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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 4245357 | Curved glove construction A curved gunn-cut glove construction wherein the fingers of the glove curve inwardly towards the palm portion of the glove to conform to the configuration of a hand when in a relaxed state. The palm piece of the glove including the front portions of the f... | 01/20/1981 |
| 4245358 | Nontraumatic prosthetic valve with magnetic closure An improved valve prosthesis for causing nontraumatic unidirectional flow of a pulsatory fluid, such as blood, through a conduit, such as a blood vessel. The valve includes two flaps, made of a suitable flexible material, attached by the proximal ends to ... | 01/20/1981 |
| 4245359 | Plug for openings produced by operative procedures in medullated bones The plug is made of a plastics material and acts as a cement barrier for openings produced by an operative procedure in medullated bones. The plug is clamped between the side walls of the opening of the bone by means of elastic flanges and prevents the bo... | 01/20/1981 |
| 4245360 | Partial pelvic prosthesis A partial pelvic prosthesis comprising an implant piece (1) corresponding to that part of the pelvis to be resected, the piece (1) having a receiving space (2) for the acetabular fossa and connecting bores (8), and recess (15) for connecting prosthetic el... | 01/20/1981 |
| 4245361 | Water bed mattress A water bed mattress having a sealed liquid enclosure containing a relatively stiff peripheral cushion of foam plus a resilient open-cell filling within a central cavity.... | 01/20/1981 |
| 4245362 | Flotation mattress Disclosed is a flotation mattress comprising (a) a planar, flexible bag (10) adapted to hold water during use of the mattress, (b) a hollow, annular compartment (12) surrounding the bag (10) in the plane of the bag, the compartment (12) being collapsible ... | 01/20/1981 |
| 4245363 | Flotation mattress Disclosed is a flotation mattress comprising (a) a planar, flexible bag (10) adapted to hold water during use of the mattress, (b) a hollow, annular compartment (12) surrounding the bag (10) in the plane of the bag, the compartment (12) being collapsible ... | 01/20/1981 |
| 4245364 | Waterbed safety liner An improved waterbed safety liner includes a base sheet which underlays the watermattress, and sidewalls extending upwardly from the edges of the base sheet to surround the watermattress and contain any liquid leaking therefrom. In one embodiment, an infl... | 01/20/1981 |
| 4245365 | Fitted top contour sheet A fitted top contour sheet having an end pocket receiving the rear of a mattress and pairs of hooks and eyes to secure the bottom of the pocket to the mattress.... | 01/20/1981 |
| 4245366 | Rotary wire brushes The invention consists of a wire brush having two sections extending along a common axis, one section having wires extending radially from said axis, and another section adjacent said first section having wires extending radially from an axis perpendicula... | 01/20/1981 |
| 4245367 | Dip stick wiper The present dip stick wiper has a holder ring supporting an absorbent foam pad which has a plurality of slits, each capable of slidably passing an oil dip stick with wiping engagement of the pad against the opposite faces of the dip stick. The slits make ... | 01/20/1981 |
| 4245368 | Dust mop A dust mop assembly including an upper mop head which has formed in its lower surface a continuous, peripheral, downwardly open groove. A retainer ring inserts upwardly into the groove and medially secures therewithin a plurality of yarns of suitable size... | 01/20/1981 |
| 4245369 | Straight sweep windshield wiper An apparatus for driving a windshield wiper blade in an oscillatory motion over the surface of a windshield. The wiper blade is driven in a straight line over the windshield surface rather than in the usual arcuate or modified arcuate path.... | 01/20/1981 |
| 4245370 | Control circuit for protecting vacuum cleaner motor from jammed beater brush damage A control circuit for effectively preventing damage to the blower or fan motor of a vacuum cleaner which could otherwise result from a jammed condition of the beater brush thereof. The control circuit effects discontinuation of the energization of the mot... | 01/20/1981 |
| 4245371 | Carpet scrubber An improved carpet cleaning machine which incorporates controls to allow it to be employed as either a carpet scrubber or a vacuum cleaner. The carpet cleaning machine incorporates a novel handle arrangement which can be collapsed for storage and handling... | 01/20/1981 |
| 4245372 | Apparatus for processing of poultry A device is provided for severing tails of poultry from their bodies having an infeed guide pivotally mounted with a support member, the infeed guide comprising a one piece unit which has opposed guide members having a slotted opening for receipt of the t... | 01/20/1981 |
| 4245373 | Process equiment for preparing beef for use on a vertical rotisserie The invention is an improved process and process equipment for preparing beef for cooking, particularly for cooking on a vertical rotisserie. The process is a step-by-step procedure for preparation of the beef. The process uses special process equipment o... | 01/20/1981 |
| 4245374 | Connector A connector formed of flexible plastic has a female socket at one end of an elongated flexible connection rod provided with two pivotal lock lugs positioned to face each other within a locking aperture and a male inserting head and a stopper at its opposi... | 01/20/1981 |
| 4245375 | Sheet-connecting structure Stringers of a slide fastener are attached to the connecting edges of a sheet for opening and closing thereof and a tightening device is disposed in an intermediate portion of the sheet along the lengthwise direction of the fastener stringers so that the ... | 01/20/1981 |
| 4245376 | Lock for safety belts A lock for safety belts having a lock housing secured to a surface of a vehicle and an inner housing slideably located in the lock housing and held therein by spring tension. The lock is also provided with a latch tongue, insertable into the inner housing... | 01/20/1981 |
