US20190366447A1 - Tool holder with coiled springs - Google Patents
Tool holder with coiled springs Download PDFInfo
- Publication number
- US20190366447A1 US20190366447A1 US16/541,625 US201916541625A US2019366447A1 US 20190366447 A1 US20190366447 A1 US 20190366447A1 US 201916541625 A US201916541625 A US 201916541625A US 2019366447 A1 US2019366447 A1 US 2019366447A1
- Authority
- US
- United States
- Prior art keywords
- coil spring
- canted coil
- tool
- tool holder
- sleeve
- 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.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/107—Retention by laterally-acting detents, e.g. pins, screws, wedges; Retention by loose elements, e.g. balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/107—Retention by laterally-acting detents, e.g. pins, screws, wedges; Retention by loose elements, e.g. balls
- B23B31/1071—Retention by balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
- B25B23/0035—Connection means between socket or screwdriver bit and tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2231/00—Details of chucks, toolholder shanks or tool shanks
- B23B2231/04—Adapters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2231/00—Details of chucks, toolholder shanks or tool shanks
- B23B2231/34—Jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/136—Springs
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S279/00—Chucks or sockets
- Y10S279/904—Quick change socket
-
- 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
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17411—Spring biased jaws
- Y10T279/17487—Moving-cam actuator
- Y10T279/17521—Reciprocating cam sleeve
-
- 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
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17761—Side detent
-
- 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
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17761—Side detent
- Y10T279/17786—Spring
- Y10T279/17794—Sleeved
-
- 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
- Y10T279/00—Chucks or sockets
- Y10T279/34—Accessory or component
- Y10T279/3406—Adapter
- Y10T279/3412—Drive conversion
Abstract
Devices, systems and methods for holding devices, including tool holders and/or associated apparatus, that can be attached to various driving mechanisms. Various embodiments can include one or more canted, or slanted, coil springs that are capable of forming to various shapes by the application of a controlled force.
Description
- This application is a continuing application of U.S. Utility patent application Ser. No. 15/442,599 entitled “Tool Holder With Coiled Springs,” filed Feb. 24, 2017, which claims the benefit of U.S. Provisional Patent Application Ser. No. 62/299,923 entitled “Tool Holder With Coiled Springs,” filed Feb. 25, 2016, the disclosures of which are each incorporated by reference herein in their entireties
- Disclosed are devices, systems and associated methods for holding devices, including tool holders and/or associated apparatus, that can be attached to various driving mechanisms that could be driven by hand, electricity, hydraulic, pneumatic or other forms of driving force. Desirably, such tool holders can accept various types of driven bits such as, but not limited to, a screwdriver, drill, nut driver or chisel. Various embodiments can include one or more canted, or slanted, coil springs that are capable of forming to various shapes by the application of a controlled force.
- Tool holders used for inserting screws, drilling holes or revolving various devices or attachments have been used in the workforce for many years. A typical tool holder will desirably have a clearance between the tool and the tool holder (i.e. a shaft of a tool should be smaller than the hole in the tool holder it is being inserted into) so the tool can be easily inserted and removed from the tool holder. Because some attachments need to be precisely held in position without moving, or shaking around (especially when used with robotically controlled machines or precision placement of objects), there have been various products introduced, (i.e. Gao U.S. Pat. No. 7,740,249) that employ a variety of springs, sleeves and balls. In these devices, all of the components must typically be precisely machined so that the holder works as intended. Since many manufacturers produce such tools and/or tool holders, these manufacturers often use a wide variety of tolerancing for their devices, and thus there is often the chance that some of the tools and/or tool holders may not be held as precisely as intended or desired.
- The present invention includes a tool holder that employs one or more elastic and/or deformable peripheral member(s) in conjunction with other elements to engage tools, tool shafts, bits and/or driven members of varying shapes, sizes and/or configurations. In various embodiments, these elements, and the varying configurations and arrangements thereof, can replicate many features of prior art tool holding devices using fewer components, at lower cost and/or with less demanding machining and manufacturing requirements. In addition, various embodiments may allow a single tool holder design to accommodate multiple shapes of tool shafts and tools (i.e., both square drive and hex drive sockets using the same tool holder).
