Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 4877269 | Board book for preschool children A board book for preschool children comprising a plurality of generally quadrilateral panels in side-by-side, congruent, stacked, relation, to define the book top edging, outside edging, bottom edging, and inside edging, with the panels being bound togeth... | 10/31/1989 |
| 4860583 | Air velocity transmitter device An instrument probe has two sensing elements; one is a self heated thermistor that serves as the air velocity sensor, and a second sensing element in the form of a chip thermistor, that are separately but simultaneously exposed, in the use of the instrume... | 08/29/1989 |
| 4858698 | Weight transfer linkage arrangement A weight transfer linkage arrangement for connection between the three-point hitch of a tractor, a tool bar carrying agricultural implements and a hitch. The linkage arrangement includes a first parallel linkage connecting the tool bar and the hitch and a... | 08/22/1989 |
| 4856433 | Initiator device with adiabatic compression ignition An initiator device for activating air crew escape systems comprising a housing of elongate cylindric configuration defining a central chamber having a propellant gas discharge bore at one end and being open at the other end for receiving and static press... | 08/15/1989 |
| 4858244 | Mechanically actuated laser initiator A laser type initiator device for activating air crew emergency escape systems and the like comprising a housing having a generally cylindrical chamber and defining a trough opening at one end of same, with the chamber and opening being coaxially oriented... | 08/15/1989 |
| 4854088 | In-track rail base grinding method For grinding use on the base underside of continuous in-track welded rail type track defining a railroad right of way, for removing rail excess weld metal from the underside of the rail base, at the weld joint thereof, after ballast has been sufficiently ... | 08/08/1989 |
| 4850553 | Ejector arrangement for aircraft store racks An ejector arrangement for aircraft store racks that are carried by military type aircraft and the like for releasably attaching to the aircraft stores such as conventional or nuclear weapons, in which the ejector arrangement is duplicated in mirror image... | 07/25/1989 |
| 4844289 | Vibratory type storage bin arrangement with low profile bottom and rectilinear discharge chute characteristics A storage bin arrangement especially suited for bulk solid material storing and discharge in accordance with impelled retrieving concepts, in one embodiment of which essentially the entire bin itself is arranged for responding to a circular conveying type... | 07/04/1989 |
| 4841782 | Target fluid flow indicator gauge A target fluid flow indicator gauge comprising a non-magnetic housing defining a target chamber having a rounded portion that is curvilinear about an axial center that is coaxial with a fluid flow central axis through the gauge, with the chamber rounded p... | 06/27/1989 |
| 4838090 | Multicoil bourdon tube type pressure gauge A multicoil tube type pressure gauge arranged for direct drive of the gauge pointer and for safely handling overpressure in the event of Bourdon tube rupture comprising a casing of round configuration defining a planar upright main chamber, with the casin... | 06/13/1989 |
| 4837956 | Plastic advertising insert for food packages A printed insert for food packages consisting of a film laminate including a central core layer of biaxially oriented polymeric film printed on one or both sides, then coated on both sides with a layer of adhesive over which is laminated an outer layer of... | 06/13/1989 |
| 4827095 | Differential pressure switch assembly with high static pressure use characteristics A differential pressure switch assembly that includes a conventional snap action switch for controlling the off-on modes of operation of state of the art equipment, which assembly comprises a high pressure plate that defines the high pressure cavity and a... | 05/02/1989 |
| 4822174 | Blending vessel for microbiological analyses A culture blending vessel adapted for the preparation and containment of samples for microbiological analysis which includes a vessel body and a rotor assembly. The mouth opening of the vessel body is closed by a lid which threads onto the top of the vess... | 04/18/1989 |
| 4799673 | Bench press safety apparatus A bench press safety apparatus including safety supports and weight unloading shelves, which shelves are laterally adjustable to permit alignment with weight discs on a barbell supported on the safety supports. The unloading shelves support the barbell an... | 01/24/1989 |
| 4795945 | Starting circuit for high intensity gaseous discharge lamps A circuit for starting, operating and instant hot restarting of high intensity gaseous discharge lamps utilizes a conventional ballast, an ignition transformer and a pulse transformer. The ignition transformer is connected across the ballast output and is... | 01/03/1989 |
| 4790803 | Method of making bottom gusset bag pad arrangement for liquid containers The method of making from tube stock the bag pad arrangement of parent application Ser. No. 068,062 that is concerned with bagging a pair of liquid containers, such as containers for carry out for milk shakes, carbonated beverages, and other types of drin... | 12/13/1988 |
| 4781378 | Promotional game A promotional game particularly adapted for use in connection with packaged food products, the game including a game board preferably printed on the product container and one or more game cards. The game board has imprinted on it a first set of game indic... | 11/01/1988 |
| 4775154 | Promotional game A promotional game particularly adapted for use in connection with packaged food products, the game including a plurality of specially constructed game cards. Each game card consists of a transparent film laminate on which is imprinted a set of game indic... | 10/04/1988 |
| 4774893 | System of handling refuse derived fuel utilizing same to fire power plants A system for handling refuse derived fuel (RDF) devised to make RDF fired power plants practical, that includes a method and apparatus for receiving, storing and discharging, distributing and feeding RDF at the plant that accepts such material for fuel, w... | 10/04/1988 |
| 4769126 | Bottom gusset bag pad arrangement for liquid containers A bag pad arrangement, and method of making same from tube stock, for bagging a pair of liquid containers, such as containers for carry out for milk shakes, carbonated beverages, and other types of drinks, that are commonly available at fast food outlets,... | 09/06/1988 |
