EXTRUDED BOX CONCRETE FLOAT BLADE
An implement for working uncured concrete includes a removable manipulator and a tool for engaging the surface of uncured concrete. The implement is configured to permit manipulators to be interchanged such that the appropriate manipulate or may be used to perform a particular task during the concrete curing process.
This application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Application Ser. No. 62/268,121, filed Dec. 16, 2015, which is incorporated herein by reference in its entirety.
TECHNICAL FIELDThe present disclosure relates to the devices for finishing the surface of concrete. More specifically, the present disclosure relates to the structure of the finishing tool of an implement for working flat concrete to establish the finish of the surface of the concrete.
BACKGROUNDThe use of a vibratory apparatus to impart vibration to a so-called bull float is disclosed in U.S. Pat. No. 6,923,595. Additional structures for imparting vibration to concrete working tools is disclosed in U.S. Pat. Nos. 5,857,803 and 5,375,942.
Working of large areas of flat concrete while the concrete is still wet or uncured includes placing the wet concrete, striking off or “screeding” the concrete to a particular elevation, and then working of the surface of the concrete to establish the finish of the concrete once the concrete cures. Often times, part of the finishing step includes working the surface of the uncured concrete with a device known in the art as a “bull float.” The bull float may be moved over the concrete manually without any additional mechanical energy being added, or the bull float may have vibration added to provide additional working of the concrete surface.
The bull float includes an elongated tool with a generally planer lower surface that is moved over the surface of the concrete to apply a finish. The lower surface may have different surface finishes to provide different textures in the surface of the concrete. However, the elongate structure experiences bending forces during use, especially when vibration is apply. The bending forces tend to work the elongate structure to cause the tool to bend and take a set. When this occurs, the tool is unsuitable for use as it will not properly finish the concrete surface.
SUMMARYThe present disclosure includes one or more of the features recited in the appended claims and/or the following features which, alone or in any combination, may comprise patentable subject matter.
According to the present disclosure, various embodiments of enclosed tools configured to be used in bull floating concrete are disclosed.
In one aspect of the present disclosure, an implement for working the surface of uncured concrete comprises a manipulator, a tool and a quick release support structure. The manipulator is configured to permit a user to manually move the implement over the surface of the incurred concrete. The tool includes a concrete engaging surface, a plurality of elongate channels, and the channels being separated by at least one relatively thin wall that extends from a lower wall to an upper wall. The quick release support structure is secured to the tool, the manipulator being releasably secured to the quick release support structure.
In some embodiments, the manipulator comprises a handle having a shaft, a collar supported on the shaft and slidable relative to the shaft, a pair of struts pivotably coupled to the collar at a first end of each of the struts, a bracket, each of the struts pivotably coupled to the bracket at a second end of each strut, the bracket being releasably secured to the quick release support structure.
In some embodiments, the quick release support structure comprises a pair of spaced apart supports, each supports extending upwardly from a top surface of the tool.
In some embodiments, the quick release support structure comprises a manually manipulable clamp screw engaged with each support of the quick release support structure, the bracket being clamped to each of the supports by respective manually manipulable clamp screw.
In some embodiments, the bracket includes a respective notches that overlie the shaft of the respective clamp screws to secure the bracket from lateral movement relative to the he supports.
In some embodiments, the tool comprises at least three channels that extend along the length of the tool. In some embodiments, the tool includes at least two outboard channels. In some embodiments, each outboard channel has a first sidewall extending upwardly from the lower wall and defining an edge of the tool. In some embodiments, each outboard channel is further defined by an inner wall that extends from the lower wall to the upper wall, the inner wall being shorter than the first sidewall, and each outboard channel being defined by an incline wall that extends from the first sidewall to the inner wall of each respective chamber.
In some embodiments, each support of the quick release support structure is secured to the tool by a fastener that extends through the upper wall of the tool and into a channel of the tool.
In some embodiments, the fastener that secures the support of the quick release support structure extends through a spacer and threads into a plate positioned in the channel.
In some embodiments, each support of the quick release support structure is secured to the tool by a fastener that extends through the upper wall of the tool and into a channel of the tool.
In some embodiments, the fastener that secures the support of the quick release support structure extends through a spacer and threads into a plate positioned in the channel.
In some embodiments, the implement further comprises a vibrator unit configured to transfer vibration to the tool.
In some embodiments, the vibrator unit is configured to be supported by the supports of the quick release support structure.
In some embodiments, a manually manipulable clamp screw simultaneously secures the bracket and the vibrator unit to a support of the quick release support structure.
In some embodiments, the vibrator unit comprises a frictional throttle.
In some embodiments, the manipulator comprises a handle that is independent from the vibrator unit, the orientation of the handle relative to the tool being adjustable independent of the vibrator unit.
In some embodiments, the struts move with the handle as it is adjusted.
