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Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 8161975 | Dual mode impulse noise protecting earplug (D-182) A two piece dual mode earplug including an integrally molded elongated member having a nose end and an open rear end and a channel extending through. An integrally molded insert member is formed with a base portion and a rod portion and with the rod portion seated w... | 04/24/2012 |
| 7210484 | Baffled earplug An earplug (10) with a body front portion (22) for insertion into a person's ear canal, has a pocket (30) to increase comfort and is constructed to enhance noise attenuation. The pocket, which allows easier compression of the body front portion ... | 05/01/2007 |
| 7185734 | Hearing protection earplug, use of such an earplug and method for manufacturing such an earplug The invention relates to a hearing protection earplug, comprising a shell for being worn at least in part in the ear canal of a user and a faceplate (12) at the outer end of the shell or within a cavity of the shell having an outer opening, wherein the facepl... | 03/06/2007 |
| 7185655 | Underwater ear prophylactic The present invention provides a prophylactic for the ear during activities in and around water or other liquid medium where the ear is subject to infection and barotraumas. It has an outer ear section that fits tight in a user's outer ear and a watertight downwardl... | 03/06/2007 |
| 7182087 | Dual position hearing protection device The present invention is a dual position hearing protection device. In one position, the device provides substantial sound attenuation and hearing protection. In the second position, an opening in the device permits sounds to enter the ear of the user relatively uno... | 02/27/2007 |
| 7116793 | Ear pad, and earphone with the pad The ear pad according to the present invention has a number of gathered sound-insulating walls (12) monolithically provided on an outer periphery of a basic body (11) made of an elastic material such as rubber, for instance, a silicon rubber or soft sy... | 10/03/2006 |
| 7112192 | Tampon with an overwrap or overwraps having both masking and wicking properties An improved absorbent catamenial tampon is disclosed comprising an overwrap with both a masking region and a wicking region. The compressed absorbent member of the tampon has an inner region, an exterior surface, and an insertion end opposed to a withdrawal end. The... | 09/26/2006 |
| 7015812 | Sound protecting headset with proximity collision avoidance protection A proximity warning system is disposed in a sound protecting earmuff-type headset or other means of providing acoustic ear protection. The ear protector prevents the user from hearing damage from high levels of ambient sound and would otherwise generally make the us... | 03/21/2006 |
| 6981504 | Core stiffened earplug An earplug of the type that includes a soft foam body (14) and a more rigid core (16) that stiffens the body during its insertion into the ear canal, is mass produced so the front end (30) of the stiff core cannot rub along the surface of the ea... | 01/03/2006 |
| 6938621 | Disposable plug for warming the inner ear A disposable plug has a mask with an orifice aligned at the entry into the ear canal when the plug is inserted into the ear. A sealed envelope has a leading elastic tip that extends forward of the orifice into the ear canal and a trailing reservoir that extends rear... | 09/06/2005 |
| 6938622 | Earplug and apparatus with the earplugs An earplug has an open inserting end, an open inlet end, a cover, a hollow body, a soft sheath, a tube and a sound-processing unit. The sound passes through the open inlet end, is processed by the sound-processing unit and then passes into an ear canal. Alternativel... | 09/06/2005 |
| 6902029 | Retractable ear protection device The invention disclosed provides an improved ear protection system comprising an ear protection device and an innovative stowage device. The stowage device is capable for inconspicuously securing the ear protection device to an easily accessible entity such as an ar... | 06/07/2005 |
| 6691047 | Calibration of pumps, such as blood pumps of dialysis machine A method of calibrating a pump that is subject to variations in flow rate based on inlet pressure variations, such as a peristaltic pump found in medical instruments. The pressure at the inlet of the pump is measured and recorded during prior uses of the ... | 02/10/2004 |
| 6425398 | Earplug An earplug (20) is provided which allows conversation to be conducted whilst inserted in the ear, and blocks out certain noise without substantially sealing the ear canal, and causing discomfort to the wearer. In one embodiment, the earplug includes a fir... | 07/30/2002 |
| 6241042 | Hearing protective device An acoustical hearing device is presented, comprising a foam and at least one component which is mechanically bonded to the foam. The mechanical bonding of the component arises during manufacture, wherein the component is placed into a mold cavity as an i... | 06/05/2001 |
| 6151717 | Transparent or translucent earmuff cup The present invention provides an earmuff device comprising an earmuff cup having at least a window portion which is formed of an optical material which transmits light rays in such a way that the human eye can see through the material to a degree that an... | 11/28/2000 |
| 6148821 | Selective nonlinear attenuating earplug The present invention presents a selective nonlinear attenuating earplug. The earplug is tunable by the wearer and permits the wearer to select the performance of the earplug. The earplug of the present invention can function either in a selective attenua... | 11/21/2000 |
| 6148446 | Multi-position banded earmuff A noise-blocking banded earmuff wherein the earmuffs (12, 14) are fixed against rotation about a horizontal axis (34) with respect to the band (24), and wherein the band can extend upwardly around the top of the head, downwardly (24A) around the neck, or ... | 11/21/2000 |
| 6129175 | Acoustical control plastisol earpieces An acoustical control earpiece comprised of non-foamed polyvinyl chloride plastisol. The earpieces may be acoustical hearing protective earplugs as well as overmolds and covers for audio sound reproduction devices such as headphones, speakers, and hearing... | 10/10/2000 |
| 6129086 | Ear pressure equalizer A device for regulating pressure which can be used to relieve discomfort caused by inner ear pressure. The device includes a hollow body having an open end, a movable member within the hollow body which defines a first chamber that extends between the mov... | 10/10/2000 |
