The present technology relates to lock devices and locking methods. In particular, the present invention relates to a rotary-style combination lock assembly and associated locking methods.
Locks are commonly used for securing a wide variety of objects. For instance, locks are frequently used to secure lockers, toolboxes, luggage, gates, containers, bicycles and the like. One main disadvantage of a key-based lock is that a physical key is required to open the lock. A key to a lock may often be misplaced, may be inconvenient to carry, and may be difficult to remember.
Combination locks overcome many of the disadvantages of key-based locks by providing a numeric combination instead of a physical key to open the lock. Conventional rotary-style combination locks have a rotating dial that displays a range of numbers. To enter a combination, a user can rotate the dial in opposing directions (e.g., right, left, right) and align each number of the combination with an indicator (e.g., an indent). Once the combination is entered, the lock moves to an unlocked configuration such that the lock's shackle can move between open and closed positions. Locking mechanisms (e.g., internal disc assemblies) of conventional rotary-style combination locks prevent lock combinations from including sequential numbers (e.g., 1, 2, 3) and require that combinations comprise either entirely even numbers or entirely odd numbers, thereby limiting the number of lock combinations. Due to the above mentioned disadvantages, it is desirable to provide a key-less rotary-style combination lock that can provide a greater range of combinations.
The present invention is directed to a rotary-style combination locks, lock systems and methods that overcome drawback experienced in the prior art and that provide other benefits. At least one embodiment provides a rotary-style combination lock unlockable upon inputting a multiple character preselected combination, wherein the combination is selected before assembling the combination lock. The lock comprises a housing, a locking member connected to the housing, and a dial rotatable relative to the housing. The dial has a plurality of alphabetical characters disposed thereon, and the preselected combination is made up of one or more of the alphabetical characters on the dial. The lock has a plurality of combination discs contained in the housing and coupled to the dial. Each combination disc has an unlocking feature. When the lock is manipulated to input the preselected combination, the combination discs are all in an unlocked arrangement with the unlocking features in alignment. Each combination disc has a combination feature positioned relative to the dial and the unlocking feature so each combination disc is associated with a respective one of the characters of the multi-character combination. The combination discs is selected to correspond to the characters of the preselected combination and the combination discs are arranged so that the characters associated with the combination discs are in a sequence that spells at least one of a word, abbreviation, and acronym corresponding to the combination.
In one embodiment the plurality of combination discs includes at least first and second combination discs. The first combination disc is associated with a first character on the dial, and the second combination disc is associated with a second character on the dial, wherein the second character is immediately adjacent to the first character on the dial.
In another embodiment the plurality of combination discs includes a first combination disc having a first combination feature selectively positioned relative to a first unlocking feature and relative to the dial so the first combination disc is associated with a first character on the dial that is a first character in the combination, and the plurality of combination discs includes a second combination disc having a second combination feature selectively positioned relative to a second unlocking feature and relative to the dial so the second combination disc is associated with a second character on the dial that is a second character in the combination, wherein the first and second characters on the dial are immediately adjacent to each other on the dial. In another embodiment, the first and second characters in the combination are the same character on the dial.
Another aspect of the invention provides a rotary-style combination lock unlockable upon inputting a multiple character preselected combination, wherein the combination is selected before assembling the combination lock. The lock has a housing, a locking member coupled to the housing, and a dial rotatably mounted relative to the housing. The dial has a plurality of characters disposed about a circumferential portion of the dial. The preselected combination is made up of one or more of the alphabetical characters that spell at least one of a word, an abbreviation, and an acronym. The lock has a stack of combination discs contained in the housing and coupled to the dial. Each combination disc has an unlocking feature. When the lock assembly is manipulated to input the multiple character combination, the unlocking features are in alignment in an unlocked position, and the unlocking features are in a locked position when the unlocking features are misaligned. Each combination disc has a combination feature positioned relative to the characters on the dial and relative to the unlocking feature so each combination disc is associated with a respective one of the characters of the preselected combination. The combination discs being selected and arranged so that the characters associated with the combination discs spell the at least one of a word, an abbreviation, and an acronym.
