WO2013055306A1 - Cart accessory handle for lifting and dumping of wheelbarrow cart - Google Patents

Cart accessory handle for lifting and dumping of wheelbarrow cart Download PDF

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Publication number
WO2013055306A1
WO2013055306A1 PCT/US2011/001958 US2011001958W WO2013055306A1 WO 2013055306 A1 WO2013055306 A1 WO 2013055306A1 US 2011001958 W US2011001958 W US 2011001958W WO 2013055306 A1 WO2013055306 A1 WO 2013055306A1
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WO
WIPO (PCT)
Prior art keywords
handle
cart
wheelbarrow
bin
quick
Prior art date
Application number
PCT/US2011/001958
Other languages
French (fr)
Inventor
John Skijus
Thomas Berinato
Original Assignee
Stable Innovations Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US13/317,337 external-priority patent/US8714570B2/en
Priority claimed from US13/317,335 external-priority patent/US8684374B2/en
Priority claimed from US13/317,336 external-priority patent/US8636289B2/en
Application filed by Stable Innovations Ltd. filed Critical Stable Innovations Ltd.
Publication of WO2013055306A1 publication Critical patent/WO2013055306A1/en
Priority to US14/252,165 priority Critical patent/US20140234069A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B1/00Hand carts having only one axis carrying one or more transport wheels; Equipment therefor
    • B62B1/18Hand carts having only one axis carrying one or more transport wheels; Equipment therefor in which the load is disposed between the wheel axis and the handles, e.g. wheelbarrows
    • B62B1/20Hand carts having only one axis carrying one or more transport wheels; Equipment therefor in which the load is disposed between the wheel axis and the handles, e.g. wheelbarrows involving parts being collapsible, attachable, detachable or convertible
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00Accessories or details specially adapted for hand carts
    • B62B5/06Hand moving equipment, e.g. handle bars
    • B62B5/061Hand moving equipment, e.g. handle bars both ends or periphery of cart fitted with handles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00Accessories or details specially adapted for hand carts
    • B62B5/06Hand moving equipment, e.g. handle bars
    • B62B5/067Stowable or retractable handle bars

