US20200156279A1 - Cutting tool latch assembly - Google Patents
Cutting tool latch assembly Download PDFInfo
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- US20200156279A1 US20200156279A1 US16/744,362 US202016744362A US2020156279A1 US 20200156279 A1 US20200156279 A1 US 20200156279A1 US 202016744362 A US202016744362 A US 202016744362A US 2020156279 A1 US2020156279 A1 US 2020156279A1
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- Prior art keywords
- latch
- tool
- dual
- spring
- joint
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/01—Means for holding or positioning work
- B26D7/02—Means for holding or positioning work with clamping means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/08—Means for actuating the cutting member to effect the cut
- B26D5/16—Cam means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
Definitions
- This invention relates to engagement/disengagement assemblies for use with tools involving cutting, chopping, or other machining applications.
- a known engagement/disengagement assembly utilizes interlocking gears between the latch and latch connectors that allow one latch to transmit movement into the opposite latch. Typically, this is done so that a user can keep one hand free while operating the particular tool.
- latches that utilize gear teeth are prone to mechanical wear and interference as well as misalignment and jamming during assembly and operation.
- a known engagement/disengagement assembly utilizes a plurality of linkages, springs, and revolute joints to allow pressing action at one point of the tool to cause a corresponding movement at another point on the tool.
- latch mechanisms usually contain numerous parts and very complex routes by which a motion of one latch is transmitted to another. Given the tight cost constraints for the manufacture of cutting tools and ease of repair and replacement of damaged parts, it is desirable to simplify the method by which latches or other structures transmit movement from one side of the cutting tool to the other to allow the user to use his or her hand for another application.
- a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein moving the first latch in a first direction causes the second latch to move in the first direction.
- a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein moving the first latch in a first direction causes the second latch to move in the first direction.
- the dual-latch mechanism further comprises a first spring interconnecting the first latch to the tool and a second spring interconnecting the second latch to the tool.
- a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein moving the first latch in a first direction causes the second latch to move in the first direction.
- the dual-latch mechanism further comprises a first spring interconnecting the first latch to the tool and a second spring interconnecting the second latch to the tool.
- the first latch and the second latch are also interconnected to the tool via at least one brace.
- a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein moving the first latch in a first direction causes the second latch to move in the first direction.
- the dual-latch mechanism further comprises a first spring interconnecting the first latch to the tool and a second spring interconnecting the second latch to the tool.
- the first latch and the second latch are also interconnected to the tool via at least one brace and the at least one brace extends about the joint.
- a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint is located between where the first latch is rotatably coupled to the tool and where the second latch is rotatably coupled to the tool, and wherein moving the first latch in a first direction causes the second latch to move in the first direction.
- a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint is located between where the first latch is rotatably coupled to the tool and where the second latch is rotatably coupled to the tool, and wherein moving the first latch in a first direction causes the second latch to move in the first direction.
- a first spring may interconnect the first latch to the tool and a second spring may interconnect the second latch to the tool.
- a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint is located between where the first latch is rotatably coupled to the tool and where the second latch is rotatably coupled to the tool, and wherein moving the first latch in a first direction causes the second latch to move in the first direction.
- a first spring may interconnect the first latch to the tool at a point between a free end of the first latch and the joint and a second spring may interconnect the second latch to the tool at a point between a free end of the second latch and the joint.
- a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint is located between where the first latch is rotatably coupled to the tool and where the second latch is rotatably coupled to the tool, and wherein moving the first latch in a first direction causes the second latch to move in the first direction.
- a first spring may interconnect the first latch to the tool at a point between the free end of the first latch and where the first latch is rotatably coupled to the tool and a second spring may interconnect the second latch to the tool at a point between the free end of the second latch and where the second latch is rotatably coupled to the tool
- a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint passes through a section of the first latch that overlaps a section of the second latch.
- a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint passes through a section of the first latch that overlaps a section of the second latch.
- a first spring interconnects the first latch to the tool via an undulating length in the first latch and a second spring interconnects the second latch to the tool via an undulating length of the second latch.
- a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint passes through a section of the first latch that overlaps a section of the second latch.
- a first spring interconnects interconnects the first latch to the tool at a point along an undulating length between a free end of the first latch and the joint and a second spring interconnects the second latch to the tool at a point along an undulating length between a free end of the second latch and the joint.
- the dual-latch mechanism may be included in a cutting tool that cuts via rotation of at least one cam, a cutting tool that cuts via a saw blade, that cuts via a drill, that cuts using plasma, or that cuts using instruments and equipment known to those skilled in the art.
- FIGS. 1A and 1B illustrate an exemplary embodiment of a cutting tool in which an exemplary dual-latch mechanism may be utilized.
- FIG. 2A illustrates an exemplary embodiment of a section of a cutting tool utilizing a first embodiment of an exemplary dual-latch mechanism in a depressed configuration.
- FIG. 2B illustrates an exemplary embodiment of a section of a cutting tool utilizing a first embodiment of an exemplary dual-latch mechanism in an engaged configuration.
- FIG. 2C illustrates an exemplary embodiment of a cross-section of a cutting tool utilizing a first embodiment of an exemplary dual-latch mechanism.
- FIG. 3A is an exemplary embodiment of a section of a cutting tool utilizing a second embodiment of an exemplary dual-latch mechanism in a depressed configuration.
