Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 7265288 | Key structure A key structure which is free from separation between a wood part thereof and a key base body to which the wood part is secured and has enhanced vertical rigidity in the vicinity of a clearance between the base end of the key base body and the wood part. In the key ... | 09/04/2007 |
| 7256336 | Stringed instrument and associated fret mapping method A stringed instrument and associated fret mapping method. The instrument includes a neck having a fret board provided with a plurality of frets having offset string contact regions along their length, whereby accurate intonation of a note is achieved when a string i... | 08/14/2007 |
| 6740801 | Action for keyboard-based musical instrument An action for a keyboard-based musical instrument is provided for preventing action parts made of a synthetic resin from being charged to eliminate stains due to dust and motes in the air attracted by static electricity. The action is composed of a plurality of acti... | 05/25/2004 |
| 6713130 | Method to produce a ceramic product having controlled modules of elasticity and internal friction characteristics A method to make a mouthpiece body having a predetermined set of desired characteristics for a given application comprises providing a porous ceramic material, infiltrating it with an acrylic resin, and curing the article, wherein the properties of the ceramic mater... | 03/30/2004 |
| 6531651 | Key for musical instrument A key is provided for permitting simple attachment of a weight and easy adjustment of a touch load, while using an alternative material for substitution for lead as a material for the weight, to thereby reduce the manufacturing cost. A swingable key body ... | 03/11/2003 |
| 6417440 | Damper formed of powder-containing synthetic resin and keyboard musical instrument equipped with the same Dampers are spaced from and brought into contact with associated sets of strings for defining piano tones, and the vibration absorbing capability is to be equalized among the dampers by regulating the weight, wherein at least one of the damper head and th... | 07/09/2002 |
| 6255567 | Stringed musical instrument with composite body partially formed of metal or synthetic resin An electric guitar has a body, a neck projecting from the body, strings stretched over the body and the neck and a pick-up attached to the body under the strings for producing an electric signal representative of vibrations of the strings, wherein the bod... | 07/03/2001 |
| 5955688 | Composite string instrument apparatus and method of making such apparatus A string instrument, such as a violin, is made of graphite fiber cloth and unidirectional graphite fiber sheets and epoxy resin. The instrument includes a unitary body, including a back, a rib, a neck, and a pegbox, all molded as a single or unitary eleme... | 09/21/1999 |
| 5920021 | Drum head with sound attenuating annular coating A sound attenuating drum head that comprises a support ring, a synthetic membrane carried by the ring, a thin coating extending in an annular direction on the membrane, and acting to attenuate vibration of the head, when struck.... | 07/06/1999 |
| 5905219 | Stringed musical instrument body and neck composition and method of making body and neck A composition and method of making bodies and necks for stringed musical instruments is provided. The composition is basically an unsaturated compound poly-urethan resin and an inorganic filler, or components comparable thereto, which are combined with a ... | 05/18/1999 |
| 5811702 | Keyboard musical instrument having hammer heads formed of metallic powder containing synthetic resin and process of fabricating hammer assembly A keyboard music instrument includes a keyboard, key action mechanisms functionally connected to keys of the keyboard, strings assigned notes of a scale and hammer assemblies for striking the strings. The hammer assemblies have respective hammer heads for... | 09/22/1998 |
| 5686680 | Process for the manufacture of musical instruments and instruments so obtained A process for the manufacture of a material for making a wind musical instrument and for making the instrument includes the steps of providing a wood powder, incorporating into the powder fibers chosen to adjust the modulus of elasticity of the mixture to... | 11/11/1997 |
| 5616873 | Stringed musical instrument A light weight guitar neck construction and associated method of manufacture involves the use of a wood core with a strengthening layer, preferably of carbon fiber, and a finish layer, preferably a fiberglass sheet, both impregnated with a high temperatur... | 04/01/1997 |
| 5602355 | Percussion impact implements and methods for making the same A drumstick body and method for fabricating the same, the drumstick body having resin coated fibers and a filler material. The method includes the steps of coating at least one fiber with resin, wrapping a length of the fiber around a roller, placing the ... | 02/11/1997 |
