In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 4918752 | Helmet with detachable front section A helmet, particularly an aircrew helmet, has a rear part (10) and a front part (12). The rear part (10) includes a shell shaped to extend partially over the top of the wearer's head and to each side of the head. The front part (12) is shaped to fit again... | 04/24/1990 |
| 4918753 | Adjustable fastening for securing goggles to a helmet This invention relates to a fastener for securing goggles tightly to a motor-cyclist's helmet. The fastener comprises a support 4 fixed to each side of the helmet, beside the face aperture, a removable stud-piece 5 having an off-center mushroom-headed stu... | 04/24/1990 |
| 4918754 | Flocked glove and plastic sleeve member bonded thereto A preformed flock lined rubber-like glove has its cuff folded back to expose the flocked lining and is mounted in a rotating support. A spray nozzle deposits a band of the hot-melt adhesive on the flocked lining of the exposed and rotating cuff. The hot-m... | 04/24/1990 |
| 4918755 | Disposable glove or mitt for self-service gasoline and frozen food handler A glove made of a sheet of foamed plastic bubbles of random sizes filled with air with the largest bubbles being of diameter much less than finger width which provides a cushioned gripping and thermal insulation useful im pumping self-service gasoline and... | 04/24/1990 |
| 4918756 | Waterproof firefighter's glove A firefighter's glove which is waterproof. The glove has a plurality of layers. One of the layers is of waterproof material. The waterproof layer is attached to a thermal barrier layer which is within the waterproof layer. A sealing piece covers the attac... | 04/24/1990 |
| 4918757 | Hearing aid headband support In a hearing aid support, an elongated adjustable headband surrounds the head from the forehead hairline in the vicinity of the ears to the nape of the neck. Strip forming slits in the headband at the predetermined position of the skull bone support a bon... | 04/24/1990 |
| 4918758 | Changeable message stretch band A changeable message stretch band is disclosed which allows the wearer to communicate words and expressions, particularly thoughts and/or feelings, via the use of removably attached graphics, including letters, numerals, designs and the like, in any combi... | 04/24/1990 |
| 4918759 | Timekeeping cap A timekeeping cap includes a crown portion which may be placed and worn on the head of a human, a visor portion which extends from the crown portion for shade and which has a cavity which opens to the lower surface of the visor portion, and a clock which ... | 04/24/1990 |
| 4918760 | Firefighter's trousers capable of receiving a booted foot Firefighter's trousers which can be donned by a firefighter wearing boots or the like. The trousers have a pair of leg portions. Each of the leg portions has sections which are separated before the trousers are donned. Then after the trousers are donned t... | 04/24/1990 |
| 4918761 | Method of using a toilet-flange cast-in mount A method of using a toilet-flange cast-in mount (10) that has a bottom end portion (16) which is of a female pipe coupling size for coupling with a three inch pipe (24) and a top end portion (18) of a four inch pipe size. The toilet-flange cast-in mount h... | 04/24/1990 |
| 4918762 | Double-urinal flushing apparatus and method for automatic operation The conductivity of the flushing water in the two siphons is measured by means of two electrodes (16, 17, 18, 19) in each siphon. Whenever the conductivity exceeds a predetermined limit, the flushing operation is triggered after a delay time predetermined... | 04/24/1990 |
| 4918763 | Water closet with supplemented rim wash water flow A water closet is disclosed having a bowl with rim wash outlets and a tank connected thereto containing flushing water at a level where most of the water will not flow by gravity through the bowl rim outlets. A tank water withdrawing device is mounted in ... | 04/24/1990 |
| 4918764 | Electrically operated toilet An electrically operated toilet wherein a toilet bowl is coupled to an electrically operated water valve which selectively flows water into the toilet bowl. An electrically operated waste valve is coupled to the discharge opening of the toilet bowl for se... | 04/24/1990 |
| 4918765 | Portable toilet cabana A portable toilet cabana is formed of four, wide, relatively resilient sheet plastic walls whose adjacent vertical edges are connected together by narrow sheet plastic panels that are roughly a quarter of the width of the walls to form an octagon-like enc... | 04/24/1990 |
| 4918766 | Hydrotherapy exercising device with scissor lift treadmill An apparatus for exercising and massaging a human, a horse or other animal comprises a tank containing a pool of water, a plurality of water massage jets in the sidewalls of the tank, a cage for retaining the person, horse or animal, a treadmill positione... | 04/24/1990 |
| 4918767 | Shampoo chair and bowl apparatus A shampoo chair and bowl apparatus in which the shampoo bowl is mounted with a neck rest at a fixed elevation, and a shampoo chair is mounted for adjustment along a linear guide path inclined upwardly and rearwardly toward the shampoo bowl between a lower... | 04/24/1990 |
| 4918768 | Air valve for spas and baths An air valve for controlling the supply of air to a venturi jet of a spa includes a housing, a cylindrical barrel, means for sealing between the housing and the barrel, and means for rotating the barrel. The housing has an interior chamber extending betwe... | 04/24/1990 |
| 4918769 | Flush tank for a water closet having self contained washing means A flush tank, having a vertically extending wall positioned between the two vertical side walls to provide a first chamber which is filled with flush water and a second chamber which houses a removable washing means, is disclosed. The washing means is ope... | 04/24/1990 |
| 4918770 | Sofa bed with closing and opening assist A sofa bed having a foldable bed frame including a main section, center section and front section which are coplanar with one another when the frame is in the bed configuration. A mattress is supported by the foldable frame and folds with it when the bed ... | 04/24/1990 |
| 4918771 | Patient lifting and hoist therefor A novel method of lifting a patient from a seated to a generally standing position employs a hoist comprising a support column mounted on a mobile chassis. A pivotal lifting arm arrangement projects from the column and presents laterally spaced attachment... | 04/24/1990 |
