# Patent

## Title
Electronic drum pedal

## Abstract

A foot pedal for electronic drums includes a lower tab or pedal or other extension for triggering by pressing down, and an upper tab or pedal or other extension for triggering by raising the foot. Also included is the joining of the upper and lower extensions (tab, pedal or other) into a pedal assembly that includes: a hinge or axle or other device which allows the pedal assembly to rotate in an arc; a striking device (stick, rod or other) that is attached to the pedal assembly and hits impact sensitive electronic drum triggering devices (pads, tubes or others); and an elastic device or spring which returns the pedal assembly to the neutral (at-rest) position.

## Background
CROSS-REFERENCE TO RELATED APPLICATIONS
Not applicable.
Statement Regarding Federally Sponsored Research or Development
Not applicable.
Reference to a Microfiche Appendix
Not applicable.
BACKGROUND OF THE INVENTION
This invention relates generally to the field of musical instruments and more specifically to a foot pedal for electronic drums.
Conventional drum pedals are widely used, and require significant mechanical leverage to impact a fairly heavy drum beater with the drum head. If the throw of the beater is shortened or the mass is reduced, there is often not enough sound produced. Electronic drums, on the other hand, detect an impact and amplify the sound after computing the proper note or sound as selected by the musician. Heavy beaters with lots of mass and force are no longer required, yet virtually all commercial electronic drum pedals incorporate the old pedal design because, it is thought, that's what drummers are used to. The problem is that the mass and long throw weight inherent in conventional pedals make them unnecessarily slow and hard to control. For purposes of comparison, FIGS. 9 and 9a show existing drum pedal technology. Drum pedal 101 is hinged at rear 102 and is connected at the front to chain or flexible strap 103. Strap 103 is attached to lever 104 that is suspended on axle 105 using supports 112. Attached to lever 104 is a rod 106 that supports beater head 107. Arm 108 is attached to axle 105 and connected to return spring 109. Spring tension is adjustable using nut 110 that screws onto lower spring attachment bolt 111. Clamp 113 is used to attach the pedal to the shell of bass drum 114 or to the base of an electronic drum pad assembly. When pedal 101 is pressed down as in FIG. 9a, strap or chain 103 is pulled and it in turn rotates lever 104, rod 106 and beater 107 which impacts the surface of a drum or an electronic drum trigger pad 115.
The arc of travel for the typical beater 116 is approximately 9 inches in length. Rod 106 and beater 107 typically weigh from one to three pounds. Pedal 101 plus chain 103 can also weigh in at several pounds. In order to move all of this mass back to the starting point, spring 109 tension is usually relatively high. To counter the force of the spring and to move the pedal rapidly, a relatively large amount of force must be used. A moderate downstroke may require approximately 10 pounds of force, and loud playing may require significantly more. The inherent inertia of existing drum pedals makes rapid successive drum beats impossible, and the long arc of travel of the beater makes timing difficult. Many drummers compensate by adding a second bass drum, or using a remote double bass pedal played with a second foot. In both cases, the hi-hat instrument must be abandoned.
BRIEF SUMMARY OF THE INVENTION
An object of the invention is to provide a pedal whereby raising and lowering the foot can trigger two beats instead of one, thus creating sounds at twice the rate of conventional pedals.
Another object of the invention is to reduce the force required to produce triggering, allowing increased speed and control.
A further object of the invention is to reduce the momentum inherent in the device, which allows a very rapid return to the start position, increasing speed and control.
Yet another object of the invention is to provide a pedal with adjustable return spring tension, and only one moving part.
A further object of the invention is to facilitate very rapid, controlled drum beats with a single foot, retaining the use of the hi-hat instrument.
Another object of the invention is to provide a pedal that allows for multiple sensors in the pads, so that the drum pedal can combine any of the many sounds available in electronic drums, for example; a low conga and cowbell on the downstroke, with a high conga and tambourine on the upstroke.
In accordance with a preferred embodiment of the invention, there is disclosed a foot pedal apparatus for triggering electronic drums comprises impact sensitive electronic drum triggering devices (pads, tubes or other), a lower tab or pedal or other extension for triggering by pressing down, an upper tab or pedal or other extension for triggering by raising the foot, a method of combining the upper and lower extensions (tab, pedal or other) into a pedal assembly, a hinge or axle or other device which allows the pedal assembly to rotate in an arc, support arms or brackets to hold the axle or shaft, a striking device (stick, rod or other) which is attached to the pedal assembly and hits the impact-sensitive electronic drum triggering devices, a footpad to absorb most of the weight of the foot and leg, and an elastic device or spring which returns the pedal assembly to the neutral position.
Other objectives and advantages of the present invention will become apparent from the following descriptions, taken in connection with the accompanying drawings, wherein, by way of illustration and example, an embodiment of the present invention is disclosed.