According to another aspect of the present disclosure, a tool configured to be used as a bull float comprises a plurality of internal channels and first and second flat sides.
In some embodiments, the tool may be reversible to use a second side of the tool when the first side is damaged or worn.
According to yet another aspect of the present disclosure, a tool configured to be used to work uncured concrete has a plurality of thin walls that separate elongate channels.
In some embodiments, the walls are expanded in certain areas to receive a fastener to secure a manipulator to the tool.
In some embodiments, certain portions of the tool have increased thickness to accommodate wear of the tool during use without exposing the elongate channels along a longitudinal length.
Additional features, which alone or in combination with any other feature(s), such as those listed above and/or those listed in the claims, can comprise patentable subject matter and will become apparent to those skilled in the art upon consideration of the following detailed description of various embodiments exemplifying the best mode of carrying out the embodiments as presently perceived.
The detailed description particularly refers to the accompanying figures in which:
A prior art elongated tool 10 for use to finish the surface of uncured concrete is shown in
After placing and screeding the concrete to a desired flatness, the secondary practice is to do what is called “bull floating” the concrete to smooth out the ripples left behind during the screeding process. This practice improves the flatness and brings cement to the surface for further finishing. The tool 10 is used to accomplish this bull floating.
As the cement hardens the concrete will crust over and prevents the bleed water from leaving. The tool 10 is used again and again to break the crust until the concrete is strong enough to support labor and or equipment. The ribs 14, 16, 24, and 26 are also used for accessory attachments for the handle connections. The lengths can vary from approximately eight inches wide and two to ten feet long as indicated by arrow 40. As the length 40 increases, the potential for bowing or bending of the tool increases. This bending of the tool 10 is detrimental to the finishing process and will leave small valleys or depressions on the surface of the concrete. If the tool 10 is straight, as the concrete hardens, weight can be added and the finisher will shake the handles in an effort to continue breaking the surface.
Referring now to
Referring to
A profile of a second embodiment of a tool 210 is shown in
A third embodiment of a tool 310 is shown in
In yet another embodiment shown in
As shown in
Referring now to
The manipulator 500 includes a bracket 144 that permits the attitude of the cup 162 to be adjusted about an axis 522 to change the relative angle between a handle 142 relative to the tool 410 similar to the arrangement of the embodiment of
Referring to
The orientation of the handle 142 relative to the tool 410 is adjustable by releasing the clamp 164 and adjusting the position of the handle 142. As the handle 142 is adjusted relative to the tool 410, the struts 502 and 504 rotate about the axis 512. This action causes the struts 502 and 504 to act on the collar 514 with the struts 502 and 504 rotating relative to the collar 514 about the axis 516 and urge the collar 514 to move along the shaft 143 to compensate for the change in orientation of the struts 502 and 504 relative to the tool 410.
A user may apply pressure to the handle 142 in the direction of arrow 550 or in the opposite direction 552 shown in
In another embodiment shown in
The vertical spacing 660 of the threaded hole 638 is closer to the upper wall 620 of the tool 610 than an vertical spacing 662 of the threaded hole 574 of the support 508 in
The tool 610 has a lower wall 612 and a pair of vertical walls 614 and 616 which cooperate with the lower wall 612 and upper wall 620 to form a channel 624 that extends along a longitudinal length of the tool 610. An inclined wall 618 interconnect the lower wall 612 and upper wall 620 to form a channel 626 that extends along the longitudinal length of the tool 610 and has a triangular cross-section. The tool 610 has a nose 630 on a forward side of the tool 610 and nose 628 on the rear side of the tool 610. These noses 628 and 630 may be used to break the curing concrete as discussed above.
The reduced vertical spacing 660 of the implement 602 permits a bracket 670, shown in
Referring now to
The vibrator unit 712 includes a power source 730 which is operable to rotate an eccentric in a vibrator head 732 as is known in the art. A clamp 738 clamps the vibrator 734 to a frame member 736. Frame member 736 is secured to the supports 714 and 716 by the clamp screws 722 and 726. Vibration from the vibrator head 732 is transferred to the frame member 736 through the supports 714, 716 to the tool 410 to impart vibration to the tool 410 and thereby work the uncured concrete. The vibrator unit 712 includes a frame 740 which is clamped to the frame member 736 by a grip 742 that is secured by a clamp screw 744. While not shown in the figures, a similar grip and clamp screw are positioned on the opposite side of the frame 740 above the support 716. The vibrator unit 712 includes a handle bar 750 with a grip 752. The handle bar spans the width of the frame 740 with the grip positioned above the power source 730. The frame 740 includes a second grip 754 positioned at a top end of the frame 740. To manipulate the vibrator unit 712, a user grasps grips 752 and seven and 54 which are positioned to provide balance when manipulating the vibrator unit 712 to allow user to lift the vibrator unit 712 onto or off of the supports 714, 716. The vibrator unit 712 includes a frictional throttle (not shown) which a user may adjust to establish the speed of the power source 730, with the frictional throttle maintaining the speed while user manipulates the power float 710 with the handle 142.
