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The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 4809828 | One-way damping valve mechanism for hydraulic damper A one-way damping valve mechanism in a hydraulic damper having a first hydraulic chamber defined in a cylinder, and a piston rod having an inner end on which there is mounted a piston slidably fitted in the cylinder, divides the first hydraulic chamber in... | 03/07/1989 |
| 4800278 | Pyroelectric infrared sensor External noise in an infrared sensor for a ceiling type human detector is suppressed by increasing the conductivity between a conductive window and the can and improving the temperature compensation by offsetting any difference in the electromotive force ... | 01/24/1989 |
| 4790262 | Thin-film coating apparatus A thin-film coating apparatus for coating a thin film on a material includes a casing, a spinner mounted in the casing for rotating the material, and a pipe disposed upwardly of the spinner and having in a lower end thereof a nozzle for dropping a film-fo... | 12/13/1988 |
| 4790674 | Impact printer having wear-resistant platings on hammer springs and pole piece tips In a dot matrix line printer in which a plurality of hammer springs mounted along the length of an elongated reciprocating hammerbank are selectively released or fired to impact dot printing impact tips mounted thereon against a print paper through a leng... | 12/13/1988 |
| 4790087 | License plate assembly for motorcycles A license plate assembly on a motorcycle includes a stay by which a license plate is erected from a rear cover over a rear wheel behind a seat, and an illumination device embedded in the rear cover below and behind the license plate for upwardly emitting ... | 12/13/1988 |
| 4790446 | Floating roof drain system A drain system for the floating roof of an oil tank or similar tank couples a drain sump at the underside of a central portion of the floating roof to the outside of the tank wall at a lower portion thereof via a flexible arrangement of rigid pipe lengths... | 12/13/1988 |
| 4783211 | Apparatus for locally heating conveyed glass sheets There is disclosed an improved apparatus for locally heating selected portions of glass sheets conveyed through a tunnel type furnace on a roller conveyor. The apparatus comprises two localized heaters positioned within the furnace, supporting members for... | 11/08/1988 |
| 4779697 | Riding-astride type whole-wheel steered vehicle A riding-astride type whole-wheel steered vehicle (100; 200) comprising front wheels (2) and rear wheels (3) attached to the front part and the rear part of a vehicle body frame (1), respectively, a power transmission mechanism (8, 11, 21) for transmittin... | 10/25/1988 |
| 4778172 | Animal head An animal head suitable for attachment to a stuffed animal body is molded to form a thin shell and then filled with conforming foam rubber. The head defines open jaws that can fit around a wrist of a person and an elongated tongue that can be wrapped arou... | 10/18/1988 |
| 4776071 | Conveyor roller for roller conveyor in glass sheet processing system A conveyor roller for use in a roller conveyor for conveying a heated glass sheet in a glass sheet processing system includes an elongated core rotatable by driver means, and a support body made of a felt material comprising fibers of at least one type wh... | 10/11/1988 |
| 4776118 | Display device A display device for displaying an image by forming same in a space includes a concave mirror having a reflecting mirror surface of a dark color and a luminous screen for displaying a picture thereon. Light is prevented by a light shielding structure from... | 10/11/1988 |
| 4774935 | Post surgery device A post surgery device and method includes a pair of pressure pads and a harness that extends around the back of a patient's head to retain the pressure pads against the naso-labial region of the patient's face following a lipo-suction procedure to reduce ... | 10/04/1988 |
| 4773231 | System for preheating water using thermal energy from refrigerant system A preheater system for using thermal energy available in a refrigeration cycle to heat potable water disposes a double-walled coil having an internal vent path within a water filled tank. Superheated refrigerant is passed through the coil downwardly betwe... | 09/27/1988 |
| 4771423 | Multiplex transmission system A multiplex transmission system (100) in which any (Ni) of a plurality of nodes (Nl -Nn) connected loop-like with a signal transmission path (1a, 1b) and each respectively connected to, for controlling, one of a plurality ... | 09/13/1988 |
| 4769059 | Glass melting furnace A glass melting furnace includes a furnace body including for storing molten glass, an upstanding tank including a bottom member lying flush with the bottom wall of the furnace body and a rear wall remote from the furnace body, the upstanding tank communi... | 09/06/1988 |
| 4757786 | Releasable engine coupling arrangement An arrangement for releasably coupling an engine to a driven device such as a power tool includes a lug-bearing ring mounted on the engine, the ring encircling a centrifugally operated clutch, splined shaft or other shaft coupling member at the end of a d... | 07/19/1988 |
| 4753438 | Back and gluteus maximus exerciser and method of using same An exercise device is providing for suspending the body above a support surface while a person performs exercises designed to stretch and strengthen the full range of back extensor, abdominal and gluteus maximus muscles. The device includes a pelvic brace... | 06/28/1988 |
| 4753668 | Method of correcting the attitude of an article being conveyed A method of correcting the attitude of an article being conveyed in a feed system including two second feed paths for receiving the article from a first feed path and feeding the article so that a first part and a second part, which are related to each ot... | 06/28/1988 |
| 4751865 | Self guiding portable saw with saw guide assembly A saw highly accurate, light weight guide assembly releasably attached to a portable power saw to provide the accuracy of a table saw while retaining the convenience of a portable saw. The saw includes a bidirectionally telescoping slide assembly having a... | 06/21/1988 |
| 4751441 | Transducer position control system for disk storage equipment A method and apparatus are disclosed for positioning a transducing apparatus relative to a rotating storage medium through the use of an externally commutated positioning apparatus under control of a processing element. In addition, a control method is di... | 06/14/1988 |