BRIEF DESCRIPTIONS OF THE DRAWINGS
The drawings constitute a part of this specification and include exemplary embodiments to the invention, which may be embodied in various forms. It is to be understood that in some instances various aspects of the invention may be shown exaggerated or enlarged to facilitate an understanding of the invention.
FIG. 1 is a side view showing an embodiment of the present invention, with impact pad supports removed for clarity.
FIG. 2 is a top view showing an embodiment of the present invention including stands for pad support.
FIG. 3 is a top view showing an embodiment of the present invention including adjustable posts for existing drum tube triggers.
FIG. 4 is a top view showing an embodiment of the present invention including a return spring mounted to an axle.
FIG. 5 is a side view showing an embodiment of the present invention including a spacer to widen the gap between tabs.
FIG. 5a is a side view showing a hinge in use and an adjustable return spring bracket.
FIG. 6 is a top view showing an embodiment of the present invention including a drag device.
FIG. 6a is a left side view showing the drag device of FIG. 6.
FIG. 7 is a rear view showing an embodiment of the present invention showing elements independently attached to a bass drum shell.
FIG. 7a is a rear view showing an embodiment of the present invention showing independently attached pad brackets and arms.
FIG. 8 is a side view showing an embodiment of the present invention showing a special pedal configuration used with a bass drum shell.
FIG. 9 is a side view of a conventional drum pedal at rest.
FIG. 9a is a side view of a conventional drum pedal striking a surface.



