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| Number | Title | Issue Date |
| 4247997 | Trench excavating and shoring apparatus A ditch-digging or trenching machine has a plurality of wall-engaging spreadable and retractable members which can be received in the trench to be advanced and provided with respective fluid-powered cylinders connectible to a cutting head for advancing th... | 02/03/1981 |
| 4247998 | Machine embroidery hoop A pair of embroidery hoops especially adapted to be used with a sewing machine including an inner hoop of fixed diameter and an outer hoop composed of substantially quadrantly related, arcuate hoop segments adjustably interconnected by circumferentially a... | 02/03/1981 |
| 4247999 | Means for storing and indexing microfiche A novel type of preprinted index strip is disclosed for use in microfiche storage panels and similar devices of the type adapted to hold and display index strips along one edge. This new type of index strip greatly expands the choice of identification sym... | 02/03/1981 |
| 4248000 | Receptacle to transport and display an artist's framed canvas An enclosed device for the safe transport of an artist's freshly painted framed canvas immediately after paint has been applied to the surface of the canvas and before the paint has undergone drying by any natural or artificial means, which device protect... | 02/03/1981 |
| 4248001 | Portable sign display device Two supporting elements of a stand for a display panel can either be opened-out and placed on the ground in the service position or folded-back when not in use. The ends of the two supporting elements are associated with a pivot on each side of the panel ... | 02/03/1981 |
| 4248002 | Downrigger system An elongated downrigger system having a relatively long extension arm for safely positioning the downrigger lines far from the propeller and hull of a boat. The elongated downrigger system is equipped with a movable carriage assembly to permit the weighte... | 02/03/1981 |
| 4248003 | Live fish bait attacher A fishing device or live fish bait attacher having an inner core with a vertical slit for holding a fish hook in a rigid upright position in conjunction with a cylindrical flanged sleeve and an outer cylindrical shell for holding the live bait in a horizo... | 02/03/1981 |
| 4248004 | Fishing rig holder A fishing rig holder comprises three panel members foldably connected with ends of the first and third panels connected to the second panel. In folding, the second and third panels swing down and around the first panel. In a folded condition, the panels a... | 02/03/1981 |
| 4248005 | Electronic insect killer An electronic insect killer has spaced electrodes adapted to be electrically contacted by bodies of insects, said electrodes surrounding fluorescent lamps which attract the insects toward the electrodes. Interconnected with the electrodes and the fluoresc... | 02/03/1981 |
| 4248006 | Reconfigurable moving animal simulating toy A toy having an upper and a lower body section is disclosed. The lower body section is operatively attachable to the upper body section in a plurality of configurations. A container capable of holding a liquid is included in the upper body section. A comp... | 02/03/1981 |
| 4248007 | Flying toy A toss-type flying toy has at least one tubular aerodynamic member positioned adjacent the plane of a mid fuselage planar generally circular horizontal wing. The flying toy also includes a forwardly positioned horizontal circular lifter, upper and lower v... | 02/03/1981 |
| 4248008 | Balloon ejecting device A pistol-like device for ejecting toy balloons is provided which rapidly spins an inflated balloon and then releases the balloon while it is still spinning. The device thereby provides a spin stabilization to the balloon which causes the balloon to follow... | 02/03/1981 |
| 4248009 | Toy motor vehicle A toy motor vehicle includes a body supported by wheels for rolling movement over a supporting surface. The body is provided with a first compartment having a transparent wall segment and a second compartment in communication therewith having opaque walls... | 02/03/1981 |
| 4248010 | Illuminated disc-type throwing toy A disc-type throwing toy generally in the form of a flying saucer which is constructed and illuminated in such a manner to facilitate use of the device at night with the illumination features including peripheral light emitting devices as well as aperture... | 02/03/1981 |
| 4248011 | Self-operative steering for radio-controlled model car A self-operative steering for radio-controlled model car per se operative corresponding to radio-controlling signals transmitted from a controller of the model car. The steering comprises a housing containing a servomechanism therein, a pair of wheel-shaf... | 02/03/1981 |
| 4248012 | Lane changing car A miniature toy steerable car uses the selective direction of rotation of the motor to effectively steer the front wheels of the vehicle. A reversible motor selectively drives one of a pair of rear wheels by means of a gear arrangement and one-way drive m... | 02/03/1981 |
| 4248013 | Hydroponic bedding tray apparatus A hydroponic bedding tray and nutrient feeding apparatus is disclosed which is particularly advantageous for outdoor use wherein trough means in fluid communication with a nutrient mixing reservoir are formed below a bottom floor of the bedding tray so th... | 02/03/1981 |
| 4248014 | Seedling containers A container assembly including a plurality of cell like compartments pivotally joined together to form a chain, the compartments including spacer members extending on opposite sides of each compartment, said spacer members including joining members adapte... | 02/03/1981 |
| 4248015 | Multi-pane glazed door defrosting system Apparatus is described for decreasing the frost-free recapture time of a multi-pane glazed door such as is used on refrigerated display cabinets, by selectively heating the innermost pane when it is exposed to high relative humidity conditions. An electri... | 02/03/1981 |
| 4248016 | Integral unit comprising a raisable and tiltable door panel member and a frame structure therefor containing the driving mechanism An integral unit is provided comprising a raisable and tiltable door panel member and a frame structure therefor containing the driving mechanism. All the components of the driving mechanism are not only contained within the door frame member, but are als... | 02/03/1981 |
