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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 |
| 5123730 | Apparatus for optical remote wind sensing The apparatus of the present invention includes a light source for producing a coherent beam of light. A beam splitter is provided for splitting the beam of light into a first, transmitted beam segment and a second, local oscillator beam. A mechanism is p... | 06/23/1992 |
| 5054232 | Row crop blocking method and apparatus The invention comprises a method and apparatus in which a depending vacuum housing (10) is attached to as vacuum header (12) and includes a lower open end (16) spaced above the ground line. A sensing means (32) is located at the bottom of the housing to l... | 10/08/1991 |
| 5038517 | Greenhouse construction A greenhouse for providing improved growth and environmental control for growing plants comprising a frame defining a structure having a given length and width forming a bounded, interior region for receiving plants; a flexible cover positionable over the... | 08/13/1991 |
| 4989847 | Clamping device An improved bar-clamp apparatus includes an elongate bar which has a first clamping jaw affixed adjacent one end of the bar. A carrier is mounted for selective reversible movement on and along the bar. A second clamping jaw faces the first jaw and is moun... | 02/05/1991 |
| 4984118 | Flux-concentrating, non-ghosting electromagnetic read/write head An electromagnetic read/write head structure for longitudinal/horizontal reading and writing including first and second magnetic pole components which are spaced by a substantially uniform-width, linear, planar gap. Each pole component is characterized by... | 01/08/1991 |
| 4981204 | Mobile material-handling apparatus A mobile material handling apparatus which includes a collapsible conveyor system supported on a wheel-supported vehicle frame. The conveyor system may be shifted from a collapsed state to an extended state through operation of fluid-powered rams. Hinges ... | 01/01/1991 |
| 4978174 | Low-weight, low-aerodynamic-drag disk wheel cover A light-weight, low-aerodynamic-drag disk bicycle wheel is disclosed wherein, bonded to the wheel's tire-carrying rim is a thin, light-weight, aerodynamic drag-reducing structure in the form of a heat-strunk plastic film protected against tearing by an in... | 12/18/1990 |
| 4977899 | Heart data monitoring method and apparatus Improved ambulatory heart data monitoring and recording apparatus and method are described. The apparatus provides a power partitioning and management circuit that enables the extended, continuous ECG monitoring of an ambulatory patient's cardiovascular p... | 12/18/1990 |
| 4975968 | Timed dielectrometry surveillance method and apparatus Dielectrometry monitoring method and apparatus for three-dimensional profiling and colorable imaging of the material contents of articles carried on a conveyor through an interrogation region are disclosed. In a preferred embodiment, the apparatus include... | 12/04/1990 |
| 4975236 | Method of pre-shaping and vacuum molding a thermoplastic sheet A method of shaping a thermoplastic sheet. The sheet is mounted on an articulated frame and pre-shaped by swinging hinged sections of the frame toward each other. A vacuum mold is then placed with its molded surfaces adjacent the pre-shaped sheet. Vacuum ... | 12/04/1990 |
| 4974500 | Hot beverage preparation and dispensing cart A portable cabinet is provided for facilitating the operation of espresso and coffe-making machines and for the merchandising of espresso and coffee. The cabinet includes a counter top with at least two beverage preparation stations at different levels, o... | 12/04/1990 |
| 4974405 | Harvester with rotationally oscillatable cylindrical shakers A fruit harvester with a pair of opposed, rotatable shaker members. A power-driven oscillatable member is associated with each shaker member. Power-transmitting means including slippage means interconnects an oscillatable member and its associated shaker ... | 12/04/1990 |
| 4969291 | Window structure There is disclosed a window unit, comprising a frame, a sash mounted in the frame for movement between a closed position adjacent the frame to an open position in which a space is defined between the sash and the frame, a recess in the frame adjacent the ... | 11/13/1990 |
| 4967756 | Blood pressure and heart rate monitoring method and apparatus Improved ambulatory blood pressure and heart rate monitoring and recording apparatus and method are described. The apparatus uses an auscultatory transducer connected to a microprocessor-based circuit for sensing, validating and recording systolic and dia... | 11/06/1990 |
| 4966666 | Fluid energizing method and apparatus The energizer of the instant invention includes an electric discharge apparatus for creating an electric discharge and a focusing mechanism for focusing the electric discharge on a fluid to be energized. In a preferred embodiment of the invention, the foc... | 10/30/1990 |
| 4964235 | Dispensing fish lure A scent-dispensing fishing lure includes a liquid-dispensing cavity which receives a fish-attracting liquid. The lure includes a mixing mechanism for mixing the fish-attracting liquid and environmental water in the cavity. An inlet port is located at the ... | 10/23/1990 |
| 4965734 | Veneer lathe charging method for determining log spin axis A veneer lathe charging apparatus includes a break-beam scanning system and a computer for determining an optimal log spin axis. The charging apparatus further includes charger arms independently operable and adjustable to transfer a log from a scanning s... | 10/23/1990 |
| 4958641 | Heart data monitoring method and apparatus Improved ambulatory heart data monitoring and recording apparatus and method are described. The apparatus provides a power partitioning and management circuit that enables the extended, continuous ECG monitoring of an ambulatory patient's cardiovascular p... | 09/25/1990 |
| 4957186 | Span-adjustable open-web support bracket A span-adjustable open-web support braket is intended for use in a truss having an upper chord member with a slot in an end thereof, a lower chord member, and a plurality of spaced web members interconnecting the chord members. The bracket includes a leng... | 09/18/1990 |
| 4955888 | Biradial saw A biradial saw including a biradial saw blade having an elongate, arcuate body with a cutting end that is constructed to penetrate a solid substance. The blade's body is formed with inner and outer arcuate surfaces whose curvature radii are substantially ... | 09/11/1990 |