DETAILED DESCRIPTION OF THE INVENTION
Detailed descriptions of the preferred embodiment are provided herein. It is to be understood, however, that the present invention may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but rather as a basis for the claims and as a representative basis for teaching one skilled in the art to employ the present invention in virtually any appropriately detailed system, structure or manner.
FIG. 1 shows the essential parts of a foot pedal for electronic drums in accordance with one embodiment of the invention, wherein the parts identical to those shown in FIGS. 2 though 8 are designated by the same reference numerals. In the present embodiment, lower pedal tab, or other type of extension, 21 and upper pedal tab, or other type of extension, 22 are combined with hub body 23a to form the main pedal assembly. This assembly rotates about axle 25 which is suspended by axle stands 26 that are mounted to the pedal base 36. Return spring 27 is attached to the pedal assembly on one end and adjustment screw 28 on the other. Adjustment screw 28 passes through bracket 29 and tension is varied using adjustment nut 30. A striking device 31, such as a stick, rod, tube or other extension, is attached on one end to the pedal assembly and the opposite end rests between two impact sensitive electronic drum triggering devices (pads, tubes or others) 32, 33. As lower pedal tab 21 is pressed down, striking device 31 hits downstroke triggering device 32. As the foot is lifted and the upper pedal tab is moved upward, striking device 31 hits and triggers upstroke triggering device 33.
The arc of travel 34 between striking device 31 and either pad 32, 33 is approximately 1.5 inches. If a light wooden rod or aluminum tube 31 is used, the force required for playing the pedal apparatus is measured in ounces, rather than pounds. This allows for very light return spring 27 tension, while the pedal still returns to the neutral position almost immediately. Also, adding upstroke pedal 22 produces twice the number of beats per foot movement, effectively doubling the speed of an already very fast pedal.
One problem with a pedal that is this light, fast and sensitive is the natural weight of a drummer's foot, which cannot be rested on the lower tab, or a sound will be produced. The solution to this problem lies in the addition of fixed footpad 35. Footpad 35 is used to absorb most of the weight and downward force of the foot and leg.
The pedal is played by pushing the ball of the foot upon footpad 35, and tapping lower pedal tab 21 at the same time with the bottom of the toes. A very light lifting of the toes will raise upper pedal tab 22 and subsequently trigger upstroke pad or tube 33. Note that both pedal tabs 21, 22 have important bends that conform to the foot and optimize the mechanical response of the apparatus to foot movement.
FIG. 2 shows the top view of one embodiment of the invention with some added features. In order to prevent the base of drum pedal 36 from sliding during play, rope 37 is attached to one leg of a drummer's stool or seat 38. The ends of the rope are cleated to the device using jam cleats 39, 40. The rope ends can also be tied to the drum pedal using brackets 40a or similar devices. The actual rope attachment method will vary depending upon the style of seat or throne used. This feature allows the drummer to vary his distance from and the angle relative to the apparatus. A non-skid surface can also be applied to the bottom of base 36.
As a means to adjust the position of the triggering pads, effectively modifying the stroke length (arc of travel from at-rest to impact) of striking device 31, triggering pads 32, 33 are suspended by angle brackets 41–44. Each pad can be moved relative to striking device 31 by loosening adjustment knobs 45–48, sliding the brackets along cutout tracks 49–52, and re-tightening knobs 45–48. In this configuration, fixed shaft 25 is supported by stands or brackets 26L, 26R and pedal assembly 23 rotates around the stationary shaft using optional bearings 53L, 53R.
FIG. 3 is another modified embodiment, utilizing existing commercial drum trigger tubes (“Nimrods” or similar). In this case, trigger tubes 32, 33 are mounted on vertical rods 54, 55 which are attached to adjustment plates 56, 57. The height of the triggering devices as well as the angle can be altered by using set screws 58, 59. The striking device 31 does not have to hit trigger tubes 32, 33 at exactly 90 degrees. The attachment plates 56, 57 are further adjustable using cutout tracks 60, 61 and adjustment knobs 62, 63. There are dozens of triggering devices (pads, tubes, and others) on the market and my invention will work with all of them with proper mounting techniques. I will not show them all in this document.
FIG. 3 also shows the rope restraining system of FIG. 2 (37–40), but with a different bearing system. In this case, pedal assembly 23 is fixed to axle 25 which is suspended in bearings 65, 66 that are in turn mounted in suspension brackets or arms 26L, 26R. A variety of bearings, fittings, and configurations thereof can be used to allow the rotation of the pedal assembly. The device can also be constructed with no bearings at all.
FIG. 4 shows one other possible configuration. Pedal assembly 23 is fixed to axle 67 that is suspended in bearings 68, 69 mounted in brackets or arms 70, 71. Extending from the axle is arm 72 that is connected to return spring 27 utilizing adjustment bracket, screw and nut 29, 28, 30 respectively.
