Tool container

A tool container (20, 520, 620) has a pair of clamshell housing members (22, 24, 422, 424) hingedly coupled to be moved between opened and closed positions. At least one of the members (22, 24, 422, 424) defines a cavity defined by a base (42, 44, 442, 444) and a wall (58, 60, 62, 64, 458, 460, 462, 464) extending from the base (42, 44, 442, 444), and a two-retaining insert (32, 34, 36, 37, 431, 433) is provided in the cavity. The insert (32, 34, 36, 37, 431, 433) and wall (58, 60, 62, 64, 458, 460, 462, 464) include alternating complementary dovetail tenons (74, 132, 474, 532) and recesses (76, 134, 476, 534) secure a tool-retaining insert in the cavity of the housing member (22, 24, 422, 424). The tool-retaining insert (32, 34, 36, 37, 431, 433) includes a number of tool-receiving recesses (120, 520, 620) therein with tool-receiving cradles (152, 552, 652) and various alternate retaining finger arrangements (124, 524, 525, 624) being provided for releasably retaining elongated tools (170, 570, 670) therein and for facilitating the ease of their removal. Such alternate arrangements including opposed pairs of tool-retaining fingers (124, 524, 525, 624) and split finger (624) configurations. A latch mechanism (28, 428) is included to releasably lock the pair of housing members (22, 24, 422, 424) in their closed position.

BACKGROUND AND SUMMARY OF THE INVENTION
 The present invention relates to tool containers and, more specifically, to
 containers which include inserts to retain the tools within the container.
 Tool users, whether casual or professional, strive to maintain their tools
 in some type of organized fashion. Tool organization enables a user to
 readily find the desired tool, use it, and return it to its storage place.
 Thus, several types of tool containers have been provided to serve such a
 function.
 While most previous tool containers work satisfactorily for their designed
 purpose, these containers have their drawbacks. One such drawback is that
 some containers are not rugged enough to withstand the day-to-day
 punishment to which a professional user subjects his tools. Also, the
 previous containers are often inordinately large, awkward or difficult to
 handle. Further, many previous containers do not provide an aesthetic
 appearance.
 The present invention provides the art with a tool container that overcomes
 the above shortcomings and that is durable and easily used and manipulated
 by the user. The present tool case is rugged enough to withstand the daily
 use of a professional user, while providing a pleasing aesthetic
 appearance.
 In accordance with the invention, a tool container comprises a pair of
 housing members pivotally coupled to open and close with respect to one
 another. At least one of such housing members define a recessed cavity for
 receiving tools such as drill bits, driver bits, or the like. The recessed
 cavity is preferably defined by a base and a peripheral wall extending
 generally perpendicularly or at least transversely from the base. One or
 more tool receiving inserts is permanently secured at any of a variety of
 positions in the housing. The insert has a surface mechanism to secure it
 to the housing member base or wall, which can be comprised of a plurality
 of alternating dovetail recesses and tenons on the insert and on the
 walls. The tenons on either the insert or the walls are received by
 opposing recesses on the other of the insert or the wall. The tenons
 preferably have a front face that is angled with respect to vertical at
 about one (1.degree.) degree. The recesses have a similar surface angled
 correspondingly to the front face of the tenon in order to lock the insert
 within the cavity. The tenons on either the housing member walls or the
 inserts can have generally vertically-extending rib or other protrusion to
 enhance the wedged, frictional interlock therebetween. Alternatively, the
 housing base may have a surface that has a plurality of discontinuities or
 that is "roughened". Likewise, the insert can also have a surface that has
 similar discontinuities or ribs or that is similarly "roughened" so that
 such surfaces of the inserts and the walls can be ultrasonically welded
 together or frictionally interlocked.
 The pivotally attached housing members are preferably provided with a
 locking mechanism including a rail member on each housing member and a
 latch with a channel configuration for sliding on the rail members between
 locked and unlocked positions. The rail members, as well as the channel
 for receiving the rail, are both preferably arcuate in longitudinal and
 lateral directions. Further, the latch can include first and second
 indicia that are of contrasting colors and indicate locked and unlocked
 positions. Alternatively the "locked" and "unlocked" indicia can be formed
 on the container adjacent the latch. The preferred latch member is
 constructed of first inner and second outer members, with the first inner
 member providing rigidity and optionally including a portion which
 projects through the second outer member.