- The present invention will be more understood in the detailed description and the accompanying drawings.
-
FIG. 1 depicts a perspective view of one exemplary embodiment of atool holder 10 constructed in accordance with various teachings of the present invention, into which a squaredrive tool shaft 100 is being inserted; -
FIG. 2 depicts an exploded perspective view of thetool holder 10 ofFIG. 1 ; -
FIG. 3 depicts a left planar view of thetool 100 ofFIG. 1 ; -
FIG. 4 depicts a front planar view of thetool 100 ofFIG. 1 ; -
FIG. 5 depicts a right planar view of thetool 100 ofFIG. 1 ; -
FIG. 6 depicts a perspective view of acoil spring 120 for use with the embodiment ofFIG. 1 ; -
FIG. 7 depicts a front planar view of thecoil spring 120 ofFIG. 6 ; -
FIG. 8 depicts a side planar view of thecoil spring 120 ofFIG. 6 ; -
FIG. 9 is a front planar view of one embodiment of acollar 110, showing section lines 10-10 and 11-11; -
FIG. 10 is a sectional view of the area 10-10 shown inFIG. 9 ; -
FIG. 11 is an enlarged sectional view of the area 11-11 shown inFIG. 9 ; -
FIG. 12 depicts a perspective view of an embodiment of abody 150 fromFIG. 2 , showingdetail view 13; -
FIG. 13 is an enlarged partial view of thearea 13, shown inFIG. 12 ; -
FIG. 14 depicts a front planar view of the embodiment of thebody 150 fromFIG. 2 , showing section lines 15-15, 16-16, 17-17 and 18-18; -
FIG. 15 is an enlarged sectional view of the area 15-15 ofFIG. 14 ; -
FIG. 16 is an enlarged sectional view of the area 16-16 ofFIG. 14 ; -
FIG. 17 is an enlarged sectional view of the area 17-17 ofFIG. 14 ; -
FIG. 18 is an enlarged sectional view of the area 18-18 ofFIG. 14 ; -
FIG. 19 depicts a front planar view of the exemplary embodiment of atool holder 10 with asquare drive shaft 100; -
FIG. 20 depicts a front planar view of thetool holder 10 ofFIG. 19 with thesquare drive shaft 100 inserted into the tool holder, and thecollar 110 retracted, showing section lines 21-21 and 23-23; -
FIG. 21 is an enlarged sectional view of the area 21-21 shown inFIG. 20 , showingarea 22; -
FIG. 22 is an enlarged sectional view of thearea 22 shown inFIG. 21 ; -
FIG. 23 is an enlarged sectional view of the area 23-23 shown inFIG. 20 ; -
FIG. 24 depicts a left planar view of theinvention 10 with asquare drive shaft 100 in the locked position; -
FIG. 25 depicts a front planar view of thetool holder 10 ofFIG. 19 with thesquare drive shaft 100 in a “locked” position, showing section lines 28-28; -
FIG. 26 depicts a front planar view of thetool holder 10 and associatedsquare drive shaft 100 ofFIG. 25 , showing section lines 27-27; -
FIG. 27 is an enlarged sectional view of the area 27-27 shown inFIG. 26 ; -
FIG. 28 is an enlarged sectional view of the area 28-28 shown inFIG. 25 , showingarea 29; -
FIG. 29 is an enlarged partial view of thearea 29 ofFIG. 28 ; -
FIG. 30 depicts a lower perspective view of an alternative embodiment of atool holder 20, with a tool having adrive shaft 102 representing what is commonly known as an “AO” type tool shaft; -
FIG. 31 depicts a right planar view of thetool holder 20, with a AO-type shaft 102 in a “locked” position, showing section lines 32-32; -
FIG. 32 is an enlarged sectional view of the area 32-32, shown inFIG. 30 ; -
FIG. 33 depicts a left perspective view of abody section 152 of thetool holder 20; -
FIG. 34 depicts a perspective view of an alternative embodiment of atool holder 30, with atool drive shaft 103 representing what is commonly known as an “Trinkle” type tool shaft; -
FIG. 35 depicts a right planar view of thetool holder 30, with aTrinkle tool shaft 103 in a “locked” position, showing section lines 36-36; -
FIG. 36 is an enlarged sectional view of the area 36-36 shown inFIG. 35 ; -
FIG. 37 depicts a perspective view of another alternative embodiment of atool holder 40, with atool drive shaft 104 representing what is commonly known as an “Hudson” type tool shaft; -
FIG. 38 depicts a right planar view of thetool holder 40, with a Hudsondrive shaft 104 in a “locked” position, showing section lines 39-39; -
FIG. 39 is an enlarged sectional view of the area 39-39 shown inFIG. 38 ; -
FIG. 40 depicts a front planar view of acoil spring 145; -
FIG. 41 depicts a side planar view of thecoil spring 145 ofFIG. 40 ; -
FIG. 42 depicts a perspective view of an embodiment of a thetool holder 50 with asquare drive shaft 100, representing a tool; -
FIG. 43 depicts a front planar view of thetool holder 50, showing section lines 46-46; -
FIG. 44 depicts a right planar view of thetool holder 50, showing section lines 45-45; -
FIG. 45 is an enlarged sectional view of the area 45-45 ofFIG. 44 ; -
FIG. 46 is an enlarged sectional view of the area 46-46 ofFIG. 43 ; -
