Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 8188355 | Adjustable depth snare drum A snare drum having four cylindrical members which nest within and are permanently attached to each other from the top shell of the drum. The top ends of the four cylindrical members are located adjacent to each other and the bottom ends of the third and fourth cyli... | 05/29/2012 |
| 8163988 | Snare tension device The invention relates to a snare tension device for tensioning and releasing a snare wire. In the snare tension device a rotation movement of a rotation element is transferred to a pushing element by means of a transfer element. ... | 04/24/2012 |
| 8017846 | Strainer and snare drum A strainer includes a strainer body, a slider to which a cam follower is fixed, a holder to which snare wires are fixed, an operating lever, and a cam that is pivoted through operation of the operating lever. The slider is slid relative to the strainer body by pivot... | 09/13/2011 |
| 7884272 | Snare strainer having a magnetic holding member A snare strainer adapted to a snare drum is equipped with two strainers, which are attached to the opposite positions on the circumferential exterior of a cylinder of the snare drum and which control a snappy member to be selectively brought into contact with or sep... | 02/08/2011 |
| 7745712 | Quick release for snare strainer and butt end apparatus and method In the specification and drawing, a coupling is described and shown connecting a snare to a snare drum, the snare drum having a drum wall with a top edge and a bottom edge. The coupling connects a male section to a female section. The male section and female section... | 06/29/2010 |
| 7741550 | Strainer system of snare drum and snare drum with the strainer system A snare drum includes a strainer system which switches the position of a snare wire between an OFF position spaced from a lower drumhead and an ON position in contact with the lower drumhead. The strainer system includes a frame to which the snare wire is attached, ... | 06/22/2010 |
| 7728211 | Snare drum end plate and strap A snare drum wire set comprises a generally rectangular rigid plate having a front, a back including a central region having an aperture, left and right sides, and a top and a bottom. The back has a support leg on each side of the central region and an elevated back... | 06/01/2010 |
| 7692083 | Drum A drum having a resonant chamber for producing a range of sounds and at least one device for allowing the sound so produced to be altered, which includes a plurality of internal snares which can be brought into contact with the internal surface of the external surfa... | 04/06/2010 |
| 7649132 | Snare drum assemblies, including assemblies with flexible snare anchors, and associated methods Snare drum assemblies, including assemblies with flexible snare anchors, and associated methods are described. A drum assembly in accordance with one embodiment includes a set of snare strands, each having a first end and a second end, a first, flexible snare anchor... | 01/19/2010 |
| 7498501 | Snare-adjusting device for a snare drum A snare-adjusting device is mounted on a snare drum for adjusting tension of a snare and has a base, adjustment assembly and snare mount. The adjustment assembly is mounted through the base and has a barrel, shaft, slider, adjustment head and friction ring. The barr... | 03/03/2009 |
| 7482522 | Cajon incorporating a snare carpet In a cajon incorporating a snare carpet that rests against the reverse of a front plate, provision is made that the snare carpet is supported pivotable and actuatable by means of a pedal. ... | 01/27/2009 |
| 7462771 | No drill snare drum strainer adapter A method and device for mounting a Snare drum strainer on a snare drum in place of an Anti-Friction Drum Strand Tensioner or Drum Strand Tensioner. The device consists of a small plate with one or more strategically placed holes to mount the snare drum strainer vert... | 12/09/2008 |
| 7439433 | Snare drum strainer A snare drum strainer includes a switch stand, a brake part, a suspender steady base and a pull handle driven part. The brake part can slide inside the switch stand and also can move upward and downward. The suspender steady base is steady located at a lower end of ... | 10/21/2008 |
| 7435887 | Snare drum assemblies, including assemblies with flexible snare anchors, and associated methods Snare drum assemblies, including assemblies with flexible snare anchors, and associated methods are described. A drum assembly in accordance with one embodiment includes a set of snare strands, each having a first end and a second end, a first, flexible snare anchor... | 10/14/2008 |
| 7365256 | Snare tensioner for a snare drum A tensioner system for a snare assembly adapted to be attached to a percussion instrument, comprising a main body adapted to be fixedly mounted to the percussion instrument; a snare fastener assembly for fastening snares with respect to the main body; a rotatable te... | 04/29/2008 |
| 7312389 | Snare strainer A snare strainer includes first and second strainers for respectively holding both ends of a snare assembly (i.e., snares), which is controlled to move in close contact with or apart from a bottom-side drumhead of a snare drum. The first strainer includes a fixed ba... | 12/25/2007 |
| 7301087 | Low friction system for snare drum tension adjuster A tensioning system for a snare assembly adapted to be attached to a percussion instrument, comprising a main body adapted to be fixedly mounted to the percussion instrument; a snare fastener assembly for fastening snares with respect to the main body; and a pivotab... | 11/27/2007 |
| 7291776 | Adjustable venturi for a drum A vent for a drum or drum head is provided. The vent includes a valve which is mounted on the side of the drum or drum head which can be adjusted between fully open and fully closed positions and may provide a range of settings between those two positions. A number ... | 11/06/2007 |
| 7262355 | Snare strainer A snare strainer adapted to a snare drum comprises first and second strainers, which are attached to opposite positions on the exterior circumferential surface of a drum cylinder and by which a snappy member including snares is controlled to move in close contact wi... | 08/28/2007 |
| 7244883 | Drum container A drum including a cylindrical shell having an upper edge defining an open top end, and a lower edge defining an open bottom end; a drum skin disposed over the top end; a plurality of lugs mounted on an outer surface of the shell in positions annularly spaced adjace... | 07/17/2007 |