- FIG. 3B is an exemplary embodiment of a section of a cutting tool utilizing a second embodiment of an exemplary dual-latch mechanism in an engaged configuration.
- FIG. 4A is an exemplary embodiment of a front view of a section of a cutting tool utilizing a third embodiment of an exemplary dual-latch mechanism in an engaged configuration.
- FIG. 4B is an exemplary embodiment of a top view of a section of a cutting tool utilizing a third embodiment of an exemplary dual-latch mechanism in an engaged configuration.
- FIG. 4C is an exemplary embodiment of a side view of a section of a cutting tool utilizing a third embodiment of an exemplary dual-latch mechanism in a first engaged configuration.
- FIG. 4D is an exemplary embodiment of a side view of a section of a cutting tool utilizing a third embodiment of an exemplary dual-latch mechanism in a second engaged configuration.
- FIG. 5A is an exemplary embodiment of a front view of a section of a cutting tool utilizing a fourth embodiment of an exemplary dual-latch mechanism in an engaged configuration.
- FIG. 5B is an exemplary embodiment of a top view of a section of a cutting tool utilizing a fourth embodiment of an exemplary dual-latch mechanism in an engaged configuration.
- FIG. 5C is an exemplary embodiment of a side view of a section of a cutting tool utilizing a fourth embodiment of an exemplary dual-latch mechanism in a first engaged configuration.
- FIG. 5D is an exemplary embodiment of a side view of a section of a cutting tool utilizing a fourth embodiment of an exemplary dual-latch mechanism in a disengaged configuration.
- FIG. 5E is an exemplary embodiment of a side view of a section of a cutting tool utilizing a fourth embodiment of an exemplary dual-latch mechanism in a second engaged configuration.
- FIGS. 1A and 1B may illustratively provide for a cutting tool 100 in which an exemplary dual-latch mechanism of the type illustrated and described herein may be used.
- the cutting tool 100 may be one for cutting flooring panels and tiles, however, the types of cutting tools 100 in which an exemplary dual-latch mechanism may be used may be any form of cutting tools known to those skilled in the art which utilize moving cutting parts or cutting utilities to break apart different materials.
- Exemplary cutting tools 100 may include table saws, table CNC plasma cutters, bench cutters (e.g., bolt cutters), milling machines, miter saws, table top jigsaws, universal cutter/grinders, paper cutters, waterjet cutting machine, laser cutters, and any other form of table or bench known to those skilled in the art in or on which material will be cut by an apparatus which utilizes either teeth or energy to break apart a material.
- table saws table CNC plasma cutters
- bench cutters e.g., bolt cutters
- milling machines e.g., miter saws, table top jigsaws, universal cutter/grinders
- paper cutters e.g., waterjet cutting machine, laser cutters, and any other form of table or bench known to those skilled in the art in or on which material will be cut by an apparatus which utilizes either teeth or energy to break apart a material.
- An exemplary cutting tool 100 may comprise a cutting section 1 and a material feeding section 2 on which material to be cut may be loaded.
- cutting section 1 may be considered the front of the cutting tool 100 while material feeding section 2 is the back.
- all numerals followed by an “A” may denote a component on the left side of the cutting tool 100 while all numerals followed by a “B” may denote a component on the right side of the cutting tool 100 .
- Exemplary cutting tool 100 may have a moveable cutting mechanism 5 comprising at least one handle 7 connected to a cutting utility 9 to enable a user to control the cutting utility 9 to cut material.
- Exemplary cutting tool 100 may also have a dual-latch mechanism (a portion of which may comprise the free ends of exposed latches 4 A and 4 B, whereby latch 4 A would be the left latch and 4 B the right latch) disposed within the underbody walls 20 of cutting tool 100 .
- the dual-latch mechanism located within walls 20 of cutting tool 100 may be operated such that one user's hand may operate only one latch 4 A/ 4 B of the dual latch mechanism while another hand may use handle 7 so that an exemplary cutting mechanism 5 may be unlatched on both sides of the cutting tool 100 , moved from a prior latched position to a second position, re-latching the cutting mechanism 5 at the second position, and all these steps via a rotation bracket 21 .
- handle 7 may translate a user's force through a shaft 8 to a pair of cams 11 a and 11 b to push down the cutting utility 9 into a cutting space 10 via translation of the cutting utility 9 between two rotational columns 6 A (left column) and 6 B (right column).
- a dual-latch mechanism may be utilized to control movement of the cutting utility 9 for cutting tool 100 .
- One such dual-latch mechanism may be illustratively embodied in FIG. 2A as dual-latch mechanism 200 .
- an exemplary dual-latch mechanism 200 may be situated between two walls 20 A (left wall) and 20 B (right wall) connected under material feeding section 2 .
- the free end of left latch 4 A may be located at depressed position P 1 and has a latch connection 4 C that may be configured to translate within a slot 19 A via a rotational connection at pin/bolt/screw/bearing 16 A through brace 15 A.
- brace 15 A may be affixed to another internal wall 20 C of cutting tool 100 by any known mechanical means, including being integral with internal wall 20 C.
- An additional pin or bolt 13 may be used along latch connection 4 C to hold one end of a spring 14 while another end of spring 14 is held by a mount 17 A.
- left latch 4 A may be rotated via a hinged joint at bolt 16 A within the range provided by slot 19 A in wall 20 A. Further accordingly, as illustratively provided for in FIG. 2A , left latch 4 A may return to another position from position P 1 via the elastic force in spring 14 .
