Bizarre Patents
Ballistic resistant body covering
A ballistic resistant body covering for protecting the torso, groin and neck area from ballistic missiles.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5319717 | Hearing aid microphone with modified high-frequency response A microphone for a hearing aid having a modified high frequency response is disclosed. The hearing aid comprises a hollow housing having an upper wall, a lower wall and a depending wall disposed between the upper wall and the lower wall. The upper, lower ... | 06/07/1994 |
| 5303305 | Solar powered hearing aid A hearing aid employs a permanent built-in rechargeable storage cell or battery, and a solar cell or other photo cell which powers the electronics of the hearing aid and recharges the storage cell. Favorably, a thin film amorphous silicon cell is employed... | 04/12/1994 |
| 5289544 | Method and apparatus for reducing background noise in communication systems and for enhancing binaural hearing systems for the hearing impaired Directional hearing in noisy environments is enhanced using small conventional microphones. In one embodiment a conventional first order bidirectional gradient microphone is employed in connection with a barrier to produce sound shadow at the rearward end... | 02/22/1994 |
| 5285499 | Ultrasonic frequency expansion processor A method and apparatus for ultrasonic frequency expansion is characterized by expanding audiometric frequencies before translation into the ultrasonic range. The audiometric signals are first expanded in time by a factor of 1/ଲ where ଲ | 02/08/1994 |
| 5259032 | contact transducer assembly for hearing devices A contact transducer assembly for an electromagnetically driven hearing device such as a hearing aid or other audio signal reproducing device worn by a user is described. The contact transducer assembly includes a transducer which is attached to a biocomp... | 11/02/1993 |
| 5239588 | Hearing aid A hearing aid having a stereophonic microphone mounted on a flexible base and an adhesive for adhering it to the top of the head. This substantially eliminates the shadow effect encountered when two separate hearing aids are used, one for each ear, which ... | 08/24/1993 |
| 5224171 | Method for printing on synthetic resin molded body and headphone housing on which printing has been made by the method A method for printing a letter, character or a figure on an inner ear type headphone, which is a molded body of a thermoplastic synthetic resin, by irradiating the surface with a laser light, and a headphone housing on which the letter etc. has been print... | 06/29/1993 |
| 5222151 | Earphone An earphone has a case housing an electroacoustic transducer, the case being adapted to be put in the concha of the auricle of an ear. The case is of an elliptical shape so that it can snugly fit in the concha without under pressure imposed on the ear.... | 06/22/1993 |
| 5214709 | Hearing aid for persons with an impaired hearing faculty Hearing aid for persons with an impaired hearing faculty, including a directional microphone whose pick-up characteristic can be altered, the pick-up characteristic being automatically controlled as a function of the input or output signal in such a way t... | 05/25/1993 |
| 5208867 | Voice transmission system and method for high ambient noise conditions An earpiece has a structural configuration effective to removably interlock its outer surface contiguously to the outer ear auricle of the earpiece wearer. A microphone substantially exclusively receives, from the air of the external auditory canal, outbo... | 05/04/1993 |
| 5142587 | Intra-concha type electroacoustic transducer for use with audio devices etc. An intra-concha type electroacoustic trasducer has an auxiliary supporter projecting in opposite direction to entrance part of external auditory meatus of the user's ear from a side of the transducer opposite to its sound-radiating side disposed to face t... | 08/25/1992 |
| 5073947 | Hearing device for a protective helmet The invention concerns a hearing device for a protective helmet with a receiving deice for auditory signals, that at the very least are deliverable from the earphones arranged on the inner surface of the protective helmet. The invention has as its basic f... | 12/17/1991 |
| 5048092 | Electroacoustic transducer apparatus An electroacoustic transducer apparatus of a type that it is inserted into a cavum concha upon use. The electroacoustic transducer apparatus of the invention is applied to a headphone of a so-called in-the-eart type or so-called inner-ear type. This headp... | 09/10/1991 |
| 5029216 | Visual aid for the hearing impaired A multi-channel electronic visual aid device which is able to signal to the user whether sound is coming from the left or right, front or back, or both. For the plurality of channels, which may operate in pairs, the sound is picked up by a respective micr... | 07/02/1991 |
| 4975967 | Earplug for noise protected communication between the user of the earplug and surroundings The earplug inserted in the auditory canal is so designed that its inside end facing the tympanic membrane makes close contact with the surrounding hard bone structure, and its external end at the aperture of the auditory canal makes close contact with th... | 12/04/1990 |
| 4926159 | Apparatus and method for the generation of directionally perceptible sound An apparatus and method to generate high intensity sound having a strong directional characteristic. The apparatus preferably uses a sound element (e.g. piezo sounder) which is capable of generating a high intensity, power efficient sound, but which has p... | 05/15/1990 |
| 4904078 | Eyeglass frame with electroacoustic device for the enhancement of sound intelligibility An eyeglass frame and electroacoustic device combination for the improvement of natural hearing has temples that contain or carry electronic and electroacoustic devices. To enable persons with reduced hearing to again be able to follow a conversation in n... | 02/27/1990 |
| 4821501 | Suspension cable casing system A suspension cable is encased in a metal pipe formed from a metal strip wound in a series of adjacent helical windings on the cable. The longitudinal edges of adjacent windings are connected by a continuous tight fold.... | 04/18/1989 |
| 4821323 | Stereo headphone A stereo headphone has a generally "U"-shaped head band provided with a pair of head band support rails at opposite ends thereof. End portions of the head band are received for sliding extension and retraction withing the support rails. A speaker support ... | 04/11/1989 |