 The tool receiving insert includes a body with a plurality of
 tool-retaining recesses with V-shaped tool-receiving cradles and
 tool-retaining finger portions that preferably self-orientate the tool
 bits in the cradle. The fingers, if necessary, rotate the tool bit to a
 proper orientation (either circumferentially or axially) to seat the tool
 bit with an apex of a hex-shaped tool bit within the apex of the V-shaped
 tool-receiving cradle. The V-shaped cradle preferably has one or more
 apertures dividing the cradle into two spaced V-shaped cradle portions.
 One or more pairs or sets of tool-retaining fingers are positioned
 adjacent this aperture to enable flexing of the fingers which, in turn,
 enables the fingers to spread apart to receive a tool bit being inserted
 into the V-shaped cradle. The fingers can be resilient and can include
 protrusions thereon to urge the tool into a snug, rattle-free engagement
 with the tool-retaining recesses and cradle portions. A wall portion or
 socket is provided at an end of the insert adjacent the tool receiving
 V-shaped cradles. The tools can be slid or snapped into and out of the
 tool-receiving recesses.
 Other objects, features and advantages of the present invention will become
 more fully apparent from the following detailed description of the
 preferred embodiment and the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
 FIGS. 1 through 41 illustrate various exemplary embodiments of tool
 containers in accordance with the present invention. One skilled in the
 art will readily recognize that the principles of the present invention
 are equally applicable to other tool containers or tool-receiving inserts
 for such containers other than those shown merely for purposes of
 illustration in the drawing figures.
 Turning to the figures, particularly FIG. 1, an exemplary tool container is
 shown and designated with the reference numeral 20. The tool container 20
 includes two housing members 22 and 24 pivotally secured together by a
 hinge 26. The housing members 22, 24 also include a locking mechanism 28
 to releasably maintain the container 20 in a closed position.
 In FIG. 2, the container 20 is illustrated in an open position, with
 housing member including one or more tool-receiving or tool-retaining
 inserts 30, 32 and 34. The tool retaining inserts may be used to retain
 tool bits, such as drill bits, driver bits, extensions for such bits or
 other wholly or partially elongated tool items.
 FIGS. 3 and 4 illustrate embodiments like that of FIG. 2, but with inserts
 32, 34, 36 and 37 shown in various or multiple positions or orientations
 in the housing members 22 and 24.
 The housing members 22 and 24 are similar and include recessed cavities 38
 and 40, each defined by bases 42 and 44, respectively and peripheral walls
 46 and 48, respectively. The housing members 22 and 24 have generally
 rectangular shapes with the peripheral walls 46 and 48 including lateral
 walls 50, 52, 54 and 56 and longitudinal walls 58, 60, 62 and 64. The
 longitudinal walls 60 and 62 include a hinge assembly 26 including hinge
 members 68, each having a generally C-shape that snap fits onto respective
 pin members 70 separated by barrel members 72.
 Referring to FIGS. 5 and 7, the longitudinal walls 58, 60, 62 and 64
 include a plurality of alternating dovetail tenons 74 and corresponding
 recesses 76. The tenons 74 are preferably narrower at the top and wider at
 the base, thus having a generally trapezoidal shape. The tenons 74 have a
 front face 78 that is angled with respect to vertical direction at an
 angle of about one (1.degree.) degree. Also, the tenons 74 have side faces
 80 and 82 that define the sides of the recesses 76, and that are likewise
 angled with respect to vertical direction at an angle of about two
 (2.degree.) degrees. The recesses 76, which are defined by the side faces
 80 and 82, include a rear face 84 that is angled with respect to the
 vertical direction. Also, each recess 76 has a larger opening at the top
 of the wall, becoming narrow or tapered near the bases 42 and 44 to form a
 generally overall trapezoidal shape. The tenons 74 and the recesses 76
 thus have dovetail shapes and are adapted to receive the corresponding
 dovetail recesses and tenons, respectively, of the tool retaining inserts
 30, 32, 34, 36 and 37 as seen in FIG. 10. Once the tenons and recesses of
 the walls and inserts are interlockingly coupled with one another, due to
 wedging and frictional forces, they are substantially permanently retained
 within the respective housing cavities.
