produces a complete coded reference key 3-4-4-1-3.
  • combining the second base reference key silhouette shown in Figure 9 individually with the partial reference key silhouettes shown in Figures 10 through 18 would produce anothe nine complete coded reference key silhouettes. We now have use eleven partial reference key silhouettes to produce eightee completed reference key silhouettes.
  • the various positions on the key shank are shown in Figure 1.
  • the number two shank position 5 and the number three shank position 6 and the number four shank position 7 are the central positions on the key shank. It is these central three positions that are used for the partial reference keys at various depths shown in Figures 10 through 18.
  • the number five shank position 8 located furthest from the head 1 of the key blank is also shown on Figure 1.
  • the bolt 4, shown in Figure 6, may be secured by means of a nut 9.
  • An alternative method of combining the two or more silhouettes, three partial reference keys are combined in Figure 5, is the use of a U-clamp as shown on Figure 5.
  • the best mode for carrying out this particular invention would utilize fifteen to twenty partial reference keys which could be combined to form most of the common coded key silhouettes.
  • this silhouette may be placed on the left side of the cutting machine shown in Figure 7.
  • the stylus 10 then traces over the coded key silhouette thus assembled while the cutting wheel 14 cuts the key blank 12 in the same fashion as described previously to reproduce the required new key for the lock.
  • This invention has applicability in all trades which utilize locks but is particularly useful in the locksmithing trade.
  • the invention is used to reproduce keys for locks when the coded reference depths of cut and key positions are known.
  • the invention would save a great deal of time and effort and eliminate tedious measuring when a locksmith is required to reproduce a key without having a duplicate key readily available.
  • the equipment used to practice this device would include a key-making machine such as described previously and depicted in Figure 7 as well as a small lightweight set of partial reference key silhouettes. Quick, economical and efficient reproduction of keys if the coded key depths and positions are known may be accomplished by the use of this invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)
  • Supports Or Holders For Household Use (AREA)

Abstract

Méthode servant à reproduire une clé de référence codée en assemblant un certain nombre de silhouettes de clé de référence partielle. On prépare les silhouettes de clé de référence partielle en coupant diverses profondeurs verticales d'entailles à diverses positions horizontales de la tige de la clé. Chaque silhouette de clé de référence partielle peut avoir une (ou plusieurs) profondeur verticale d'entailles à une (ou plusieurs) position horizontale de la tige de la clé. En assemblant un certain nombre de silhouettes de clé partielle, on peut produire une silhouette de clé de référence codée qui permet d'accroître considérablement l'efficacité de reproduction, avec une clé standard, d'une clé pour une serrure dont les profondeurs et les positions des entailles codées sur la tige sont connues. Les silhouettes de clé de référence comprennent une tête (1) et une tige de clé (2). Les positions horizontales sur la tige de la clé sont numérotées de un à cinq à partir de la tête jusqu'à l'extrémité de la tige. Les silhouettes de clé de référence partielle comprennent en outre diverses profondeurs d'entailles allant de l'entaille numéro neuf (l'entaille verticale la plus profonde) à une entaille numéro un (l'entaille verticale la moins profonde). Ces silhouettes de clé de référence partielle peuvent ensuite être assemblées et placées dans une machine à découper/reproduire des clés standard. La machine à découper des clés reproduit la silhouette de la clé de référence souhaitée sur une ébauche de clé, reproduisant ainsi la clé de référence requise pour être utilisée dans une serrure codée connue. Un serrurier peut reproduire des clés de référence codées facilement et à un coût intéressant en utilisant la méthode de la silhouette de clé de référence partielle.
EP19920901388 1990-10-25 1991-08-26 Code duplicator partial silhouette method Withdrawn EP0513320A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US602154 1984-04-19
US07/602,154 US5133127A (en) 1987-03-02 1990-10-25 Bush code duplicator partial silhouette method

Publications (2)

Publication Number Publication Date
EP0513320A1 true EP0513320A1 (fr) 1992-11-19
EP0513320A4 EP0513320A4 (en) 1993-06-30

Family

ID=24410194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920901388 Withdrawn EP0513320A4 (en) 1990-10-25 1991-08-26 Code duplicator partial silhouette method

Country Status (3)

Country Link
EP (1) EP0513320A4 (fr)
AU (1) AU9104091A (fr)
WO (1) WO1992007677A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810416A (en) * 1971-03-19 1974-05-14 D Nelms Key-mode apparatus and system
FR2548938A1 (fr) * 1983-07-13 1985-01-18 France H K Procede pour realiser une clef dont on connait le numero ou code et machine pour la mise en oeuvre de ce procede

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2098728A (en) * 1936-01-27 1937-11-09 Seth A Mcphee Key cutting machine
US3496636A (en) * 1968-05-15 1970-02-24 Curtis Noll Corp Key cutting machine with preselected depth gauging
FR2100538A1 (fr) * 1970-03-19 1972-03-24 Internazionale Comp Procede de reproduction de cles plates d'apres leur numero, code et outils utilises a ces fins
US4012991A (en) * 1975-06-02 1977-03-22 Klaus W. Gartner Key decoding and duplicating apparatus and method
US4188163A (en) * 1978-07-21 1980-02-12 John Juskevic Key duplicating machine
IT1201008B (it) * 1982-04-05 1989-01-27 Imp Ind Metalmecc Perugia Macchina per l'esecuzione della cifratura di chiavi,in particolare per la riproduzione della cifratura di una chiave campione su una chiave da lavorare

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810416A (en) * 1971-03-19 1974-05-14 D Nelms Key-mode apparatus and system
FR2548938A1 (fr) * 1983-07-13 1985-01-18 France H K Procede pour realiser une clef dont on connait le numero ou code et machine pour la mise en oeuvre de ce procede

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9207677A1 *

Also Published As

Publication number Publication date
WO1992007677A1 (fr) 1992-05-14
EP0513320A4 (en) 1993-06-30
AU9104091A (en) 1992-05-26

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