| 4773095 | Hearing aid with locating microphones A hearing aid which can be built into a frame, such as eyeglasses, to be worn by a hearing-impaired person has a first microphone arrangement having a directional reception pattern, and a second microphone arrangement for sound locating. The second microp... | 09/20/1988 |
| 4751738 | Directional hearing aid A pair of sensitive microphones or transducers are mounted on a user's body, spaced apart by a distance equal to one-half a wavelength of the center frequency of a range of frequencies to be emphasized. By summing the outputs of the two microphones, sound... | 06/14/1988 |
| 4739511 | Hearing aid A hearing aid having a comparator or comparators which compare speech sound signals obtained by a first transducer with reference voltage(s) as slice level(s) formed from a standard voltage and which output time series square wave containing frequency inf... | 04/19/1988 |
| 4723293 | Hearing aid apparatus A hearing aid apparatus has a housing containing components such as a microphone, an amplifier and an earphone,and to which a terminal having contacts for connection to a signal line is applied. The terminal also has contacts for derivation of signals fro... | 02/02/1988 |
| 4712244 | Directional microphone arrangement A directional microphone arrangement has a number of discrete microphones each having an electrical output and elements for deriving first and second electrical signals which are 180° out of phase with respect to each other from the outputs of the microp... | 12/08/1987 |
| 4689818 | Resonant peak control A hearing aid having a microphone, an amplifier and a receiver for delivering the amplified sound to a user's ear, in which an adjustable resonant peak control is used to shift the frequency response of the amplifier to a lower frequency range in order to... | 08/25/1987 |
| 4622440 | Differential hearing aid with programmable frequency response A differential input hearing aid with a programmable frequency response provides the hard of hearing with the capability to listen to individual conversations in the midst of high ambient background noise, and to have the frequency response of the hearing... | 11/11/1986 |
| 4539439 | Plugs, receptacles and hearing aids A connecting cord has a plug at each end. Either such plug may be plugged into the receptacle of a hearing aid and the other plug may be plugged into an external microphone. The contacts of each plug are connected in a different circuit configuration to t... | 09/03/1985 |
| 4519195 | Helical wrapping of tape A system for helically wrapping a tape comprises tape twisting means, and, upstream of the twisting means, means for shaping the tape. The shaping means comprises a body over which the tape passes, the body having a first surface of at least partially cyl... | 05/28/1985 |
| 4471171 | Digital hearing aid and method To match the operation of a digital hearing aid directly to user requirements, and to reprogram the hearing aid as the hearing aid and/or user response characteristics change, a digital data processing element (12) processing digitized audio signals is co... | 09/11/1984 |
| 4449018 | Hearing aid Apparatus is described for restoring the original comprehension of sounds reaching a human ear, including direction, elevation and frequency. An enclosure surrounds the pinna of the ear to substantially exclude exterior sounds. First and second speakers a... | 05/15/1984 |
| 4448015 | Winding method and apparatus A linear material 41 is once wound on a winding drum 3, and then wound on a core bar 1 by a winding disk 2. The winding disk 2 periodically reverses the direction of rotation.... | 05/15/1984 |
| 4329676 | Potentiometer A potentiometer providing a variable electrical resistance between input and output terminals for use in electronic circuits, as for volume control, light control, instrumentation control or the like. A potentiometer includes a housing assembly comprised ... | 05/11/1982 |
| 4294064 | Method of and a device for balancing a changing load of a strip roll orbiting about an axis in a strip winding machine The method of balancing a changing load of a strip roll orbiting about an axis in a strip winding machine comprises the steps of measuring the changing diameter of the strip roll, converting the measured change into electrical control pulses fed to a reve... | 10/13/1981 |
| 4142072 | Directional/omnidirectional hearing aid microphone with support A hearing aid is described which comprises an outer front opening and an outer rear opening which are connectable to the respective sides of a membrane in a microphone within the housing of the hearing aid for directional use, and mechanical means for clo... | 02/27/1979 |
| 4051330 | Hearing aid having adjustable directivity A hearing aid having a two port microphone for adjustable directivity. The microphone front port is connected to a front port in the casing by a soft resilient rubber tube. The microphone rear port is connected by another soft resilient rubber tube to an ... | 09/27/1977 |
| 4041251 | Hearing aid to be worn behind the ear of the user and provided with a pressure-gradient microphone A hearing aid to be worn behind the ear and including a pressure-gradient microphone is designed so as to give a defined directional effect. The rear surface of the microphone communicates with the ambient atmosphere by way of an acoustic resistor compris... | 08/09/1977 |
| 3983336 | Directional self containing ear mounted hearing aid Improved quality of sound perception and discrimination in a self-powered, ear-mounted hearing aid is accomplished by pivotally mounting the sound inlet passage for 360° rotation in a plane parallel to the ears of the wearer.... | 09/28/1976 |
| 3975599 | Directional/non-directional hearing aid A hearing aid in which the sound reception characteristics are selectable by a user to provide a non-directional or directional reception, as desired. The hearing aid houses a differential transducer having two sound receiving ports communicating with fro... | 08/17/1976 |
| 3946168 | Directional hearing aids A miniature hearing aid unit to be fitted to and carried on a person's head; there being a directional microphone in the housing which has front and rear sound admitting openings to respectively supply sounds to the fore and aft ports of the directional m... | 03/23/1976 |