FIG. 47 depicts a partially-sectioned or “cut-away” perspective view of thetool holder 50; -
FIG. 48 depicts a perspective view of thebody 155; -
FIG. 49 depicts a rotated left planar view of abody section 155 of thetool holder 50, showing section lines 52-52; -
FIG. 50 depicts a front planar view of acollar section 170, showing section lines 53-53 and 54-54; -
FIG. 51 depicts a right planar view of thecollar section 170, showing section lines 55-55; -
FIG. 52 is a sectional view of the area 52-52 ofFIG. 49 ; -
FIG. 53 is a sectional view of the area 53-53 ofFIG. 50 ; -
FIG. 54 is a sectional view of the area 54-54 ofFIG. 50 ; and -
FIG. 55 is a sectional view of the area 55-55 ofFIG. 49 . - In the following detailed description, for purposes of explanation, numerous specific details are set forth to provide a thorough understanding of the various embodiments of the disclosure. Those of ordinary skill in the art will realize that these various embodiments are illustrative only and are not intended to be limiting in any way. In addition, for clarity purposes, not all of the routine features of the embodiments described herein may be shown or described for every alternative embodiment. One of ordinary skill in the art would readily appreciate that in the development of any such actual implementation, numerous implementation-specific decisions may be required or desirable to achieve specific design objectives. These design objectives may vary from one implementation to another and from one developer to another, and the variations thereof are contemplated and included in the present disclosure.
- Function
- The intended use of the various embodiments of the tool holder with coiled springs is for holding, driving, moving and/or rotating a variety of attachments in order to drill, thread, drive, rotate, impact and/or place various components or other devices. Such tool holders can be utilized in conjunction with a wide variety of tools, including rotary, reciprocating and/or oscillating-type tools and tool drivers, as well as tools and/or tool holders of various designs that might benefit from the tool holding features described herein.
- Components
- Those of ordinary skill in the art should realize that the various embodiments described herein are illustrative only, are not intended to be limiting in any way and can be combined and subtracted to fit the specific needs during surgery or other procedures.
- Desirably, the overall dimensions and/or thickness or width and/or diameters of the invention (as well as the various components of the invention) can be customized and/or particularized to an individual use.
- Specifications
-
FIG. 1 depicts a perspective view of one exemplary embodiment of atool holder 10, constructed in accordance with various teachings of the present invention, with what is commonly known as a squaredrive tool shaft 100 representing a “tool” to be connected to or otherwise held by the holder. As described earlier (in connection with the Gao patent—U.S. Pat. No. 7,740,249), various manufacturers and/or designers have previously attempted to improve various tool holder designs in a variety of ways, including by reducing the amount of play, shake and/or toggle between the connected tool and the tool holder by incorporating a variety of sliding components and/or balls. In order for such components to function as designed they often must rely highly on precision machining of both the tools (i.e., the tool shafts) and the tool holder components, which cost the manufacture, and eventually the end user, more money for all components of the system. Moreover, whether the tool adapter is used in a general shop setting or in a surgical suite, there are typically foreign bodies and/or other materials that can migrate into the adapter and cause the various components to fail (or even worse in a surgical setting—cause contamination which could lead to infections and/or other pyrogenic reactions). - The various embodiments disclosed herein can include a variety of components and component arrangements. With comparison to the holding devices disclosed in the Gao patent (U.S. Pat. No. 7,740,249), for example, at least one embodiment of a tool holder disclosed herein can include various components that replace three spherical balls, two sliding collars, and a compression spring of the Gao device to radially and axially stabilize the tool in the body, or tool holder. In various embodiments, a single component, such as a canted, or slanted, coil spring, can be used in place of such multiple component assemblies described in Gao, to stabilize a wider variety of tools and/or tool types than those allowed by the Gao devices.