| 6119805 | Hearing protector adaptable to chair In order to reduce the risk of hearing damage to musicians, for example, there is suggested according to the invention a device which comprises, firstly, a floor stand portion with a foot and a post extending upright therefrom, and, secondly, a hearing pr... | 09/19/2000 |
| 6068079 | Acoustic valve capable of selective and non-linear filtering of sound Acoustic valve capable of selective and non-linear filtering of sound and placeable in a perforated ear plug. The acoustic valve consists of a tube enclosing two rigid disks axially spaced opposite each other, each of the disks containing at least one per... | 05/30/2000 |
| 5996123 | Earmuff for noise blocking A noise blocking earmuff is described, which has a better noise blocking ability and which is more comfortable than prior earmuffs. The earmuff includes a cup-shaped shell (20), a cushion (22) that surrounds the open inner end of the shell and which press... | 12/07/1999 |
| 5957136 | Earplug An earplug composed of a resilient polymeric material including a first hollow member having a closed end and an open end and with the closed end having a rounded cone shaped configuration. At least one flange member extending from the first hollow member... | 09/28/1999 |
| 5881729 | Water sports ear plug In accordance with the present invention, there is provided an ear plug for preventing water and wind from entering the ear canal while allowing audible tones to pass therethrough. The ear plug is provided with an ear plug housing which is provided with a... | 03/16/1999 |
| 5865183 | Device for equalizing pressure across the eardrum of divers A device for facilitating the equalization of pressure across the eardrum of a user, comprising (a) an ear piece being sized and dimensioned for tightly fitting the outer ear canal of the user, such that when the user being underwater, water being prevent... | 02/02/1999 |
| 5829062 | Headband with dual material construction for supporting ear protectors A headband ear protector apparatus including a pair of ear protectors and a resilient head band supporting, at opposite ends of the headband, the ear protectors. This forms a band which positions the ear protectors to lie by the opposite ears of a person.... | 11/03/1998 |
| 5819745 | Pressure-regulating ear plug A pressure regulating ear plug for regulating the rate of change of pressure inside an ear to minimize the pressure differential between the middle ear and a volume of the external ear cavity adjacent the ear drum is made of an ear plug adapted to fit tig... | 10/13/1998 |
| 5815842 | Ear protection cap with improved sound absorption An earmuff incorporating elevated sound attenuation. The earmuff comprises an outer cup (10') which connects with a sealing part. Arranged within the earmuff are a plurality of separating partitioning walls (14) which extend from the bottom wall (16) of t... | 10/06/1998 |
| 5755234 | Pressure-regulating ear plug A pressure regulating ear plug for regulating the rate of change of pressure inside an ear to minimize the pressure differential between the middle ear and a volume of the external ear cavity adjacent the ear drum is made of an ear plug adapted to fit tig... | 05/26/1998 |
| 5647377 | Noise suppressor apparatus A noise suppressor apparatus including a cylindrical member having an open upper end, a closed lower end, a cylindrical side wall therebetween, and a hollow interior. The closed lower end has an aperture formed therethrough. A noise suppressing portion is... | 07/15/1997 |
| 5628330 | Apparatus for treating people afflicted with tinnitus Methods and means of treating a person afflicted with Tinnitus in order to relieve the discomfort and aggravation of the affliction uses apparatus that includes: a metal shell of generally hemispherical shape and diameter about the same as a person's head... | 05/13/1997 |
| 5551090 | Ear protecting apparatus An ear protecting apparatus adapted to protect children and infants from discomfort and potential hearing damage associated with noisy environments. The apparatus includes an adjustable headband having a pair of noise-attenuating earmuffs provided at oppo... | 09/03/1996 |
| 5488961 | Hydrophobic ear plugs Ear plugs for swimming, snorkeling, scuba diving and other water related activities form a watertight seal within an individual's outer ear canals. The ear plugs have a lumen extending along the ear canal. A hydrophobic membrane extending across the lumen... | 02/06/1996 |
| 5467784 | Pressure-regulating ear plug A pressure regulating earplug for regulating the rate of change of pressure inside an ear to minimize the pressure differential between the middle ear and a volume of the external ear cavity adjacent the ear drum is made of an ear plug adapted to fit tigh... | 11/21/1995 |
| 5241971 | Ear-protection cup for ear muffs or head-phones An ear-protection cup for ear muffs or headphones comprising a cup-shaped frame and a resilient sealing member located at the peripheral edge thereof, by means of which the ear-protection cup can be brought into abutment with an annular shaped part of a u... | 09/07/1993 |
| 5224495 | Sun and sound shielding arrangement A sun and sound shielding arrangement (10) for allowing a person to sleep in a bright noisy environment wherein the arrangement (10) includes a sun shade member (20) having an open end box configuration provided with air flow openings (24); and, an ear pl... | 07/06/1993 |
| 5202362 | Syringeable ear plug molding putty composition A lightweight silicone ear molding putty composition is disclosed for chronic ear patients and myringotomy children to protect ears which includes a mixture comprising of silicone hydroxy functional fluid, crosslinker, and tints as well as a number of add... | 04/13/1993 |
| 4930520 | Earpiece for auditory testing of infants An earpiece is provided for use in auditory testing of infants which is formed of a toroidal baffle of anechoic insulative foam material having on one side a clear window and on the opposing side an adhesive material for binding to the region around the e... | 06/05/1990 |
| 4870689 | Ear wax barrier for a hearing aid An ear wax barrier for a hearing aid to prevent ear wax from contacting and damaging the internal components of a hearing aid or hearing aid receiver. The barrier includes a housing defining a central axis of passage, as well as a plurality of projections... | 09/26/1989 |