| 4750643 | Sterile fluid dispensing system and method A disposable system for enabling a succession of individuals to be supplied with a sterile medical solution during operative and other procedures utilizes a number of spaced apart, penetrable elastomerically sealed funnels branching from an outlet from th... | 06/14/1988 |
| 4749967 | High frequency electrical switch A low cost, vibration resistant high frequency switch includes a conductive housing having bores for receiving a center probe, first and second cantilevered side probes, a floating center contact and a dielectric control rod. The center probe includes an ... | 06/07/1988 |
| 4749399 | Ring mold unit for shaping and tempering glass sheet A ring mold unit for shaping and tempering a glass sheet includes a shaping ring mold for bending a glass sheet heated to a temperature close to the softening point of glass, in association with upper and lower mold members, and a cooling ring mold for su... | 06/07/1988 |
| 4749294 | Printer hammerbank cam drive having pulsed startup In a dot matrix line printer in which an elongated hammerbank and an opposite conunterbalancing assembly are driven in opposing reciprocating fashion by a motor driven cam, the size of the cam drive motor and the current requirements thereof during startu... | 06/07/1988 |
| 4749436 | Equipment for thermal stabilization process of photoresist pattern on semiconductor wafer An equipment (100; 200) for thermal stabilization process of photoresist pattern on semiconductor wafer comprises an ultraviolet lamp (20) by which a photoresist pattern formed on a semiconductor wafer (W) put in a process chamber (S) under vacuum pressur... | 06/07/1988 |
| 4747097 | Multiplex transmission system A multiplex transmission system (100) in which any (Ni) of a plurality of nodes (N1 -Nn) connected loop-like with a bidirectional signal transmission path (1a, 1b) and each respectively connected to control one of a plural... | 05/24/1988 |
| 4746288 | Compact cartridge lighter having fuel vaporization element in combination with liquid barrier filter A gas lighter of compact size and of elongated cylindrical configuration has a head assembly joined to a disposable fuel cartridge. The head assembly includes an aluminum fuel vaporization element located immediately above and in communication with the in... | 05/24/1988 |
| 4746909 | Modular security system An electronic security system for monitoring merchandise and the like is provided which is responsive to any change of state in the electrical connections thereto thus providing for the detection of virtually any tampering with the merchandise or security... | 05/24/1988 |
| 4743771 | Z-axis height measurement system This invention concerns an optical system for use with a television camera for detecting the surface location of an object. A preferred optical image having a distinct, unique, recognizable pattern is projected on a surface along a defined path that ultim... | 05/10/1988 |
| 4743471 | Method for random coloring of roof tiles Methods and apparatus are described for the random coloring of concrete roof tiles during the manufacture of such tiles. This enables the tiles to be installed in random fashion and without following any particular sequence. At the same time a roof is ach... | 05/10/1988 |
| 4739923 | Hot/cold water mixing device A hot/cold water mixing device includes a hot water supply valve disposed in a hot water feed pipe for regulating the amount of hot water passing therethrough, a cold water supply valve disposed in a cold water feed pipe for regulating the amount of cold ... | 04/26/1988 |
| 4740112 | Powder feed control system A powder feed control system employs an arrangement of conduits and valves for selectively directing a gas flow either through a powder feeder or through a bypass so as to quickly and precisely control the introduction of powder into and the removal of po... | 04/26/1988 |
| 4738275 | Cartridge puller for hot and cold water mixing valve A quick, lightweight cartridge puller for hot and cold water mixing valves operates to provide an increased mechanical force advantage while applying opposed relative forces between a valve cartridge and its value housing to avoid stressing wall and decor... | 04/19/1988 |
| 4736437 | High speed pattern recognizer An apparatus and method for storing a reference scene and a scene under search in separate addressable memories. The reference scene is addressed along a scan line at a selected angle giving the impression that the reference memory has been rotated. The s... | 04/05/1988 |
| 4732043 | System and method for obtaining digital outputs from multiple transducers A method and apparatus are disclosed for deriving digital signals from analog variations of different sensing elements in a transducer. Each sensing device controls the frequency of a variable frequency oscillator, which is energized when a reading is to ... | 03/22/1988 |
| 4730786 | Low noise, flow limiting, laminar stream spout A faucet spout attachment is disclosed including a flow-limiting plate having flow-controlling orifices. Downstream of the flow-limiting plate, alternate series of perforated disks and wire screens arrest stream velocity and redistribute the velocity prof... | 03/15/1988 |
| 4729142 | Toothbrush A toothbrush for improved execution of the modified Bass method of cleaning teeth comprises a handle having a bristle mounting and disposed at a negative angle relative to the principal axis of the handle. In a specific example, a substantially rectangula... | 03/08/1988 |
| 4725904 | Magnetic disk memory apparatus with improved contamination control A "Winchester" type magnetic disk memory apparatus is disclosed that includes an air recirculation system in the clean chamber that assures positive pressure at all points of potential leakage. In conjunction with that feature, the head assembly positioni... | 02/16/1988 |
| 4723621 | Motorcycle A motorcycle [1; 101; 201] includes an engine unit [2] disposed centrally in the motorcycle [1; 101; 201], front swing arms [14, 18] having rear ends operatively connected to the engine unit [2] for vertical swinging movement, with a steering arm [26] whi... | 02/09/1988 |
| 4723809 | Glass window for motor vehicles There is disclosed herein a glass window for use in motor vehicles which comprises a glass sheet, a glass frame integrally fitted over the peripheral edge of the glass sheet and sealingly mounted on a window frame of a vehicle body, a plurality of support... | 02/09/1988 |
