Did You Know...
...that the Band-Aid Bandage was invented by a Johnson & Johnson employee whose wife had cut herself? Earl Dickson's wife was rather accident prone, so he set out to develop a bandage that she could apply without help. He placed a small piece of gauze in the center of a small piece of surgical tape, and what we know today as the Band Aid bandage was born!
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| Number | Title | Issue Date |
| 5466133 | Peristaltic pump and diaphragm therefor A peristaltic pump having a shaft mounted within a housing and coupled with a rotor to induce nutation in a wobble plate. A pump diaphragm is located and affixed to one side of the wobble plate and at its periphery to the housing. A backup diaphragm is em... | 11/14/1995 |
| 5449276 | Two stage vacuum pump having different diameter interengaging rotors A fluid rotating apparatus includes a plurality of rotors accommodated in a housing, at least one of the rotors having its outer diameter different from that of the other of the rotors. Bearings are provided for supporting rotary shafts of the plurality o... | 09/12/1995 |
| 5433590 | Cooling device for the lubrication circuit of a compressor In a cooling device for a rotary piston compressor, in particular a screw-type compressor, which is part of a refrigerant circuit together with a condenser and an evaporator, coolant of the refrigeration system and oil serving to lubricate bearings as wel... | 07/18/1995 |
| 5421708 | Oil separation and bearing lubrication in a high side co-rotating scroll compressor A high side co-rotating refrigerant scroll compressor includes a motor disposed vertically above its compression mechanism. The discharge of gas from the compression mechanism is through the drive shaft of the drive scroll member which is rotatably suppor... | 06/06/1995 |
| 5411387 | Rotary displacement compressor having adjustable internal volume ratio and a method for regulating the internal volume ratio A rotary displacement compressor has an adjustable regulator (22) which determines the internal volume ratio of the compressor. The regulator (22) is adjusted in response to the sound level of a sound of compressed working medium, which is sensed by a sou... | 05/02/1995 |
| 5395220 | Speed detector of scroll-type fluid machine A speed detector of a scroll-type fluid machine in which a fixed scroll and an orbiting scroll, each of which includes a spiral wrap disposed on the inner surface of an end plate thereof, are engaged with each other and housed in a closed housing, and the... | 03/07/1995 |
| 5322428 | Gear transfer pump with lubrication and sealing of the driveshaft and idler pin An improved rotary, gear within a gear transfer pump, including a pump housing having a circular pumping chamber communicating with a first port and a second port. An externally driven rotor is in meshing relationship with an internal idler gear. To enabl... | 06/21/1994 |
| 5257921 | Electronic slide valve position indicator A closed stainless steel tube is used to provide pressure and media isolation between the core and coils of a sensor in the form of a variable core transformer. The core is connected to and moved with a slide valve of a screw compressor and its actuating ... | 11/02/1993 |
| 5028220 | Cooling and lubrication system for a vacuum pump A fluid management system for a rotary screw vacuum pump is provided in which lubricating fluid is transmitted to the vacuum pump from an oil supply reservoir while a coolant fluid is circulated to the vacuum pump from a fluid reservoir containing a suppl... | 07/02/1991 |
| 4983106 | Rotary screw machine with multiple chambers in casing for lubrication-coding fluid The machine comprises first and second screw rotors (1, 2) supported by bearings (47) in a stator casing (3) which is provided with a suction inlet and a delivery outlet, the first rotor is driven by a motor (10) and the second rotor is driven by means of... | 01/08/1991 |
| 4767292 | Electrical commutation apparatus A fluid motor having a gerotor gear set includes a first member having internal teeth and a second member having external teeth. The second member is rotatably and orbitally mounted within the first member. The teeth of the first and second members cooper... | 08/30/1988 |
| 4737087 | Drive shaft seal for gear pump and method A seal for the drive shaft of a gear pump for polymeric materials dissolved in a fluid solvent is disclosed, and which is adapted to prevent the polymeric material from leaking and hardening on the drive shaft. The seal includes a pair of axially spaced a... | 04/12/1988 |
| 4735559 | Scroll-type vacuum pump with oil seal between suction and discharge chambers An upper housing for rotatably supporting a driving scroll in a sealing container is provided with an annular chamber to be maintained at the atmospheric pressure. The annular chamber is communicated with a compression chamber formed between the driving a... | 04/05/1988 |
| 4697998 | Hydraulic motor having integral flow control capability A closed-loop motor speed control system is disclosed including a gerotor motor (11) having a gerotor gear set (51) operable to transmit rotational torque output by means of a main drive shaft (83) to an output shaft (13) by means of a set of splines (79)... | 10/06/1987 |
| 4679488 | Integral rotational displacement sensor for an hydraulic motor An integral sensor for an hydraulic motor measures speed, torque and rotation displacement produced by the motor by combining pressures produced in pressure chambers of the hydraulic motor as the rotor rotates enabling a pressure sensor to provide a press... | 07/14/1987 |
| 4536130 | Simplified unloader indicator for helical screw rotary compressor The shaft coupling a reciprocating piston of a fluid motor to a slide valve shiftable longitudinally along a screw compressor housing and varying the amount of compressor suction gas returned to the suction port for varying compressor capacity constitutes... | 08/20/1985 |
| 4527057 | Test body arrangement A test body or phantom for use in checking the performance of apparatus which detects the emission of radiations from a body includes an element of predetermined shape which incorporates a material having a known level of radiation intensity.... | 07/02/1985 |
| 4515512 | Seal for high pressure pump or the like A seal for the drive shaft of a gear pump for melted polymeric materials is provided, which includes a reduced pressure zone, a mechanical packing seal, and a liquid filled chamber positioned in succession along the drive shaft. The liquid is a solvent fo... | 05/07/1985 |
| 4502853 | Rotational speed sensor for vane compressors In a vane compressor, a rotational speed sensor for sensing the rotational speed of the rotor comprises a permanent magnet embedded in an end face of the rotor, a pin formed of a ferromagnetic material, rigidly fitted in a pump housing accommodating the r... | 03/05/1985 |
| 4465442 | Rotary piston pump with pressure equalization chambers for the shaft split seals A rotary piston pump includes a casing and partitions within the casing defining an expansion chamber and with a gear and bearing chamber on one side of the expansion chamber and a bearing chamber on the other side. The partitions between the expansion ch... | 08/14/1984 |
| 4373877 | Pump with rotatable reservoir casing and index means A power steering pump includes a pump housing (12) and a chambered sheet metal casing (14) around the pump housing. The pump housing and casing cooperate to define a fluid reservoir (22) for the power steering system. The pump housing defines a cylindrica... | 02/15/1983 |
| 4328824 | Flow divider with plural metering gears, unrestrained spacers there-between and lubricated end roller bearings A flow divider is described for accurately dividing and metering the flow of a common fluid, such as fuel oil, to a plurality of fluid outlets. The flow divider includes a plurality of metering gear sets rigidly fixed on two parallel common continuous sha... | 05/11/1982 |
| 4265603 | Refrigerant compressor for air conditioning of vehicles A refrigerant compressor for use with an air conditioner for vehicles, which comprises a housing in which a vane pump is accommodated, and a covering disposed so as to enclose said housing in a fashion that its inner wall cooperates with the outer wall of... | 05/05/1981 |
| 4219313 | Commutator valve construction An assembly of plate members for forming a commutator valve for hydraulic devices of the expanding-contracting pocket type, such as hydraulic motors. The assembly includes a first end plate, a second end plate and a plurality of intermediate plates thereb... | 08/26/1980 |