- As depicted in
FIG. 2 , one component for accomplishing various objectives of the present invention can be the incorporation of one or more canted, or slanted, coil springs 120. Because the coils of the spring are angled (see angle C inFIG. 7 ), the form, or shape of the spring can easily be modified by deflection and/or manipulation of an adjacent feature in a variety of ways. - As depicted in
FIG. 2 atool holder 10 can comprise abody 150, one or more retainingballs 140, acompression spring 130, a cantedcoil spring 120 and acollar 110. The retainingballs 140 in this embodiment can be placed into their respective holes 1501 (seeFIGS. 12, 17 and 18 ). Those skilled in the art should understand that various embodiments of a tool holder need not necessarily incorporate two retainingballs 140 to function properly, but might also retain a desiredtool 100 with only oneretaining ball 140, or with more than two retaining balls or other components. After placement of the retainingballs 140, thecompression spring 130 and the cantedcoil spring 120 can placed in a desired position and/or orientation. Next, thecollar 110 can be placed over the prior-described components, with the machineddiameter 1110 of the collar 110 (seeFIG. 11 ) swaged or otherwise machined or formed into a conical surface 1113 (seeFIG. 23 ) that will desirably retain thecollar 110 on the sub-assembly. This retention of thecollar 110 is possible in this embodiment because the swaged conical surface 1113 is now a smaller diameter than the flange 1512 (seeFIG. 18 ) and contacts aradial fillet surface 1511 when thecompression spring 130 applies force uponfaces 1108 of thecollar body 150, such that thecollar 110 moves along the axis K of the invention when there is not atool 100 in place within the tool holder. - The
body 150 can includesurfaces surfaces collar 110. Thebody 150 may also includeelongated access holes 1502 that can allow a cantedcoil spring 120, or portions thereof, to pass into and/or through the holes. A chamferedsurface 1505 can be provided that helps to align and/or guide atool 100 into thebody 150. If desired, the body can include femalesquare driving surfaces 1503 that can mate with various surfaces on the tool, such as the male square drivingsurfaces 1003 depicted in thetool 100 ofFIG. 2 . In various alternative embodiments, the number offeatures body 150, and/or the correspondingfeatures drive 1103 of thetool 100, andcorresponding shape 1503 of thetool holder 50, could be a variety of shapes, including one flat, two flats, triangular and/or other polygon shapes (including circular shapes, if desired) without departing from the objectives of the present invention. Moreover, thetool holder 100 could optionally include asurface 1005 or other feature where the various driving ends could be, but not limited to, screwdriver points, drills or holders of different shapes (or such shapes could be added). - Also shown on the body 150 (see
FIG. 14 ) is adiameter stud 1508. Thisdiameter stud 1508 is shown as a generic attachment point between thetool holder 10 and a driving mechanism which can be, but is not limited to, a screwdriver handle, a drill and/or a machine. The driving force can be, but should not be limited to, forced induced by hand, as well as forces created by mechanical power, by electric power, by hydraulic power, by pneumatic power or by magnetic power. Though shown as a male shaft, it should be understood that this attachment point could also be, but not limited to, a female diameter, as well as a permanent connection point and/or removable threaded connection point, a tapered or press fit connection, a bonded connection and/or a welded attachment. If desired, such alternative connection methods could similarly be used between various components of the other embodiments of the invention describe herein. - Though the
body 150 andtool 100 show a cannulated, or through,diameter - As best seen in
FIGS. 6 through 8 , the cantedcoil spring 120 can have, in its static manufactured shape (i.e., unflexed condition), an outer diameter A which is the same or similar dimensions (or possibly slightly larger) as thegroove diameter 1509 of the body 150 (seeFIG. 16 ), and the inside diameter B of thespring 120 is desirably larger than anouter diameter 1001 of thetool 100, which desirably creates a gap G (seeFIG. 22 ) between theouter diameter 1001 of thetool 100 and the inner diameter A of the cantedcoil spring 120. The width D, shown inFIG. 8 , desirably fits between the walls of thegroove 1509 in thebody 150. - As best seen in