Definitions

  • the present invention relates to dual handled liftable wheelbarrows and carts.
  • Carts and wheelbarrows are well represented in the prior art. Some carts are general purpose, while others are designed for a specific use. Wheelbarrows are used commonly both on the farm as well as the construction site. A stable for the use of horses requires frequent cleaning and moving of used straw from the stalls to a dumping area which can be a dumpster with high sides. Carts with two wheels and a deep bin are often used.
  • Wheelbarrows with one wheel are also used at times for the same purpose to move the used straw. Since the carts and wheelbarrows for stall cleaning service must be emptied in an efficient manner, there is a need for efficient and safe unloading of straw, hay and other organic debris into collection receptacles, such as dumpsters and compost bins.
  • a stable cart or wheelbarrow cart is heavy and has a handle or handles on only one end of the bin for pushing, it is difficult for a second groom to help lift and dump the contents.
  • United States Patent Number 2,350,062 of Mosier shows a four wheel cart with small wheels, a low bin portion, and a front pivoted steering arrangement for the two front wheels. Besides a rod-mounted front pulling handle, a second pushing handle is mounted to the bin at the rear.
  • United States Patent Number 6,139,029 of Shaw relates to a portable two- wheeled utility cart with high handles placed at two opposite sides. Besides these high handles extending from the bin ends, a carrying handle or grip is centrally attached to the upper margin of each of the bin ends to lift the cart or to maneuver it into a motor vehicle. With a lower bin and high handles, this cart is unwieldy to tip sideways. The short centrally mounted grips limit the dumping torque that can be applied to the cart.
  • United States Patent Number 5,070,687 of Schweigert in one embodiment of a grass collecting apparatus, shows a fabric cover fitted over an array of removable insert containers in a tractor-attached bagger for collecting grass clippings.
  • the fabric cover is manually moved with the help of a support frame to one end of the bagger attachment bin to gain access to the insert containers for emptying.
  • a stable cart or wheelbarrow cart enables two users to quickly lift and dump a full wheelbarrow cart into a raised collection receptacle, such as a dumpster or compost bin.
  • the accessory handle of this invention attached to the bin opposite to the conventional pushing handle facilitates a two-person operation in an ergonomic fashion. By equalizing the height of the front and rear handles, this adds to user safety, because it enables the two lifters to lift the wheelbarrow under equal lifting forces, thereby preventing one or both of the lifters from slipping and falling during the lifting process.
  • car refers to a wheeled transporter bin having a pair of wheels connected by an axle and the term “wheelbarrow” refers to a wheeled transporter bin having a single wheel.
  • wheelbarrow refers to a wheeled transporter bin having a single wheel.
  • the embodiments of the present invention are meant to be applicable to either a cart or a wheelbarrow, since they both refer to wheeled transporter bins.
  • the front handle assembly includes a centrally mounted wide handle with a cushioned grip that can swivel to a working position, by simply pulling the cushioned portion out of a nesting parked position against the cart bin, on a side of the cart or wheelbarrow having the conventional pushing handles.
  • a second embodiment adds an adjustment for rotating the grasped section to adjust its height when mounted to the cart.
  • the front handle swivels on a bracket to a desired fixed working position and is then locked in place using a ratchet member and tightening knob.
  • two separated fixed short front handles are attached to the cart or wheelbarrow bin instead of a single centrally mounted wide handle.
  • the front auxiliary handle (or pair of fixed short handles) has an equal height to that height of the rear conventional pushing handle, when the auxiliary handle is at a deployed lifting height; with the equal height being at a level close to the top of the wheelbarrow bin that is most useful for lifting and dumping.
  • This equal height of the front and rear handles enables two respective lifting users to have these respective front and rear handles at equal chest height when tipping the contents of the wheelbarrow cart into a dumpster or compost bin.
  • an easily removable fabric cover extends over the top of a bin or tub filled with used straw or other debris, to trap the load within the confines of the vehicle.
  • the cover panel is simply pulled out of a storage space along one side of bin, stretched over the load, and locked in place on the opposite side.
  • the free end of the fabric is simply unlatched and rewound on a drum within the storage space. In one embodiment, this is done manually with a crank knob.
  • the fabric is urged into the storage space by a spring in a similar fashion to that of a window shade.
  • the fabric is preferably a light canvas, although other materials such as flexible plastic can be used.
  • the auxiliary handle includes an elongated rod connected at both ends by each of a pair of quick-disconnect clamps.
  • This handle with two quick-disconnect clamps attached at opposite ends of the elongated rod can also be used for moving plywood, panels, table tops, doors or other large, flat items.
  • the quick- disconnect feature is based on a modification of the well-known QUICK-GRIP® clamp under an efficient manner, the IRWIN® brand of Irwin Industrial Tool Company.
  • These quick-disconnect clamps feature a ratcheting mechanism which reduces hand force to achieve high clamping pressure; they also include a quick-release lever.
  • the modification optimally involves elongating one handle of each clamp and attaching a rod attachment to it, so that the rod can extend between opposite rod attachments so that the rod can provide a lifting handle on the wheelbarrow or cart, at the front end opposite the rear end with a conventional pushing handle assembly.
  • One such clamp is used at each rod end.
  • the method would be to lift both equal height front and rear handles of the cart or
  • Figure 1 is a perspective view of a two wheel stable wheelbarrow cart with a swiveling front accessory front handle mounted for lifting and dumping.
  • FIG. 2 is a close-up exploded perspective detail view of the handle assembly of
  • Figure 3 is a sectional elevation detail of the handle assembly of Figure 2 taken along view lines "3-3" of Figure 1.
  • Figure 4 is a perspective view of a second embodiment handle with a tilt ratchet to allow the handle to be selectively angled.
  • Figure 5 is a perspective view of the handle assembly of Figure 2 installed on the front of a wheelbarrow.
  • Figure 5a is a detailed close-up view of an adapter for installing the handle assembly of Figure 2 on the front of a curved tub wheelbarrow.
  • Figure 6 is a perspective view of an alternate embodiment showing a cart fitted with two separate front accessory handles.
  • Figure 7 is a side elevation of a cart showing the relative height of a front accessory handle of Figure 1 relative to the rear pushing handle.
  • Figure 8 is a perspective view of the two persons dumping the debris contents of the cart of Figure 1 into a raised receptacle, such as a dumpster or compost bin.
  • Figure 9 is a perspective view of an alternative embodiment of this invention for a stable cart full of debris, such as used straw, with a straw trapper accessory in place over the top of the bin of the stable cart.
  • Figure 10 is an exploded perspective detail close-up view of the straw trapper accessory of Figure 9.
  • Figure 11 is a side elevation of a stable cart showing the mounting of the straw trapper to the side of the bin and showing the relative equal height of a front accessory handle relative to the same height of a rear pushing handle.
  • Figure 12 is a perspective view of two grooms dumping a stable cart, with a straw trapper accessory attached and with a fabric panel rolled in a storage compartment.
  • Figure 13 is a perspective view of a further alternate embodiment of a cart with a quick-disconnect handle of the present invention.
  • Figure 14 is an enlarged exploded perspective view of the embodiment of Figure 13 with quick-disconnect handles.
  • Figure 15 is a close-up detail view of one quick-disconnect clamp with a further height adjustable ratchet feature.
  • Figure 16 is a side elevation view of the cart of Figure 13 with quick-disconnect clamps, showing the matching heights of the quick-disconnect handle and the rear pushing handle.
  • Figure 17 is a perspective view of two grooms dumping a wheelbarrow cart full of used straw into a dumpster or compost bin wherein the stable wheelbarrow cart is fitted with a quick-disconnect handle.