Another embodiment provides a rotary-style combination lock system for providing a combination lock unlockable upon inputting a multiple character preselected combination, wherein the combination is selected before assembling the combination lock. The lock system comprises a lock body and a rotatable dial having a plurality of alphabetical characters disposed thereon. The preselected combination is made up of one or more of the alphabetical characters. The lock system includes a plurality of combination discs sized to be rotatably disposed in the housing and coupled to the dial. Each combination disc has an unlocking feature and has a combination feature positioned on the disc relative to the unlocking feature so each combination disc is uniquely associated with a respective one of the characters on the dial. Each lock includes combination discs selected to correspond to the characters of the preselected combination. The combinations discs are rotatably arranged in the housing, connected to the dial, and arranged so that rotating the dial to input the characters corresponding to the preselected combination spells at least one of a word, abbreviation, and an acronym.
Another aspect of the invention provides a method of making a rotary-style combination lock assembly manipulatable to input a multiple character combination that allows the lock assembly to move from the locked position to the unlocked position. The lock assembly comprises a housing, a locking member, and a dial having a plurality of characters disposed about a circumferential portion of the dial, wherein selected characters can be combinable to form at least one of a word, an abbreviation, and an acronym. The lock assembly includes a first plurality of combination discs, and each disc is associated with a selected one of characters that define the multiple-character combination. The method comprises selecting the multiple character combination from a plurality of words, abbreviations or acronyms, and selecting the first plurality of combination discs from a second plurality of combination discs, wherein each of the combination discs of the second plurality of combinations are associate with selected ones of the characters on the dial. The first selected combination disc is constructed to correspond to a first character of the combination, the second selected combination disc is constructed to correspond to a second character of the combination, and the third selected combination disc is constructed to correspond to a third character of the combination. The method includes positioning the first, second and third selected combination discs in the housing and coupling the first, second and third selected combination discs to the dial in an arrangement in a arrangement whereby the associated the first, second and third characters of the combination are in a sequence that spells the selected word, abbreviation or acronym forming the combination. The method includes coupling the combination discs and the housing to the locking member.
The following describes embodiments of rotary-style combination locks and associated methods of manufacture and use in accordance with the present disclosure. In several embodiments of the present disclosure, a rotary-style combination lock can include a disc assembly having tabs spaced apart from one another such that a combination for the lock can include characters adjacent to one another on a dial (e.g., 1-2-3). A lock in accordance with the present disclosure can further include tabs arranged on a disc assembly corresponding to a predefined combination, thereby preventing locks from having nonsensical combinations with random characters (e.g., B-C-T). Embodiments of combination locks can include, but are not limited to padlocks, luggage locks, bike locks, and cable locks. Embodiments in accordance with the present disclosure are set forth hereinafter to provide a thorough understanding and enabling description of a number of particular embodiments. Numerous specific details of various embodiments are described below with reference to textual combination locks having alphabetical characters that comprise lock combinations, but embodiments can be used with other locks and with other indicia (e.g., symbols, etc.). In some instances, well-known structures or operations are not shown, or are not described in detail to avoid obscuring aspects of this invention. A person skilled in the art will understand, however, that the invention may have additional embodiments, or that the invention may be practiced without one or more of the specific details of the embodiments as shown and described.
Many of the details, dimensions, angles, and other features shown in the Figures are merely illustrative of particular embodiments of the disclosure. Accordingly, other embodiments can have other details, dimensions, angles, and features without departing from the spirit or scope of the present disclosure. In addition, those of ordinary skill in the art will appreciate that further embodiments of the disclosure can be practiced without several of the details described below.
