This invention relates in general to devices for rakes.
Gathering loose materials, such as leaves, can be done using a hand tool, such as a rake. A traditional rake has a long handle with the rake implement operated close to the ground or surface having the leaves and the user standing holding the handle opposite the rake implement.
Once the leaves are gathered, it is often desired to lift the gathered leaves for placement in a container for transport or disposal. A user often encounters difficulty in lifting the leaves, owing to the need to bend down or kneel down to either pick up the leaves with the user's hands or to use one hand to hold leaves against the rake implement while holding the rake with the other hand.
The present inventor recognized the need for a device that eliminates need of and the stress, strain, and hassle of bending down or kneeling down to pick up leaves or loose materials. The present inventor recognized the need for a device to increase the ease and speed of gathering and lifting leaves or loose materials for disposal or transport. The present inventor recognized the need for a device that enables the user to easily use two hand tools, such as two rakes, at once cooperatively to gather and lift the leaves or loose materials. The present inventor recognized the need for a device that allows the two hand tools to be easily and quickly connected and disconnected so that the two hand tools can be used cooperatively or independently.
A device for connecting two rakes to gather and/or pick up loose materials is disclosed. Each rake has an elongated shaft handle connected to a rake implement comprising tines. The device has a first handle attachment and a second handle attachment.
The first handle attachment has a first rake handle channel, a first bottom end, a first top end, and an elongated first body extending between the first bottom end and the first top end. The first bottom end has a first aperture in communication with the first rake handle channel. The body comprises a first projection and a first recess. The first projection is adjacent the first recess.
The second handle attachment has a second rake handle channel, a second bottom end, a second top end, and an elongated second body extending between the second bottom end and the second top end. The second bottom end has a second aperture in communication with the second rake handle channel. The body comprises a second projection and a second recess. The second projection is adjacent the second recess.
The first projection is removably receivable in the second recess and the second projection is removably receivable in the first recess to join the first handle attachment to the second handle attachment. When the first projection is received in the second recess and the second projection received in the first recess, the first and second handle attachments comprise an open position where the first bottom end is spaced apart from the second bottom end and a closed position where the first bottom end is adjacent the second bottom end. The first handle attachment is completely user separable from the second handle attachment.
Numerous other advantages and features of the present invention will become readily apparent from the following detailed description of the invention and the embodiments thereof, from the claims, and from the accompanying drawings.
The following description is presented to enable any person skilled in the art to make and use the invention. For the purposes of explanation, specific nomenclature is set forth to provide a plural understanding of the present invention. While this invention is susceptible of embodiment in many different forms, there are shown in the drawings, and will be described herein in detail, specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention and is not intended to limit the invention to the specific embodiments illustrated.
In some applications, as shown in
The first handle attachment 12 is identical to the second handle attachment 14 so only the first handle attachment 12 will be described in detail except that the second handle attachment will be discussed where necessary to describe the interworking of the first handle attachment and second handle attachment.
The handle attachment 12 comprises a top side 52, a back side 54, a bottom side or proximal end 13, a left side 58, a right side 60, and a front side 56. The back side 54 is curved as shown in
The front side 56 comprises a lower portion 66, and interlocking portion 68, and an upper portion 70. The lower portion 66 comprises a flat surface. The upper portion 70 comprises a flat surface. The interlocking portion 68 comprises a projection 71 and a recess 72. In some embodiments, as shown in the drawings, the projection and recess comprise triangular shapes. In particular, the projection and recess comprises a scalene triangular shape. In some embodiments, the projection and recess can comprise other shapes such as rectangle, semi-circular, semi-elliptical, or the like.
The backside 54 joins and forms a right angle with the top side 52 as shown in
The projection 71 comprises a first front inclined surface 74, a second front inclined surface 76, and a side inclined surface 78. The first front inclined surface 74 joins the second front inclined surface 76 at an apex 80. The side inclined surface 78 meets with the first front inclined surface 74, the second front inclined surface 76, and the apex 80 on the left side of each as shown in
The first front inclined surface 74 meets the upper portion 70 at an upper valley 82. The second front inclined surface 76 meets the lower portion 66 at a lower intersection 84.
The recess 72 comprises a first front declined surface 86, a second front decline surface 88, and a side decline surface 90. The first front decline surface 86 joins the second front decline surface 88 at a recess valley 92. The side decline surface 90 meets the first front decline surface 86, the second front decline surface 88, and the recess valley 92 on the right side of each as shown in
The first front decline surface 86 meets the upper portion 70 at an upper ridge 91. The second front decline surface 88 meets the lower portion 66 at a lower intersection 94.