  • Figure 18 is a perspective view of a person grasping a panel of plywood vertically using a quick-disconnect handle of Figure 14.
  • Figure 19 is a perspective view of a person moving a tabletop horizontally using a quick-disconnect handle of Figure 14.
  • Figure 1 shows cart 1 with bin 3, rear pushing handle 5, wheels 7 and auxiliary handle 10. While Figure 1 shows a two wheeled cart 1, it is noted that the present invention is also applicable to a single wheeled wheelbarrow with a handle assembly including a pair of rear-extending handle posts, such as shown in Figure 5 or Figure 5a.
  • FIG. 1 shows the parts of handle assembly 10 and the method of attachment.
  • the crossection view of Figure 3 further describes handle 10 assembly.
  • Figure 3 is a crossectional view taken along lines "3-3" of Figure 1.
  • attachment plate 12 holds the ends of handle 14 and has bosses 18 which fit inside holes 21 in bin 3.
  • the attachment is completed with screws 20 and washers 22, wherein screws 20 engage threaded blind holes in bosses 18.
  • Handle 14 with resilient handle grip 16 is held against the end of bin 3, when not in use, by friction within the inside surfaces of channel 24, which slightly deforms resilient handle grip material 16.
  • FIG. 4 shows the details of a second embodiment accessory front handle assembly.
  • Frame 26 is rigidly attached to fixed ratchet member 30 while handle 28 is rigidly attached (as by welding, for example) to rotatable ratchet 32.
  • Screw knob 34 forces the ratchet faces together to lock the position of handle 28 in any desired position as indicated by the two phantom views. This is ergonomically superior to the assembly of handle 10, as it affords rigidity to a handle 28 during the lifting and dumping procedure.
  • the ratchet assembly 32 includes a fixed ratchet member 30 mounted on one of said forwardly extending members 28 of the bracket, a mating, rotatable ratchet member 32 attached to the corresponding end arm of the adjustable handle, and a screw knob 34 to separate the fixed and rotatable ratchet members 30, 32 temporarily, to allow the resilient grip 16 to be positioned at any one of multiple positions between the parked position and the fully deployed position, whereby the elongated resilient grip 16 is fixed in whatever position it is held, by the matching and fully mated ratchet members 30, 32.
  • Figure 5 shows handle assembly 10 attached to the end of wheelbarrow 40 with curved tub 41, frame 44 and single wheel 42.
  • Figure 5 a shows an alternate embodiment for a wheelbarrow with a curved bull nosed front end, where flat plate bracket 12 with handle 10 held in place with a flexible adapter 12a, having a curved surface 12b, adapted to conform to the curved bull nosed front end of the wheelbarrow.
  • Figure 6 shows the third embodiment of accessory handle in which two separate short handles 46 substitute for a single centrally located handle.
  • the separation of handles 46 afford good torque transfer to bin 3 for dumping debris 9 into a dumpster or compost bin.
  • Figure 7 illustrates the equal height of the rear pushing handle 5 and the grip 16 of handle assembly 10 when handle is at deployed height. It is this equal height at the level close to the top of bin 3 that is most useful for lifting and dumping.
  • Figure 8 shows two persons 50, 52 rotating bin 3 in the direction of the arrow via equal height handles 5 and 10 to dump debris 9 into raised collection receptacle 53, such as a dumpster or compost bin.
  • Figure 9 shows an alternate embodiment for a stable cart with straw trapper accessory 60 attached and in use with fabric panel 68, deployed over the open top of the bin trapping straw 9 inside.
  • Figure 10 shows the parts of straw trapper 60 including storage chamber 70, backing plate 66, front clamp extensions 62, clamping knobs 64, rewind crank knob 72, fabric panel 68, locking loops 74, far edge retainers 78 and loop knobs 76.
  • knob 72 is used to rewind fabric panel 68 manually back into storage chamber 70, having a roller therein, to expose the bin interior.
  • the spaced far edge retainers 78 are mounted on an outside surface of the second side wall.
  • Each far edge retainer 78 has an extended loop knob 76 to engage the loops 74 mounted on the free edge of the fabric panel 68, whereby, when the fabric panel 68 is pulled off of the roller and is extended over the open top of the bin 3, the loops 74 are placed over the loop knobs 76, so that the fabric panel 68 remains in place to retain the straw 9 within the bin 3 while the bin 3 is stored or transported, wherein the fabric panel 68 is rewound onto the roller, when the loops 74 are released from the loop knobs 76 and the rewind crank knob 72 is rotated.
  • no rewind crank knob 72 is used since an internal spring rewinds fabric 68 when loops 74 are released from engagement with loop knobs 76.
  • Figure 11 shows the side of the stable cart where the straw trapper accessory 60 is attached.
  • Backing plate 66 (not visible) lies against the inside of bin 3 while clamp extensions 62 permit clamping to the outside surface of bin 3 under the top lip of bin 3.
  • Figure 11 also illustrates the equal height of the rear pushing handle 5 and the grip 16 of handle assembly 10 when handle is at its deployed height. It is this equal height at the level close to the top of bin 3 that is most useful for lifting and dumping. This height also enables the users, such as two grooms 50, 52 at a racetrack, to have the respective handles 5 and 110 at equal chest height when the biceps are strongest at an ergonomic right angle, when tipping the contents 9 of the wheelbarrow cart 10 into a dumpster 53.
  • the handles 5 and 110 were much higher than the top of the bin 3 of the wheelbarrow cart, then the users would have to uncomfortably extend the users' arms over the users' respective head areas, so that the top of the bin 3 was at the height level of the top of the raised collection receptacle, such as dumpster or compost bin 53.
  • this adds to user safety, because it enables the two lifters to lift the wheelbarrow / cart 10 under equal lifting forces, thereby preventing one or both of the lifters from slipping and falling during the lifting process.
  • Figure 12 shows grooms 50 and 52 dumping the contents of a stable cart bin 3 into a raised collection receptacle, such as dumpster or compost bin 53.
  • Groom 50 is shown grasping rear handle 5 of the wheelbarrow / cart, while groom 52 is using front handle assembly 10.
  • fabric panel 68 has been wound up inside storage chamber 70 mounted to a stable wheelbarrow (instead of a two wheel cart) with the accessory handle mounted on the front of the tub, groom 50 would be grasping the ends of two separate pushing handles as commonly used on wheelbarrows.
  • the cart can be used to transport yard debris into the raised walled confines of a compost container.
  • Figure 13 shows a debris hauling cart 100 with a bin 3, rear conventional pushing handle 5 and wheels 7.
  • a quick-disconnect handle 102 is shown attached at the front top of bin 3.
  • Figure 14 shows various parts of the accessory handle 102 of Figure 3.
  • This first embodiment has one modified quick connect disconnect Irwin type clamp 104 at each end of handle rod 112.
  • Handle rod 112 is optionally in two parts attached with a twist-lock sleeve 114 at its center to facilitate length adjustment.
  • Each clamp 104 has one elongated operating handle 106 with a rod attachment at its distal end.
  • Quick release levers 108 release clamping pads 110 from the bin 3 of the wheelbarrow/cart.
  • Figure 15 shows the modifications for a further embodiment 120 which permits height adjustment by virtue of the right angle rod extension 126 which can be rotated up or down.
  • elongated handle of each of the clamps 122 ends in a fixed ratchet member.
  • a matching rotatable ratchet member is attached to each end of handle 126; this can be locked in any position of rotation via locking knob 128.
  • Figure 16 illustrates the matching heights of quick-disconnect handle 102 and molded rear handle 5 for ease in lifting and dumping.
  • Figure 17 shows groom 50 grasping the rear handle 5 while groom 52 grasps handle 102 as used straw is dumped into dumpster 53.
  • Figure 18 shows workman 50 lifting a plywood panel 130 as grasped vertically by quick-disconnect handle 102.
  • Figure 19 illustrates the use of handle 102 in grasping and moving a tabletop 134 horizontally.
  • Other flat panels can be grasped and moved, such as drywall panels doors and other planar substrates.
  • certain terms and visual depictions are used to illustrate the preferred embodiment. However, no unnecessary limitations are to be construed by the terms used or illustrations depicted, beyond what is shown in the prior art, since the terms and illustrations are exemplary only, and are not meant to limit the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)

