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 |
| 4199309 | Circular cavity discharge valve A compressor discharge valve assembly utilizing a cylindrical cavity in which is provided a discharge flow control valve and a valve stop for limiting the opening movement of the valve during operation of the compressor. The discharge valve chamber define... | 04/22/1980 |
| 4197061 | Rotary pneumatic vane motor with rotatable tubing contacted by vanes A cylindrical shaped tube freely rotatable within a housing provides the pressure chamber for an eccentrically mounted rotary seal vane type pneumatic motor with the drive actuating air moving axially through the pressure chamber.... | 04/08/1980 |
| 4187063 | Air motor with discharge through gear chamber and silencer An air motor includes an arrangement such that a part of an exhaust air from a cylinder of the air motor passes through a gear chamber containing a gear mechanism which links a gear fixed to a shaft directly connected to a rotor with a power output shaft ... | 02/05/1980 |
| 4181481 | Rotary internal combustion engine A rotary internal combustion engine includes a housing having a chamber defined by an inner surface of oval outline in which a plurality of pistons are arranged, each having a wall portion facing the internal surface. The pistons are linked to each other ... | 01/01/1980 |
| 4177024 | Vane air motor with eccentric adjustment ring and bearing ring for vane ends A pneumatically operated vane-type motor for driving medical or dental handpieces. A housing forms a rotor chamber in which a rotor is mounted, the rotor having axial slots in which radially moveable vanes are housed. An adjustment ring is positioned betw... | 12/04/1979 |
| 4175393 | Rotary vane drive with rotating cylinder A drive apparatus incorporating a rotor rotatably received within the hollow interior of a cylindrical box which is in turn rotatably received within a cylindrical chamber defined within a casing. The rotor is eccentrically positioned within the concentri... | 11/27/1979 |
| 4171939 | Arrangement for mounting a gear on a shaft An arrangement for mounting a gear on a drive shaft of a fuel pump includes a longitudinal slot dividing one end portion of the shaft into first and second cantilever sections. Shoulders formed in the slot on the cantilever sections abut a key extending t... | 10/23/1979 |
| 4149834 | Delivery valve, especially for rotary piston compressors A delivery valve, especially for a rotary piston compressor, which valve is adapted to be inserted into an opening provided in the compressor housing and extending substantially parallel to the axis of the compressor housing. The compressor housing has a ... | 04/17/1979 |
| 4144866 | Internal combustion rotary engine The disclosure is directed to a rotary engine having an annular housing and a plurality of walls disposed around the interior of the housing with adjacent walls joined by rounded corners. A plurality of sliding pistons are disposed within the interior of ... | 03/20/1979 |
| 4144005 | Rotary through vane compressor A rotary compact compressor having through vanes of fixed length slidably mounted in intersecting slots of a cylindrical rotor which rotates on an eccentric axis in a cylinder working chamber formed with a developed surface. The rotor includes an integral... | 03/13/1979 |
| 4140446 | Rotary pneumatic tool with vibration absorbing means A rotary pneumatically powered tool comprising a housing, a motor assembly mounted in the housing and comprising a pneumatic motor for rotating an output shaft, and vibration absorbing mounting means for supporting and vibration insulating the motor assem... | 02/20/1979 |
| 4139336 | Expansible chamber apparatus with pairs of cylindrical rollers An apparatus having an alternately expanding and contracting chamber comprises at least one pair of cylindrical rollers each having an exterior surface in continuous rolling engagement with the surface of the other roller of the pair, the rollers being ro... | 02/13/1979 |
| 4135602 | Selectively positioned muffler A muffler is integrally incorporated with a pneumatic tool by cooperating with the tool housing intermediate the air exhaust chamber for the air motor and atmosphere. An inwardly dished muffler shell includes an exhaust inlet for receipt of exhaust air fr... | 01/23/1979 |
| 4127369 | Pressure valve for a rotary piston compressor A pressure valve arranged in a rotary piston compressor which valve is mounted in a passage or bore of the housing casing of the compressor. The last mentioned passage is axis parallel to the rotary piston compressor axis. The valve has a cylindrical cros... | 11/28/1978 |
| 4120623 | Pneumatic vane-type motor with bearing ring for vane tips A pneumatically operated vane-type motor for driving medical or dental handpieces. A stator housing forms a rotor chamber in which a rotor is mounted, the rotor having axial slots in which rotor vanes are radially movably mounted. The rotor rotates about ... | 10/17/1978 |
