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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 |
| 4927188 | Fitting for connecting a drum to a pipeline A fitting for connecting a drum containing a fluid product to a pipeline leading to a place of use without introducing contaminant.... | 05/22/1990 |
| 4924626 | Device for automatically opening and closing a door A device for automatically opening and closing a door by turning the door through an angle of 90° from an open to a closed position and vice versa.... | 05/15/1990 |
| 4850747 | Trench box A trench box wherein there are spaced, parallel side wall panels between which there are spacer panels and wherein the upper longitudinal edges of the side wall panels and spacer panels are transversely inclined.... | 07/25/1989 |
| 4828233 | Bent wire spring module with lock A bent wire spring module embodying a clamp element at the upper end interengageable with the cross wire of a grid frame without requiring the formation of deviations in the cross wire to which it is attached.... | 05/09/1989 |
| 4826065 | Feeding means for feeding a machine web in a packaging machine A feeding means for feeding a material web in a packaging machine comprises feeding chains, sprocket wheels and an engagement element for feeding the feeding chains. In order to facilitate the insertion and clamping of the material web the engagement memb... | 05/02/1989 |
| 4825623 | Cyclically operable apparatus for forming and filing bags Apparatus for forming bags of predetermined length with a predetermined weight of product, the apparatus being provided with a vibrator for effecting vibration of a bag shaper and a sensor adjacent the bag shaper for determining when the product has subsi... | 05/02/1989 |
| 4815156 | Bedspread A bedspread with a panel attached to one end thereof to overlay pillows at the head of the bed, wherein the bedspread and the panel are provided with aligning tabs at the head end spaced apart a distance corresponding to the width of the mattress to thus ... | 03/28/1989 |
| 4813656 | Grid frame A grid frame for a spring assembly comprising a border wire transversely and longitudinally-crossing line wires, and spring wires disposed between adjacent line wires either transversely of the frame or longitudinally thereof.... | 03/21/1989 |
| 4805330 | Hanger for a wall covering A hanger for a flexible wall covering in the form of an elongate flexible strip adapted to be attached to a wall adjacent the ceiling, provided with elastically interengageable jaws normally standing apart to admit an edge of the wall covering and thereaf... | 02/21/1989 |
| 4802280 | Device for removing putty from a window A device for removing putty from a window frame in the form of an L-shaped blade and a support to which the blade is adjustably attached, the support being provided with a handle and guide by means of which the blade can be moved along the window frame ad... | 02/07/1989 |
| 4797102 | Instructional globe An instructional globe facilitates the guided or self-directed study of terrestrial geography. A globe-shaped body is constructed so that major geographical features are represented on detachable appendages. Cues are provided for the proper placement of t... | 01/10/1989 |
| 4796872 | Bent wire spring module A bent wire spring module provided with spirally-formed attaching elements at its upper end for interengagement with the border wires of a grid frame.... | 01/10/1989 |
| 4790647 | Examination unit An ophthalmologic examination unit comprises a chin rest (31) and a plurality of examination instruments (30, 59, 60) whose position can be laterally adjusted relative to the patient's eyes to be examined and which can be adjusted in elevation. The chin r... | 12/13/1988 |
| 4781360 | Spring assembly with helical coils of spring wire with unknotted ends A spring assembly wherein there is a rectangular border wire and there are coils disposed in spaced, parallel rows within the border wire. The coils in the rows of coils lap and are connected by helices of wire. The helices of wire connect the adjacent ro... | 11/01/1988 |
| 4781930 | Method of preparing a fish product A fish product comprising a fillet of fish coated with an edible oil sufficiently to provide surface penetration to the extent to prevent excretion of the juices and exclusion of air and further coated with an adhering layer of crumbs such as bread or cra... | 11/01/1988 |
| 4778157 | Spring module A spring module for disposition between a base frame and a grid frame of a spring assembly embodying upper and lower attaching elements for attachment to, respectively, the grid frame and the base frame and spaced, parallel, vertically-disposed, yieldable... | 10/18/1988 |
| 4776771 | Metering pump A self-aspirating and self-bleeding metering pump comprises a metering chamber having an inlet connected with a predelivery chamber and an outlet connected with a metering point. The predelivery chamber is connected with a metering agent tank through a su... | 10/11/1988 |
| 4764191 | Air filter An air filter for combustion engines used in motorized heavy equipment so structured as to be restored to full usage without replacement of the filter elements.... | 08/16/1988 |
| 4753059 | Packaging machine comprising printing means A packaging machine is provided having an intermittent foil advance with printing means. During the working cycle of the packaging machine the foil is passed through rotary type printing means for obtaining an improved printing format and generating large... | 06/28/1988 |
| 4747222 | High-pressure steam flatiron A flatiron is provided with a plane plate (2) onto which a heating coil (5), a tubular coil (8) as evaporator means, and a capillary tube-sensing element (15) in a tube (14) are soldered. The bottom of the tubular coil (8) is provided with bores (12) in a... | 05/31/1988 |