| 4763383 | Electrically conductive caster having loop depending rings A caster with a constant electrically conductive path defined from the pintle to the surface on which the caster wheels are supported to prevent the build up of static charges which may generate sparks and uncontrolled voltage surges that may damage elect... | 08/16/1988 |
| 4759411 | Selective pivotal mounting arrangement for coulters A mounting arrangement for fertilizer coulters including a selective locking mechanism whereby, at the option of the operator, the coulter may be permitted to pivot about the coulter supporting shank or be locked in place.... | 07/26/1988 |
| 4759572 | Tube connector A tube connector used to connect conduits for fluid pressure to pressure testing equipment, the tube connector including a piston slidably disposed within a housing, the piston defining a chamber for containment of a seal which engages the outer periphery... | 07/26/1988 |
| 4754893 | Container for mixing and storage A container is provided for the mixing and storage of liquid and liquifiable ingredients which, when full, must be carried from place to place. The container has a constricted neck between an upwardly flared brim and a downwardly flared shoulder section t... | 07/05/1988 |
| 4751794 | In-track rail base grinding apparatus For grinding use on the base underside of continuous in-track welded rail type track defining a railroad right of way, for removing rail excess weld metal from the underside of the rail base, at the weld joint thereof, after ballast has been sufficiently ... | 06/21/1988 |
| 4752101 | Tilt control arrangement for office furniture chair A tilt control arrangement for office furniture chairs of the type having a chair seat structure mounted on a supporting base for rearward and forward tilting movement of the chair seat about an essentially horizontal axis extending essentially crosswise ... | 06/21/1988 |
| 4743150 | Elevatable hitch assembly with lateral slot for trailer on flatcar A hitch assembly for securing a forward end portion of a semi-trailer carried on a platform such as a railroad flat car includes a support bed having an upper surface for supporting engagement with a bearing surface around a kingpin on the semi-trailer. T... | 05/10/1988 |
| 4730938 | Mixer housing A mixer housing is provided to partially enclose and support a long shaft rotary mixer for use on an open cannister. The housing includes a generally semicircular seat channel on the housing's bottom panel configured to accommodate a range of cannister mo... | 03/15/1988 |
| 4725700 | Airflow switch for air ducts An airflow switch for sensing airflow or lack of same in an air duct comprising a housing base, mounting in side-by-side relation an adjustable range spring and a single-pole double-throw snap action microswitch, with the microswitch having its actuating ... | 02/16/1988 |
| 4721272 | Emergency remover device for ejecting aircraft canopies An emergency remover device for ejecting an aircraft canopy preliminary to in-flight ejection of personnel from the aircraft, which device is a ballistic gas actuated telescoping multi-cylinder assembly that is normally keyed in retracted relation and com... | 01/26/1988 |
| 4718279 | Dual bourdon tube type sensing pressure transducer A pressure transducer in the nature of a differential pressure transmitter including an instrument housing defining a chamber in which is mounted a sensing transducer one of several known types powered to provide a gauge signal that is to be supplied to i... | 01/12/1988 |
| 4699120 | Charcoal grid arrangement for charcoal grills A charcoal grid arrangement for barbeque grills, which grills are of the type comprising an open top receptacle defining a floor that is apertured at its center to receive and hold a discretely separate bowl forming a tinder receiver and ash collector at ... | 10/13/1987 |
| 4697368 | Ammunition storage compartment A housing adapted to be attached to a pistol grip for storage of a fast loading plural cartridge holder for revolvers.... | 10/06/1987 |
| 4696394 | Easily removable protective covering for annular objects A protective covering for annular objects, such as caster wheels, which covering consists of a continuous band of heat-shrinkable plastic material defining spaced marginal edges thereabout, which band is proportioned thereabout to be closely received over... | 09/29/1987 |
| 4693732 | Piston vibrator A piston vibrator adapted for use in vibrating insulated structures through a rod or other vibration-transmitting structure, the vibrator including a piston slidably disposed in a cylinder defined in a housing, the piston associated with a strike surface ... | 09/15/1987 |
| 4693774 | Method of labeling using a semi-automatic labeling machine A labeling device in the nature of an attachment for application to a labeling machine of the type disclosed in Wesley U.S. Pat. No. 3,278,359 for adapting the machine of that patent to mechanically exit from the labeling station, in a stack-like manner, ... | 09/15/1987 |
| 4688491 | Grommet arrangement for office furniture desk tops A grommet arrangement for application to the upwardly facing working surfacing of an office desk top for acommodating application to and through the desk top of the plug and cabling of electrical and/or electronic equipment to be used at the desk, compris... | 08/25/1987 |
| 4678040 | Methods and apparatus for recovery of hydrocarbons and other liquids from underground Methods and apparatus for the recovery of petroleum origin hydrocarbons and other liquids from underground at sites of refineries, oil, gasoline and other liquid storage and distributing facilities, tie creasoting plants, and the like. Pursuant to the inv... | 07/07/1987 |
| 4676538 | Fertilizer implanting tool A tool for implanting fertilizer spikes in the ground with a rod slidably disposed in an open ended hollow tube which is adapted to be inserted into the ground to a predetermined depth. The fertilizer spike engages the end of the slidable rod, the hollow ... | 06/30/1987 |
| 4676402 | Quick release aerator A quick release aerator is provided for discharging intermittent bursts of pressurized air into a storage container to implement material flow. The unit includes a piston and valve assembly disposed internal to a pressure tank. The assembly features one o... | 06/30/1987 |