| 4950098 | Slat fence retainer A slat fence retainer for retaining slats in a chain-link fence includes a horizontally disposed slat-retaining element having a pair of spaced apart side walls, a base joining the bottom margin of the side walls and an open top. The element includes a ve... | 08/21/1990 |
| 4949710 | Method of artifact rejection for noninvasive blood-pressure measurement by prediction and adjustment of blood-pressure data For use in performing non-invasive blood-pressure measurement (NIBP), an artifact rejection method for predicting expected data values from acquired data, and for adjusting previously acquired data based on the relationship of actually measured data value... | 08/21/1990 |
| 4950010 | Vehicle frame-mountable accessory receiver apparatus and method for manufacture Receiver apparatus for mounting accessories to the frame of a vehicle, and a method of manufacture of the same, are disclosed. In one embodiment, a bumper/receiver is integrally formed, with the bumper being formed of heavygauge steel and being substantia... | 08/21/1990 |
| 4947848 | Dielectric-constant change monitoring A method for monitoring, over time, changes that occur in the apparent dielectric constant of a selected volumertic space. The selected space may be formed by a substantially homogenous material, in which case, dielectric-constant changes are interpretabl... | 08/14/1990 |
| 4949094 | Nearfield/farfield antenna with parasitic array A parasitic array for use on a transmission/reception antenna which comprises a cylindrical dielectric support having plural conductive, ring-like parasitic elements spaced along the support. The support is an elongate, hollow structure with closed ends a... | 08/14/1990 |
| 4948073 | Turnout with closing frog A model railroad turnout assembly includes a roadbed element having an entry track thereon. The entry track includes a pair of spaced apart entry rails. Plural, branching discharge tracks are mounted on the roadbed element, each discharge track including ... | 08/14/1990 |
| 4948020 | Bicycle carrier-seat cover device This invention relates to a bicycle attachment which can serve as a carrier rack, or as a back protector, or as a seat cover, when moved to various positions. A convertible bicycle carrier-seat cover apparatus which comprises: (a) an attachment adapted to... | 08/14/1990 |
| 4945976 | Lugged chain board loading apparatus High-speed, lugged chain board loading apparatus is described. The apparatus includes a generally horizontal feed conveyor that defines a planar board feed zone, a pick off conveyor having projecting lugs and including an upwardly inclined run that extend... | 08/07/1990 |
| 4944707 | Ring-like flying toy A ring-like throwable flying toy including outer and inner, generally concentric, deformable boundary structures, and an air-foil web joined to and tensed between the structures. In all embodiments, the outer structure includes a springy, nominally circul... | 07/31/1990 |
| 4943103 | Reflected glare-shielding vehicular apparatus A shield for protecting the driver of a vehicle against reflected glare from an exterior mirror is disclosed. The shield takes the form of a planar sheet of material suitably treated to attenuate the intensity of visible light transmitted without distorti... | 07/24/1990 |
| 4942686 | Portable display system A display system includes a collapsible, rectangular frame having a plurality of rectangular box units. Each box unit includes rectangularly arranged sides which are defined by a pair of arms, joined to one another by a scissor connection. The top and bot... | 07/24/1990 |
| 4941496 | Walker with pivoting wheel A walker includes a frame which has pair of spaced apart upright members. A cross piece extends between the upright members adjacent the lower end thereof. A handle portion is attached to the upright members at the upper end thereof. The handle portion in... | 07/17/1990 |
| 4934738 | Combined document binder and cover holder A combination document binder and cover holder is provided in a single article. The binder and cover holder is in the form of an elongated, generally channel-shaped body, preferable made from a resilient plastic material. The body includes two parallel st... | 06/19/1990 |
| 4932912 | Aquatic recreational apparatus Aquatic recreational apparatus providing in an integral structure a kick board and manually operable means for directing a stream of water toward a desired target is described. The apparatus in its preferred embodiment takes the form of a smooth, contoure... | 06/12/1990 |
| 4930796 | Riding vehicle An improved riding vehicle includes a frame having a substantially triangular form which includes a seat region thereon. The seat region includes a knee pocket formed along the longitudinal axis thereof which terminates in a foot ledge adjacent the rear o... | 06/05/1990 |
| 4931113 | Veneer edge joinder method and apparatus Veneer edge treatment method and apparatus are described. The apparatus includes plural work stations distributed along the length of elongate conveyor means for transporting the veneer sheets as a series into and out of the work stations, with each work ... | 06/05/1990 |
| 4927252 | Newtonian telescope assembly with rotary flat mirror A telescope assembly which includes a telescope supported for movement on an equatorial drive ring about a horizontal declination axis. The drive ring is rotatably supported on a stand for movement of the telescope about a polar axis extending through the... | 05/22/1990 |
| 4925200 | Tricycle drive mechanism The vehicle and drive mechanism includes a vehicle frame having at least one steerable wheel carried thereon, an axle mounted on the frame and at least one driven wheel mounted on the axle. First and second ratcheted gears drivingly disposed on the axle t... | 05/15/1990 |
| 4924615 | Detachable sling swivel retention device A retention device for preventing inadvertent release of a shoulder sling from a firearm is provided in the form of a clip having first, second, third and terminal expanses that define a substantially right rectangle and surround the body and gate of the ... | 05/15/1990 |
| 4919523 | Telescope motorized drive attachment A motorized drive attachment for mounting on a telescope frame, actuatable, for instance, to rotate a declination shaft in the telescope. The attachment includes a pair of concentric, detachable sleeves, providing for the detachable mounting of the housin... | 04/24/1990 |