FIG. 5 shows the main pedal assembly (with supports left out for clarity), and it illustrates optional spacer 73 that is used for drummers who wear shoes while playing or have thick feet. The thickness and number of spacers is in accordance with the drummer's preference. One method for combining the pedal tabs to form a main pedal assembly is shown in the use of pedal block 23a and four screws with nuts 94. There are several other possible ways to form the main pedal assembly. I have also included an optional weighted collar 92 that is held in position with set screw 93. Changing the position of this collar allows the drummer to vary the momentum (feel) of the device according to personal preference.
Shown in FIG. 5a is a bracket 29a for spring adjustment screw 28 and nut 30. Several holes in bracket 29a have been drilled at differing distances from the base 36. The angle of the at-rest position of the pedal assembly will change as the height of adjustment screw 28, and corresponding angle of return spring 27, is changed. Another difference depicted in this example is hinge 95 that is used in place of an axle to allow the main pedal assembly to rotate in an arc.
If the triggering devices (pads, tubes or others) are set in close proximity to the striking device, the return spring can sometimes cause the striking device to overshoot the at-rest position and hit the opposite pad unintentionally. To prevent this unwanted characteristic, a dampening device is desirable.
FIGS. 6 and 6a show a basic pedal with an optional dampening device installed, in order to limit the free-play and spring induced oscillations of pedal assembly 23. Main pedal assembly 23 is fixed to axle 25 with bearings and brackets in the same configuration as FIG. 3. Strap 74 is wrapped around axle 25 then both ends are routed under raised bar 75 which is attached to the base of the apparatus. Bar 75 is elevated just enough for the strap ends to pass under and move freely. Spring 76 or other elastic device has one end attached to strap ends 78 and the other end of spring 76 is attached to the base with set screw 77. The tighter spring 76 tension becomes, the more free-play is reduced. This allows the triggering pads (not shown) to be placed extremely close to striking device 31 without the fear of unintended triggering caused by the pedal assembly overshooting the neutral position.
FIGS. 7 and 8 illustrate a modification to allow drummers to use a conventional drum shell in conjunction with the present invention. Many drummers will want the look of a conventional set to remain the same, and many tom-toms and other accessories are mounted on bass drum shells. FIGS. 7 and 7a are identical except for the attachment points of the pad arms.
After the rear drum head and all attachment hardware are removed as in FIGS. 7 and 7a, the pedal apparatus is mounted to the bottom of the shell. Pad support bracket 79 in FIG. 7 is mounted independently from the pedal apparatus. Each pad or tube or other triggering device can be mounted almost anywhere around the shell of the drum, and can be attached independently from each other as in 79a and 79b in FIG. 7a. The angle of pad arms 80, 81 can be varied using adjustment devices 82, 83.
Illustrated is the use of triggering devices (pads) 32, 33, each with embedded multiple electronic sensors (piezo transducers or other; 84, 85 in pad 32, 86 and 87 in pad 33). Two per pad is shown, but any number could be added. The configuration illustrated would allow a drummer to trigger blended sounds such as a bass drum and a cow bell on the downstroke, along with a conga and a gong on the upstroke (as just one example). There are literally hundreds of sound choices available in modern drum modules (sound generating computers), and my pedal takes advantage of the technology available.
FIG. 8 further illustrates the flexibility of my invention, and adds detail to one possible pedal configuration as used in FIGS. 7 and 7a. With the rear drum head and all hardware removed, base 36 is attached to the bass drum shell 88 using clip or bracket 89. Right support arm 26R remains the same, but left arm 92 has been lengthened to accept the hardware requirements of a vertically mounted return spring mechanism. One end of spring 27 is attached to a tab (or arm or other) 90 that is attached to the main pedal assembly. The other end of spring 27 is attached to adjustment screw 28 that goes through bracket 91 which is attached to left arm 92. Adjustment nut 30 is used to vary return spring tension. Either arm could be modified in this fashion; it doesn't necessarily have to be the left arm.
Also note in FIG. 8 that the striking device (tube, stick or other) 31 does not have to be attached vertically with respect to the main pedal assembly. Any angle will work, as long as striking device 31 returns to a neutral (at-rest) position between the triggering devices 32,33 and foot movement is not impeded. Striking device 31 can vary in length, weight or composition depending upon drummer preference.
As this invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, the present embodiment is therefore illustrative and not restrictive, since the scope of the invention is defined by the appended claims rather than by the description preceding them, and all changes that fall within metes and bounds of the claims, or equivalents of such metes and bounds are therefore intended to be embraced by the claims.