- braces 15 A and 15 B may be separate parts, they may be formed as integrated structures for ease of manufacture and cost purposes.
- an exemplary dual-latch mechanism 200 may operate to translate the same motion from either of latch 4 A or latch 4 B via a central bolt 160 which rotationally couples latches 4 A and 4 B to one another.
- deflection of latch 4 A may cause latch connection 4 C to rotate about bolt 16 A at brace 15 A. Consequently, such rotation at bolt 16 A causes movement at the end of latch connection 4 C through which central bolt 160 goes.
- central bolt 160 may be moved as a result of deflection of latch 4 A, the rotational joint between central bolt 160 and right latch connection 4 C causes the same deflection to take place in right latch 4 B to position P 1 .
- an exemplary dual-latch mechanism 200 may be engaged so as to prevent movement of cutting mechanism 5 on cutting tool 100 .
- dual-latch mechanism 200 may have both latches 4 A and 4 B located at positions P 2 within their respective slots 19 A and 19 B in walls 20 A and 20 B, respectively.
- springs 14 may be found in a relaxed state so that there is substantially no elastic energy contained within its windings.
- bolts 16 A, 16 B, and 160 may be substantially aligned on the same axis.
- pins 13 on latch connections 4 C may be aligned on the same axis.
- latches 4 A and 4 B may be shown connected to one another via central bolt 160 .
- latch 4 A may have a thin feature 4 D configured to overlap with thin feature 4 E of latch B such that bolt 160 can pass there through.
- both thin feature 4 D and 4 E may have a slot through which bolt 160 may be connected to allow for certain play during movement of the latches 4 A/B of the dual-latch mechanism 200 in cutting tool 100 .
- thin feature 4 D and 4 E may have a single bore through their thickness for placement of bolt 160 .
- the geometries of thin features 4 D and 4 E may be such as to facilitate ease of movement while connected via bolt 160 .
- the outer edges of thin features 4 D and 4 E may be rounded to facilitate rotational movement while dual-latch mechanism 200 is operated in cutting tool 100 .
- thin features 4 D and 4 E may be coupled to one another via a rubber diaphragm or a steel washer to increase longevity of the dual-latch mechanism 200 , increase range of motion, or preclude debris from work material from cluttering the bolt 160 junction.
- bolt 160 may be covered or otherwise designed to cover the thin features 4 D and 4 E and thereby shield the joint formed thereby from falling debris during operation of tool 100 , for example, as a hex cap or an enlarged cap/cover that can fit on other bolt or screw heads.
- FIG. 3A illustratively provides for an exemplary embodiment of a dual-latch mechanism 300 in which much of the dual-latch structure described with respect to FIGS. 2A, 2B, and 2C may be shown, but with differences.
- an exemplary dual-latch mechanism may not require bolts 16 A, 16 B, or 160 for its operation, but may instead rely on a spring-pull system in which both latches 4 A and 4 B are connected to one another via an integral connection 4 C and lodged on braces 15 A/ 15 B having advance stops 15 C to prevent movement after a certain point.
- dual-latch mechanism 300 may permit a user to pull handle 18 away from the front of cutting tool 100 along channels 15 D so that arm 18 A, by which handle 18 may be connected to latches 4 A/ 4 B and connection 4 C, pulls the latches from a position P 1 to a position P 2 .
- springs 14 may be expanded so that spring energies therein may begin to form so as to pull the latches back to a prior position.
- arm 18 A may be coupled to the underside of material cutting section 2 via channels 15 D.
- Such channels 15 D may contain bearings, roller(s), or a combination of mechanical features known to those skilled in the art to facilitate fluid movement of the handle 18 and thereby connected latches 4 A and 4 B.
- FIG. 3B an example of a dual-latch mechanism 300 in a configuration prior to handle 18 being pulled may be illustratively provided.
- latches 4 A and 4 B connected by section 4 C may be found closer to wall 20 C and the front of slats 19 A and 19 B.
- springs 14 may be in a relaxed state so that no elastic energies are residing therein.
- dual-latch mechanism 300 may be in an engaged configuration to prevent movement of moveable cutting mechanism 5 .
- channels 15 D may contain friction surfaces to prevent accidental displacement of handle 18 , and thus latches 4 A and 4 B from an engaged position.
- stops 15 C may be located so as to maintain latches 4 A and 4 B in their engaged position, e.g., position P 1 , and only with sufficient force on handle 18 may they relent to the movement of latches 4 A and 4 B.
- stops 15 may be hinged to braces 15 A and 15 B or may be deflected downward as latch connector 4 C is brought into contact therewith.
- braces 15 A and 15 B are flexible and resilient extensions attached to wall 20 C and stops 15 C may have sloped surfaces on either side (a side facing section 1 of cutting tool 100 and a side facing section 2 of cutting tool 100 ).
- stops 15 C may have sloped surfaces on either side (a side facing section 1 of cutting tool 100 and a side facing section 2 of cutting tool 100 ).
- a dual-latch mechanism 400 in an engaged configuration may be illustratively provided.
- a cutting material surface 2 may be held by two walls 20 A and 20 B to which two rotation brackets 21 A and 21 B may be attached.