The inclined surfaces 74, 76, 78 and the decline surfaces 86, 88, 90 make it easier for the projection to be inserted in the corresponding recess as the projection and recess will self-align the attachments 12, 14 as the projections are received into the recesses.
The left side 58 meets the side inclined surface 78 at a left side edge 96. The right side 60 meets the side declined surface 90 at a right side edge 98. Between the left side edge 96 and the right side edge 98 is an inside wall 100. The inside wall is where the projection 71 meets the recess 72. The inside wall 100 forms a right angle with each of the first front inclined surface 74, the second front inclined surface 76, the first front decline surface 86, the second front decline surface 88. In some embodiments the inside wall 100 is equidistant from the right side edge 98 and the left side edge 96, and similarly, equidistant from the left side 58 and the right side 60.
In some embodiments, the lower portion 66 comprises a fastener aperture 102. The fastener aperture 102 provides communication with the shaft channel 16. A fastener such as a screw may be inserted through the fastener aperture when the handle attachment 12 is mounted on a shaft handle of a tool to secure the handle attachment to the tool handle. In some embodiments, the fastener aperture is equidistant between the lower intersection 94 and the bottom side 13. The fastener aperture may also be equidistant between the right side 58 and the left side 60.
In one embodiment, the intersection of the upper portion 70 with the first front inclined surface 74 forms a 132 degree angle. Referring to
In one embodiment, the first front decline surface 86 and the second front decline surface 88 are positioned in a laterally offset mirror image reflection about the plane of line 104 from the first front incline surface 74 and the second front include surface 76. In this manner, the projection 71 of the first handle attachment 12 will fit surface-to-surface contact or in close proximity thereto within the recess 116 of the second handle attachment 14. The first front incline surface 74 is arranged at 112 degrees from the plane of line 104 in a first direction and at 68 degree in the opposite direction.
In some embodiments, the top width of the top end 52 between the right side 58 and the left side 60 is 125% of the bottom width of the bottom end 13 between the right side 58 and the left side 60. In some embodiments, the top width is 1.25 inches and the bottom width is 1 inch. In some embodiments, the top width is equal to the bottom width. In some embodiments, the distance between the fastener aperture 102 and the bottom and 13 is 125% of the bottom width. In some embodiments, the depth between the rearmost portion of the backside 54 and the apex 80 is 158% of the bottom width.
In some embodiments, the ratio of the distance between a lower length of the lower intersection 84 to the bottom end 13 and a total length of the top side 52 to the bottom side 13 is 3 to 7. In some embodiments, the lower length is three times the bottom width and the total length is seven times the bottom width. In some embodiments, the lower length is 3 inches and the total length is 7 inches.
In some embodiments, an apex width between the side inclined surface 78 at the apex 80 and the inside wall 100 at the apex is 26.4 percent of the top width. In some embodiments, the apex width is 0.33 inch. In some embodiments, the channel 16 is cylindrical having a diameter of ⅞ of an inch.
In some embodiments, the shaft channel 16 extends from the bottom end 13 to the lower intersection 84. In some embodiments, the shaft channel 16 comprises a depth of beyond the bottom 13 but less than to the lower intersection 84. In some embodiments, the shaft channel has a depth of at least to the fastener aperture 102.
It is possible to operate the device 10 opened beyond the open position shown in
The projection 71 of the first handle attachment 12 is in surface-to-surface contact or in close proximity with the walls of the recess 116 of the second handle attachment 14 when the device is in the engaged and closed position. Therefore, the first front inclined surface 74 is in contact or in close proximity to the first front decline surface of recess 116, the second front inclined surface 76 is in contact or close proximity to the second front decline surface of recess 116, the side inclined surface 78 is in contact or close proximity to the side decline surface of recess 116, the apex 80 is in contact or close proximity to the recess valley of recess 116, and the inside wall 100 is in contact or close proximity to the inside wall 118 of attachment 14.