FIG. 23 , when thecollar 110 is axially moved along the axis K, and face 1112 of thecollar 110 contacts face 1513 of thebody 150, the diametric surfaces 1111 (see diameter E inFIG. 10 ) of the collar are moved away from thespring 120, such that they no longer contact the outer surface of the cantedcoil spring 120, which can allow thespring 120 to return to a static (i.e., unflexed and/or partially unflexed) shape, where the diameter A of thespring 120 is larger than thediameter 1101 of the tool. Simultaneously, an inner surface of thecollar 110 can be slid away from theretention balls 140, which allows theballs 140 to freely float in theholes 1501 between the diametricallysmaller holes 1514 and theinner diameter 1105 of thecollar 110. When this occurs, thetool 100 can desirably slide freely into and/or out of thetool holder 150. To lock thetool 100 in position (seeFIGS. 24 through 29 ), a user can release thecollar 110, which allows thecompression spring 130 to urge and/or move thecollar 110 along axis K in a desired direction, which causes theball 140 to come into contact with theconical surface 1106 of thecollar 110, and which in turn causes theretention balls 140 to move toward the axis K in theholes 1501 of thebody 110, until theballs 140 come into contact with the curveddiametric surface 1002 of thetool 100. Concurrently, the cantedcoil spring 110 will contact thefillets 1104 ofcollar 110, and thecollar 110 should continue to move along axis K until the fourdiametric surfaces 1111 of thecollar 110 compress and/or otherwise deform the areas of the cantedcoil spring 120 that are contacted. For example,FIG. 29 depicts a static shape of the cantedcoil spring 120, represented by diameters A and B, with changes in the spring shape in areas where thediametric surfaces 1111 contact thespring 120, which in the figure have reduced radial areas represented by RAD. F. In this condition, a gap G (seeFIG. 22 ) will desirably no longer exist between the cantedcoil spring 120 and the tool in the areas where thediametric surfaces 1111 contact the cantedcoil spring 120. The reduced radial area RAD. F desirably produces spring pressure onto the shaft and holds it into position. When thecollar 110 is pulled back, such as shown inFIG. 23 , the cantedcoil spring 120 will desirably return to the static position and thetool 100 can be easily removed and/or replaced. - Another embodiment of a
tool holder 20 constructed in accordance with various teaching of the present invention is depicted inFIGS. 30 through 33 , wherein thetool 102 includes a driving end (commonly known as an AO connection) where there is a single driving flat 1023 on thetool 102 and acorresponding engagement feature 1523 on thebody 152. In this embodiment, the various similarcanted coil spring 122 features, thebody 152 features 1521 and 1525, thecollar 112features 1126 and thetool 102features 1022 desirably work in the same or a similar manner as those described in connection with the embodiment of atool holder 10, as previously described. - Another alternative embodiment of a
tool holder 30 constructed in accordance with various teaching of the present invention is depicted inFIGS. 34 through 36 , where thetool 103 includes a driving end (commonly known as a Trinkle connection) where the driving feature is a set of protrusions orenlarged diameters 1033 on thetool 103, with corresponding engagement features 1533 on thebody 153. In this embodiment, the various similarcanted coil spring 123 features, thebody 153 features 1531 and 1535, and thecollar 113feature 1136 desirably work in the same or similar manners as those described in connection with the embodiment of atool holder 10, as previously described. In this embodiment, instead of a curveddiametric surface 1002 of thetool shaft 100, there can be provided a throughhole 1034 andconical surface 1031 that desirably retain thetool 103 in position when theballs 143 nest into theconical surfaces 1031, if desired. - Another alternative embodiment of a
tool holder 40 constructed in accordance with various teaching of the present invention is depicted inFIGS. 37 through 39 , wherein thetool 104 includes a driving end (commonly known as a Hudson connection) where the driving feature is a set ofparallel tabs 1043 on thetool 104, that desirably mate into a groove defined by fourwalls 1643 on thering 164. In this embodiment, the various similarcanted coil spring 124 features, thebody 154 features 1541 and 1545, and thecollar 114feature 1146 desirably work in the same or similar manners as those described in connection with the embodiment of atool holder 10, as previously described. In this embodiment, instead of a curveddiametric surface 1002 of thetool shaft 100, there is agroove 1042 that desirably retains thetool 104 in position when theballs 144 nest into thegroove 1042. Thering 164 can be attached to thebody 154 in various ways such as, but not limited to, welding, threading and/or bonding. -