## Claims

1. An apparatus for triggering electronic drums, comprising:
a base;
a hub body pivotably connected to said base;
an upper tab extending outwardly from said hub body;
a lower tab extending outwardly from said hub body and spaced from said upper tab to form a space therebetween for receiving a user's toes;
a first impact sensitive electronic triggering device;
a second impact sensitive electronic triggering device;
an elongate striking device having a first end connected to said hub body and a second end extending outwardly from said hub body and disposed between said first and second triggering devices, said striking device contacting said first triggering device when said lower tab is actuated, and said striking device contacting said second triggering device when said upper tab is actuated.

2. The apparatus of claim 1, further comprising an axle assembly connecting said hub body to said base, said axle assembly having an axle disposed between and supported by first and second axle arms, said hub body connected to said axle.

3. The apparatus of claim 2, further comprising a return spring having a first end connected to one of said hub body, said axle, said upper tab, and said lower tab, and said return spring having a second end opposite said first end connected to said base, said return spring tensioning said striking device toward a neutral position intermediate said first and second triggering devices after actuation of one of said upper and lower tabs.

4. The apparatus of claim 3, wherein said second end of said return spring is connected to an adjustment bracket on said base.

5. The apparatus of claim 4, further comprising an adjustment assembly operably associated with said return spring for varying the tension thereof, said adjustment assembly having an adjustment screw and adjustment nut intermediate and connecting said second end of said return spring and said adjustment bracket.

6. The apparatus of claim 3, further comprising a dampening device having a strap having a first portion wrapped around said axle and a second portion connected to said base, said dampening device tensioned against said axle and thereby minimizing rotation of said axle beyond said neutral position after actuation of one of said upper and lower tabs.

7. The apparatus of claim 6, wherein said dampening device includes a dampening bracket secured to said base, and a dampening spring disposed between and connecting said second portion of said strap and said dampening bracket.

8. The apparatus of claim 7, wherein said dampening device further comprises a set screw operably associated with said dampening spring for adjusting the tension thereof.

9. The apparatus of claim 1, further comprising at least one triggering device bracket having a first portion connected to said base and a second portion connected to and supporting said first and second triggering devices.

10. The apparatus of claim 9, wherein said triggering device bracket includes first and second posts for receiving and supporting said first and second triggering devices, said first and second triggering devices movably disposed on said first and second posts, respectively, so that said first and second triggering devices are adjustably spaced.

11. The apparatus of claim 9, wherein said apparatus includes first and second triggering device brackets for supporting said first and second triggering devices, respectively.

12. The apparatus of claim 11, wherein said first portions of said first and second triggering device brackets are moveably connected to said base so that said first and second triggering devices are adjustably spaced.

13. The apparatus of claim 1, wherein said base includes an underside having a non-skid surface.

14. The apparatus of claim 1, further comprising a rope having a first portion secured to said base and a second portion securable to one of a stool and a floor thereby restraining said base from sliding.

15. The apparatus of claim 1, wherein at least one of said first and second triggering devices includes at least two electronic sensors, each of said electronic sensors activating a desired sound when said corresponding triggering device is triggered.

16. The apparatus of claim 1, wherein said base is a shell of a base drum.

17. The apparatus of claim 1, wherein at least one of said upper and lower tabs includes a first planar portion connected to said hub body and a second planar portion extending outwardly therefrom, said second planar portion angularly disposed relative said first planar portion.

18. The apparatus of claim 1, wherein said striking device includes a weight securable to said striking device and moveable along the length thereof so that said striking device has an adjustable momentum depending on a position of said weight.

19. The apparatus of claim 1, further comprising a footpad disposed on said base and spaced from and aligned with said hub body, said footpad configured for receiving a ball of the user's foot.

20. The apparatus of claim 1, further comprising at least one spacer disposed between and interconnecting one of said upper and lower tabs and said hub body for increasing the space between said upper and lower tabs.

21. The apparatus of claim 2, further comprising first and second bearing assemblies mounted on said first and second axle arms, respectively, each of said bearing assemblies having a plurality of bearings suspending a corresponding end of said axle.