Abstract

A second handle is attached to the front of a wheelbarrow / cart to enable two persons to quickly lift and dump the contents of a full wheelbarrow / cart into a dumpster or walled compost bin. The height of the second handle is equal to the height of the first rear pushing handle or handles, to provide equal lifting force by two lifters, one at each end of the wheelbarrow / cart.

Description

CART ACCESSORY HANDLE FOR LIFTING
AND DUMPING OF WHEELBARROW CART FIELD OF THE INVENTION
The present invention relates to dual handled liftable wheelbarrows and carts.
BACKGROUND OF THE INVENTION
Carts and wheelbarrows are well represented in the prior art. Some carts are general purpose, while others are designed for a specific use. Wheelbarrows are used commonly both on the farm as well as the construction site. A stable for the use of horses requires frequent cleaning and moving of used straw from the stalls to a dumping area which can be a dumpster with high sides. Carts with two wheels and a deep bin are often used.
Wheelbarrows with one wheel are also used at times for the same purpose to move the used straw. Since the carts and wheelbarrows for stall cleaning service must be emptied in an efficient manner, there is a need for efficient and safe unloading of straw, hay and other organic debris into collection receptacles, such as dumpsters and compost bins.
In transporting the used straw from the cleaned-out stables to the dumping area, straw at or near to the top of the cart bin is often blown or jostled off the cart trailing debris along the route. The alternative is to use a fork to transfer portions of the cart contents over the edge of the dumpster or compost bin, thereby almost surely spilling some in the vicinity of the dumpster or compost bin.
Additionally, since a stable cart or wheelbarrow cart is heavy and has a handle or handles on only one end of the bin for pushing, it is difficult for a second groom to help lift and dump the contents.
United States Patent Number 2,350,062 of Mosier shows a four wheel cart with small wheels, a low bin portion, and a front pivoted steering arrangement for the two front wheels. Besides a rod-mounted front pulling handle, a second pushing handle is mounted to the bin at the rear.
United States Patent Number 4,223,907 of Kelly reveals a separable mortar cart with two attached separate deep bins and a total of six wheels. The intent is to transport a large amount of material substantially filling both bins from a supply point to a distribution point in a unitary configuration by a single worker pushing on either of the handles attached to opposite ends of the composite cart rolling on four large wheels. Upon reaching a distributing point, the cart is separated and each half is handled by one worker using two large wheels and a third smaller wheel that is now permitted to touch the ground. In this manner, the lower weight of one bin would be easily supported by scaffolding. These are heavy duty carts which are not designed for lifting in either separated or unitary
configurations by the single or two handles respectively.
United States Patent Number 6,139,029 of Shaw relates to a portable two- wheeled utility cart with high handles placed at two opposite sides. Besides these high handles extending from the bin ends, a carrying handle or grip is centrally attached to the upper margin of each of the bin ends to lift the cart or to maneuver it into a motor vehicle. With a lower bin and high handles, this cart is unwieldy to tip sideways. The short centrally mounted grips limit the dumping torque that can be applied to the cart.
United States Patent Number 5,070,687 of Schweigert, in one embodiment of a grass collecting apparatus, shows a fabric cover fitted over an array of removable insert containers in a tractor-attached bagger for collecting grass clippings. The fabric cover is manually moved with the help of a support frame to one end of the bagger attachment bin to gain access to the insert containers for emptying.
SUMMARY OF THE INVENTION
A stable cart or wheelbarrow cart enables two users to quickly lift and dump a full wheelbarrow cart into a raised collection receptacle, such as a dumpster or compost bin. The accessory handle of this invention attached to the bin opposite to the conventional pushing handle facilitates a two-person operation in an ergonomic fashion. By equalizing the height of the front and rear handles, this adds to user safety, because it enables the two lifters to lift the wheelbarrow under equal lifting forces, thereby preventing one or both of the lifters from slipping and falling during the lifting process.
The term "cart" refers to a wheeled transporter bin having a pair of wheels connected by an axle and the term "wheelbarrow" refers to a wheeled transporter bin having a single wheel. However, the embodiments of the present invention are meant to be applicable to either a cart or a wheelbarrow, since they both refer to wheeled transporter bins.
In a first embodiment the front handle assembly includes a centrally mounted wide handle with a cushioned grip that can swivel to a working position, by simply pulling the cushioned portion out of a nesting parked position against the cart bin, on a side of the cart or wheelbarrow having the conventional pushing handles.
A second embodiment adds an adjustment for rotating the grasped section to adjust its height when mounted to the cart. In the second embodiment, the front handle swivels on a bracket to a desired fixed working position and is then locked in place using a ratchet member and tightening knob.
In a third embodiment, two separated fixed short front handles are attached to the cart or wheelbarrow bin instead of a single centrally mounted wide handle.
The front auxiliary handle (or pair of fixed short handles) has an equal height to that height of the rear conventional pushing handle, when the auxiliary handle is at a deployed lifting height; with the equal height being at a level close to the top of the wheelbarrow bin that is most useful for lifting and dumping. This equal height of the front and rear handles enables two respective lifting users to have these respective front and rear handles at equal chest height when tipping the contents of the wheelbarrow cart into a dumpster or compost bin.
In further embodiments for a stable cart or wheelbarrow of this invention, an easily removable fabric cover extends over the top of a bin or tub filled with used straw or other debris, to trap the load within the confines of the vehicle. The cover panel is simply pulled out of a storage space along one side of bin, stretched over the load, and locked in place on the opposite side. To remove, the free end of the fabric is simply unlatched and rewound on a drum within the storage space. In one embodiment, this is done manually with a crank knob. In an alternate embodiment, the fabric is urged into the storage space by a spring in a similar fashion to that of a window shade. The fabric is preferably a light canvas, although other materials such as flexible plastic can be used.