- Rotatable brackets 22 A and 22 B may be rotatably attached and mechanically engaged to rotation brackets 21 A and 21 B via a bolt 16 D and a latch 19 A and 19 B, respectively.
- bolt 16 D may be a preferred rotation mechanism
- any known rotating mechanisms may be utilized by persons of ordinary skill in the art, including shafts, gears or ratcheting mechanisms.
- latches 19 A and 19 B may be coupled to one another by a spring 14 A.
- press points 19 C and 19 D allow for movement of latches 19 A and 19 D in and out of rotatable brackets 22 A and 22 B, rotation brackets 21 A and 21 B, and throughbores 23 A and 23 B, respectively.
- FIG. 4B an exemplary top view of a dual-latch mechanism 400 may be shown in an engaged configuration.
- columns 6 A and 6 B may be tubular or any other structure which may be utilized to connect moveable cutting mechanism 5 to the rest of cutting tool 100 so that it may be pivoted and moved about the cutting tool 100 by a user.
- rotating bracket 22 A may contain a plurality of through holes 24 A for receiving a terminal end 19 A of latch 19 as it passes through rotation bracket 21 A via through bore 23 A.
- rotating bracket 22 A may be revolved about bolt 16 D so that terminal end 19 A may be compressed back inside throughbore 23 A (via the resiliency of spring 14 A).
- terminal end 19 A may be released to thereafter pass through a different through hole 24 A so that rotation bracket 22 A may be affixed in a different angular arrangement vis-à-vis rotating bracket 21 A.
- Any of the above-described operations of the left side of dual-latch mechanism 400 may be equally applicable to the right side.
- a view of a portion of cutting tool 100 may provide for material cutting section 2 held by walls 20 A and 20 B.
- rotation brackets 21 A and 21 B are coupled with rotating brackets 22 A and 22 B, respectively, via a bolt 16 D.
- columns 6 A and 6 B are coupled to rotating brackets 22 A and 22 B, respectively, to enable pivoting of rotating cutting mechanism 5 .
- latch 30 comprises two ratchet ends 30 A and 30 B, which are coupled to left and right ends of latch 30 via through bores 23 A and 23 B, respectively.
- latch 30 may be coupled to a surface 20 S on the inside of walls 20 A and 20 B via a resistance spring 31 A and 31 B, respectively.
- An above view of the arrangement illustratively provided for in FIG. 5A may be understood with reference to FIG. 5B .
- latch 30 may span the width of cutting tool 100 cutting material section 2 so that movement of ratchet 30 A will move ratchet 30 B.
- rotating bracket 22 A may contain a plurality of teeth 22 T for receiving ratchet 30 A of latch 30 as it passes through rotation bracket 21 A via through bore 23 A.
- an exemplary dual-latch mechanism 500 may be at rest in an engaged configuration between teeth 22 T of rotating bracket 22 A and ratchet 30 A.
- spring 31 may remain in an unloaded state while in contact with wall surface 20 S.
- an exemplary ratchet 30 A may be rotated away from the front of cutting tool 100 (e.g., toward cutting material section 2 ) so as to create deflection in spring 31 A against wall surface 20 S. Because latch 30 spans the cutting tool 100 so as to translate motion from ratchet 30 A to ratchet 30 B on the opposite side of the cutting tool 100 , the spring 31 B on the opposite side of cutting tool 100 will also deflect. Consequently, when rotating bracket 22 A is revolved about bolt 16 D to orient cutting mechanism 5 via connection/columns 6 A/ 6 B, ratchet 30 A may be released by the user and moved back into the space between teeth 22 T via spring force from spring 31 .
- ratchet 30 A is re-engaged with rotating bracket 22 A in spaces between teeth 22 T (and ratchet 30 B is in a similar engagement on the other side of cutting tool 100 with respect to rotating bracket 22 B and spaces 22 T), then the cutting tool 100 may have a modified position for the moveable cutting mechanism 5 vis-à-vis rotation bracket 21 A.
Abstract
Description
- This application claims priority to and the benefit of U.S. Provisional Patent Application Ser. No. 62/768,597, filed Nov. 16, 2018, which is incorporated herein in its entirety by reference.
- This invention relates to engagement/disengagement assemblies for use with tools involving cutting, chopping, or other machining applications.
- In certain cutting tools, such as in U.S. Pat. No. 10,086,524, a known engagement/disengagement assembly utilizes interlocking gears between the latch and latch connectors that allow one latch to transmit movement into the opposite latch. Typically, this is done so that a user can keep one hand free while operating the particular tool. However, latches that utilize gear teeth are prone to mechanical wear and interference as well as misalignment and jamming during assembly and operation.
- In certain other cutting tools, such as in U.S. Pat. No. 3,702,016, a known engagement/disengagement assembly utilizes a plurality of linkages, springs, and revolute joints to allow pressing action at one point of the tool to cause a corresponding movement at another point on the tool.
- Consequently, the foregoing latch mechanisms usually contain numerous parts and very complex routes by which a motion of one latch is transmitted to another. Given the tight cost constraints for the manufacture of cutting tools and ease of repair and replacement of damaged parts, it is desirable to simplify the method by which latches or other structures transmit movement from one side of the cutting tool to the other to allow the user to use his or her hand for another application.
- In an exemplary embodiment, a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein moving the first latch in a first direction causes the second latch to move in the first direction.
