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| Number | Title | Issue Date |
| 8005233 | Bass enhancement for audio A method and apparatus for conditioning an audio input signal to enhance perception and reproduction of bass frequencies. Harmonics are generated and combined with a phase-shifted version of the audio input signal. Use of a controlled phase shift reduces or eliminat... | 08/23/2011 |
| 4805888 | Orbital-action clamps Quick-action clamping, for holding workpieces in machine tools, and the like, is developed via orbital movements of a clamp member as induced by relative rotation of the mated eccentric head portion of a cooperating special machine screw threadedly engage... | 02/21/1989 |
| 4796854 | Balanced solenoid valves A proportional-control solenoid-actuated fluid valve, capable of governing relatively large volumes and rates of flow swiftly and accurately with expenditure of relatively little electrical power, includes a movable valving member positioned by an armatur... | 01/10/1989 |
| 4785669 | Absolute capacitance manometers A single fluid-pressure transducer unit, of the type in which sensed electrical capacitance is varied in accordance with electrode deflections induced by pressure changes, is rendered capable of characterizing a wide range of pressures extending from near... | 11/22/1988 |
| 4785945 | Assembly of variable-width gravity-feed beverage-container dispenser array from single-lane components In the rack mounting and display of chilled beverage containers, for ready access and withdrawals by retial customers, the gravity-feed forwardly-inclined shelving having multiple parallel lanes for upright presentation of the containers is formed by comb... | 11/22/1988 |
| 4765152 | Beverage dispenser with a partitionless refrigerating stand In a compact beverage dispenser of the type in which the conditioned beverage is chilled and displayed in a plastic bowl atop a stand which houses a compression system of refrigeration, ambient air intake is fan-driven through and along the heat-exchange ... | 08/23/1988 |
| 4729398 | Current-to-pressure transducers In a current-to-pressure (I/P) transducer which controls output pressures by rapidly and precisely venting pressures of fluid derived from a supply, the movable valve member employed in the venting comprises a mechanically-balanced low-mass armature suspe... | 03/08/1988 |
| 4683910 | High-speed protective check valving for pressure transducers and the like Sudden increases in fluid pressure which could be injurious to the diaphragm and seals of a sensitive capacitive pressure transducer, or the like, are instantly protectively blocked or "checked" automatically by a miniature naturally-powered valve having ... | 08/04/1987 |
| 4679585 | Flowmeter-controlled valving An electrically-actuated fluid-flow control valve employed to establish and maintain prescribed flow conditions with the aid of a fast-response flowmeter is caused to operate swiftly, accurately and reliably by way of unique electrical circuitry which sel... | 07/14/1987 |
| 4679118 | Electronic chip-carrier heat sinks Dissipation of heat from a socketed leadless electronic chip-carrier package is promoted by a heat-conducting metal socket cap distinctively overlying and guiding heat away from the socketed package fully along a broad planar surface area, the socket cap ... | 07/07/1987 |
| 4571801 | Method of manufacturing a cartridge unit for establishing controlled laminar-flow conditions In a compact thermal flowmeter unit of the type wherein a portion of the fluid in a main flow path is shunted through a laminar-flow sensor passageway, that section of the main flow path which the sensor bypasses is occupied by an appropriate range-govern... | 02/25/1986 |
| 4552206 | Heat sinks for integrated circuit modules In dissipating heat from miniature electronic devices, circuit modules, or the like, and particularly from dual-in-line package (DIP) type units having leads depending from opposite sides of a thin molded rectangular-parallelepiped body, an elongated shee... | 11/12/1985 |
| 4544942 | Heat sinks with staked solderable studs Heat sinks of the type which are fitted onto electronic solid-state devices to maintain acceptable thermal equilibrium conditions are provided with solderable sheet-metal appendages or studs staked onto their relatively cooler portions by way of punching ... | 10/01/1985 |
| 4522058 | Laminar-flow channeling in thermal flowmeters and the like In a compact thermal flowmeter unit of the type wherein a portion of the fluid in a main flow path is shunted through a laminar-flow sensor passageway, that section of the main flow path which the sensor bypasses is occupied by an appropriate range-govern... | 06/11/1985 |
| 4508163 | Heat sinks for integrated circuit modules In dissipating heat from miniature electronic devices, circuit modules, or the like, and particularly from dual-in-line package (DIP) type units having leads depending from opposite sides of a thin molded rectangular-parallelpiped body, an elongated sheet... | 04/02/1985 |
| 4505409 | Beverage-dispenser valve arrangements In a beverage dispenser of the type in which conditioned liquid is to be tapped through a bottom opening of a bowl normally closed from within by a valve member, unseating of the valve member and attendant gravitational release of liquid are conveniently ... | 03/19/1985 |
| 4471837 | Graphite heat-sink mountings Efficient dissipation and uniform spreading of heat from electronic solid-state devices by their associated heat-sink structures is promoted by thin broad-area thermally-conductive mountings built up from layers of a special form of substantially pure fle... | 09/18/1984 |
| 4464932 | Thermal mass flowmetering Metering and related control of fluid flow are achieved both accurately and at high response speed by way of a unique sequencing of thermal exchanges with the fluid under closely-regulated and inter-dependent thermal conditions. The flowing fluid is first... | 08/14/1984 |
| 4381965 | Multi-planar electrode plasma etching Dry plasma etching of a plurality of planar thin-film semiconductor wafers is effected simultaneously and uniformly in a relatively small chamber enveloping a vertically-stacked array of laminar electrode sub-assemblies each of which includes a pair of op... | 05/03/1983 |
| 4362028 | Multi-bowl beverage dispensers In a refrigerated beverage dispenser having a plurality of coplanar circular cooling plates closing the bottoms of an array of beverage bowls, each concentric turn of a single multi-turn sinuous coiling of evaporator tubing is bonded in intimate heat-exch... | 12/07/1982 |