In an alternate embodiment, the auxiliary handle includes an elongated rod connected at both ends by each of a pair of quick-disconnect clamps. This handle with two quick-disconnect clamps attached at opposite ends of the elongated rod can also be used for moving plywood, panels, table tops, doors or other large, flat items. The quick- disconnect feature is based on a modification of the well-known QUICK-GRIP® clamp under an efficient manner, the IRWIN® brand of Irwin Industrial Tool Company. These quick-disconnect clamps feature a ratcheting mechanism which reduces hand force to achieve high clamping pressure; they also include a quick-release lever. The modification optimally involves elongating one handle of each clamp and attaching a rod attachment to it, so that the rod can extend between opposite rod attachments so that the rod can provide a lifting handle on the wheelbarrow or cart, at the front end opposite the rear end with a conventional pushing handle assembly. One such clamp is used at each rod end.
With these embodiments for adding a front handle to a wheelbarrow or cart, the method would be to lift both equal height front and rear handles of the cart or
wheelbarrow, to tip the wheelbarrow or cart over the edge of the dumpster or compost bin and to dump its entire contents in one motion.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention can best be understood in connection with the accompanying drawings. It is noted that the invention is not limited to the precise embodiments shown in drawings, in which:
Figure 1 is a perspective view of a two wheel stable wheelbarrow cart with a swiveling front accessory front handle mounted for lifting and dumping.
Figure 2 is a close-up exploded perspective detail view of the handle assembly of
Figure 1.
Figure 3 is a sectional elevation detail of the handle assembly of Figure 2 taken along view lines "3-3" of Figure 1.
Figure 4 is a perspective view of a second embodiment handle with a tilt ratchet to allow the handle to be selectively angled.
Figure 5 is a perspective view of the handle assembly of Figure 2 installed on the front of a wheelbarrow.
Figure 5a is a detailed close-up view of an adapter for installing the handle assembly of Figure 2 on the front of a curved tub wheelbarrow.
Figure 6 is a perspective view of an alternate embodiment showing a cart fitted with two separate front accessory handles.
Figure 7 is a side elevation of a cart showing the relative height of a front accessory handle of Figure 1 relative to the rear pushing handle.
Figure 8 is a perspective view of the two persons dumping the debris contents of the cart of Figure 1 into a raised receptacle, such as a dumpster or compost bin.
Figure 9 is a perspective view of an alternative embodiment of this invention for a stable cart full of debris, such as used straw, with a straw trapper accessory in place over the top of the bin of the stable cart. Figure 10 is an exploded perspective detail close-up view of the straw trapper accessory of Figure 9.
Figure 11 is a side elevation of a stable cart showing the mounting of the straw trapper to the side of the bin and showing the relative equal height of a front accessory handle relative to the same height of a rear pushing handle.
Figure 12 is a perspective view of two grooms dumping a stable cart, with a straw trapper accessory attached and with a fabric panel rolled in a storage compartment.
Figure 13 is a perspective view of a further alternate embodiment of a cart with a quick-disconnect handle of the present invention.
Figure 14 is an enlarged exploded perspective view of the embodiment of Figure 13 with quick-disconnect handles.
Figure 15 is a close-up detail view of one quick-disconnect clamp with a further height adjustable ratchet feature.
Figure 16 is a side elevation view of the cart of Figure 13 with quick-disconnect clamps, showing the matching heights of the quick-disconnect handle and the rear pushing handle.
Figure 17 is a perspective view of two grooms dumping a wheelbarrow cart full of used straw into a dumpster or compost bin wherein the stable wheelbarrow cart is fitted with a quick-disconnect handle.
Figure 18 is a perspective view of a person grasping a panel of plywood vertically using a quick-disconnect handle of Figure 14.
Figure 19 is a perspective view of a person moving a tabletop horizontally using a quick-disconnect handle of Figure 14. DETAILED DESCRIPTION OF THE INVENTION
Figure 1 shows cart 1 with bin 3, rear pushing handle 5, wheels 7 and auxiliary handle 10. While Figure 1 shows a two wheeled cart 1, it is noted that the present invention is also applicable to a single wheeled wheelbarrow with a handle assembly including a pair of rear-extending handle posts, such as shown in Figure 5 or Figure 5a.
Figure 2 shows the parts of handle assembly 10 and the method of attachment. The crossection view of Figure 3 further describes handle 10 assembly.
Figure 3 is a crossectional view taken along lines "3-3" of Figure 1.
In Figures 2 and 3, attachment plate 12 holds the ends of handle 14 and has bosses 18 which fit inside holes 21 in bin 3. The attachment is completed with screws 20 and washers 22, wherein screws 20 engage threaded blind holes in bosses 18. Handle 14 with resilient handle grip 16 is held against the end of bin 3, when not in use, by friction within the inside surfaces of channel 24, which slightly deforms resilient handle grip material 16.
Figure 4 shows the details of a second embodiment accessory front handle assembly. Frame 26 is rigidly attached to fixed ratchet member 30 while handle 28 is rigidly attached (as by welding, for example) to rotatable ratchet 32. Screw knob 34 forces the ratchet faces together to lock the position of handle 28 in any desired position as indicated by the two phantom views. This is ergonomically superior to the assembly of handle 10, as it affords rigidity to a handle 28 during the lifting and dumping procedure. The ratchet assembly 32 includes a fixed ratchet member 30 mounted on one of said forwardly extending members 28 of the bracket, a mating, rotatable ratchet member 32 attached to the corresponding end arm of the adjustable handle, and a screw knob 34 to separate the fixed and rotatable ratchet members 30, 32 temporarily, to allow the resilient grip 16 to be positioned at any one of multiple positions between the parked position and the fully deployed position, whereby the elongated resilient grip 16 is fixed in whatever position it is held, by the matching and fully mated ratchet members 30, 32.