- In another exemplary embodiment, a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein moving the first latch in a first direction causes the second latch to move in the first direction. The dual-latch mechanism further comprises a first spring interconnecting the first latch to the tool and a second spring interconnecting the second latch to the tool.
- In another exemplary embodiment, a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein moving the first latch in a first direction causes the second latch to move in the first direction. The dual-latch mechanism further comprises a first spring interconnecting the first latch to the tool and a second spring interconnecting the second latch to the tool. According to this exemplary embodiment the first latch and the second latch are also interconnected to the tool via at least one brace.
- In another exemplary embodiment, a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein moving the first latch in a first direction causes the second latch to move in the first direction. The dual-latch mechanism further comprises a first spring interconnecting the first latch to the tool and a second spring interconnecting the second latch to the tool. According to this exemplary embodiment the first latch and the second latch are also interconnected to the tool via at least one brace and the at least one brace extends about the joint.
- In another exemplary embodiment, a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint is located between where the first latch is rotatably coupled to the tool and where the second latch is rotatably coupled to the tool, and wherein moving the first latch in a first direction causes the second latch to move in the first direction.
- In another exemplary embodiment, a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint is located between where the first latch is rotatably coupled to the tool and where the second latch is rotatably coupled to the tool, and wherein moving the first latch in a first direction causes the second latch to move in the first direction. Additionally, according to this exemplary embodiment a first spring may interconnect the first latch to the tool and a second spring may interconnect the second latch to the tool.
- In yet another exemplary embodiment, a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint is located between where the first latch is rotatably coupled to the tool and where the second latch is rotatably coupled to the tool, and wherein moving the first latch in a first direction causes the second latch to move in the first direction. A first spring may interconnect the first latch to the tool at a point between a free end of the first latch and the joint and a second spring may interconnect the second latch to the tool at a point between a free end of the second latch and the joint.
- In yet another exemplary embodiment, a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint is located between where the first latch is rotatably coupled to the tool and where the second latch is rotatably coupled to the tool, and wherein moving the first latch in a first direction causes the second latch to move in the first direction. A first spring may interconnect the first latch to the tool at a point between the free end of the first latch and where the first latch is rotatably coupled to the tool and a second spring may interconnect the second latch to the tool at a point between the free end of the second latch and where the second latch is rotatably coupled to the tool
- In a still further exemplary embodiment, a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint passes through a section of the first latch that overlaps a section of the second latch.
- In a still further exemplary embodiment, a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint passes through a section of the first latch that overlaps a section of the second latch. According to this exemplary embodiment, a first spring interconnects the first latch to the tool via an undulating length in the first latch and a second spring interconnects the second latch to the tool via an undulating length of the second latch.
- In a still further exemplary embodiment, a dual-latch mechanism for a tool includes a first latch rotatably coupled to the tool, a second latch rotatably coupled to the tool on a side opposite of the first latch, and a joint translationally moveable with respect to the tool and rotatably coupling the first latch to the second latch, wherein the joint passes through a section of the first latch that overlaps a section of the second latch. According to this exemplary embodiment, a first spring interconnects interconnects the first latch to the tool at a point along an undulating length between a free end of the first latch and the joint and a second spring interconnects the second latch to the tool at a point along an undulating length between a free end of the second latch and the joint.
- In each of the foregoing embodiments, the dual-latch mechanism may be included in a cutting tool that cuts via rotation of at least one cam, a cutting tool that cuts via a saw blade, that cuts via a drill, that cuts using plasma, or that cuts using instruments and equipment known to those skilled in the art.
-
FIGS. 1A and 1B illustrate an exemplary embodiment of a cutting tool in which an exemplary dual-latch mechanism may be utilized. -
FIG. 2A illustrates an exemplary embodiment of a section of a cutting tool utilizing a first embodiment of an exemplary dual-latch mechanism in a depressed configuration. -
FIG. 2B illustrates an exemplary embodiment of a section of a cutting tool utilizing a first embodiment of an exemplary dual-latch mechanism in an engaged configuration. -
FIG. 2C illustrates an exemplary embodiment of a cross-section of a cutting tool utilizing a first embodiment of an exemplary dual-latch mechanism. -
FIG. 3A is an exemplary embodiment of a section of a cutting tool utilizing a second embodiment of an exemplary dual-latch mechanism in a depressed configuration. -
FIG. 3B is an exemplary embodiment of a section of a cutting tool utilizing a second embodiment of an exemplary dual-latch mechanism in an engaged configuration. -
FIG. 4A is an exemplary embodiment of a front view of a section of a cutting tool utilizing a third embodiment of an exemplary dual-latch mechanism in an engaged configuration. -
FIG. 4B is an exemplary embodiment of a top view of a section of a cutting tool utilizing a third embodiment of an exemplary dual-latch mechanism in an engaged configuration. -
FIG. 4C is an exemplary embodiment of a side view of a section of a cutting tool utilizing a third embodiment of an exemplary dual-latch mechanism in a first engaged configuration. -
FIG. 4D is an exemplary embodiment of a side view of a section of a cutting tool utilizing a third embodiment of an exemplary dual-latch mechanism in a second engaged configuration. -
FIG. 5A is an exemplary embodiment of a front view of a section of a cutting tool utilizing a fourth embodiment of an exemplary dual-latch mechanism in an engaged configuration. -
FIG. 5B is an exemplary embodiment of a top view of a section of a cutting tool utilizing a fourth embodiment of an exemplary dual-latch mechanism in an engaged configuration. -
FIG. 5C is an exemplary embodiment of a side view of a section of a cutting tool utilizing a fourth embodiment of an exemplary dual-latch mechanism in a first engaged configuration. -
FIG. 5D is an exemplary embodiment of a side view of a section of a cutting tool utilizing a fourth embodiment of an exemplary dual-latch mechanism in a disengaged configuration. -
FIG. 5E is an exemplary embodiment of a side view of a section of a cutting tool utilizing a fourth embodiment of an exemplary dual-latch mechanism in a second engaged configuration. - In the drawings like characters of reference indicate corresponding parts in the different figures. The drawing figures, elements and other depictions should be understood as being interchangeable and may be combined, modified, and/or optimized in any like manner in accordance with the disclosures and objectives recited herein as would be understood to those skilled in the art.
