TROWEL
A trowel includes a blade and a handle that is moveably coupled to blade. Further, the trowel includes a cam mechanism that is supported by one of the blade and the handle and is operable to engage the other of the blade and the handle. The cam mechanism is actuatable to change a position of the handle relative to the blade.
This application claims priority to U.S. Provisional Application No. 61/907,636, filed Nov. 22, 2013, the entire contents of which are incorporated herein by reference.
BACKGROUNDThe present invention relates to hand tools. In particular, the present invention related to trowels.
Trowels are hand tools that are typically used for smoothing, spreading or digging a material. For example, trowels are frequently used to spread, smooth, or extract cement, plaster, mortar or dirt for construction or maintenance projects such as tiling, bricklaying, or gardening.
SUMMARY OF THE INVENTIONIn one embodiment, the invention provides a trowel including a blade and a handle that is moveably coupled to the blade. Further, the trowel includes a cam mechanism supported by one of the blade and the handle and that is operable to engage the other of the blade and the handle. The cam mechanism is actuatable to change a position of the handle relative to the blade.
In another embodiment the invention provides a trowel including a blade, a handle that is slidably coupled to the blade, and a cam mechanism coupled to the handle and including a cam surface. The cam mechanism is moveable between a first position, in which the cam surface engages a portion of the blade to fix the handle relative to the blade, and a second position, in which the handle is moveable relative to the blade.
In another embodiment the invention provides a handle for a trowel including a blade. The handle includes a body that is configured to couple to the blade and a cam mechanism coupled to the body and including a cam surface. The cam mechanism is actuateable to change an amount of force the cam surface exerts on the blade.
Other aspects of the invention will become apparent by consideration of the detailed description and accompanying drawings.
Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways.
Referring back to
Further with respect to
The body 34 of the handle 30 defines a recess 46 that extends through the body 34 and is parallel to the longitudinal axis B. The recess 46 is defined by a first side wall 50 and a second side wall 54 of the body 34, which are opposite each other. The side walls 50, 54 extend toward the blade 14 to straddle the spine 18. Each of the first side wall 50 and the second side wall 54 includes a substantially arcuately shaped projection or rails 58, 62. The projections 58, 62 are sized and shaped to be received within the first track 22 and the second track 26, respectively, of the spine 18. The projections 58, 62 and the tracks 22, 26 facilitate sliding the handle 30 along the spine 18 to adjust or change the position of the handle 30 relative to the blade 14.
In the embodiment of
In the illustrated embodiment, the clamp member 66 is at least partially received within the handle 30. The clamp member 66 is secured to a block 72, which is positioned and secured within the recess 46 of the body 34 of the handle 30. The clamp member 66 is pivotally coupled to the block 72 for movement relative to the handle 30. The illustrated clamp member 66 includes an engagement surface 82 and a tapered surface 84. The engagement and the tapered surfaces 82, 84 are formed on opposite sides of the clamp member 66. The engagement surface 82 is disposed adjacent the spine 18 (i.e., facing the spine 18) when the handle 30 is coupled thereto. As such, the engagement surface 82 can selectively engage the spine 18. The tapered surface 84 is disposed adjacent the cam mechanism 70 (i.e., facing the cam mechanism 70). As such, the tapered surface 84 is engaged by the cam mechanism 70.
A fastener or screw 74 (
The cam mechanism 70 is pivotally coupled to the body 34 of the handle 30 and positioned within the recess 46. The illustrated cam mechanism 70 includes a manual actuator 90 and a cam surface 94. Actuation or movement of the actuator 90 rotates the cam mechanism 70 about an axis C (
The cam mechanism 70 is movable between a first, secured position (
In the embodiment illustrated in
The clamp member 66 may have other configurations than that illustrated in
Regardless of the configuration of the clamp member 66, 66′, however, the function of the clamp member 66, 66′ is the same in both embodiments—that is to assist the cam mechanism 70′ in selectively securing the handle 30, 30′ to the blade 14, 14′.
In addition to the structure of the clamp member 66′, the block 72′ the trowel 10′ of
In the embodiment of
The above-described features may be constructed from the same material or a combination of materials, and any suitable material may be used. For example, in each of the embodiments the bodies 34, 34′, 234 and the projections 38, 38′, 238 of the handles 30, 30′, 230 are constructed from cast aluminum, and the cam mechanisms 70, 70′, 270 are constructed from stainless steel or any other suitable powdered metal. Further, the clamp member 66 is constructed from nylon or the like. Other materials may also or alternatively be used as well and are within the spirit and scope of the invention.