Figure 5 shows handle assembly 10 attached to the end of wheelbarrow 40 with curved tub 41, frame 44 and single wheel 42.
Figure 5 a shows an alternate embodiment for a wheelbarrow with a curved bull nosed front end, where flat plate bracket 12 with handle 10 held in place with a flexible adapter 12a, having a curved surface 12b, adapted to conform to the curved bull nosed front end of the wheelbarrow.
Figure 6 shows the third embodiment of accessory handle in which two separate short handles 46 substitute for a single centrally located handle. The separation of handles 46 afford good torque transfer to bin 3 for dumping debris 9 into a dumpster or compost bin.
Figure 7 illustrates the equal height of the rear pushing handle 5 and the grip 16 of handle assembly 10 when handle is at deployed height. It is this equal height at the level close to the top of bin 3 that is most useful for lifting and dumping.
Figure 8 shows two persons 50, 52 rotating bin 3 in the direction of the arrow via equal height handles 5 and 10 to dump debris 9 into raised collection receptacle 53, such as a dumpster or compost bin. Figure 9 shows an alternate embodiment for a stable cart with straw trapper accessory 60 attached and in use with fabric panel 68, deployed over the open top of the bin trapping straw 9 inside.
Figure 10 shows the parts of straw trapper 60 including storage chamber 70, backing plate 66, front clamp extensions 62, clamping knobs 64, rewind crank knob 72, fabric panel 68, locking loops 74, far edge retainers 78 and loop knobs 76. In the illustrated embodiment, knob 72 is used to rewind fabric panel 68 manually back into storage chamber 70, having a roller therein, to expose the bin interior. The spaced far edge retainers 78 are mounted on an outside surface of the second side wall. Each far edge retainer 78 has an extended loop knob 76 to engage the loops 74 mounted on the free edge of the fabric panel 68, whereby, when the fabric panel 68 is pulled off of the roller and is extended over the open top of the bin 3, the loops 74 are placed over the loop knobs 76, so that the fabric panel 68 remains in place to retain the straw 9 within the bin 3 while the bin 3 is stored or transported, wherein the fabric panel 68 is rewound onto the roller, when the loops 74 are released from the loop knobs 76 and the rewind crank knob 72 is rotated.
In an alternate embodiment (not shown) no rewind crank knob 72 is used since an internal spring rewinds fabric 68 when loops 74 are released from engagement with loop knobs 76.
Figure 11 shows the side of the stable cart where the straw trapper accessory 60 is attached. Backing plate 66 (not visible) lies against the inside of bin 3 while clamp extensions 62 permit clamping to the outside surface of bin 3 under the top lip of bin 3.
Figure 11 also illustrates the equal height of the rear pushing handle 5 and the grip 16 of handle assembly 10 when handle is at its deployed height. It is this equal height at the level close to the top of bin 3 that is most useful for lifting and dumping. This height also enables the users, such as two grooms 50, 52 at a racetrack, to have the respective handles 5 and 110 at equal chest height when the biceps are strongest at an ergonomic right angle, when tipping the contents 9 of the wheelbarrow cart 10 into a dumpster 53. If the handles 5 and 110 were much higher than the top of the bin 3 of the wheelbarrow cart, then the users would have to uncomfortably extend the users' arms over the users' respective head areas, so that the top of the bin 3 was at the height level of the top of the raised collection receptacle, such as dumpster or compost bin 53. By equalizing the height of the front and rear handles, this adds to user safety, because it enables the two lifters to lift the wheelbarrow / cart 10 under equal lifting forces, thereby preventing one or both of the lifters from slipping and falling during the lifting process.
Figure 12 shows grooms 50 and 52 dumping the contents of a stable cart bin 3 into a raised collection receptacle, such as dumpster or compost bin 53. Groom 50 is shown grasping rear handle 5 of the wheelbarrow / cart, while groom 52 is using front handle assembly 10. In an equivalent noted, where fabric panel 68 has been wound up inside storage chamber 70 mounted to a stable wheelbarrow (instead of a two wheel cart) with the accessory handle mounted on the front of the tub, groom 50 would be grasping the ends of two separate pushing handles as commonly used on wheelbarrows. Instead of dumpster 53, the cart can be used to transport yard debris into the raised walled confines of a compost container.
Figure 13 shows a debris hauling cart 100 with a bin 3, rear conventional pushing handle 5 and wheels 7. A quick-disconnect handle 102 is shown attached at the front top of bin 3.
Figure 14 shows various parts of the accessory handle 102 of Figure 3. This first embodiment has one modified quick connect disconnect Irwin type clamp 104 at each end of handle rod 112. Handle rod 112 is optionally in two parts attached with a twist-lock sleeve 114 at its center to facilitate length adjustment. Each clamp 104 has one elongated operating handle 106 with a rod attachment at its distal end. Quick release levers 108 release clamping pads 110 from the bin 3 of the wheelbarrow/cart.
Figure 15 shows the modifications for a further embodiment 120 which permits height adjustment by virtue of the right angle rod extension 126 which can be rotated up or down. Note that elongated handle of each of the clamps 122 ends in a fixed ratchet member. A matching rotatable ratchet member is attached to each end of handle 126; this can be locked in any position of rotation via locking knob 128.
Figure 16 illustrates the matching heights of quick-disconnect handle 102 and molded rear handle 5 for ease in lifting and dumping.
Figure 17 shows groom 50 grasping the rear handle 5 while groom 52 grasps handle 102 as used straw is dumped into dumpster 53.
Figure 18 shows workman 50 lifting a plywood panel 130 as grasped vertically by quick-disconnect handle 102.
Figure 19 illustrates the use of handle 102 in grasping and moving a tabletop 134 horizontally. Other flat panels can be grasped and moved, such as drywall panels doors and other planar substrates. In the foregoing description, certain terms and visual depictions are used to illustrate the preferred embodiment. However, no unnecessary limitations are to be construed by the terms used or illustrations depicted, beyond what is shown in the prior art, since the terms and illustrations are exemplary only, and are not meant to limit the scope of the present invention.
It is further known that other modifications may be made to the present invention, without departing the scope of the invention, as noted in the appended Claims.