The lock 100 can further include a plurality of characters 110 of which a specific set of characters 110 can define the lock's combination. The characters 110 can be positioned around the circumference of the dial 108 such that the user can rotate the dial 108 with respect to the housing 102, and align individual characters 110 with the indicator 106 (e.g., a notch, protrusion, arrowhead, line, etc.) to enter the lock's combination. For example, if the lock 100 has a three character combination, the user can rotate the dial 108 multiple times in a clockwise direction until a first character 110 of the combination aligns with the indicator 106, then rotate the dial 106 twice in a counterclockwise direction until a second character 110 of the combination aligns with the indicator 106, and in a clockwise direction until a third character 110 of the combination aligns with the indicator 106. Once the final character of the combination is entered, the lock 100 can move to the unlocked configuration, releasing the free end of the locking member 104. In further embodiments, the lock 100 can have a combination comprising more or less characters 110 and/or the lock 100 can include more or less characters 110 on the dial 108.
The characters 110 shown in
The lock 100 can have a predefined combination selected before the lock is assembled. In one embodiment, a list of desired 3-letter combinations that include words, abbreviations, and/or TLAs can be created or complied. The locks are then manufactured so that the combination for each lock is one of the predetermined 3-letter combinations. Accordingly, the combinations for the locks are all preselected before manufacturing, rather than randomly generated during the manufacturing process. For example, a manufacturer can select a desired combination for the lock 100, and can build a disc assembly (described in detail in
Predefining combinations also allows the combination of the lock 100 to include immediately adjacent characters 110. For example, locks manufactured in accordance with the present disclosure can have combinations such as B-A-N, C-A-B, D-O-N, etc. The lock 100 of at least one embodiment can be manufactured so that the same letter can be used more than once in a combination. For example, the lock 100 can be constructed by selecting discs so that the 3-letter combination uses same letter two or more times (e.g., B-R-B, or L-O-L), including the same letter immediately adjacent to each other in the combination (e.g., B-F-F, or A-A-A). Allowing locks to have combinations that include immediately adjacent characters 110 or even the same character used more than once increases the number of possible combinations, thereby making it more difficult for an unauthorized user to guess a combination. Additionally, allowing textual combination locks (e.g., the combination for the lock 100) to include adjacent letters expands the number of meaningful words, abbreviations, or TLAs that can be used as combinations. In further embodiments, the lock 100 does not have a predefined combination, but the subsequently determined combination can include adjacent characters 110.
Referring to
Each disc 214 includes a notch 216 and at least one tab 218 (e.g., a protrusion, nib, etc.). The tabs 218 are arranged tangentially on each disc 214 along a theoretical bolt circle 222, such that each tab 218 can contact a tab 218 on the adjacent disc 214. For example, as shown in
In operation, the user can enter the lock's combination with the dial 208 to move the lock 200 from the locked configuration to the unlocked configuration. In
In
In
Arranging tabs 518 incrementally along the bolt circle 522 at a tab angles increasing by 13.85° allows rotary-style combination locks, such as the locks 100 and 200 described in
From the foregoing, it will be appreciated that specific embodiments of the present disclosure have been described herein for purposes of illustration, but that various modifications may be made without deviating from the present disclosure. For example, the rotary-style combination locks described above have textual combinations that can include adjacent letters (e.g., B-A-T). However, other embodiments of the disclosure can have combinations including adjacent symbols and/or combinations including other suitable indicia. Certain aspects of the present disclosure described in the context of particular embodiments may be combined or eliminated in other embodiments. For example, although embodiments of rotary-style combination locks described above have predefined combinations, other embodiments in accordance with the disclosure can include combinations that are determined after the lock is assembled. Further, while advantages associated with certain embodiments of the new technology have been described in the context of those embodiments, other embodiments may also exhibit such advantages, and not all embodiments need necessarily exhibit such advantages to fall within the scope of the technology. Accordingly, the disclosure and associated technology can encompass other embodiments not expressly shown or described herein.
This application is related to and claims priority to U.S. Provisional Patent Application No. 61/377,071, titled Rotary-Style Combination Lock Assemblies And Associated Methods, filed Aug. 25, 2010, which is incorporated herein in its entirety by reference thereto.
Number | Date | Country | |
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61377071 | Aug 2010 | US |