| 7223910 | Snare drum A snare drum including a drum shell having an upper head and a lower head mounted thereon and a frame for holding a plurality of snare wires. The frame arranges the snare wires to be in contact with the lower head or to be spaced from the lower head. The snare drum ... | 05/29/2007 |
| 7220905 | Strainer for a snare drum A strainer for a snare assembly adapted to be attached to a percussion instrument, comprising a tensioning mechanism for applying a tension to snares of a percussion instrument; a lever having a first end and a second end, the lever being pivotably mounted to the te... | 05/22/2007 |
| 7202405 | Snare assembly with graduated tonal effect A snare assembly for application in a snare drum including a cylindrical shell, a lower drum head and an upper drum head oppositely secured to the drum shell, and a snare strainer mounted to the drum shell for applying tension to the snare assembly. The snare assemb... | 04/10/2007 |
| 7199296 | Snare drum device A device for tension rods or attachment bolts for snare drums. The threaded tension rod or bolt may be a threaded locking bolt. In this way, the vibration caused by use of the drum does not lead to disengagement of the attachment means, or disengagement of the nuts ... | 04/03/2007 |
| 7151211 | Snare drum adjustable dampening device A device for dampening sounds produced by a drumhead of a musical drum having a drumshell comprising a frame assembly having a first elongated bar member with a first channel and a second elongated bar member with a second channel. The two bar members are disposed i... | 12/19/2006 |
| 7074996 | Drum head assembly and method of tensioning a drum head There is provided a drum head assembly. The drum head assembly has an outer member and an inner member. The outer member has an L-shaped step on its inside surface with posts extending outward from the base of the step. The depth of the inside edge of the outer memb... | 07/11/2006 |
| 6958440 | Adjust device for adjusting a tension of a snare of a snare drum An adjust device for adjusting a tension of a snare of a snare drum includes a body laterally secured on a periphery of the snare drum. A slider is movably received in the body and one end of the snare is secured on the slider so that the tension of the snare is adj... | 10/25/2005 |
| 6955498 | Circular conduit opening closure device The closure device for a circular conduit opening may be used to inhibit entry of debris and other matter into a conduit. The closure device may have an outer band, an inner band and a cover wherein a perimeter edge of the cover may be fastened between the outer ban... | 10/18/2005 |
| 6927330 | Drum with modulated acoustic air vent A tunable drum is shown having a hollow drum shell, and imperforate drumheads closing the ends of said drum shell. One or more opening extend through the drum shell for acoustic venting, and valves are provided for adjusting the size of the openings to vary the amou... | 08/09/2005 |
| 6916977 | Drum In a drum in which a drum head installed on one or both of open ends of a trunk main body that constitutes a drum main body of the drum is tightened by lug bolts and stretched by a hoop, reinforcing rings are provided in anchoring holes that are formed in the hoop f... | 07/12/2005 |
| 6891098 | Anti-friction drum strand selective tensioner A throw-off device for use on a drum having a side wall and a head, a support body attachable to the side wall of the drum, a tensioning member movable relative to the body to tension or release strands adjacent the drum head, a lever movable between selected positi... | 05/10/2005 |
| 6867355 | Drum acoustic wire assembly and a drum using the same A drum acoustic wire assembly installed on a drumhead, including a plurality of acoustic wires disposed side by side in a direction perpendicular to the direction of the axis of each one of the wires, and a pair of wire holding plates that hold both ends of the acou... | 03/15/2005 |
| 6849793 | Drum acoustic wire assembly and a drum using the same An acoustic wire assembly mounted on a drumhead, including a plurality of acoustic wires disposed parallel to each other so as to be brought into contact with and moved away from the drumhead in which at least some of the acoustic wires are polygonal (square, pentag... | 02/01/2005 |
| 6846978 | Strainer for a drum A snare drum strainer mountable to the shell of a drum comprises a piston and an actuator. The piston has an axis and a surface curved about an axis generally parallel to the piston axis, and the piston is operatively connected to snares. The actuator and the curved... | 01/25/2005 |
| 6700046 | Snare-switch mechanism connected to the snareband of a snare drum The invention submitted pertains to a snare-switch mechanism for the snareband (2) of a snare drum (25), whereby one end of the snareband (2) is essentially fixed and the other end is connected to an adjusting mechanism (1), which is movable between a tig... | 03/02/2004 |
| 6689944 | Drum acoustic wire and drum An acoustic wire for a drum comprising a single long wire made of metal, resin, etc. and strung in a plurality of turns between a pair of supporting members. The single long wire in the form of a plurality of parallel acoustic wires comes into contact wit... | 02/10/2004 |
| 6573442 | Anti-friction drum strand tensioner A throw-off device for use on a drum having a side wall and a head, a support body attachable to the side wall of the drum, a tensioning member movable relative to the body to tension or release strands adjacent the drum head, a lever movable between sele... | 06/03/2003 |
| 6534698 | Snare strainer for a snare drum To adjust the tension on the snare of a drum head, one end of the snare is supported to an adjustment device, including a base on the drum trunk, a slide guided for movement vertically along the base and the snare is attached to the movable slide. First a... | 03/18/2003 |
| 6462262 | Drum A drum main body comprising first, second and third drum body elements of cylindrical shape arranged in axial direction thereof. The third drum body element is interposed between the first and second drum body elements and is connected to rims of the firs... | 10/08/2002 |
| 6441287 | Snare drum mechanism A snare drum assembly is provided which enables the snare drum element to be positioned internally of a drum. In the preferred embodiment, the snare mechanism acts against the top drum head of a drum, and permits the drum manufacturer to eliminate the low... | 08/27/2002 |