Claims

WE CLAIM:
1. A dual handled wheelbarrow / cart comprising:
a bin having a pair of front and rear upwardly and outwardly extending walls, a pair of side walls, and a closed bottom, said bin having an open top for receiving and discharging debris;
a wheel assembly engaged with a bottom of said bin for supporting and
transporting said bin;
a fixed pushing handle mounted on an outside of said rear wall adjacent a top edge thereof;
an auxiliary handle mounted on a bracket mounted on an outside of said front wall, said bracket comprising a flat plate portion flush on and attached to said front wall of said bin, and having a pair of forwardly extending members at opposite side ends of said flat plate portion, said bracket being adjacent a top end of said front wall;
said fixed pushing handle and said auxiliary handle each having one equal height above the ground when said handles are at a deployed lifting height, whereby said front and rear handles mounted on front and rear walls, respectively, of said bin, allow two users working together to unload the debris from said bin over a side wall of said bin into a raised collection receptacle.
2. The dual handled wheelbarrow / cart of Claim 1 further comprising a debris trapper for enclosing debris in said bin for shipment and storage, said debris trapper comprising a dispenser of a flexible panel to cover said open top of said bin, said dispenser mounted on a first of said side walls, and means mounted on a second, opposite side wall for engaging a free end of said flexible panel.
3. The dual handled liftable wheelbarrow / cart as in Claim 1, wherein said auxiliary handle is an adjustable handle with an elongated resilient grip having end arms swiveling about and mounted on said forwardly extending members of said bracket, said handle being rotatable between a parked position flush downwardly against the outside of said front wall, and an upwardly extending deployed position, with said resilient grip above the open top of said bin; a channel mounted on said flat plate portion of said bracket to receive and retain by friction within inside surfaces of said channel said resilient grip of said handle, when said handle is in the parked position, whereby said bin can be manipulated to receive and discharge debris with selective use of either or both of said fixed pushing handle and said auxiliary handle,
whereby said fixed and auxiliary handles mounted on rear and front walls, respectively, of said bin allow two users working together to unload debris from said bin over a side wall of said bin..
4. The dual handled wheelbarrow / cart of Claim 1 in which said front handle is molded.
5. The dual handled wheelbarrow / cart of Claim 1 in which said bracket is attached to said front wall of said wheelbarrow / cart by the use of bosses extending through said front wall and attached by screws to said front wall.
6. The dual handled wheelbarrow / cart of Claim 5 having a ratchet assembly comprising a fixed ratchet member mounted on one of said forwardly extending members of said bracket, a mating, rotatable ratchet member attached to the corresponding end arm of said adjustable handle, and a screw knob to separate said fixed and rotatable ratchet members temporarily to allow said resilient grip to be positioned at any one of multiple positions between the parked position and the fully deployed position, whereby the elongated resilient grip is fixed in whatever position it is held by said matching and fully mated ratchet members.
7. The dual handled wheelbarrow / cart of Claim 1 in which said auxiliary handle comprises multiple fixed handles which are mounted on said front wall.
8. The dual handled wheelbarrow / cart of Claim 2 in which said debris trapper comprises a reliable cover provided from a dispenser; said dispenser comprises a backing plate mounted on the outside of said first side wall, a roller mounted for rotation on said backing plate, a flexible panel rolled onto said roller, and a crank at one end of said roller to wind up said flexible panel on said roller.
9. The dual handled wheelbarrow / cart of Claim 8 in which said dispenser further comprises spaced far edge retainers mounted on an outside surface of said second side wall, each far edge retainer having an extended loop knob to engage loops mounted on the free edge of said flexible panel, whereby when said flexible panel is pulled off said roller and extended over said open top of said bin, and said loops are placed over said loop knobs, said flexible panel remains in place to retain said debris within said bin, while said bin is stored or transported, said flexible panel being rewound onto said roller when said loops are released from said loop knobs and said rewind crank knob is rotated.
10. The dual handled wheelbarrow / cart of Claim 9 in which each said far edge retainer comprises a first leg attached to an outside surface of said second side wall, an outwardly extending portion, a downwardly extending second leg spaced from said first leg, and said loop knob extending outwardly from said second leg.
11. The dual handled wheelbarrow / cart as in Claim 1 , wherein said raised collection receptacle is a dumpster.
12. The dual handled wheelbarrow / cart as in Claim 1 , wherein said raised collection receptacle is a compost bin.
13. The wheelbarrow of Claim 1, wherein the front end of the wheelbarrow / cart has a curved bull nosed front end, wherein further said flat plate bracket holding said front handle is held in place with a flexible adapter having a curved surface adapted to conform to said curved bull nosed front end of the wheelbarrow.
14. An auxiliary removable attachment handle comprising an elongated rod, said elongated rod includes a pair of quick-disconnect clamps at opposite ends thereof;
each said quick-disconnect clamp further comprises one elongated operating handle having a rod attachment at a distal end thereof engageable with a respective end of said elongated handle rod; and,
each said quick-disconnect clamp having quick release levers releasing respective clamping pads from a flat panel surface upon manual squeezing thereof.
15. The auxiliary removable attachment handle as in Claim 14, wherein said removable elongated hand rod further comprises a height adjustment means, said means including a rotatable angled handle rod extension member; said rotatable handle rod extension member rotatable up or down;
each said clamp further having a further elongated clamp handle with an end being a fixed ratchet member matching with a matching rotatable ratchet member attached to each end of said rotatable angled rod extension member handle lockable in any position of rotation via a locking knob.
16. The auxiliary removable attachment handle as in Claim 14, wherein said flat surface panel is a building construction panel graspable vertically or horizontally or any angle therebetween by said auxiliary removable attachment handle.
17. The auxiliary removable attachment handle as in Claim 14, wherein said planar object is a plywood panel.
18. The auxiliary removable attachment handle as in Claim 14, wherein said planar object is a drywall panel.
19. The auxiliary removable attachment handle as in Claim 14, wherein said planar object is a door.
20. The auxiliary removable attachment handle as in Claim 14, wherein said planar object is a table-top.
21. The auxiliary removable attachment handle as in Claim 14 further comprising a twist lock length adjustable lock to facilitate length adjustment of said elongated rod.
22. A combination wheelbarrow / cart and quick-disconnect front handle of the wheelbarrow / cart comprising:
a wheelbarrow / cart having a conventional rear pushing handle assembly, a bin and a frame having at least one wheel;
a quick-disconnect handle, said quick-disconnect handle having a pair of quick connect/disconnect clamps at opposite ends of an elongated handle rod;
each said quick-disconnect handle having one elongated operating handle with a rod attachment at a respective distal end thereof;
each said quick-disconnect handle having a respective quick release levers releasing respective clamping pads from a surface of said bin upon squeezing of said lever, wherein said elongated handle rod provides a second lifting handle at a front end of said wheelbarrow opposite to said conventional pushing handle assembly at said rear of said wheelbarrow.
23. The combination wheelbarrow / cart and quick-disconnect front handle as in Claim 22, wherein said handle rod having a means for height adjustment of said handle rod, said means comprising each respective end of said handle rod having an angled rod extension rotatable up or down;
each said quick-disconnect clamp having an elongated clamp handle ending in a fixed ratchet member engageable with a matching rotatable ratchet member attached to each respective opposite end of each said handle rod extension; said rotatable ratchet member being lockable in any position of rotation via a locking knob.
24. The combination wheelbarrow / cart of Claim 22, wherein said raised collection receptacle is a dumpster.
25. The combination wheelbarrow / cart of Claim 22, wherein said raised collection receptacle is a compost container.
26. The combination wheelbarrow / cart and quick-disconnect front handle of Claim 22, wherein said rear pushing handle and said quick-disconnect handle are at an equal height to facilitate dumping of debris from said bin.
PCT/US2011/001958 2011-10-14 2011-12-01 Cart accessory handle for lifting and dumping of wheelbarrow cart WO2013055306A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/252,165 US20140234069A1 (en) 2011-10-14 2014-04-14 Quick-disconnect handle for lifting and carrying large flat planar objects

