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| Number | Title | Issue Date |
| 5045833 | Apparatus and system for alerting deaf persons An improved actuator device is disclosed which comprises a combination of activators, switches, indicator lights and power outlets for providing an alarm to those persons of impaired hearing. The device comprises a housing which has electrical power suppl... | 09/03/1991 |
| 5017057 | Apparatus for drilling a circularly curved bore An apparatus for drilling a circularly curved hole in a workpiece, following a curved path around an arc includes a support, shaped to rest against the workpiece, a chassis mounted to the support on a pivot axis defining a center of the curved path, and a... | 05/21/1991 |
| 4999885 | Device for maintaining orderly tubing or wiring A clip for orderly arrangement and identification of flexible lines such as hospital intravenous tubing has a pocket for grasping the tubing and interengaging protrusions and engagement holes whereby the clip can be chained in a line with other similar cl... | 03/19/1991 |
| 4997028 | Rotary heat exchanger with segmented seals A segmented seal is disposed between a rotary heat-retaining body and its housing, the housing defining a hot flow path and a cool flow path through the housing and intersecting the heat retaining body, and the heat retaining body being movable to transfe... | 03/05/1991 |
| 4993592 | Method for use of container having lid activated and methods therefor A method for storing, mixing, dispensing, and returning a fluid, a mixable composition and a resultant fluid meant for oral application includes the steps of providing a movable member within a cup-like container that isolates the mixable composition, con... | 02/19/1991 |
| 4980685 | Scanning optical keyboard An optical keyboard comprising: a flat optical block whose top face (9) is intended to co-operate with the keys (12); light inlets (2) and light detection outlets (3) having intersections (4) which couple one light inlet with one light detection outlet; k... | 12/25/1990 |
| 4978009 | Video cassette box with removable panel A box for shipping, display and or/storage of a cassette, such as a video cassette, is folded from a single sheet of material. The folded box has a top, bottom, front, back and opposing end portions. The front portion includes a top edge defining a cutawa... | 12/18/1990 |
| 4966516 | Vehicle access ramp having alternative pivots for stowing A vehicle access ramp especially for wheel chair access includes alternative horizontal and vertical pivot assemblies. A foldable ramp is pivotably attached to a horizontal axis hinge, and vertically pivotable around a vertical rod at a side of a doorway.... | 10/30/1990 |
| 4957516 | Inverse flow depth filter assembly An inverse flow depth filter assembly includes an elongated, generally elliptical housing with gas inlet and egress means, and a bottom drain. A filter cartridge is suspended from the housing top so that an annular channel is created between the housing a... | 09/18/1990 |
| 4953790 | Low cost applicator and method of use A low cost sprayer and method of using the sprayer is disclosed. The sprayer is formed with a length of flexible tubing having an inlet end and a tubing outlet end. A nozzle is secured to the outlet end of the hose in a manner to provide a predetermined f... | 09/04/1990 |
| 4949556 | Heating means for washing solutions in cleaning machines A cleaning machine, such as a washing machine, is provided in the bottom region of its wet chamber with an outlet and an intake connected thereto immediately above a feed pump, adjacent to which a heating section with an electric heating element located o... | 08/21/1990 |
| 4947752 | Ammunition for propelling low pressure, low weight bulky projectiles The ammunition features a chamber (1b) having substantially along its full length a constant and uniform internal diameter corresponding to the diameter of a cartridge (2), in order to avoid building up high pressure, the said cartridge (2) being filled w... | 08/14/1990 |
| 4948027 | Device for retaining an attachment member A device for retaining an attachment member having an engagement portion for engagement with an outer circumferential surface of a rod-like member, comprising: a receptacle for receiving a main part of the attachment member with some play; an elastic memb... | 08/14/1990 |
| 4947943 | Fisherman's gear-storing ice auger A fisherman's ice auger has a hollow tubular body with an open end and a closed end, and a support pivotably retaining a crank handle in either of a deployed position, for cranking the body about its axis, and a stowed position wherein the crank handle is... | 08/14/1990 |
| 4946069 | Dispenser for manually discharging flowable media In a discharging apparatus (1) for in particular a single use, the complete pump stroke (11) to be performed only once is subdivided into at least two partial strokes (12,13) by a limiting device (24) which, for the end of each partial stroke, has a stop ... | 08/07/1990 |
| 4946590 | Clamp-on magnetic water treatment device A clamp-on magnetic water treatment device for minimizing hard precipitate scale and lime deposit in a fluid supply, especially a domestic water system, has a magnet array having two sections which clamp together over a non-ferromagnetic section of condui... | 08/07/1990 |
| 4944430 | Fluid dispenser A vacuum-tight and pressure-tight closed storage space in a container is constructionally combined with a thrust piston pump projecting thereinto and a drag piston slidably guided therein and in the initial position of the thrust piston pump is hermetical... | 07/31/1990 |
| 4944488 | Gate valve A high-pressure, high-temperature gate valve which uses a flat faced gate seating on a flat and preferably interchangeable seat, the gate having a wedge-shape on the upstream side which assists in forcing the seating surfaces together which is highly desi... | 07/31/1990 |
| 4942702 | Pre-fabricated panel for building, particularly for burial vaults This panel is outstanding in that each panel is made up of a plate (1) of insulating material inserted during moulding between two layers of cement (2) and (3) of different density and thickness, the transversal faces of the end of each panel being fitted... | 07/24/1990 |
| 4941799 | Displaceable support for wheelchair A height and tilt adjustable wheelchair support has a stationary base (30) with a main support leg (38) thereon. A platform (50) receives a wheelchair (20) and the platform (50) is connected to the main support leg (38) via a chassis (70), vertically mova... | 07/17/1990 |