 Referring to FIGS. 6 and 8, the tool container's locking mechanism 28
 includes a split rail 90 and a latch 92. The rail 90 includes rail
 portions 94 and 96 on respective housing members 24 and 22. The rail
 portion 94 extends above the longitudinal wall 64 to retain the latch 92,
 and the rail portion 96, which extends along approximately half the width
 of the rail 90, fits into a cut-out 98 in the rail portion 94 so that in a
 closed position, as illustrated in FIG. 6, the rail 90 is generally
 continuous. Thus when the latch 92 is slidably moved along the rail 90 to
 a locked position, the rail portion 96 and the rail portion 94 are held
 together by the latch 92, thus latching the housing members 22 and 24
 together in their closed position.
 The rail portions 94 and 96 are preferably arcuate longitudinally along the
 rail 90, as seen in FIG. 1, for example. Likewise, the rail portions 94
 and 96 are arcuate in a direction transverse to the rail 90, as seen in
 FIG. 8. Thus, with the rail 90 being arcuate in two directions, it follows
 the overall contour of the tool container 20. This transverse and
 longitudinally arcuate shape also enhances removal of the housing members
 from their dies after being injection molded or otherwise formed.
 In FIG. 9, the latch 92 has a generally rectangular shape and is preferably
 formed from a first rigid polypropylene inner member 95 and a second
 krayton soft cover or outer layer 97. The cover 97 is molded onto the
 rigid base 95 to provide a soft gripping surface for the user, with the
 latch 92 having an outer arcuate surface 99 adapted to be grippingly
 contacted by the user's thumb or finger and has a pleasing ergonomic feel
 as it is moved between the locked and unlocked positions.
 The outer arcuate surface 99 preferably includes indicia 100 formed in the
 cover member 97 to indicate the locked or unlocked position. Also, as
 shown in FIGS. 6 and 11, the preferred first member 95 includes indicia
 members 102 and 104 that project into and through the cover 97. The
 indicia members 102 and 104 also have an arcuate outer surface consistent
 with the contour of the first member 94. The indicia 102 and 104 can be
 arrows indicating the direction of movement of the latch 92 and are flush
 with the cover 97 as illustrated in FIG. 9. The arrows 102 and 104 are
 preferably yellow in color while the cover as well as indicia 100 are
 black. These or other contrasting colors provide a pleasing aesthetic
 appearance.
 The latch 92 also includes a channel 106 for receiving the rail portions 94
 and 96. The channel 106 is defined by an arcuate base 108, a pair of
 opposing side walls 110 and 112, and a pair of opposing flanges 114 and
 116 extending toward one another from the walls 110 and 112. Thus, the
 channel 106 includes an arcuate base 108 which conforms to the arcuate
 rail portions 94 and 96 and has enclosed side walls 110 and 112 to
 slidably engage the edges 111 and 113 of the rail 90.
 The width of the channel 106 between the flanges 114 and 116 is
 substantially constant over most of its length. However, one of the
 flanges 114 preferably includes a cut-out portion 118, which results in
 the width being larger than at the remaining channel length. Thus, as
 flange 116 is captured under the rail edge 113, and cut-out 118 is placed
 in contact with the rail end 111, the wider channel at the cut-out 118
 enables the flange 114 to be easily snapped onto the rail end 111, thus
 securing the latch 92 onto the rail 90 and rail portions 94 and 96. Also,
 as mentioned above, the arcuate surface 108 is arcuate in shape along the
 channel axis as well as transverse to the channel axis, thus conforming to
 and following the arcuate contour of the rail 90 and enabling smooth
 sliding movement of the latch 92 along the rail 90.
 The tool-retaining inserts 30, 32, 34, 36 and 37 include a plurality of
 tool-receiving recesses 120 and a plurality of tool-retaining fingers 124
 (FIGS. 5 and 16). A tool is thus placed into one of the recesses 120 and
 is maintained in the recess by the retaining fingers 124. The tool
 retaining inserts 30 and 32 may also have a stepped configuration with a
 plurality of curved cut-outs 126 (FIG. 5) enabling the tools to be
 inserted into the stepped portion.