The tool implements or tines 32, 34 of the rakes 20, 22 are placed on opposite sides of the loose debris 35 to be collected, with the working side of the tines facing the loose debris 35. One or both of the first or second handle attachments are leaned toward the other of the first or second handle attachments so that the first and second handle attachment contact each other. Then the user grasps either the shafts 24, 26 or the handle attachments 12, 14, or both, and applies force thereto. The force is applied on a side of the first rake shaft 24 or attachment 12 opposite the projection 71 and the force is applied on a side of the second rake shaft 26 opposite of the projection 114. The force applied moves the rakes 20, 22 and the attachments 12, 14 in the directions A and B respectively of
The projections 71, 114 pivot against the respective recesses 116, 72. More particularly, the first front inclined surface 74 of attachment 12 pivots against an upper ridge 120 of attachment 14, and the upper inclined surface of attachment 14 pivots against the upper ridge 91 of attachment 12. Further, the upper valley 82 of attachment 12 pivots at and against the upper ridge 120 of attachment 14, and the upper valley of attachment 14 pivots at and against the upper ridge 91 of attachment 12. Whether the pivoting occurs along the upper inclined surface or at the upper valley against the corresponding upper ridge depends on the positioning by the user. With force applied by the user in the directions A or B or both, the upper valleys 82 (not labeled for attachment 14) are shaped to draw the corresponding upper ridges 120, 91 to seat and align in the corresponding upper valleys.
When in the engaged closed position, the interlocking of the projections 71, 114 with the corresponding recesses 116, 72, prevents the attachment 12 from moving in the directions C and D of
In
As each attachment 12, 14 is completely separable from the other, the tool 20 to which the attachment is connected can be used independently of the other tool 22. When it is desired to move, lift, or otherwise transport debris with both tools 20, 22, the attachment 12 can be interlocked with the attachment 14 via the respective projections and recesses. After such joint use of tools 20, 22 is finished, one or both tools 20, 22 can thereafter be used independently, without the need of attending to any complex, bulky, time-consuming, or inconvenient mechanism for releasing the attachments 12, 14 from connection with the other.
In some embodiments, the tool 20, 22 has a shaft that in the range of 2 and 6 feet long, inclusive. In some embodiments, the tool 20, 22 has a shaft that is 4 feet long.
In some embodiments, a side inclined wall 146 of a projection 144 is at a 31 degree angle 148 relative to the upper left side 140 adjacent the lower portion 134. The side inclined wall 146 is at a 25 degree angle 150 relative to the upper left side adjacent the upper portion 132.
The handle attachment 130 works with an identical attachment and interlocks projections 144 with recesses 154 in the same matter as attachments 12, 14, except that the attachment 130 has a reduced range of motion between a open and a closed position due to the flat upper portion 132 being perpendicular to an upper side 152 and also being co-planer with the surface of the lower portion 134. The attachment 130 receives the shaft of a tool in a shaft channel 156. The attachment 130 can optionally be secured to a shaft inserted in the channel 156 by securing a fastener, such as a screw (not shown), through the fastener aperture 158 and into the shaft.
In some embodiments, the shaft channel 16, 18, 156 can be sized to create a friction fit with the tool handle shaft to be connected. In some embodiments, the shaft channel 16, 18, 156 can be provided with an adhesive on the interior thereof to permanently or temporarily bond the attachment to the shaft of the tool.
In some embodiments, the attachment 12, 14 is cylindrical and the projection and recess interrupts the cylindrical side wall. The projection extends from the cylindrical side wall, the recess located adjacent to the projection on the cylindrical side wall. In some embodiments, the attachment 12, 14 is entirely cylindrical except for the interrupting projection and recess. In some embodiments, the attachment 12, 14 comprises a square, rectangular, triangular, quadrilateral, elliptical, or other shape in cross-section.
In some embodiments, the attachment comprises plastic, wood, metal, or other suitable natural or synthetic material.
In some embodiments, the upper portion 70 of the first handle attachment 12 comprises a first magnet and the upper portion 112 of the second attachment comprises a second magnet. When the upper portion 70 is moved sufficiently close to the upper portion 112 the magnetic force of attraction between the first magnet and the second magnet will draw the upper portion 70 into contact with the upper portion 112. The magnet may be flush with the surface of the upper surface or maybe closed behind the upper surface.
In some embodiments, the upper portion 70 of the first handle attachment 12 comprises a first hook or loop material of a hook and loop fastener and the upper portion 112 of the second attachment comprises the other of the hook or loop material of the hook and loop fastener. The hook and loop fastener will assist in holding the upper portion 70 in user releasable contact with the upper portion 112.
In some embodiments, the first and second handle attachments are not identical, but the first projection and recess of the first handle attachment is substantially identical to the second projection and recess of the second handle attachment.
From the foregoing, it will be observed that numerous variations and modifications may be effected without departing from the spirit and scope of the invention. It is to be understood that no limitation with respect to the specific apparatus illustrated herein is intended or should be inferred.
This application claims the benefit of U.S. Provisional Patent Application No. 62/080,084, filed on Nov. 14, 2014, which is herein incorporated by reference.
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