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US13/317,335 2011-10-14
US13/317,337 US8714570B2 (en) 2011-10-14 2011-10-14 Quick-disconnect handle for lifting and dumping of wheelbarrow cart
US13/317,336 2011-10-14
US13/317,335 US8684374B2 (en) 2011-10-14 2011-10-14 Cart accessory handle for lifting and dumping
US13/317,337 2011-10-14
US13/317,336 US8636289B2 (en) 2011-10-14 2011-10-14 Straw trapper for wheelbarrow

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8636289B2 (en) 2011-10-14 2014-01-28 John Skijus Straw trapper for wheelbarrow
CN109368274A (en) * 2018-10-19 2019-02-22 安徽科技学院 A kind of construction site brick conveying device and not damaged delivery method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894753A (en) * 1974-02-05 1975-07-15 John C Ickes Firewood cart
US5461755A (en) * 1993-11-23 1995-10-31 Hardigg Industries, Inc. Lightweight handle
US5957352A (en) * 1996-07-05 1999-09-28 Gares; Jean-Michel Tool holding device designed to be attached to a wheelbarrow
US6098492A (en) * 1998-07-13 2000-08-08 Juchniewicz; Gregory J Device for extending the handle of a wheeled cart
US6139029A (en) * 1997-05-29 2000-10-31 Shaw; James H. Portable utility cart

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894753A (en) * 1974-02-05 1975-07-15 John C Ickes Firewood cart
US5461755A (en) * 1993-11-23 1995-10-31 Hardigg Industries, Inc. Lightweight handle
US5957352A (en) * 1996-07-05 1999-09-28 Gares; Jean-Michel Tool holding device designed to be attached to a wheelbarrow
US6139029A (en) * 1997-05-29 2000-10-31 Shaw; James H. Portable utility cart
US6098492A (en) * 1998-07-13 2000-08-08 Juchniewicz; Gregory J Device for extending the handle of a wheeled cart

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8636289B2 (en) 2011-10-14 2014-01-28 John Skijus Straw trapper for wheelbarrow
CN109368274A (en) * 2018-10-19 2019-02-22 安徽科技学院 A kind of construction site brick conveying device and not damaged delivery method
CN109368274B (en) * 2018-10-19 2023-10-27 安徽科技学院 Brick conveying device for construction site and nondestructive conveying method

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