 The sides of the inserts 30, 32, 34, 36 and 37 include mating tenons and
 recesses 132 and 134 to mate, respectively, with recesses 76 and tenons
 74, respectively, of the housing members 22, 24 (see FIGS. 5 and 14-17).
 The tenons 132 have preferred angled front faces 136 and preferred angled
 sides 138 and 140, angled with respect to the vertical at an angle of
 about one (1.degree.) and two (2.degree.) degrees, respectively. The
 tenons 132 are preferably wider at one end, the "top" and narrower at the
 opposite end, the "bottom" of the insert to define a generally trapezoidal
 shape. The recesses 134 are defined by the walls 138 and 140 of the tenons
 and include an angled base 144 (FIG. 15). The base 144 is similarly wider
 at the "bottom" and narrower at the "top" of the insert to define a
 generally trapezoidal shape. Thus, the tool retaining inserts 30, 32, 34,
 36 and 37 are positioned inside of the housing members 22 and 24 so that a
 wedging friction fit is maintained between the housing members and the
 inserts. The friction fit is such that the tool retaining inserts are
 preferably substantially permanently maintained in the housing halves.
 FIGS. 16 and 17 illustrate perspective views of exemplary inserts 34 and
 37, respectively. The insert 34 has a body 150 with eight tool receiving
 recesses 120, each including a pair of tool retaining fingers 124 on each
 side. The tool receiving recesses 120 include a V-shaped tool receiving
 cradle 152 is separated into two cradle portions 154 and 156 by an
 aperture or opening 158. The aperture 158 enhances the molding of the
 insert as well as providing flex for the fingers 124 when they are spread
 apart to receive a tool as will be described herein.
 The preferred fingers 124 of the insert 34 are positioned adjacent the
 aperture 158 and include barbed members 160 at their free ends. The barbs
 160 include a flat surface 161 which helps to retain a tool bit in the
 V-shaped cradle 152. Also, an end wall member 162 is positioned on one
 side of the tool receiving cradles 152 to provide an abutment surface to
 help in the positioning of tools within the cradle 152. The exemplary
 insert 34 has a length or width in a longitudinal direction with respect
 to the elongated tools of about three-quarters (3/4") of an inch. The
 insert 36 (shown in FIGS. 3 and 4) is substantially the same as the insert
 34 except that the exemplary insert 36 has a longitudinal length about two
 and one-half (21/2) times that of the insert 34. Thus, a "pan" portion is
 formed adjacent the wall 162 on the second cradle portion 156. The
 exemplary insert 36 has eight receiving recesses 120 similar to those
 described above for the insert 34.
 Turning to FIG. 17, the insert 37 is similar to insert 34 except that the
 exemplary insert 37 includes five tool receiving recesses 120. The tool
 receiving recesses 120 are substantially the same as those previously
 described, having the V-shaped cradle 152 as well as the fingers 124. The
 insert 37, however, includes a stepped portion 168 which enables other
 types of tools such as sockets to be retained in the insert 37.
 FIGS. 18 through 20 illustrate the insertion of a polygonal cross-section
 shaped tool into the fingers 124 of the various inserts. As shown in FIG.
 18, a tool bit 170 is positioned on top of barbs 160 of the fingers 124.
 The tool 170 has a hexagonal cross-section with a flat portion spanning
 between the two fingers 124. As the tool 170 is forced through the fingers
 124, the fingers 124 spread apart with respect to one another. As the
 fingers 124 spread, the barbs 160 rotate the tool 170'. The rotation
 continues until a pair of flats 176' are between the opposing barbs 160.
 At that time, the tool 170' is self-orientated with an apex 172' pointed
 forward of the apex 174 of the V-shaped cradle 152. The tool 170' is
 continued to be forced down into the V-shaped cradle 152 as illustrated in
 FIG. 20. As this occurs, the apex 172' of the tool seats into the apex 174
 of the V-shaped cradle. Thus, the fingers 124 act to self-align or
 self-orientate the tool 170, 170' in the V-shaped cradle 152, and the
 V-shaped cradle 152 receives the tool 170, 170' prohibiting any loose
 tools within the container.
