Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 4871025 | Levelling machine An improved ground levelling machine (10) for levelling small areas of ground comprising a main frame (11), a pivotal sub-frame (15) trailing said main frame (11) and pivotally connected thereto, a scraper blade (40) carried by the main frame (11), a hopp... | 10/03/1989 |
| 4871363 | Corrective intraocular lens Corrective intraocular lens for use with an intact natural eye lens, by insertion through an incision into the eye and implantation therein in spaced relation to the natural lens, including a lens body having a pair of opposed haptics constituting a first... | 10/03/1989 |
| 4866412 | Tactile sensor device A tactile sensor device, of value in a sensor system for identifying an object by contact, in the form of a first array of parallel elongated lengths of electroconductive material, a second array of parallel elongated lengths of electroconductive material... | 09/12/1989 |
| 4854577 | Exercise means An hydraulic device is used for an exercise machine, having a double-acting hydraulic pump, which can be moved in one direction for developing one set of muscles (for example, biceps), and in the other direction for developing another set of muscles (for ... | 08/08/1989 |
| 4842023 | Flexible hose A flexible hose comprises a flexible helically convoluted plastics material tube 12 wound helically with a reinforcing profile strip 14. The strip 14 is of such a cross-section as to support the tube wall and limit the maximum radius of curvature R2 at ma... | 06/27/1989 |
| 4838905 | Filter element and method of making a filter element A filter element comprises a relatively rigid fluid-permeable cylinder (5), around which is provided a body (7) of non-woven fibrous filter material. A jacket (6) of permeable material is positioned around the outer surface of the filter material, and is ... | 06/13/1989 |
| 4833890 | Bipartite intraocular lens Bipartite intraocular lens, insertable in temporarily contracted condition through a minimum size incision into the eye for implantation therein, including a haptic containing oblong lens body coactively mounted in a ring shaped, partially contractible, d... | 05/30/1989 |
| 4829891 | Rice grain humidifying apparatus In an apparatus for humidifying rice grains, a humidifying vessel has defined therewithin a substantially closed space and has a rice supply port and a rice discharge port. Rice grains are supplied into the humidifying vessel through the supply port, whil... | 05/16/1989 |
| 4830647 | Method of manufacturing glass yarns A method of manufacturing glass yarns includes the steps of: forming a large number of glass filaments by drawing molten glass through a large number of orifices formed on the bottom of a bushing; forming a plurality of strands by separately gathering the... | 05/16/1989 |
| 4828558 | Laminate optic with interior Fresnel lens Composite lens, especially an intraocular lens for insertion through an incision into an eye and desirably containing haptics, comprising a flat, partially hollow laminate optic, formed by a pair of relatively thin, sheet-like elements having opposed inte... | 05/09/1989 |
| 4827088 | Electrical ring main unit A three-phase electrical ring main unit comprising a lower chamber module (30) having a wall structure formed from insulating resin material; three input contacts (35), one for each phase, mounted within the lower chamber; three lower switching contacts (... | 05/02/1989 |
| 4825158 | Method of detecting conductive material contained in glass fiber by detecting changes in amplitude and frequency of an oscillator and detecting apparatus therefor A method and apparatus for detecting conductive material contained in glass fiber, in which it is possible to detect fine conductive material contained in glass fiber under the condition that the glass fiber is running in the process of manufacturing the ... | 04/25/1989 |
| 4815677 | Emergency locator device Helium inflatable emergency locator balloon having a longitudinal body and side wings defining horizontally a triangular, bilaterally symmetrical tetralobate monochamber having a forward lobate nose, a rearward lobate hind section and flanking rearward lo... | 03/28/1989 |
| 4817024 | Spectacle-frame shape data producing method A spectacle-frame shape data producing method in which a spline interpolation function is used to digitize the shape M of a spectacle frame to provide spectacle-frame shape data, and the shape M of the spectacle frame is obtained by a lens maker's factory... | 03/28/1989 |
| 4813779 | Perimeter A perimeter having an image projection system which projects an undistorted line target across the full range of a patient's field of vision is disclosed. The image projection system includes a projector, a bundle of optical fiber elements, and lenses ass... | 03/21/1989 |
| 4808181 | Intraocular lens having roughened surface area Intraocular lens for implantation in the posterior chamber of an eye, following extracapsular removal of the natural eye lens, including a lens assembly having an anterior surface formation and a posterior surface formation, at least a portion of the post... | 02/28/1989 |
| 4807299 | Bulk containers A flexible bulk container comprises a side wall structure having an outer wall (10) and an inner wall (11) lying within and closely adjacent to the outer wall. A base closes a lower open end of the side wall structure. A plurality of lifting loops are pro... | 02/21/1989 |
| 4806005 | Spotting system for binoculars and telescopes An auxiliary spotting optical system for binoculars and telescopes includes an auxiliary objective lens proximate the principal objective lens, a principal magnification system field of view indicator and an image transfer arrangement between the field of... | 02/21/1989 |
| 4794973 | Door safety bar A safety braking device for a roll up or sliding door having a door curtain guided for movement by guide channels engaging its edges, the safety braking device comprising a tilt bar hingedly attached to the leading edge of the door curtain, and brake mean... | 01/03/1989 |
| 4794362 | Alternating current power circuit and fuse therefor A fuse for an alternating current power circuit. The fuse comprises an input terminal (4), a first contact (5) electrically connected to the input terminal, an output terminal (9) and a second contact (8) electrically connected to the output terminal. A f... | 12/27/1988 |