-
FIGS. 1A and 1B may illustratively provide for acutting tool 100 in which an exemplary dual-latch mechanism of the type illustrated and described herein may be used. According to the illustrative embodiment ofFIGS. 1A and 1B , thecutting tool 100 may be one for cutting flooring panels and tiles, however, the types of cuttingtools 100 in which an exemplary dual-latch mechanism may be used may be any form of cutting tools known to those skilled in the art which utilize moving cutting parts or cutting utilities to break apart different materials.Exemplary cutting tools 100 that may take advantage of the features and benefits of en exemplary dual-latch mechanism of the type illustrated and described may include table saws, table CNC plasma cutters, bench cutters (e.g., bolt cutters), milling machines, miter saws, table top jigsaws, universal cutter/grinders, paper cutters, waterjet cutting machine, laser cutters, and any other form of table or bench known to those skilled in the art in or on which material will be cut by an apparatus which utilizes either teeth or energy to break apart a material. - An
exemplary cutting tool 100 may comprise acutting section 1 and amaterial feeding section 2 on which material to be cut may be loaded. For purposes of establishing an orientation convention, cuttingsection 1 may be considered the front of thecutting tool 100 whilematerial feeding section 2 is the back. For further purposes of orientation, and unless otherwise specified, all numerals followed by an “A” may denote a component on the left side of thecutting tool 100 while all numerals followed by a “B” may denote a component on the right side of thecutting tool 100.Exemplary cutting tool 100 may have amoveable cutting mechanism 5 comprising at least onehandle 7 connected to a cuttingutility 9 to enable a user to control the cuttingutility 9 to cut material.Exemplary cutting tool 100 may also have a dual-latch mechanism (a portion of which may comprise the free ends of exposedlatches latch 4A would be the left latch and 4B the right latch) disposed within theunderbody walls 20 of cuttingtool 100. In anexemplary cutting tool 100 the dual-latch mechanism located withinwalls 20 of cuttingtool 100 may be operated such that one user's hand may operate only onelatch 4A/4B of the dual latch mechanism while another hand may usehandle 7 so that anexemplary cutting mechanism 5 may be unlatched on both sides of thecutting tool 100, moved from a prior latched position to a second position, re-latching thecutting mechanism 5 at the second position, and all these steps via arotation bracket 21. Where anexemplary cutting tool 100 may be a tile cutter, handle 7 may translate a user's force through ashaft 8 to a pair ofcams utility 9 into a cuttingspace 10 via translation of the cuttingutility 9 between tworotational columns 6A (left column) and 6B (right column). - As previously described, a dual-latch mechanism may be utilized to control movement of the cutting
utility 9 for cuttingtool 100. One such dual-latch mechanism may be illustratively embodied inFIG. 2A as dual-latch mechanism 200. In an exemplary embodiment, an exemplary dual-latch mechanism 200 may be situated between twowalls 20A (left wall) and 20B (right wall) connected undermaterial feeding section 2. As illustratively provided, the free end ofleft latch 4A may be located at depressed position P1 and has alatch connection 4C that may be configured to translate within aslot 19A via a rotational connection at pin/bolt/screw/bearing 16A throughbrace 15A. In an exemplary embodiment, brace 15A may be affixed to anotherinternal wall 20C of cuttingtool 100 by any known mechanical means, including being integral withinternal wall 20C. An additional pin or bolt 13 may be used alonglatch connection 4C to hold one end of aspring 14 while another end ofspring 14 is held by amount 17A. Accordingly,left latch 4A may be rotated via a hinged joint atbolt 16A within the range provided byslot 19A inwall 20A. Further accordingly, as illustratively provided for inFIG. 2A ,left latch 4A may return to another position from position P1 via the elastic force inspring 14. The same characteristics, assembly, and operation applied to the foregoing components may be observed with respect toright latch 4B,latch connecter 4C,bolt 16B,brace 15B,pin 13,spring 14, and mount 17B. Whilebraces - With further reference to
FIG. 2A , an exemplary dual-latch mechanism 200 may operate to translate the same motion from either oflatch 4A or latch 4B via acentral bolt 160 which rotationally couples latches 4A and 4B to one another. Thus, deflection oflatch 4A may causelatch connection 4C to rotate aboutbolt 16A atbrace 15A. Consequently, such rotation atbolt 16A causes movement at the end oflatch connection 4C through whichcentral bolt 160 goes. Ascentral bolt 160 may be moved as a result of deflection oflatch 4A, the rotational joint betweencentral bolt 160 andright latch connection 4C causes the same deflection to take place inright latch 4B to position P1. Therefore, rotation of theconnections 4C belonging tolatches bolts bolt 160 in a direction opposite the direction oflatch 4A/4B deflection. According to this exemplary embodiment, such may be one exemplary operation of a dual-latch mechanism 200. - In accordance with an illustrative embodiment of