 The fingers 124 and the V-shaped cradle 152 instantly locate and orient the
 tool bit 170 in position in the tool receiving recess. The barb surfaces
 161 seat on a flat surface 176 of the tool 170' to retain the tool within
 the recess. In the event an apex 172' of the tool 170' is pointing toward
 the apex 174 of cradle 152, as shown in phantom in FIG. 18, the fingers
 124 spread and allow the tool 170' to drop directly into the cradle 152
 with the tool apex 174 aligned to seat in cradle apex 172'.
 In FIGS. 21 through 26, other embodiments of the invention is shown,
 wherein the housing members of the container in FIG. 21 are the same as
 previously discussed, except that the dovetail walls are replaced by
 generally flat walls. The base 42', and the side walls 58' and 60',
 preferably have a roughed raised surface 41. Likewise, as shown in FIG.
 25, the exemplary insert 30' includes side walls and a base which include
 similar roughed surfaces 43. These roughed surfaces 41 and 43 enhance
 ultrasonic welding, for example. The inserts may also be adhered or glued
 to the housing members.
 FIGS. 22 and 23 illustrate an embodiment similar to that of FIGS. 3 and 4,
 wherein the inserts 34', 36' and 37' may be positioned in multiple places
 or various positions within the container. The inserts 34', 36' and 37'
 include the receiving members 120 and finger members 124 as well as the
 V-shaped cradles 152 described above. The walls 58' and 60', however,
 include tenons or projecting members 59 and 61. These projecting members
 59 and 61 are spaced along the walls 58' and 60', but they do not extend
 vertically to the entire height of the walls 58' and 60'. The projecting
 members 59 and 61 act to position the inserts 30', 32', 34', 36' or 37' in
 the container to allow for the multiple positioning of the inserts within
 the housing member. The inserts include recesses or cut-outs 180 which
 receive the projecting members 59 and 61. The cut-outs 180 are sized to
 receive the projecting members 59 and 61 and are positioned such that the
 projecting members position the inserts along the housing member. The
 mating of the projecting member 59 and 61 and the recesses or cut-outs 180
 enable the inserts to then be adhesively glued or ultrasonically welded,
 for example, in order to be secured within the housing member.
 In the case of the inserts 34', 36' and 37', the insert 34' and the insert
 37' would ordinarily include a single cut-out or recess 180 while the
 insert 36' would include two or three recesses 180 to receive the
 projecting members 59 and 61. Also, it should be noted that this
 arrangement could be reversed so that the projecting members would be
 positioned onto the inserts while the recesses would be formed within the
 walls 58' and 60'.
 FIGS. 27 and 28 illustrate yet another embodiment of a tool container
 according to the present invention, wherein a tool container 420 includes
 a pair of housing or clamshell members 422 and 424 pivotally
 interconnected by way of a hinge assembly 426. A latch assembly 428,
 generally similar to that discussed above in connection with the
 previously described embodiments, is slidably movable between unlocked and
 locked positions in order to allow the tool container to be opened and
 retained in a closed position respectively.
 As shown in FIG. 28, the exemplary tool container 420, includes one or more
 tool-receiving inserts, such as the exemplary tool-receiving inserts 431
 and 433. Such tool-receiving inserts 431 and 433 are secured and retained
 within generally hollow interior portions of the clamshell members 422 and
 424. Such hollow or concave interior of the clamshell member 422 is
 defined by a pair of lateral walls 450 and 452 and a pair of longitudinal
 walls 458 and 460. Similarly, the hollow or concave interior portion of
 the clamshell member 424 is defined by a pair of lateral walls 454 and 456
 and a pair of longitudinal walls 462 and 464. The longitudinal walls 458
 and 460 of the clamshell member 422 and the longitudinal walls 462 and 464
 of the clamshell member 424 each preferably include a row of
 longitudinally spaced-apart dovetail tenons 474, with adjacent tenons 474
 being alternatingly separated by recesses 476. Such alternating dovetail
 tenons and recesses 474 and 476 are adapted to receiving one or more of
 the tool-receiving inserts 431 and 433 by way of an interlocking
 frictional engagement with the dovetail tenons 532 and the dovetail
 recesses 534 of either of the tool-receiving inserts 431 or 433, as
 illustrated in FIGS. 29 and 30, and in FIGS. 35 and 36, respectively.