Referring now to
Referring to
It should also be understood that each tool 110, 210, 310, 410, and 610 may be used in combination with any version of manipulator disclosed herein. The various tools 110, 210, 310, 410, and 610 and manipulators 141, 500, 718 are interchangeable using the various structures disclosed herein. For example, using the supports 714 and 716 with any of the 110, 210, 310, 410, and 610 allows any of the manipulators 141, 500, 178 to be used, as well as a manipulator utilizing the elevator bracket 780. When one of the tools 110, 210, 310, 410, and 610 is used with the supports 714 and 716, and bracket 720, the vibration unit 712 may be mounted to the structure to impart vibration to the particular tool 110, 210, 310, 410, and 610.
Although this disclosure refers to specific embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the subject matter set forth in the accompanying claims.
Claims
1. An implement for working the surface of uncured concrete comprising
- a manipulator configured to permit a user to manually move the implement over the surface of the incurred concrete,
- a tool having a concrete engaging surface, the tool including a plurality of elongate channels, the channels being separated by at least one relatively thin wall that extends from a lower wall to an upper wall, and
- a quick release support structure secured to the tool, the manipulator being releasably secured to the quick release support structure.
2. The implement of claim 1, wherein the manipulator comprises a handle having a shaft, a collar supported on the shaft and slidable relative to the shaft, a pair of struts pivotably coupled to the collar at a first end of each of the struts, a bracket, each of the struts pivotably coupled to the bracket at a second end of each strut, the bracket being releasably secured to the quick release support structure.
3. The implement of claim 2, wherein the quick release support structure comprises a pair of spaced apart supports, each supports extending upwardly from a top surface of the tool.
4. The implement of claim 3, wherein the quick release support structure comprises a manually manipulable clamp screw engaged with each support of the quick release support structure, the bracket being clamped to each of the supports by respective manually manipulable clamp screw.
5. The implement of claim 4, wherein the bracket includes respective notches that overlie the shaft of the respective clamp screws to secure the bracket from lateral movement relative to the he supports.
6. The implement of claim 5, wherein the tool comprises at least three channels that extend along the length of the tool, wherein the tool includes at least two outboard channels, each outboard channel having a first sidewall extending upwardly from the lower wall and defining an edge of the tool, and each outboard channel being defined by an inner wall that extends from the lower wall to the upper wall, the inner wall being color than the first sidewall, and each outboard channel being defined by an incline wall that extends from the first sidewall to the inner wall of each respective chamber.
7. The implement of claim 6, wherein each support of the quick release support structure is secured to the tool by a fastener that extends through the upper wall of the tool and into a channel of the tool.
8. The implement of claim 7, wherein the fastener that secures the support of the quick release support structure extends through a spacer and threads into a plate positioned in the channel.
9. The implement of claim 3, wherein each support of the quick release support structure is secured to the tool by a fastener that extends through the upper wall of the tool and into a channel of the tool.
10. The implement of claim 9, wherein the fastener that secures the support of the quick release support structure extends through a spacer and threads into a plate positioned in the channel.
11. The implement of claim 10, wherein the implement further comprises a vibrator unit configured to transfer vibration to the tool.
12. The implement of claim 11, wherein the vibrator unit is configured to be supported by the supports of the quick release support structure.
13. The implement of claim 12, wherein a manually manipulable clamp screw simultaneously secures the bracket and the vibrator unit to a support of the quick release support structure.
14. The implement of claim 13, wherein the vibrator unit comprises a frictional throttle.
15. The implement of claim 14, wherein the manipulator comprises a handle that is independent from the vibrator unit, the orientation of the handle relative to the tool being adjustable independent of the vibrator unit.
16. The implement of claim 15, wherein the struts move with the handle as it is adjusted.
17. The implement of claim 1, wherein the implement further comprises a vibrator unit configured to transfer vibration to the tool.
18. The implement of claim 14, wherein the manipulator comprises a handle that is independent from the vibrator unit, the orientation of the handle relative to the tool being adjustable independent of the vibrator unit.
19. The implement of claim 18, wherein the quick release support structure comprises a pair of spaced apart supports, each supports extending upwardly from a top surface of the tool.
20. The implement of claim 19, wherein the vibrator unit is configured to be supported by the supports of the quick release support structure, and wherein a manually manipulable clamp screw simultaneously secures the bracket and the vibrator unit to a support of the quick release support structure.
Type: Application
Filed: Dec 16, 2016
Publication Date: Jun 22, 2017
Inventor: Joseph W. LINDLEY (Paducah, KY)
Application Number: 15/382,032