| 4745946 | Pipe separator A pipe separator (1) comprising a control valve (7) for actuating a sliding valve (4) is provided. In order to increase the service time of the sliding valve by avoiding an unnecessary switching frequency, a two positions-three directions directional valv... | 05/24/1988 |
| 4740073 | System for projecting three-dimensional images A system of three-dimensional projection comprising in combination a screen and a viewer, said viewer embodying a mask containing see-through slits, means for projecting at least two different perspectives on the screen and means for effecting movement of... | 04/26/1988 |
| 4739604 | Printing device for packaging machines In a packaging machine for packing in packages formed in a material web a printing means having type bars for printing on the material web reciprocally movable between a rest position having a distance from the material web and an operating position, and ... | 04/26/1988 |
| 4738540 | Mixer blender A blender wherein the fluids to be blended are compelled to flow through a bed of loosely-associated buoyant bodies.... | 04/19/1988 |
| 4736933 | Bent wire spring module A spring module for use in a spring assembly embodying a base frame and a grid frame comprising upper and lower attaching elements for connecting the module to the base frame and grid frame and a plurality of lower and upper symmetrically-disposed, yielda... | 04/12/1988 |
| 4729550 | Spring module A bent wire spring module wherein there are upper and lower attaching elements for attachment, respectively, to a grid frame and base frame and vertically-disposed, spaced, parallel legs connecting the upper and lower attaching elements, each leg comprisi... | 03/08/1988 |
| 4725187 | Excavator An excavator for use in tunneling operations wherein there is minimal head room, comprising a boom mounted to a mobile carriage for rectilinear movement in a horizontal plane and angular movement in a vertical plane. A rigid arm is pivotally mounted at on... | 02/16/1988 |
| 4723380 | Ophthalmologic examination unit An examination unit which is particularly suitable as an ophthalmologic examination unit for the examination of a patient by an ophthalmologist, comprises a storage region for an examination apparatus, wherein the storage region is defined by a wall, and ... | 02/09/1988 |
| 4721290 | Bent wire spring unit A bent wire soring unit for disposition between a base frame and grid frame disposed in spaced, parallel relation to each other includes a lower attaching element for attachment to the base frame and an upper attaching element for attachment to the grid f... | 01/26/1988 |
| 4718217 | Settling systems for bag-in-box machines Apparatus for packaging particulate product in bags for deposit into cartons of predetermined cross section and height.... | 01/12/1988 |
| 4715527 | Ultrasonically sealed side seam on cup A container comprising a tubular body part having a longitudinal lapped side seam and a bottom part attached to one end thereof, characterized in that the overlapping portions of the side seam are adhered by ultrasonic bonding to provide a bonded area lon... | 12/29/1987 |
| 4715495 | Disposal kit A disposable kit for picking up animal litter in the form of a foldable paper bag secured at one side to a stiff paperboard panel such as to stiffen the side and, hence, enable firmly holding the open end of the bag engaged with the surface from which the... | 12/29/1987 |
| 4714152 | Accumulator Apparatus comprising an accumulator for temporarily storing articles being transferred by a conveyor from one operation to another in the event that there is blockage of the articles at the discharge end of the conveyor and for restoring the articles to t... | 12/22/1987 |
| 4705626 | Magnetic oil filter module A filter module for removing metallic sludge from lubricating oil used in automobile engine crankcases and transmissions embodying permanent magnets for intercepting and retaining magnetizable sludge and a filter cloth for intercepting and retaining non-m... | 11/10/1987 |
| 4693675 | Non-throttling discharge pump A discharge pump for expelling fluid from a container comprising a pump chamber, aligned plungers disposed in said pump chamber movable in reciprocation therein and in unison and relative to each other to alternately trap a charge of fluid therebetween, i... | 09/15/1987 |
| 4685659 | Spring unit A bent wire spring unit for interposition between a grid frame and base frame comprising upper and lower attaching elements and intervening spaced, parallel, oppositely-facing supports comprising vertical lengths of wire and at the upper and lower ends of... | 08/11/1987 |
| 4684111 | Bent wire spring module A spring module for use in a spring assembly embodying a base frame and a grid frame comprising lower and upper attaching elements for connecting the module to the base frame and grid frame and a plurality of lower and upper symmetrically-disposed, legs y... | 08/04/1987 |
| 4682448 | Shelter A shelter for interior use within living space, office space or working space defining an enclosure extending from the floor to the ceiling and providing access through a ceiling opening for above-ceiling construction and/or repair while containing debris... | 07/28/1987 |
| 4677772 | Excavator with extensible boom An excavator comprising a beam pivotally supported at its proximal end to the platform of a mobile support for movement about a horizontal axis, telescopically interengaged upper and lower arms at the distal end of the beam, an excavator pivotally mounted... | 07/07/1987 |
| 4676016 | Hanger for a wall covering A hanger for a flexible wall covering in the form of an elongate flexible strip adapted to be attached to a wall adjacent the ceiling, provided with elastically interengageable jaws normally standing apart to admit an edge of the wall covering and thereaf... | 06/30/1987 |