| 4357839 | Machine safety guard Operator access to the zone at which workpieces are struck in a drop hammer is temporarily but reliably blocked by a sturdy mechanical guard throughout every period when the hammer may commence and complete its fall; a unique physical linkage, between the... | 11/09/1982 |
| 4327894 | Linearized controlled valves Servo control of a butterfly valve or the like, in which fluid flow is inherently non-linearly related to angular orientations of a vane or plug member, is effected through a function-generator mechanism interposed to render the system transfer function s... | 05/04/1982 |
| 4324269 | Pressure regulator Regulation of pressure at which fluid is allowed to flow is determined by a device which is externally substantially monolithic in character and includes internal components assembled within it through an end coupling. Relatively low height and small girt... | 04/13/1982 |
| 4321423 | Heat sink fastenings Auxiliary heat-sink attachments which promote dissipation of heat from electronic solid-state devices and the like are secured with such devices and with associated printed-circuit boards by way of accessory fastenings with which they form a sub-assembly ... | 03/23/1982 |
| 4300191 | Pulse width modulated current fed inverter power supply A fixed frequency pulse width modulated current fed inverter power supply with imbalance compensation provided by means of a primary inductor in the input circuit. Energy is coupled between the primary inductor in the input and secondary inductor windings... | 11/10/1981 |
| 4295116 | Pressure transducer Sensing and electrical-signal characterization of fluid pressures is effected by a miniature precision transducer manufacturable at low cost from a combination of a pair of sub-assemblies, one of which consists of a single-piece metal transducer element h... | 10/13/1981 |
| 4277747 | Wide range digital meter In the ion gauge system disclosed herein, the ion current obtained from an ion gauge tube is directly converted to a signal having a frequency proportional to the ion current so that a digital measurement of vacuum may be obtained. The ion current charges... | 07/07/1981 |
| 4267724 | Strain-gage transducer bridge gages with integral calibration resistors Each of two pairs of electrical-resistance strain gages which are to make up a measurement bridge for a beam-type load cell is fashioned as a composite wherein two spaced-apart grids of foil-type parallel elongated filaments oriented and functioning as st... | 05/19/1981 |
| 4261005 | Miniature heat sink A one-piece stamped sheet-metal heat sink for dissipation of heat which accumulates about the plastic housing and metallic tab of a miniature semiconductor power device is formed as a shallow open-topped channel having short upstanding sides which flare l... | 04/07/1981 |
| 4255124 | Static fluid-swirl mixing In a jet torch of the type in which a venturi yields a high-velocity stream of air entrained with combustible gas released from a pressurized tank, the stream gases are mixed for reliable and efficient burning, while at the same time sidewall cooling and ... | 03/10/1981 |
| 4235285 | Self-fastened heat sinks Dissipation of heat from miniature solid-state devices and the like is achieved by a resilient heat-sink structure which opens to receive a tab or other heat-transfer body freely between two relatively-movable oppositely-disposed broad-area portions of th... | 11/25/1980 |
| 4225181 | Knock-down rockers and the like A rugged and stylish wooden chair shippable in compact knock-down form includes separate prefabricated back and arm subassemblies with lower portions proportioned to serve as contour-blended marginal parts of the seat of a seat-leg assembly, the cooperati... | 09/30/1980 |
| 4219091 | Transducer mounting Strain-gaged transducers sensing weight of a storage tank in an electronic weighing system also provide the sole structural suspension for the tank upon its underlying support. The transducers are arrayed about a position which is central to the tank, and... | 08/26/1980 |
| 4217785 | Erasable-foil-resistance compensation of strain gage transducers A strain-gage transducer incorporating a plurality of electrical-resistance strain gages coupled together in a bridge network is caused to remain zero-balanced under varying-temperature conditions by way of dual-resistance foil-type unit interposed at one... | 08/19/1980 |
| 4215361 | Winged self-fastened heat sinks for semiconductor devices Heat accumulating about the plastic housing and metallic tab of a miniature electronic semiconductor power device is dissipated by a surrounding one-piece sheet metal heat sink shaped as a closely-fitting channel portion closed at the bottom but open-slot... | 07/29/1980 |
| 4208905 | Miniature load beams Precision strain-gage transducers of low-cost construction, which lend themselves well to expression in the form of protectively-enclosed miniature load beams, are developed from sensing elements fine-blanked from wholly flat thin metallic sheet stock, th... | 06/24/1980 |
| 4203488 | Self-fastened heat sinks Dissipation of heat from miniature solid-state devices and the like is achieved by a resilient heat-sink structure which opens to receive a substantially flat tab or other heat-transfer body freely between two relatively-movable oppositely-disposed broad-... | 05/20/1980 |
| 4130003 | Apparatus for manufacturing helical coils In the automated manufacture of helical coils from sheet-metal blanks, each station of a rotatable set or carrousel of winding stations picks up a flat elongated blank from a stationary loader and securely grips and locks one end in an angled position aga... | 12/19/1978 |
| 4122973 | Lined containers for paint and the like Re-use and extended uses of a paint bucket of conventional form and proportions are promoted by disposable thin internal fluid-tight liners vacuum-formed from relatively thick thermoplastic sheet material; each such liner has exceedingly thin bottom and s... | 10/31/1978 |
| 4114852 | Miniature reed-type valve An on-off valving mechanism, which is normally stably self-biased to one operating condition and which is magnetically actuable to display the opposite condition, is in the form of a slender elongated generally-cylindrical cartridge having a laterally-off... | 09/19/1978 |