FIGS. 40 and 41 depict front and right planar views of one embodiment of an additionalcanted coil spring 145, which could be used on the alternative embodiment of a tool holder 50 (seeFIGS. 45 and 46 ). In this embodiment, diameters H and J can represent the diameters of the spring in a static or resting position of the spring. - Referring to
FIGS. 42 through 55 , there is shown an additional embodiment of totool holder 50 constructed in accordance with various teachings of the present invention, wherein the retention balls, and respective holes for the balls, of prior embodiments have been replaced with a cantedcoil spring 145 andgroove 1551 arrangement in thebody 155. In this embodiment, the cantedcoil spring 145 desirably works in a similar manner to spring previously described, except that the cantedcoil spring 145 desirably retains the tool in a desired position within the tool holder as well as stabilizes thetool 100. Desirably, this arrangement facilitates retention of the tool in a desired position and/or orientation when advanced into the curveddiametric surface 1002 of thetool 100. When thecollar 170 is advanced by thecompression spring 135, the section of the cantedcoil spring 125 is desirably advanced toward axis L, when theconical surface 1706 of thecollar 170 contacts the cantedcoil spring 125. Thecollar 170 can then continue to advance in the axial direction L until the swagedconical surface 1710 of thecollar 170 contacts theradial fillet surface 1556. At this point, the section of the cantedcoil spring 125 will desirably be contacting diameter K (SEEFIGS. 45 and 46 ), which can be defined byradial surfaces 1707 of thecollar 170, and also desirably contacting the curveddiametric surface 1002 of thetool 100. In this embodiment, the various features controlling the cantedcoil spring 120 of thebody 155 and thecollar 170 desirably work in the same or similar manner as those corresponding features in other embodiments of the invention, but the presence of the canted coil springs can obviate the need for supplemental engagement balls or other additional components which may fail at inopportune moments and/or be lost or misplaced during disassembly/repair of the tool holder. - Although the figures in these drawings show two deflections of the
spring 125, and two sets of corresponding engagement features on thebody 155 andcollar 170, those of ordinary skill in the art should understand that these disclosed engagement and locking locations could alternatively be accomplished using only one deflection of thespring 145 and one corresponding set of features on thebody 155 andcollar 170. In a similar manner, those of ordinary skill in the art should appreciate that such actions could also be accomplished with more than two deflections of thespring 125 and/or more than two sets of features on thebody 155 andcollar 170. - In addition, the disclosed embodiment of a
tool holder 50 also depicts cleaning or flushingports 1713, which are radially placed around thecollar 170, in order to easily flush thetool holder 50 from foreign matter and/or to lubricate the tool (if desired). Those of ordinary skill in the art should appreciate that similar features could be added to various components in the other embodiments described herein, includingtool holders - Alternative Configurations
- The various components described herein may be formed in a variety of shapes, sizes and/or configurations. For example, the embodiments may be formed in a variety of shapes and configurations, which will desirably facilitate the use of various shaped tools. Similarly, the various features described herein could include features that are unique to specific attachments without departing from the spirit or essential character of the invention.
- The entire disclosure of each of the publications, patent documents, and other references referred to herein is incorporated herein by reference in its entirety for all purposes to the same extent as if each individual source were individually denoted as being incorporated by reference.
- The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The foregoing embodiments are therefore to be considered in all respects illustrative rather than limiting on the invention described herein. The scope of the invention is thus intended to include all changes that come within the meaning and range of equivalency of the descriptions provided herein.