 The general shapes and configurations of the dovetail tenons 532 and the
 dovetail recesses 534 are substantially similar in arrangement and
 function to those discussed above in connection with the
 previously-described embodiments of the invention. However, as can be seen
 in FIGS. 29, 30, 35 and 36, and illustrated in greater detail in FIG. 41,
 the dovetail tenons 532 can be provided with tenon protrusions 533 or
 other protuberances or discontinuities, preferably in the form of a
 vertically-extending rib protruding slightly from the edges of the tenons
 532 in order to enhance the tight frictional interlocking engagement of
 the tool-receiving inserts 431 and 433 with the dovetail tenons 474 and
 the dovetail recesses 476 of the clamshell members 422 and 424. In this
 regard, it should be noted that the materials and configurations chosen
 for the tool-receiving inserts 431 and 433, and for the clamshell members
 422 and 424 can be selected by those skilled in the art to result in a
 substantially permanent frictional or wedging interlocking engagement in
 order to secure the tool-receiving inserts 431 and 432 in a substantially
 permanent installation. Alternatively, as will be readily recognized by
 one skilled in the art, the materials and configurations of the
 tool-receiving inserts 431 and 433 and of the clamshell members 422 and
 424 can be made sufficiently flexible to allow the tool-receiving inserts
 431 and 433 to be selectively removable and re-positionable within the
 clamshell members 422 and 424.
 In a manner similar to that discussed above in connection with the
 previously-described embodiments of the invention, the latch assembly 428
 includes a split rail assembly 490 upon which a latch member 492 is
 selectively slidable between locked and unlocked positions. As is
 described above, the split rail assembly 490 includes a rail portion 494
 on one of the clamshell members 422 or 424, as well as a rail portion 496
 on the other of the clamshell members 422 or 424. As is described above,
 the rail portion 494 preferably includes a cut-out portion 498 that is
 sized and adapted to receive the shorter rail portion 496 such that when
 the latch 492 is slid to its locked position it retains the rail portion
 496 within the cut-out portion 498, thus releasably locking the rail
 portions 494 and 496, and thus the clamshell members 422 and 424, in a
 closed position with respect to each other. The latch assembly 428 can
 include the "locked" and "unlocked" indicia discussed above in correction
 with previously-described embodiments in the invention, or such "locked"
 and "unlocked" indicia 500 can be formed on one or both of the clamshell
 members 422 and 424 of the tool container 420, as shown in FIG. 27.
 FIGS. 29 through 34 illustrate the exemplary tool-receiving insert 431,
 which includes a number of tool-receiving recesses 520 for removably
 receiving any of a plurality of tools 570. The tool-receiving recesses 520
 are especially adapted to removably receive and retain tools 570 having
 hex-shaped shanks with a circumferentially-extending recess 571 extending
 therearound. One skilled in the art will readily recognize, however, that
 elongated tools having no shanks or shanks of other cross-sectional shapes
 can also be removably inserted and retained within the tool-receiving
 recess 520.
 The preferred tool-receiving recesses 520 each include a generally V-shaped
 cradle 552, and a pair of tool-retaining fingers 524 adjacent the V-shaped
 cradle 552. A second or "rear" set of tool-retaining fingers 525 is also
 provided within the tool-receiving recesses 520, with the second "rear"
 tool-retaining fingers 525 having open spaces 527 disposed on either side.
 The second or "rear" set of tool-retaining fingers are adapted to engage
 the tool 570 on an opposite side thereof from the first set of
 tool-retaining fingers 524. In this regard, the second or "rear" set of
 tool-retaining fingers 525 preferably include finger protrusions 529
 protruding inwardly therefrom in a direction toward the tool 570. Thus, as
 a tool 570 is being inserted into the tool-receiving recess 520, as
 illustrated in FIG. 31, its end first engages the flexible "rear" set of
 tool-retaining fingers 525, which resiliently deflect as the tool 570 is
 inserted and pushed toward the end wall socket portion 562. Once the tool
 570 has been fully inserted, however, as illustrated in FIGS. 32 and 33,
 the finger protrusions 529 on the "rear" fingers 525 serve to resiliently
 urge the tool 570 "upwardly" toward the tool-retaining fingers 524, thus
 assuring a snug engagement so that the tool 570 will not rattle or slide
 out of the tool-receiving recess until it is purposefully removed by the
 user.