FIG. 2B , an exemplary dual-latch mechanism 200 may be engaged so as to prevent movement ofcutting mechanism 5 on cuttingtool 100. In an exemplary engaged configuration illustratively provided for inFIG. 2B , dual-latch mechanism 200 may have bothlatches respective slots walls FIG. 2B ,bolts FIG. 2B , pins 13 onlatch connections 4C may be aligned on the same axis. - With reference to the embodiment of dual-
latch mechanism 200 as illustratively provided for inFIG. 2C , latches 4A and 4B may be shown connected to one another viacentral bolt 160. As illustrated, latch 4A may have athin feature 4D configured to overlap withthin feature 4E of latch B such thatbolt 160 can pass there through. In one embodiment, boththin feature bolt 160 may be connected to allow for certain play during movement of thelatches 4A/B of the dual-latch mechanism 200 in cuttingtool 100. Alternatively,thin feature bolt 160. The geometries ofthin features bolt 160. In one embodiment, the outer edges ofthin features latch mechanism 200 is operated in cuttingtool 100. Alternatively,thin features latch mechanism 200, increase range of motion, or preclude debris from work material from cluttering thebolt 160 junction. In yet another alternative embodiment, bolt 160 may be covered or otherwise designed to cover thethin features tool 100, for example, as a hex cap or an enlarged cap/cover that can fit on other bolt or screw heads. -
FIG. 3A illustratively provides for an exemplary embodiment of a dual-latch mechanism 300 in which much of the dual-latch structure described with respect toFIGS. 2A, 2B, and 2C may be shown, but with differences. For example, an exemplary dual-latch mechanism may not requirebolts latches integral connection 4C and lodged onbraces 15A/15B having advance stops 15C to prevent movement after a certain point. In use, dual-latch mechanism 300 may permit a user to pullhandle 18 away from the front of cuttingtool 100 alongchannels 15D so thatarm 18A, by which handle 18 may be connected to latches 4A/4B andconnection 4C, pulls the latches from a position P1 to a position P2. As thelatches 4A/4B andconnection 4C are pulled away from the front of cuttingtool 100, springs 14 may be expanded so that spring energies therein may begin to form so as to pull the latches back to a prior position. In this exemplary embodiment,arm 18A may be coupled to the underside ofmaterial cutting section 2 viachannels 15D.Such channels 15D may contain bearings, roller(s), or a combination of mechanical features known to those skilled in the art to facilitate fluid movement of thehandle 18 and thereby connected latches 4A and 4B. - With reference to
FIG. 3B , an example of a dual-latch mechanism 300 in a configuration prior to handle 18 being pulled may be illustratively provided. As illustrated, latches 4A and 4B connected bysection 4C may be found closer to wall 20C and the front ofslats latch mechanism 300 may be in position P1 rather than position P2, springs 14 may be in a relaxed state so that no elastic energies are residing therein. In an exemplary configuration as illustrated inFIG. 3B , dual-latch mechanism 300 may be in an engaged configuration to prevent movement ofmoveable cutting mechanism 5. While not shown,channels 15D may contain friction surfaces to prevent accidental displacement ofhandle 18, and thus latches 4A and 4B from an engaged position. Alternatively, stops 15C may be located so as to maintainlatches handle 18 may they relent to the movement oflatches braces latch connector 4C is brought into contact therewith. One example of such a deflection alternative may be achieved is where braces 15A and 15B are flexible and resilient extensions attached to wall 20C and stops 15C may have sloped surfaces on either side (aside facing section 1 of cuttingtool 100 and aside facing section 2 of cutting tool 100). Thus, when a portion oflatch connector 4C is advanced toward the side ofstop 15 C facing section 1, it will cause stop 15C and itsrespective brace 15A/15B to deflect downwardly untilconnector 4C advances past each respective stop. Conversely, when the portion oflatch connector 4C is brought back toward the side ofstop 15 C facing section 2, it will cause stop 15C and itsrespective brace 15A/15B to once again deflect downwardly untilconnector 4C is brought to rest atopbraces - With reference to
FIG. 4A , an example of a dual-latch mechanism 400 in an engaged configuration may be illustratively provided. As previously described, a cuttingmaterial surface 2 may be held by twowalls rotation brackets Rotatable brackets rotation brackets bolt 16D and alatch bolt 16D may be a preferred rotation mechanism, any known rotating mechanisms may be utilized by persons of ordinary skill in the art, including shafts, gears or ratcheting mechanisms. As illustratively provided for inFIG. 4A , latches 19A and 19B may be coupled to one another by aspring 14A. As further illustrated, press points 19C and 19D allow for movement oflatches rotatable brackets rotation brackets throughbores FIG. 4B , an exemplary top view of a dual-latch mechanism 400 may be shown in an engaged configuration. As shown in bothFIGS. 4A and 4B ,columns moveable cutting mechanism 5 to the rest of cuttingtool 100 so that it may be pivoted and moved about thecutting tool 100 by a user. - With reference to a side view of a portion of a