It should be understood that features of either of the two embodiments that are shown and described herein may be included and combined in other or additional embodiments for a trowel.
Various features and advantages of the invention are set forth in the following claims.
Claims
1. A trowel comprising:
- a blade;
- a handle moveably coupled to blade; and
- a cam mechanism supported by one of the blade and the handle and operable to engage the other of the blade and the handle, the cam mechanism being actuatable to change a position of the handle relative to the blade.
2. The trowel of claim 1, wherein the cam mechanism is movable between a first position, in which the handle is fixed relative to the blade, and a second position, in which the handle is moveable relative to the blade.
3. The trowel of claim 1, wherein the cam mechanism includes a manual actuator and a cam surface, the cam surface engaging the other of the blade and the handle, the manual actuator being movable to change an amount of force the cam surface exerts on the other of the blade and the handle.
4. The trowel of claim 1, wherein the blade defines a longitudinal axis, and wherein the cam mechanism is pivotable about an axis that is perpendicular to the longitudinal axis.
5. The trowel of claim 1, wherein the handle includes a clamp member that is positioned adjacent to the blade, the clamp member selectively engaging a portion of the blade to inhibit movement of the handle relative to the blade.
6. The trowel of claim 5, wherein the cam mechanism includes a manual actuator and a cam surface, the cam surface engaging the clamp member, the manual actuator being movable to change an amount of force the cam surface exerts on the clamp member.
7. The trowel of claim 6, wherein the manual actuator is movable between a first position, in which the cam surface exerts a first force on the clamp member to fix the handle relative to the blade, and a second position, in which the cam surface exerts a second force on the clamp member to allow relative movement between the handle and the blade.
8. The trowel of claim 5, wherein the clamp member is adjustable.
9. A trowel comprising:
- a blade;
- a handle slidably coupled to blade; and
- a cam mechanism coupled to the handle and including a cam surface, the cam mechanism moveable between a first position, in which the cam surface engages a portion of the blade to fix the handle relative to the blade, and a second position, in which the handle is moveable relative to the blade.
10. The trowel of claim 9, wherein the cam mechanism includes a manual actuator, the manual actuator movable to move the cam mechanism between the first position and the second position.
11. The trowel of claim 9, wherein in the first position the cam surface exerts a first force on the blade, and in the second position the cam surface exerts a second force on the blade, the second force being less than the first force.
12. The trowel of claim 9, wherein the blade includes a longitudinal axis and a spine extending along the longitudinal axis, the handle being slidingly coupled to the spine.
13. The trowel of claim 12, wherein the handle includes a clamp member that is positioned adjacent to the spine, the cam surface engaging the clamp member, the clamp member selectively engaging a portion of the spine to inhibit movement of the handle relative to the blade.
14. The trowel of claim 13, wherein the cam mechanism includes a manual actuator, the manual actuator being movable to change an amount of force the cam surface exerts on the clamp member.
15. The trowel of claim 13, wherein in the first position the cam surface exerts a first force on the clamp member to fix the handle relative to the spine, and in the second position the cam surface exerts a second force on the clamp member to allow relative movement between the handle and the spine.
16. The trowel of claim 13, wherein the clamp member is adjustable.
17. A handle for a trowel including a blade, the handle comprising:
- a body configured to couple to the blade; and
- a cam mechanism coupled to the body and including a cam surface, the cam mechanism being actuatable to change an amount of force the cam surface exerts on the blade.
18. The handle of claim 17, wherein the blade defines a longitudinal axis, and wherein the cam mechanism is rotatable about an axis that is perpendicular to the longitudinal axis.
19. The handle of claim 17, wherein the cam mechanism includes a manual actuator that is movable to change the amount of force the cam surface exerts on the blade.
20. The handle of claim 19, wherein the manual actuator is movable between a first position, in which the cam surface exerts a first force on the blade to secure the handle relative to the blade, and a second position, in which the cam surface exerts a second force on the blade to allow relative movement between the handle and the blade.
21. The handle of claim 19, further comprising a clamp member coupled to the handle and positioned adjacent to the blade, the cam surface engaging the clamp member, the actuator being movable to change the amount of force the cam surface exerts on the clamp member to change the position of the clamp member relative to the blade.
22. The handle of claim 21, wherein the clamp member is adjustable.
Type: Application
Filed: Nov 19, 2014
Publication Date: May 28, 2015
Inventor: Richard M. Davidian (Pickens, SC)
Application Number: 14/547,612