| 5559297 | Key for keyboard instrument having a perspiration-absorbing surface A key for keyboard instruments includes a molded key body and a perspiration-absorbing sheet. The molded key body is pivotally secured to a supporting member of the instrument and formed of a synthetic resin. The perspiration-absorbing sheet is provided o... | 09/24/1996 |
| 5517891 | Guitar pick guard The invention is a guitar pick guard, for mounting on a guitar having a guitar body, a neck, and a bridge. The guitar pick guard is mounted to the guitar body between the neck and the bridge. The guitar pick guard has a top layer, a bottom layer and a mid... | 05/21/1996 |
| 5463923 | Electric guitar having a solid body made of wood fiber board, and method of making the same An electric guitar has a body part and a neck part made of medium-density fiberboard, with the density of about 0.5 g/cm3, formed by heating and pressing wood fibers of single whitish conifer chips together with an adhesive, processed to be of ... | 11/07/1995 |
| 5458036 | Bottleneck slide bar with sectors of different materials A slide bar for use with stringed instruments, such as the guitar or the dobro, includes two longitudinal halves with each half having a semi-cylindrical configuration. The two halves are made of different materials and are joined to form a hollow cylinde... | 10/17/1995 |
| 5408911 | Musical instrument string A method of treating a nylon or other non-ferromagnetic musical instrument string so that its movement is detectable by a ferromagnetic pickup includes applying ferromagnetic material to a portion of the string when the string is mounted to an instrument.... | 04/25/1995 |
| 5406874 | Melamine sheet guitar A stringed instrument having a neck coupled to a hollow body portion, the hollow body portion being constructed primarily utilizing synthetic resin laminate sheets.... | 04/18/1995 |
| 5235893 | Tuned musical handbell made of aluminum A tuned musical handbell has been devised which has a surprisingly excellent musical tone quality. A bell casting made from aluminum is sized and tuned by metalworking processes to frequencies below 196 Hertz. Aluminum alloys, such as numbers 319, 356, an... | 08/17/1993 |
| 5227572 | Titanium reed for musical instruments A titanium reed is formed by cutting a hardened sheet of high-grade titanium into a strip where length and width are determined by the standard sizes and lays of mouthpieces of various musical instruments in the woodwind family. The titanium sheet stock f... | 07/13/1993 |
| 4977808 | Stringed musical instrument with a solid body made of clay based material A stringed musical instrument, such as an electric guitar, having a solid body made of clay-based material. The body is made by shaping a greenware from a clay-based material, and firing the greenware to cause it to permanently harden. The body is then gl... | 12/18/1990 |
| 4682527 | Peg drops The mixture includes between 300 and 600 ml. of isopropyl alcohol, 100 to 199 ml. of tincture of green soap, 100 to 199 ml. of glycerin and between 21 and 43 grams of violin rosin. These ingredients are mixed until an amalgamated and homogeneous solution ... | 07/28/1987 |
| 4339981 | Soft body guitar A guitar is provided with a soft pillow-like body or cushion instead of the large sound box of a Spanish-type guitar or the substantially flat non-yielding body of an electric guitar. The soft cushion avoids uncomfortable localized contact between the bod... | 07/20/1982 |
| 4337682 | Piano soundboard A laminate soundboard for a piano or the like having a metal core of a modulus of elasticity and an inherent damping factor corresponding to steel of at least a grade St 34, and at least one outer cover layer of wood or plastic bonded thereto in full surf... | 07/06/1982 |
| 4308784 | Ceramic parts for stringed musical instruments An improved fret, nut and/or, bridge saddle for stringed instruments comprises a polished aluminum oxide ceramic. The ceramic of this invention is long lasting and provides improved tonal clarity, and can increase greatly the ease with which a strummed in... | 01/05/1982 |
| 4297937 | Arm and key bed assembly for a piano and the like A piano case or frame includes a laminated key bed and side arms joined with the bed at each end. The key bed supports the keyboard and associated portions of the piano action, and is assembled with each side arm of the frame by means of a rabbet joint. F... | 11/03/1981 |
| 4161130 | Body for bass guitar A bowl-shaped body formed in a single piece of graphite, fiberglass or impregnated fabric and having a waist separating a smaller upper bowl portion from a larger lower bowl portion. The lower bowl portion has a circular bout and is substantially deeper t... | 07/17/1979 |
| 3969970 | Transparent grand piano tops This application discloses a grand piano with a transparent lid or cover, and a special hinge structure mounting the lid for pivotal movement into open and closed positions.... | 07/20/1976 |
| 3943816 | Guitar neck A guitar neck which is cast of epoxy resin and a powdered filler, preferably of aluminum metal. This guitar neck, when fastened to a conventional guitar, is of greater strength than conventional laminate wood guitar necks and may be consequently formed of... | 03/16/1976 |