Famous Patents
Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 5392162 | Illuminated travel make-up mirror An illuminated travel make-up mirror comprising a frame for pivotally mounting a mirror used in applying make-up. Small incandescent bulbs are arranged in a frame in spaced and opposing parallel rows in juxtaposition with the mirror, with the bulbs being ... | 02/21/1995 |
| 5377411 | Hair cutting appliance A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head. A manually operated or finger depressible member is pivotally mounted on the handle in a ... | 01/03/1995 |
| 5168794 | Apparatus for brewing coffee Apparatus for brewing coffee having a heating compartment provided with water at various predetermined levels depending upon the number of cups of brewed coffee desired. A U-shaped syphon tube is provided in the heating compartment and is arranged so that... | 12/08/1992 |
| 5131932 | Filter replacement indicator An indicator for indicating values of a variable condition being measured, as for example in a portable air cleaner having replaceable filters subjected to particulates in the air. The indicator is provided with an indicia scale marked off in uniformally ... | 07/21/1992 |
| 5111529 | Portable air humidifier The components of an electric warm-air humidifier are enclosed in a housing. The components include an evaporation chamber in the shape of an inverted cup which has a steam outlet in its top and contains an electric heating element positioned at a short d... | 05/05/1992 |
| 4151644 | Device for dislodging ingrown facial hairs A device for lifting and dislodging ingrown facial or neck hairs from the skin and which device is adapted for use either independently or as incorporated in the cutter head of electric dry shaver. The device includes a plate member formed with raking tee... | 05/01/1979 |
| 4136705 | Hair roller A hair roller is described having first and second flexible, generally planar roller members which are hinge coupled and are deflectable from a generally planar configuration into a body having a generally cylindrically shaped configuration. Edge segments... | 01/30/1979 |
| 4136706 | Hair roller An improved hair roller is disclosed which is adapted to be stored in a substantially flat configuration and to be expanded into a body having a cylindrically shaped configuration which is substantially resistant to bending and buckling. The hair roller c... | 01/30/1979 |
| 4112271 | Counter device associated with switch actuator of electrical shaver to determine battery recharging and use A counting device for a battery operated appliance for visually displaying on a counter dial the number of uses of the appliance between recharging or replacement of the batteries. The counter dial is mounted within the appliance with an indicia portion v... | 09/05/1978 |
| 4085309 | Control circuit arrangement for a portable electrically heated hair treatment appliance An airstream is established and flows about a resistance heater element in an electrical appliance. The heater element is energized by a cyclical potential. A temperature control circuit is provided which includes a switch connected in series with a heat ... | 04/18/1978 |
| 4081902 | Cutter head assembly for an electric dry shaver A cutter head assembly for an electric dry shaver including a cutter unit for shearing long facial or body hairs comprising an elongated U-shaped cutter member having a deep central longitudinally extending hair receiving channel. Combing teeth are provid... | 04/04/1978 |
| 4074427 | Auxiliary trimmer assembly Auxiliary trimmer unit for an electric dry shaver comprising a stationary and a movable cutter wherein the movable cutter is provided with spaced dual cutting surfaces. A guard unit is provided for the trimmer unit and means are provided to permit shiftin... | 02/21/1978 |
| 4066865 | Portable hair drying appliance and heating element assembly therefor A heater assembly for an electrical appliance such as a portable hair dryer. The heater assembly includes an elongated flexible foil resistance element having opposite longitudinal edge portions mounted on spaced disc support members. T-shaped tabs extend... | 01/03/1978 |
| 4039774 | Portable hair dryer A portable hair dryer comprising an elongated casing of circular transverse cross-section and including a handle portion at one end an air discharge nozzle portion at the opposite end and an enlarged diameter intermediate section housing operative element... | 08/02/1977 |
| 4027348 | Skin treatment appliance A hand-held portable electrical skin treatment appliance and particularly for use in the care of facial skin wherein the appliance is provided with means for detachably mounting various skin treatment devices to a rotary drive output. The attachment devic... | 06/07/1977 |
| 4019260 | Hair treatment method and device An improved hair treatment method and device is described which provides for causing pulsatons to occur in an air stream which is utilized for hair treatment. The pulsatons operate to fluff the hair while the hair is simultaneously treated by the air stre... | 04/26/1977 |
| 4009518 | Electric dry shaver having flexible foil type outer cutter A mounting arrangement for securing a flexible foil outer cutter to an electric dry shaver housing in operative relationship relative to a driven inner cutter. The outer cutter foil is arranged within a frame hinged to the upper portion of the shaver casi... | 03/01/1977 |
| 4001933 | Cutter drive arrangement for an electric dry shaver A drive assembly for a movable cutter of an electric dry shaver and which assembly includes a driven member detachably mounted on a motor operated oscillator arm. The driven member includes a rectangular plate having means supporting a plurality of cutter... | 01/11/1977 |
| 3997968 | Switch arrangement for hand-held portable electrical appliances An electric power switch arrangement for a hand-held, portable electrical appliance is disclosed which provides improved positive, mechanical switch detenting. A mount for the switch comprises a receptacle having integrally formed fingers for gripping and... | 12/21/1976 |
| 3997969 | Electric dry shaver An electric dry shaver is disclosed having an improved outer cutter which is rotatably repositionable or readily demountable by the user for cleaning hair debris from a hair chamber of the shaver.... | 12/21/1976 |
| 3991464 | Latch and release for a trimmer device in an electric dry shaver A trimmer device for an electric dry shaver is disclosed having a trimmer cutter assembly which is mounted for rotation between operative and inoperative positions on the shaver. The trimmer cutter is biased to an operative position. A latch and release f... | 11/16/1976 |
| 3979813 | Shaver assembly tool A cutter head assembling tool for use with an electric shaver having a cutter head of the type which includes inner and outer cutters, each of which is provided with hair shearing edges, and wherein the inner cutter is insertable into the outer cutter. Th... | 09/14/1976 |
| 3979228 | Battery operated appliance A battery operated appliance having a casing provided with output means and a compartment for positioning disposable batteries utilized as a source of power for the output means wherein closure means are provided for the compartment which include a hinged... | 09/07/1976 |
| 3946486 | Portable electrical shaver with pivotally mounted motor A portable electrical appliance such as an electric dry shaver wherein all the operative elements are mounted on a shroud support assembly for removal as an operative unit from the shaver casing. The support means further include a structural arrangement ... | 03/30/1976 |
| 3945118 | Shaver inner cutter A landless inner cutter having a body portion which is made from a single piece of metallic material such as a flat strip of sheet metal. The inner cutter has a body portion including a pair of longitudinal flanges provided with ledges which support a plu... | 03/23/1976 |
| 3945115 | Skin engaging means for an electric dry shaver An electric dry shaver having skin engaging bar assemblies arranged at opposite sides of the cutter head assembly for tensioning or flattening the skin in advance of the cutter head. Means are provided for mounting the bar assemblies for movement transver... | 03/23/1976 |
| 3934114 | Hair styling device having vapor generating means An electric hair curling iron having vapor generating means includes a handle portion having an elongated hair curling body extending from an end thereof. Stationary thermostatically controlled electric heating element and a movable heat conducting means ... | 01/20/1976 |
| 3931675 | Electric dry shaver with releasable cutter head An electric dry shaver wherein the cutter head assembly is held securely within a cutter head receptacle portion thereof by means which includes latch members on the cutter head in latching engagement with a detent spring on the bottom wall of the recepta... | 01/13/1976 |