 When the user wishes to remove the tool 570 from the tool-receiving recess
 of the tool-retaining insert 431, he or she merely lifts the free end of
 the tool 570 upwardly, as illustrated in FIG. 34. Such upward movement of
 the tool 570, with the end of the tool 570 pivoting within the end wall
 socket portion 562, forces the first tool-retaining fingers 524 to
 resiliently deflect and spread until the tool 570 passes beyond them and
 is then free for easy removal from the tool-receiving recess 520.
 Alternatively, the user can remove the tool 570 from the tool-receiving
 recess 520 by merely sliding the tool 570 longitudinally outwardly from
 the tool-receiving recess 520. Once the tool 570 passes beyond the finger
 protrusions 529 on the "rear" tool-retaining fingers 525, the tool 570
 becomes more loosely retained and is thus free to be easily slid from
 engagement with the tool-retaining fingers 524 and hence outwardly from
 the tool-receiving recess 520.
 FIGS. 35 through 39 illustrate the exemplary tool-receiving insert 433,
 which includes a number of tool-receiving recesses 620 for removably
 receiving any of a plurality of tools 670 adapted especially for removably
 retaining tool items with hex-shaped shanks, but also capable of retaining
 shankless tools or tools having other cross-sectional shapes.
 Such tool-receiving recesses 620 include generally V-shaped cradles 652 and
 a ridge 635 at their outer ends. Opposed split or spaced-apart
 tool-retaining fingers 624 are provided, but with adjacent tool-retaining
 fingers 624 on adjacent tool-receiving recesses 620 being interconnected
 by a connecting wall 665, which is perhaps best seen in FIGS. 35 and 36.
 Such tool-retaining fingers 624 are generally aligned longitudinally with
 the open spaces 627 within each tool-receiving recess 620 and
 substantiually divide each open space 627 into two open spaces on either
 longitudinal side of the split tool-retaining fingers 624 and one open
 space longitudinally between the longitudinally split pairs of fingers.
 This results effectively in first and second sets or pairs of
 tool-retaining fingers 624 in each tool-receiving recess 620, with each
 pair having open spaces 627 on each longitudinal side. Each of the sets of
 tool-retaining fingers 624 on each tool-receiving recess 620 preferably
 includes a barbed portion 660 with a generally flat lower surface 661. At
 the inward end of each tool-receiving recess 620 an end wall 662 is
 provided with one or more steps 678 on adjacent side walls.
 As is illustrated in FIGS. 37 and 38, a tool 670 is preferably inserted
 into the tool-receiving recess 620 at a slight angle in order to clear the
 outer ridge 635 and begin to slide under the flat surfaces 661 of the
 barbs 660 of the tool-retaining fingers 624. At this position, as
 illustrated in FIG. 37, the inner end of the tool 670 first abuts the rear
 portion of the V-shaped cradles 652 but is then pushed downwardly by the
 user at its free end in order to cause the tool 670 to pivot about the
 ridge 635 in order to allow the inner end to clear the rear portion of the
 V-shaped cradle 652. The tool 670 can then be slid into contact with the
 end wall 662, with the steps 678 tending to wedge or frictionally engage
 the inner end of the tool bit 670 to retain it in place, as shown in FIGS.
 38 and 39.
 In a manner similar to that described above in connection with the tool 570
 and the tool-retaining insert 431, the tool 670 can be removed by lifting
 its free end upwardly so that its inner end pivots with respect to the end
 wall 662, thus spreading the resilient tool-retaining fingers 624, as is
 illustrated in FIG. 40, until the tool 670 is free from the tool-receiving
 recess 620. Alternatively, the tool 670 can be merely slid longitudinally
 outwardly free from the tool-receiving recess 620.
 The foregoing discussion discloses and describes merely exemplary
 embodiments of the present invention for purposes of illustration only.
 One skilled in the art will readily recognize from such discussion, and
 from the accompanying drawings and claims, that various changes,
 modifications, and variations can be made therein without departing from
 the spirit and scope of the invention as defined in the following claims.