| 4248017 | Removable stretch gasket for oven door An oven door stretch gasket which comprises an extruded length of silicone rubber having a relatively short hooked metal insert adhered to the interior of the ends thereof. The insert is adhered by means of room temperature vulcanizing silicone rubber cem... | 02/03/1981 |
| 4248018 | Plastic multiple track window with slideable and removeable panes, and elements thereof A multiple track window, preferably with extruded plastic framing and glazing sealing strips, is described. Glazing panels are releaseably held and slideable for opening within side framing channels which are formed by releaseably interlocking members whi... | 02/03/1981 |
| 4248019 | Workpiece conditioning grinder control system An elongated metal workpiece such as a slab or billet is moved longitudinally beneath a grinding head by a reciprocating car mounted on an elongated track. The grinding head includes a rotating grinding wheel mounted at the end of a first arm which is piv... | 02/03/1981 |
| 4248020 | Precast concrete stairway module A precast concrete stairway module comprising a concrete wall assembly which is C-shaped in plan view, providing a side wall and two end walls, a concrete stair flight extending from an edge of one side wall to a mid-height position of the other side wall... | 02/03/1981 |
| 4248021 | Support means for wall or roof structure A roof or wall structure incorporating support assemblies of this invention is disclosed. The roof or wall structure comprises an inner sheath secured to plural spaced-apart purlins or girts; an outer sheath; plural spaced-apart support means each assembl... | 02/03/1981 |
| 4248022 | Exterior window shutter assembly A shutter assembly for use on an exterior wall surface at a window opening or the like, the shutter assembly consisting of a frame and a panel formed of an expanded metal sheet, the expanded metal sheet being provided with a plurality of air vent defining... | 02/03/1981 |
| 4248023 | Insulated ceramic fiber refractory module This invention relates to a modular insulating article for insulating the interior of a high temperature furnace. The article comprises an outer shell-like form made of a ceramic fiber blanket, and interior layers made of ceramic fiber blanket material. T... | 02/03/1981 |
| 4248024 | Centering for casting concrete roofs A centering for casting concrete roofs comprising a rectangular steel construction including at least two longitudinal girders (1, 2) and a plurality of spaced cross beams (3) welded thereto constituting a support of a flat form board for casting. Accordi... | 02/03/1981 |
| 4248025 | Knock down pole construction A knock down tapered pole for a power-line wherein the pole is comprised of a series of superimposed pole sections with each section including a series of U-shaped bent-corner plates of uniform cross-sectional thickness and a plurality of trapezoidal-shap... | 02/03/1981 |
| 4248026 | Trolley for installing prefabricated building panels A trolley for aiding in the installation of sidewall panels to the eave struts and purlins of prefabricated metal buildings. The trolley has a seat support member with foot stirrups for carrying a workman and a pair of wheel carrying brackets secured to o... | 02/03/1981 |
| 4248027 | Apparatus for filling containers Apparatus for filling containers with articles. A feed conveyor of slats having article receiving apertures is supplied with articles from a chute or a vibratory hopper. A tray below the slats prevents articles falling through until a discharge point is reache... | 02/03/1981 |
| 4248028 | Grid for guiding receptacles and seizing head equipped with such a grid This invention essentially relates to a grid for guiding bottles advancing towards compartments of a packing case. The grid has vertically fastened thereto supports each including a sleeve containing axial-push means together with a rod cooperating therew... | 02/03/1981 |
| 4248029 | Case packer loading device A grid set for use on an article loading machine for guiding cartons of articles such as drinks into a case carried therebelow. A plurality of guide arms are pivotally carried in a rectangular frame directly below a drop assembly for guiding the cartons o... | 02/03/1981 |
| 4248030 | Method for assembling plastic sleeve preforms and containers This invention relates to a method for producing a composite container having a body label or tubular sleeve mounted thereon adapted to be shrunken onto exterior surface areas of a cylindrical container. The tubular sleeve is preformed of thin flexible th... | 02/03/1981 |
| 4248031 | Stretch wrap machine There is disclosed a machine for wrapping a skid-supported load with stretch wrap film. A roll of film is moved up and then down, at the same time that the turntable which carries the load to be wrapped rotates on its axis. The film is thus wound around t... | 02/03/1981 |
| 4248032 | Bagging apparatus An apparatus for inserting a carton into a thermoplastic bag includes a table for supporting the bag, a pusher assembly for transferring a carton into the bag, and a guide assembly for first opening the bag mouth and for thereafter guiding the carton into... | 02/03/1981 |
| 4248033 | Thru-flow aquatic harvester Aquatic harvesting apparatus employs a harvesting barge with vertical and horizontal weed cutters and a tunnel extending from the cutting throat through the entire length of the harvesting barge for discharge of the cut weeds into a collection container c... | 02/03/1981 |
| 4248034 | Adjustable axle support system for lawn mower An adjustable axle support system for a lawn mower for supporting the whe and blade housing at a preselectable elevation in accordance with a desired cutting height of the grass cutting blade which is rotatable in a horizontal plane within the blade hous... | 02/03/1981 |
| 4248035 | Apparatus and method used in the assembly of fibre optic cables An optical cable is assembled by laying up optical fibres around the surface of a central strength filament. To minimize longitudinal tension in the fibres, air is directed along the surface of the cable in a feed direction. A blow-pipe type device has a ... | 02/03/1981 |
| 4248036 | Bulky yarn A bulky continuous filament yarn, in which continuous filament core yarns of polymeric material are substantially straight and free from loops and comprise from about 65 to about 93 percent of the total filaments by weight while the remainder of the total... | 02/03/1981 |