- Many of the aspects and advantages of the present invention may be more clearly understood and appreciated by reference to the accompanying drawings. The accompanying drawings are incorporated herein and form a part of the specification, illustrating embodiments of the present invention and together with the description, disclose the principles of the invention.
- Although the foregoing inventions have been described in some detail by way of illustration and example for purposes of clarity of understanding, it will be readily apparent to those of ordinary skill in the art in light of the teachings of this invention that certain changes and modifications may be made thereto without departing from the spirit or scope of the disclosure herein.
Claims (20)
1. A tool holder assembly for connecting a rotary tool to a rotary tool driver, the rotary tool including a shaft having a shaft end and a shaft diameter, the tool holder comprising:
a body including a first end configured to connect to a rotary tool driver and a second end configured to receive the rotary tool, the body including a generally cylindrical bore and at least one opening extending through a lateral wall of the body;
a locking sleeve extending around at least a portion of the body, the locking sleeve slidable along a longitudinal axis of the body from a first position to a second position;
a first canted coil spring disposed within the generally cylindrical bore at a location proximate to the second end of the body, a portion of the first canted coil spring extending through the at least one opening;
wherein the portion of the first canted coil spring is not deformed by the locking sleeve when the locking sleeve in in the first position and the portion of the first canted coil spring is deformed by the locking sleeve when the locking sleeve is in the second position.
2. The tool holder assembly of claim 1 , wherein the deformed portion of the first canted coil spring directly engages with and rotationally locks the shaft of the rotary tool within the generally cylindrical bore when the locking sleeve is in the second position.
3. The tool holder assembly of claim 1 , further comprising a longitudinally extending spring positioned between the body and the locking sleeve, the longitudinally extending spring biasing the locking sleeve towards the second position.
4. The tool holder assembly of claim 1 , wherein an inner diameter of at least a first portion of the first canted coil spring is smaller than the shaft diameter of the rotary tool.
5. The tool holder assembly of claim 1 , wherein an inner diameter of at least a portion of the first canted coil spring is smaller than the shaft diameter of the rotary tool when the locking sleeve is in the second position.
6. The tool holder assembly of claim 1 , further comprising a second canted coil spring disposed within the generally cylindrical bore at a location distal from the second end of the body.
7. The tool holder assembly of claim 6 , wherein an inner diameter of at least a portion of the second canted coil spring is smaller than the shaft diameter of the rotary tool when the locking sleeve is in the second position.
8. The tool holder assembly of claim 7 , further comprising a longitudinally extending spring positioned between the body and the locking sleeve, the longitudinally extending spring biasing the locking sleeve towards the second position.
9. The tool holder assembly of claim 1 , further comprising a laterally extending inner surface within the generally cylindrical bore which engages with and rotationally drives a corresponding outer surface on the shaft of the rotary tool.
10. The tool holder assembly of claim 1 , wherein at least a portion of the generally cylindrical bore has a non-circular cross-section.
11. A collet for connecting a rotary tool to a rotary tool driver, the rotary tool including a shaft having a shaft end and a shaft diameter, the collet comprising:
a body including a first end configured to connect to a rotary tool driver and a second end configured to receive the rotary tool, the body including a central bore and first and second lateral openings extending completely through a peripheral wall of the body, the first and second lateral openings longitudinally spaced apart from each other;
a sleeve extending around at least a portion of the body, the sleeve slidable on the body from a first position to a second position;
a first canted coil spring disposed within the central bore at a location proximate to the second end of the body, a portion of the first canted coil spring extending through the at least one opening; and
a second canted coil spring disposed within the central bore at a location distal from the second end of the body, a portion of the second canted coil spring extending through the second lateral opening.
12. The collet of claim 11 , wherein the portion of the first canted coil spring is compressed by the sleeve when the locking sleeve is in the second position.
13. The collet of claim 11 , wherein the portion of the second canted coil spring is compressed by the sleeve when the sleeve is in the second position.
14. The collet of claim 11 , wherein the portion of the first canted coil spring and the portion of the second canted coil spring are each deformed by an inner surface of the sleeve when the sleeve is in the second position.