| 4938090 | Axial actuator An axial actuator wherein an output rod is controlled axially by a recirculating-ball screw-nut screw coupling, the screw of which is formed on the rod, and the nut screw of which is supported in rotary and axially-fixed manner on a support and rotated in... | 07/03/1990 |
| 4938324 | Automatic derailleur shifter An automatic derailleur shifter is disclosed which includes a hollow cylinder body and a piston rod movable within the cylinder. The piston rod carries a dual element piston within the cylinder body in a manner to permit substantially unrestricted fluid f... | 07/03/1990 |
| 4937902 | Crib structure with slidable steps providing storage compartments A crib structure for a child includes a support surface for the child. A plurality of side walls are operatively connected to the support surface. At least one of the side walls includes a door opening and at least one door. The door is laterally slidable... | 07/03/1990 |
| 4937858 | Telephone handset with electro-acoustic converters electrically connected by a cord A handset for telephones and the like has electro-acoustical capsules for hearing and speaking, mounted between an upper housing shell and a lower housing shell of the handset. Each of the capsules is connected to the handset cord by a pair of leads recei... | 06/26/1990 |
| 4936457 | Hotplate stacking aid For the transportation-storage and assembly stacking of electric hotplates (2), a stacking air has pallet plates (10) to be arranged in superimposed manner in stacking layers and which can be directly stacked in one another for storage and which are in th... | 06/26/1990 |
| 4934568 | Discharger for flowable media A discharger, particularly intended for the discharge of flowable media, especially pharmaceutical preparations, has a lock for the discharge head (5) in the form of a pump handle, so that the latter cannot be operated in an accidental or unauthorized man... | 06/19/1990 |
| 4935691 | Phase switched power controller A phase switched power controller connects a load to a alternating current source for a proportion of each half cycle selected by the user. A first full wave rectifier is connected to the voltage source and produces an unfiltered full wave rectified outpu... | 06/19/1990 |
| 4932323 | Type holder, printing type and printing wheel incorporating them Printing type holder, comprising a rotary drive spindle, a support coaxial with the spindle, which is integral in rotation therewith and has at least one cylindrical part with an outer lateral surface, cavities provided on the outer lateral surface, perma... | 06/12/1990 |
| 4932846 | Resilient shaft mounting for pump A resilient shaft mounting for a pump includes one or more sets of leaf plates bearing inwardly from an inner surface of a tube and pressing a resilient bushing on a rotatable shaft. Three plates can each be disposed by their ends to press inwardly agains... | 06/12/1990 |
| 4932301 | Cutting apparatus for sheet material, like paper In a cutting mechanism (1), the cutting blade (2) is clamped against the blade support (3) by cam-like clamping members (25) arranged on a common actuating shaft (22). The clamping members (25) can be jointly adjusted by means of an actuating member (33) ... | 06/12/1990 |
| 4931621 | Electric heater In the case of an electric heater, particularly a radiant heater for glass ceramic hotplates, there are several spirally nested heating resistors, whereof one heating resistor continuously passes through in the central field in such a way that it forms tw... | 06/05/1990 |
| 4931770 | Protection system A system for transferring information stored on a disc, tape or film is provided which prevents unauthorized or unintentional use or disclosure to third parties of the information contained on the disc, tape or film. The disc, tape or film is contained wi... | 06/05/1990 |
| 4930837 | Camping conversion A camping conversion for motor vehicles having an open interior compartment. The conversion includes a floor panel supported by tracks and retractable beneath the vehicle floor, and an auxiliary pop-out compartment which protrudes from the side of the veh... | 06/05/1990 |
| 4931620 | Electric hotplate In an electric hotplate (1), the hotplate body (4) has a throughbore (28) located in its central axis (10) and traversing a central stud (7) and the top surface and in which can be arranged in countersunk manner the head (26) of a fastening bolt (25) proj... | 06/05/1990 |
| 4931401 | Bioreactor The disclosure herein describes a bioreactor for the biochemical treatment of liquids containing organic matter. It comprises a container with an inlet for receiving liquid to be treated with at least one horizontal plate to support a bed of microorganism... | 06/05/1990 |
| 4928395 | Extensible level An extensible carpenter's level includes a pair of body members in end-to-end relationship and a pair of extenders mounted in face-to-face relationship on the body members. The extenders are slideably retained in tracks on the body members. The body membe... | 05/29/1990 |
| 4928421 | Fishhook device and method of making same A fishhook device includes a standard fishhook having a barb, bend, shank and eye. At least one piece of wire can be attached at one end of the shank of the fishhook, preferably substantially adjacent to the eye. The wire is biased by at least one biasing... | 05/29/1990 |
| 4929849 | Noise suppression in recovery of clock from NRZ data A clock generator for extracting a clock signal from a data signal includes a timing recovery circuit operable to produce an output recovered clock which is synchronized with transitions occurring at its input. A circuit gates data transitions to the cloc... | 05/29/1990 |
| 4925227 | Coach seat locking mechanism A coach seat locking mechanism is disclosed which is compatible for use with existing revolving type coach seats. A metallic body having a vertical bore is affixed to one end of the seat lower frame and a locking rod is vertically reciprocal within the bo... | 05/15/1990 |
| 4926030 | End piece for tubular heater An end piece (1) for a tubular heater (2) has an insulator (10) traversed from the end portion (8) by its connecting member (6) in a passage (16) and substantially completely closing the associated end portion (7) of tube casing (3) and on whose end face ... | 05/15/1990 |