| 4088428 | Discharge valve assembly for a compressor A rotary compressor having a discharge check valve and retainer assembly in which the valve is a reed type valve mounted on the retainer and the retainer having spaced locating projections for positioning the assembly in a valve chamber. The retainer has ... | 05/09/1978 |
| 4080123 | Rotary liquid pump with spaced drive shaft connection means A rotating liquid pump, especially a vane cell pump, which is equipped with a disc-shaped rotor which together with a housing encloses at the circumference rotating feed spaces and which is non-rotatably but axially movably retained on a drive shaft by me... | 03/21/1978 |
| 4077751 | End housing clamps for rotary mechanisms An improved rotary mechanism such as a rotary engine, and, more specifically, an improved clamp for securing the center and end housings of such mechanisms together. The improved clamping means include at least one elongated bracket having a convex face w... | 03/07/1978 |
| 4068987 | Pneumatic motor with muffled exhaust In a pneumatic motor that includes a vaned rotor, a rotor chamber having a gas inlet and gas outlet means, a housing and an axially extending rotor shaft to rotate in said chamber, structure to control and muffle the escape of exhaust gas comprising A. a ... | 01/17/1978 |
| 4059371 | Rotary engine stationary gear locating and timing device Disclosed herein is a rotary piston engine comprising a housing assembly including a trochoid housing and a pair of end housings aligned and secured together to define a trochoid cavity, a shaft rotatably supported in the end housings and having an eccent... | 11/22/1977 |
| 4051893 | Air curtain-projecting ventilator A ventilator adapted to project a uniform air curtain of high velocity and of high pressure. The ventilator is in the form of an elongated air pump in which a rotor shaft is mounted eccentrically within an open coil helix lining the tubular casing of a st... | 10/04/1977 |
| 4009974 | Method and apparatus for pumping viscous material An apparatus for melting and dispensing thermoplastic material comprising a hopper, a grid melter, a reservoir and a pump. The novelty of this application resides in a novel method and apparatus for forcing molten material into the pump inlet. The infeed ... | 03/01/1977 |
| 3993418 | Fluid-pressure operated actuator with follow-up transmission A fluid-pressure operated actuator arrangement has a double-acting actuator device and a control valve. A three-element differential mechanism has two of its elements respectively drivingly connected to the control valve and the actuator device, and a thi... | 11/23/1976 |
| 3988076 | Rotary vane machine with spring-biased vanes An inner component of the fluid machine has an outer circumferential surface, and an outer component has an inner circumferential surface which eccentrically surrounds the outer circumferential surface. One of the components is rotatable relative to the o... | 10/26/1976 |
| 3981647 | Pneumatic vane motor A pneumatic vane motor comprising a cylinder and a vane carrying rotor. The vanes are reciprocably guided in radial slots in the rotor, which slots have a width exceeding the thickness of the vanes. For preventing the vanes from seating flatly on the slot... | 09/21/1976 |
| 3966369 | Inlet and outlet ports and sealing means for a fluid driven motor An improved positive displacement motor suitable for use in downhole drilling at the end of a drill string and driven by fluid, e.g., liquid mud, under high pressures. The motor has a novel arrangement of inlet and outlet ports in longitudinally extending... | 06/29/1976 |
| 3963391 | Method and apparatus for controlling speed and torque of hand held air driven vane type motors A method and apparatus for controlling speed and torque of hand held air driven vane type motors is available in several embodiments. For example, one embodiment is used in tool and die work and another embodiment is used in dental work. In reference to t... | 06/15/1976 |
| 3950117 | Machine with rotary articulated pistons The present invention refers to a machine with rotary articulated pistons, which work within a cylindrical chamber. The machine could equally be a motor, compressor or pump to achieve transformations of energy.... | 04/13/1976 |
| 3941526 | Rotary engine assembly A rotary combustion engine having a completely die cast aluminum housing assembly wherein one of two end housings is rigidly secured and sealed to one open end of an outer barrel housing in which either one rotor housing or two or more rotor housings sepa... | 03/02/1976 |
| 3934657 | Dual safety control means for a power tool A safety control means for a portable power tool, such as a pneumatically driven hand grinder, wherein fluid supply and discharge passages are provided in the support handles of the tool and are respectively connected to the fluid inlet and outlet of the ... | 01/27/1976 |