15. The collet of claim 14 , wherein the deformed portion of the first canted coil spring directly engages with and locks a portion of the shaft of the rotary tool within the central bore when the sleeve is in the second position.
16. The collet of claim 13 , wherein the shaft of the rotary tool further includes a reduced diameter portion proximate to the shaft end, and the portion of the second canted coil spring is compressed at least partially into the reduced diameter portion when the sleeve is in the second position.
17. The collet of claim 11 , wherein the portion of the first canted coil spring contacts an inner surface of the sleeve when the locking sleeve is in the second position.
18. The collet of claim 17 , wherein the portion of the first canted coil spring is elastically deformed by contact with the sleeve when the locking sleeve is in the second position.
19. The tool holder assembly of claim 11 , wherein a transverse cross-section of at least a portion of the central bore is non-circular.
20. The tool holder assembly of claim 11 , further comprising an inner surface portion within the central bore which engages with and rotationally drives a corresponding outer surface of the shaft proximate to the shaft end of the rotary tool.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/541,625 US20190366447A1 (en) | 2016-02-25 | 2019-08-15 | Tool holder with coiled springs |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662299923P | 2016-02-25 | 2016-02-25 | |
US15/442,599 US10532410B2 (en) | 2016-02-25 | 2017-02-24 | Tool holder with coiled springs |
US16/541,625 US20190366447A1 (en) | 2016-02-25 | 2019-08-15 | Tool holder with coiled springs |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US15/442,599 Continuation US10532410B2 (en) | 2016-02-25 | 2017-02-24 | Tool holder with coiled springs |
Publications (1)
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US20190366447A1 true US20190366447A1 (en) | 2019-12-05 |
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US15/442,599 Active 2037-04-01 US10532410B2 (en) | 2016-02-25 | 2017-02-24 | Tool holder with coiled springs |
US16/541,625 Abandoned US20190366447A1 (en) | 2016-02-25 | 2019-08-15 | Tool holder with coiled springs |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US15/442,599 Active 2037-04-01 US10532410B2 (en) | 2016-02-25 | 2017-02-24 | Tool holder with coiled springs |
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US (2) | US10532410B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014051534A1 (en) * | 2012-09-26 | 2014-04-03 | Access Products Group LLC | Quick release connector |
DE102018112681A1 (en) * | 2018-05-28 | 2019-11-28 | Karl Storz Se & Co. Kg | Self-locking coupling device and method |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2593794A (en) * | 1947-07-22 | 1952-04-22 | Resina Automatic Machinery Co | Rotatable cap applying chuck with cap gripping helical spring |
US2999407A (en) * | 1960-06-03 | 1961-09-12 | Arrow Tools Inc | Axial impact tool and work-retainer combination |
US3222096A (en) * | 1963-04-15 | 1965-12-07 | Skil Corp | Rotary tool spindle |
US3819194A (en) * | 1972-10-16 | 1974-06-25 | Domain Ind Inc | Tube holder |
GB1448200A (en) * | 1972-12-13 | 1976-09-02 | Child R E | Rotary chucks |
US3767218A (en) * | 1973-02-21 | 1973-10-23 | Carrier Corp | Tool chuck |
US4174113A (en) * | 1978-05-08 | 1979-11-13 | Dresser Industries, Inc. | Bit retainer for pneumatic tools |
US4902177A (en) * | 1988-10-27 | 1990-02-20 | Terry K. Aitkens | Rapid change tool cutter and driving system |
AU2003257291A1 (en) * | 2002-08-02 | 2004-02-23 | Maxtech Manufacturing Inc. | Quick-connect chuck mechanism |
US20100289198A1 (en) * | 2009-04-28 | 2010-11-18 | Pete Balsells | Multilayered canted coil springs and associated methods |
US9138873B2 (en) * | 2013-02-14 | 2015-09-22 | ToolTech, LLC | Flip socket nut removal tool |
-
2017
- 2017-02-24 US US15/442,599 patent/US10532410B2/en active Active
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2019
- 2019-08-15 US US16/541,625 patent/US20190366447A1/en not_active Abandoned
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US20170246693A1 (en) | 2017-08-31 |
US10532410B2 (en) | 2020-01-14 |
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