| 4245377 | Jewelry chain clasp A jewelry chain clasp is provided which is comprised of two unitary pieces which may be attached directly to the terminated ends of a jewelry chain. The two pieces include a spring catch arranged to be received within a receptacle which may be provided wi... | 01/20/1981 |
| 4245378 | Air jet for interlacing multifilament yarn Air jets are normally designed for interlacing a particular size or type of multifilament yarns and are not normally designed for universal use in interlacing different types and sizes of yarns. The present interlacing air jet is provided with a rotationa... | 01/20/1981 |
| 4245379 | Method of fabrication of flat grids of pyrolitic graphite for electron tubes A flat grid of pyrolytic graphite is obtained by cutting a disc from a cylindrical blank followed by deformation under pressure and by means of a partial vacuum. The grid is then machined and stretched within a stressing frame which also serves to mount t... | 01/20/1981 |
| 4245380 | Multiple heat pipe heat exchanger and method for making A heat pipe heat exchanger has a plurality of heat pipes which are interconnected so as to permit fluid communication between the pipes at least during charging so that the heat pipes may be simultaneously filled with heat transfer fluid.... | 01/20/1981 |
| 4245381 | Tension control of fasteners There is disclosed a technique for tightening threaded fasteners in which values of offset torque, initial tension rate relative to angle, final tension rate relative to angle and other joint related factors are empirically determined by instrumenting a p... | 01/20/1981 |
| 4245382 | Tension control of fasteners There is disclosed a technique for tightening threaded fasteners in which values of offset torque, initial tension rate relative to angle, final tension rate relative to angle and other joint related factors are empirically determined by instrumenting a p... | 01/20/1981 |
| 4245383 | Centrifugal processing apparatus with reduced-load tubing Centrifugal processing apparatus in which a processing chamber is rotatably mounted with respect to a stationary base. An umbilical cable segment is fixed at one end substantially along the axis of the processing chamber at one side thereof, with the othe... | 01/20/1981 |
| 4245384 | Method of making heat-insulated structural section assemblies This invention relates to methods and apparatus for making heat-insulated structural section assemblies for use in window and door frames, and the like. The structural section assemblies consist of two structural metal sections transversely connected to e... | 01/20/1981 |
| 4245385 | Radial lead component insertion machine Under direction of a machine controller, a traversing shuttle automatically selects one component among a plurality of radially leaded components stored on continuous component belts, centers the component, shears the selected component from the belt, and... | 01/20/1981 |
| 4245386 | Method of manufacturing a solar cell battery Solar cells are constructed as a plurality of spaced strips formed along the length of synthetic foils. They are connected in series along their entire length in a simple manner. Therefore, the connections are formed by means of vapor-deposited metal laye... | 01/20/1981 |
| 4245387 | Cable harness assembly fixture A cable harness assembly fixture having a crimping station and an elongate base plate movable with respect to the crimping station. A pair of spaced, parallel, locator support rails on the base plate are movable transversely of the base plate to vary the ... | 01/20/1981 |
| 4245388 | Safety razor The specific disclosure provides a safety razor comprising a cap member having a planar skin abutting upper surface defining a first plane for guiding the shaver over skin surfaces while shaving. A blade has a cutting edge at one end thereof in a second p... | 01/20/1981 |
| 4245389 | Safety razor A razor including a grip portion and a head portion, the head portion including a base portion extending transversely of the grip portion and a cap portion overlying and spaced from the base portion to form a cavity therebetween adapted to receive a shavi... | 01/20/1981 |
| 4245390 | Scoring attachment for power saws A scoring device for attachment to a shoe plate of a power hand saw includes a mounting structure having an elongate base member with opposite ends engageable in spaced saw rip guide brackets for extending transversely on the shoe plate forwardly of the s... | 01/20/1981 |
| 4245391 | Golf club adjustment apparatus A golf club adjusting apparatus for modifying the relationship of the club shaft and head which includes a base for supporting the club at spaced first and second preselected positions. A force applying element positioned intermediate the first and second... | 01/20/1981 |
| 4245392 | Device for measuring and adjusting the lie and face of golf club A device for measuring and adjusting the angle of lie and face angle of a golf club including a club head supporting base with a reference surface for supporting the sole of a golf club. A measuring element is indexed to the reference surface to contact t... | 01/20/1981 |
| 4245393 | Instant position finder and course plotter The present invention is directed to an instant position finder and course plotter. A first embodiment of the present invention relates to a three arm protractor which includes a circular base member, a fixed central arm and a movable left and right arm. ... | 01/20/1981 |
| 4245394 | Clamping device for straight edge A clamping device for clamping a straight edge to a board to hold such straight edge in place during use thereof. Two clamping members are moveably interconnected to opposite ends of a shaft which extends through an aperture in a bearing member. The beari... | 01/20/1981 |
| 4245395 | Fluidized bed drying The invention resides in one embodiment in a multiple effect method of and apparatus for drying a solid material containing a vaporizable material which comprises establishing at least first and second fluidized beds containing the solid material in which... | 01/20/1981 |
| 4245396 | Process for drying and granulating sewage sludge A process for drying and granulating sewage sludge. Wet sewage sludge is at least partially dried in a thermal drying zone, which preferably is a toroidal dryer. A plasticizer is added to the dried sludge and the resultant mixture is extruded to form fert... | 01/20/1981 |