| 4918772 | Folding sleeper shell A sleeping facility of greatly improved operational simplicity and esthetically pleasing design for attachment to or incorporation in the side of a pickup truck topper, van, motor home or mobile home, which takes up no internal space in the vehicle, yet p... | 04/24/1990 |
| 4918773 | Posturized spring bedding product A spring interior comprising a plurality of longitudinally extending bands of springs disposed side by side and connected together by helical lacing wires in the top and bottom faces of the bands. Each band of springs comprises a single length of wire for... | 04/24/1990 |
| 4918774 | Medical support pillow The present invention provides a medical support pillow for automatically aligning the oropharyngeal, laryngeal and tracheal axes of the human head for airway management. The support pillow includes a head support and a neck support which are dimensioned ... | 04/24/1990 |
| 4918775 | Portable safety device combination for outdoor use A portable safety device for outdoor use comprising: a first shell and a second shell; two grooves respectively disposed in the first and second shells; a switch disposed on the first shell and exposed to the outer environment of the first shell; first an... | 04/24/1990 |
| 4918776 | Method of manufacturing shoes and insole part A method of making shoes of the type having a soft sole and an insole part used in the method. The insole part is produced by cementing a thin and soft insole sheet on a hard insole base so as to be easily peeled apart an separated. The method includes us... | 04/24/1990 |
| 4918777 | Slab-stem unit forming a trafficway The present invention relates to interlocking construction elements useful in being assembled into load bearing traffic ways. The present construction elements are comprised of a flat top slab and at least one support stem attached perpendicularly to bott... | 04/24/1990 |
| 4918778 | Endless rotary band cleaning device, particularly for cleaning a conveyor belt or supporting surfaces of objects The invention provides an endless rotary band cleaning device comprising an endless cleaning band mounted on three rollers disposed parallel to each other, namely: a drive roller, a guide roller and a secondary roller disposed in the space between the oth... | 04/24/1990 |
| 4918779 | Foot spraying and cleaning device Disclosed is an improved foot spraying and cleaning device which includes a pair of opposed facing brushes, each of which has embedded therein an elongated bar having a plurality of fluid outlets therein, with the outlets of the respective bars facing one... | 04/24/1990 |
| 4918780 | Wiper arm assembly for motor vehicles The wiper arm assembly according to the invention comprises a mounting head (1) rigidly secured to a drive shaft (A-B), a channel (2) rotatably connected to the mounting head (1), spring means (4) capable of biasing the channel (2) towards the surface to ... | 04/24/1990 |
| 4918781 | Hand vacuum cleaner A hand vacuum cleaner is provided comprising a lightweight motor housing containing a revolving brush. A bag assembly is selectively separable from the housing and is sealable to the housing with an elastomeric retaining ring including a sealing and retai... | 04/24/1990 |
| 4918782 | Carpet fastener A fastener for securing carpet in place on the treads of staircases or elsewhere includes an anchor member having a boss at one end which extends out of the carpet and a relatively thin flat arm which extends under the carpet and which is fastened to the ... | 04/24/1990 |
| 4918783 | Adjustable wheel structure An improved adjustable wheel structure mainly adapted for use in a trailing vehicle on which a yacht, boat or motorcycle can be mounted for transportation; the present wheel structure is provided with a special nut member having its inner surface half thr... | 04/24/1990 |
| 4918784 | T-handle turner A turner device for T-handles, especially for the types of T-handles employed in soft drink dispenser machines. The T-handle herein is in the form of a crank, having an eccentrically mounted rotatable handle and being provided with a principal hollow body... | 04/24/1990 |
| 4918785 | Mechanical knot for ropes The mechanical knot for ropes is a device to replace the time-honored metal hook and the conventional knots now used on tow and hoist ropes, and also tethering ropes. The device comprises a length of pipe or tube with an elongated slotted portion or porti... | 04/24/1990 |
| 4918786 | Hinge with leaves which reinforce one another against bending deflection A hinge having at least three leaves pivotally joined along edges of the leaves and adapted for attachment to two members to be pivotally connected with at least one member secured to a pair of the leaves which are mutally inclined in such a way that each... | 04/24/1990 |
| 4918787 | Poultry lung extractor and neck breaker Previously eviscerated birds are moved on an overhead conveyor in series to the lung extractor and neck breaker, with each bird moving into a poultry processing module (31). The lung extractor tube (48) moves downwardly to engage the lungs and the viscera... | 04/24/1990 |
| 4918788 | Process and apparatus for recovering meat from carcase sections in particular severed animal heads A continuous process for recovering meat from a plurality of carcase sections in particular severed animal heads (11) is provided, which comprises mounting the parts on a conveyor (1), advancing them past a number of work stations, at each of which either... | 04/24/1990 |
| 4918789 | Tripod clip A clip with triangular cross section is a paper clip provided with a step, which is vertical to the planes formed by the clip wire, at the narrower end of the U-shaped clip wire such that two planes constructed by the U-shaped clip wire are formed by the ... | 04/24/1990 |
| 4918790 | Cam buckle A cam buckle for adjustably securing a strip of web-like material includes a pair of side walls having front and rear ends, a top wall extending between the side walls, a first bar extending between the side walls below the top wall and a second bar slida... | 04/24/1990 |
| 4918791 | Clothing button guard A guard which encloses clothing buttons during cleaning operations. The guard includes a cup-shaped container with a slot which allows the guard to slide over the button. A cap may be releasably secured to the container to completely enclose the button an... | 04/24/1990 |