| 4791924 | Lens forceps and method of use thereof Lens forceps and method of use thereof for extractive removal from the interior of an eye through a corneal incision of a surgically severed segmental lens fragment, the forceps contemplating a manually manipulatable eye lens size clamp of two relatively ... | 12/20/1988 |
| 4791919 | Surgical instruments Instruments for use in the surgical implanation of a knee prosthesis including a femoral alignment rod for insertion into the medulla of a femur through an access hole located between the femoral condyles. The rod is resiliently deformable so that once th... | 12/20/1988 |
| 4790197 | Liquid sampling apparatus Liquid sampling apparatus for sampling liquid at a controlled depth within the tanks of an ocean going oil tanker comprises a sampling chamber having outwardly opening inlet and outlet valves. The inlet valve 114 is arranged to be actuated by a projecting... | 12/13/1988 |
| 4786298 | Filter assembly A filter assembly (1) comprises a fluid tight housing (6, 7). First and second coupling means (10 and 11) are provided on the housing, each coupling means providing adjacent flow channels into the housing. A filter element is located within the housing, t... | 11/22/1988 |
| 4786025 | Anti-twist signholder support assembly Anti-twist signholder support assembly, formed of a male insert, connectable to an overlying signholder, and having an upper horizontal multi-sided anti-twist plate, and a lower lock formation of diametrically arranged resilient catch fingers, and a matin... | 11/22/1988 |
| 4783931 | Glass run channel With the object of providing a glass run channel which can accommodate the curvature in both front elevation and plan, and also some degree of twisting, in this invention a glass run channel comprises a metal core of general S shape, the metal core having... | 11/15/1988 |
| 4783192 | Joint prosthesis A joint prosthesis for use in long bone joint replacement comprises a tapering stem 4 upon which is located a collar 10 chosen from a range of similar collars having different internal diameters. The collar chosen locates with the stem at a particular hei... | 11/08/1988 |
| 4782614 | Display unit A display unit comprising a light source, a beam splitter, e.g. in the form of a sheet of titanium coated glass, a layer of retroreflective material, a clear shelf and a flexible stencil so arranged that, in use, light passes through the stencil from the ... | 11/08/1988 |
| 4781719 | Method of inserting an intraocular lens into an eye Method of inserting an intraocular lens, having an optic and haptics of flexible material, through an incision into an eye, including preliminarily compressing the lens into a generally cylindrical shape, e.g. in a tubular sleeve, immersing the compressed... | 11/01/1988 |
| 4777700 | Carding machine A carding machine has a toothed takerin (4a) for taking fibre to be carded from a feed arrangement (3a) to a main carding cylinder (5a). The fibre is conveyed on the lower arc of the takerin, and a substantially rigid, flat plate (10) lies below the lower... | 10/18/1988 |
| 4776116 | Rotational signholder support assembly Rotational signholder support assembly formed of a male adapter and mating female socket rotatably receiving the adapter in a selective number of individual relative angular rotational alignment positions, the adapter including an annular rim having a num... | 10/11/1988 |
| 4774439 | Horizontal deflection stage A horizontal deflection stage for a raster scan device (e.g. a television receiver or a monitor) comprises a deflection generator, a d.c. supply regulator for the deflection generator, a voltage controlled oscillator providing drive pulses to the deflecti... | 09/27/1988 |
| 4769035 | Artificial lens and the method for implanting such lens An artificial lens adapted for implantation in the human eye and the method for implanting such lens. The lens is of pliable material so that it may be folded or curled for insertion through a minimum length incision. It has a medial optic portion having ... | 09/06/1988 |
| 4768659 | Merchandising shelf spacer assembly Merchandising unit for stacked row gravity feed consumer product display and self service access, including a merchandise shelf having a rearward product display top surface and a forward product access top surface disposed in angularly offset relation to... | 09/06/1988 |
| 4757575 | Carding engine; and to movable flats therefor A carding engine equipped with a series of movable flats (1), each flat being clothed with a plurality of carding elements (2) and having a downwardly facing supporting face (13) at each end of the flat. Each end of each flat is secured to a support membe... | 07/19/1988 |
| 4756170 | Applicator for crease-setting composition An apparatus for applying a crease-setting composition for setting a crease in textile material in which the composition is forced out of a nozzle at a controlled delivery rate while the nozzle is guided along the crease line.... | 07/12/1988 |
| 4756262 | Multi-needle sewing machine A multi-needle sewing machine has a workpiece feed mechanism which includes first and second side supports located to opposite ends of the needle bar. A plurality of shafts extend between the side supports at locations spaced from the front region progres... | 07/12/1988 |
| 4756140 | Vacuum packaging process A process of packaging goods, especially foodstuffs, comprising enclosing the goods in a sheet of thermoplastics material, preferably a bag, so as to form a package which presents two unsealed juxtaposed surfaces. The package is then placed in a container... | 07/12/1988 |
| 4749377 | Eardrum pressure equalizer An eardrum pressure equalizer for the treatment of middle ear impairment having a source of compressed air for supplying dry room temperature air at a pressure of an order of magnitude of aproximately 3.5 kgs. per square centimeter. The air is supplied to... | 06/07/1988 |
| 4746981 | Multiple screen digital video display A method and apparatus for displaying an interlaced image on a plurality of display screens in which the lines of two fields of the image are replicated a plurality of times in a memory to produce an enlarged image but determined lines are not read out of... | 05/24/1988 |