cutting tool 100 employing the dual-latch mechanism 400 as illustratively provided for inFIGS. 4C and 4D , rotatingbracket 22A may contain a plurality of throughholes 24A for receiving aterminal end 19A of latch 19 as it passes throughrotation bracket 21A via throughbore 23A. As may be observed by comparingFIGS. 4C and 4D , rotatingbracket 22A may be revolved aboutbolt 16D so thatterminal end 19A may be compressed back insidethroughbore 23A (via the resiliency ofspring 14A). Oncerotation bracket 22A is oriented as desired,terminal end 19A may be released to thereafter pass through a different throughhole 24A so thatrotation bracket 22A may be affixed in a different angular arrangement vis-à-vis rotatingbracket 21A. Any of the above-described operations of the left side of dual-latch mechanism 400 may be equally applicable to the right side. - Referring to the illustrative embodiment of dual-
latch mechanism 500 as shown inFIG. 5A , a view of a portion of cuttingtool 100 may provide formaterial cutting section 2 held bywalls rotation brackets rotating brackets bolt 16D. As is also again shown,columns rotating brackets rotating cutting mechanism 5. In contrast to other embodiments, latch 30 comprises two ratchet ends 30A and 30B, which are coupled to left and right ends oflatch 30 via throughbores surface 20S on the inside ofwalls resistance spring FIG. 5A may be understood with reference toFIG. 5B . In both illustrative embodiments, latch 30 may span the width of cuttingtool 100cutting material section 2 so that movement ofratchet 30A will move ratchet 30B. - With reference to a side view of a portion of a
cutting tool 100 employing the dual-latch mechanism 500 as illustratively provided for inFIGS. 5C, 5D, and 5E , rotatingbracket 22A may contain a plurality ofteeth 22T for receivingratchet 30A oflatch 30 as it passes throughrotation bracket 21A via throughbore 23A. As illustrated inFIG. 5C , an exemplary dual-latch mechanism 500 may be at rest in an engaged configuration betweenteeth 22T of rotatingbracket 22A and ratchet 30A. Additionally, spring 31 may remain in an unloaded state while in contact withwall surface 20S. - As illustrated in
FIG. 5D , anexemplary ratchet 30A may be rotated away from the front of cutting tool 100 (e.g., toward cutting material section 2) so as to create deflection inspring 31A againstwall surface 20S. Becauselatch 30 spans thecutting tool 100 so as to translate motion from ratchet 30A to ratchet 30B on the opposite side of thecutting tool 100, thespring 31B on the opposite side of cuttingtool 100 will also deflect. Consequently, when rotatingbracket 22A is revolved aboutbolt 16D to orientcutting mechanism 5 via connection/columns 6A/6B, ratchet 30A may be released by the user and moved back into the space betweenteeth 22T via spring force from spring 31. Onceratchet 30A is re-engaged with rotatingbracket 22A in spaces betweenteeth 22T (and ratchet 30B is in a similar engagement on the other side of cuttingtool 100 with respect to rotatingbracket 22B andspaces 22T), then thecutting tool 100 may have a modified position for themoveable cutting mechanism 5 vis-à-visrotation bracket 21A. - This present invention disclosure and exemplary embodiments are meant for the purpose of illustration and description. The invention is not intended to be limited to the details shown. Rather, various modifications in the illustrative and descriptive details, and embodiments may be made by someone skilled in the art. These modifications may be made in the details within the scope and range of equivalents of the claims without departing from the scope and spirit of the several interrelated embodiments of the present invention.
Claims (20)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/744,362 US20200156279A1 (en) | 2018-11-16 | 2020-01-16 | Cutting tool latch assembly |
US17/987,920 US11890767B2 (en) | 2018-11-16 | 2022-11-16 | Tool with latch assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201862768597P | 2018-11-16 | 2018-11-16 | |
US16/744,362 US20200156279A1 (en) | 2018-11-16 | 2020-01-16 | Cutting tool latch assembly |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US17/987,920 Continuation US11890767B2 (en) | 2018-11-16 | 2022-11-16 | Tool with latch assembly |
Publications (1)
Publication Number | Publication Date |
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US20200156279A1 true US20200156279A1 (en) | 2020-05-21 |
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US16/744,362 Abandoned US20200156279A1 (en) | 2018-11-16 | 2020-01-16 | Cutting tool latch assembly |
US17/987,920 Active US11890767B2 (en) | 2018-11-16 | 2022-11-16 | Tool with latch assembly |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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US17/987,920 Active US11890767B2 (en) | 2018-11-16 | 2022-11-16 | Tool with latch assembly |
Country Status (1)
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US (2) | US20200156279A1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2633183A (en) * | 1950-05-19 | 1953-03-31 | Glenn H Norquist | Folding chair |
US5590928A (en) * | 1995-06-01 | 1997-01-07 | Winner International Royalty Corporation | Mechanical door stop |
US7922244B2 (en) * | 2008-02-19 | 2011-04-12 | Wonderland Nurserygoods Co., Ltd. | Tray latch mechanism for high chair |
-
2020
- 2020-01-16 US US16/744,362 patent/US20200156279A1/en not_active Abandoned
-
2022
- 2022-11-16 US US17/987,920 patent/US11890767B2/en active Active
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US11890767B2 (en) | 2024-02-06 |
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