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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 |
| 3983304 | Fastener with protective metal-organic base coating A fastener such as a rivet, bolt or screw is provided with a protective coating for protection against corrosion and deterioration, formed by application of a mixture of a powdered metallic substance such as powdered aluminum or molybdenum disulfide with ... | 09/28/1976 |
| 3981532 | Foldable furniture A foldable article of furniture which has four elongated side members, each having a pair of ends. Hinge means is attached to each of the ends, whereby hingedly to connect adjacent ones of the side members in a quadrilateral array. The opposite side membe... | 09/21/1976 |
| 3979351 | Protective coating material A fastener such as a rivet, bolt or screw is provided with a protective coating for protection against corrosion and deterioration, formed by application of a mixture of a powdered metallic substance such as powdered aluminum or molybdenum disulfide with ... | 09/07/1976 |
| 3979199 | Treatment of phosphate rock in soil to provide fertilizer and gypsum Pulverized phosphate rock is spread onto or mixed into soil which is to be fertilized. The soil is then treated with a solution of sulfurous acid, usually the output of a device which burns sulfur in air to form sulfur dioxide and then dissolves the sulfu... | 09/07/1976 |
| 3977818 | Throttling means for geothermal streams A helical screw expander for deriving energy from geothermally heated water. The expander includes a pair of helical rotors with helical structures fitted in an expansion chamber. The geothermally heated water is introduced into said chamber through a thr... | 08/31/1976 |
| 3977106 | Nutrition indicating device There is disclosed a nutrition-indicating device comprising a flat circular chart with a flat wheel rotatably pivoted at each side of the chart. The diameters of the wheels are the same and are less than the diameter of the chart so that a peripheral marg... | 08/31/1976 |
| 3976928 | Tracer mechanism having servo positioning type control means associated with plural motors A tracer mechanism having a stylus to scan the surface of a pattern or a template and to cause a congruent relative movement of a cutter and a workpiece, whereby to reproduce the contour of the pattern or template in the workpiece. The stylus is provided ... | 08/24/1976 |
| 3973472 | Throttle control mechanism for an engine The throttle of an engine is controlled to maintain its speed substantially constant in spite of variations of load upon it. The illustrated load comprises hydraulically operated equipment in a hydraulic system powered by a pump driven by the engine. Thro... | 08/10/1976 |
| 3973468 | Multi-stage extendible and contractible shaft with shock absorption An extendible and contractible shaft comprises a number of shaft members on a common longitudinal axis, each except the outermost member being telescoped within the one next adjacent. Each telescoped member has a piston slidably sealed to the inner wall o... | 08/10/1976 |
| 3968041 | Apparatus for collecting oil slick from a body of water A system for removing oil slicks from water surfaces such as the ocean, harbors, lakes or ponds. An endless conveyor, for example, the surface of a drum or of a belt, contacts the oil slick, which adheres to it. The slick is conveyed by the conveyor to me... | 07/06/1976 |
| 3961480 | Pressure source and systems incorporating it A pressure source for providing a stream of liquid at a substantial pressure. The pressure source includes pressurizing means such as a piston-cylinder assembly to which a force is applied to expel the contents thereof under pressure to form the stream. W... | 06/08/1976 |
| 3960146 | Traction belt A traction belt for pelvic traction. It includes an encircling element adapted to be fastened around the patient, and has a pull-strap depending from the rear thereof. The pull-strap includes a pair of flexible arms joined to the encircling element at spa... | 06/01/1976 |
| 3957125 | Multi-stage double-acting extendible and contractible shaft drive for drilling device A uniquely integrated arrangement of concentric tubes in combination with concentric pistons and special interconnecting fluid pressure passages therein, said component members cooperating in a manner as to permit extreme compound extension or retraction,... | 05/18/1976 |
| 3951372 | Three dimensional clamp device There is described a three dimensional clamp for holding a plurality of rod-like elements in various relative positions and angles. The clamp body has two opposed clamping sections aligned along a longitudinal axis and joined by an obliquely extending int... | 04/20/1976 |
| 3952235 | Control system for electrodynamic mechanism There is disclosed an electric system for controlling the direction of rotation of two counter rotating motors operated from a source of A.C. line voltage, the system comprising a selecting circuit operated by a rectifier connected to the source and conta... | 04/20/1976 |
| 3948153 | Count separator for a stream of overlapped articles A separator for providing a gap between counted groups of previously overlapped articles of a stream of said articles. The separator includes a counter which counts the articles as they issue from the feed path. A spur path and an output path diverge from... | 04/06/1976 |
| 3945704 | Device for detecting an applied compressive load A one-shot device for detecting the application of a compressive load of predetermined amount which includes a first and a second electrically conductive metallic member, each of which has a substantially planar face. The first member is made of a materia... | 03/23/1976 |
| 3945454 | Radiator for a vehicle engine The radiator comprises a radiator cap for closing a cooling medium supply port, valve means for permitting the interior of a radiator body to communicate with the open air, locking means operatively associated with the valve means and for locking the radi... | 03/23/1976 |
| 3945626 | Vehicular springing means A telescoping springing means for a vehicle, for example a motorcycle or automobile. The springing means comprises a first and a second telescopic member which are coaxial and are intended for attachment to respective relatively movable parts of the vehic... | 03/23/1976 |
| 3944330 | Electro-optic device An electro-optic device comprises a plurality of first electrodes provided on a top substrate and a second electrode provided on a bottom substrate, the first electrodes confronting the second electrode through electro-optical matter which will show elect... | 03/16/1976 |
| 3941384 | Balloon carried basket for ball game Equipment for playing hoop ball comprises a hollow inflatable balloon of toroidal shape having a central circular opening of sufficient diameter for passing a ball through it. A basket which may be somewhat similar to a basket used in playing basketball i... | 03/02/1976 |
| 3934754 | Device for issuing single units of flat flexible articles A device for issuing single copies of flat flexible articles, such as newspapers or magazines. A stripper member comprising a rotatable conveyor has engagement elements which engage an article to be issued near one of the edges of the article. The conveyo... | 01/27/1976 |
| 3934586 | Non-refillable multiple dosage syringe A multiple dosage syringe comprises a hollow barrel through which a piston slides by being pushed by a piston member protruding from the rear of the barrel so that liquid material within the barrel is discharged through a discharge member at the front end... | 01/27/1976 |
