Abstract: In a dynamoelectric machine which includes a rotor and a stator, an integral magnetic isolation and cooling system. A housing is disposed about the machine, the housing being fabricated of magnetically permeable material to define a flux path therethrough. A cooling jacket is sandwiched between the housing and the stator. The cooling jacket has coolant passages therein and is fabricated of non-magnetic material to isolate the flux path between the housing and the stator.

Abstract: An apparatus for opening a book having a plurality of pages held in assembled relation with adjacent foredges substantially in contact with one another. The apparatus includes a rotatable pin for initiating separation of pages of the book by contacting and entering the book at one end of the adjacent foredges to thereby cause one of the pages to be separated from a next adjacent of the pages at a selected location in the book. Additionally, at a ribbon inserting station, a ribbon inserter can be provided to insert a ribbon into the selected location in the book between the one of the pages and the next adjacent of the pages. The apparatus may also include a knife assembly downstream of the rotatable pin which is adapted to maintain separation of the pages upon entering the book at the selected location for any purpose such as accommodating insertion of a ribbon by the ribbon inserter. With this arrangement, the book opening apparatus is well suited for opening a book without damage to the pages thereof.

Abstract: A device for use in laser surgery has a first jaw and a second jaw pivotable to engage the first jaw to clamp tissue therebetween. The first and second jaws may be manually pivoted and secured together for clamping. The second jaw has a slot therethrough which is open to the first jaw to provide a guide for laser cutting. A third jaw is also provided for clamping tissue between it and the first jaw, said third jaw also having a slot therethrough and open to the first jaw. The jaws are pivoted to the distal end of a sleeve with a hollow interior. Control rods extend through the sleeve interior and connect to the respective jaws in an overcenter configuration. The control rods may, at the proximal end of the sleeve, be manually manipulated in order to pivot the jaws for manipulation at the surgical site.

Abstract: A fuel drain system for use in a fuel pump for an aircraft fuel tank or the like which includes a housing and a pump cartridge positionable in the housing for removal therefrom. A drain plug is removably mounted on and projects from the pump cartridge for draining residual fuel from the cartridge prior to removal of the cartridge from the housing. A stop is located in a path of movement of the projecting drain plug to prevent removal of the pump cartridge from the housing unless the drain plug is removed from the pump cartridge. This provides for verification that the main inlet closure to the fuel pump has been closed and, thus, prevents massive fuel leakage.

Abstract: A signature opening apparatus for receiving one signature at a time from a source of signatures fed to the apparatus in a steady stream. The apparatus includes an opening drum mounted for rotation on a shaft for delivering opened signatures to a continuous signature carrying chain. It utilizes at least one gripper assembly mounted for rotation with the opening drum for opening one signature at a time. The apparatus also includes a timing mechanism to allow the gripper assembly to initiate gripping of signatures at a first preselected point, to fully grip signatures at a second preselected point and to release signatures at a third preselected point. The gripper assembly includes an elongated countinuously curved finger having a first end mounted for rotation relative to the opening drum and a second end normally projecting beyond the opening drum. The apparatus also includes a seat as a part of the gripper assembly to be engaged by the second end of the finger.

Abstract: When an electrically conducting material is subjected to an alternating magnetic field local changes in the magnetic field adjacent to the conducting material are detected by a detector comprising a magnetoresistor or Hall crystal which generate an electrical signal when subjected to the magnetic field.The process and apparatus can be used to identify, classify and locate electrically conductive material.The detectors can be of the order of a few millimeters in size and so can be used to detect local changes in the magnetic field over correspondingly small areas of the material.The invention is particularly useful in identifying coins used in coin operated machines.

Abstract: A calorimeter of the liquid flow type. The calorimeter includes a chamber in communication with a medium to be delivered to the chamber at a steady rate of flow. It also includes a heat exchanger having a liquid flowing therethrough at a steady rate of flow in a non-recirculating manner. The chamber is submerged within the heat exchanger and formed so as to release the heating medium from the chamber into the liquid as the liquid is flowing through the heat exchanger. The calorimeter also is capable of measuring an increase in temperature from a first point to a second point as the liquid is flowing at a steady rate through the heat exchanger. As a result, the calorimeter can measure the heating value of a heating medium at preselected intervals or continuously.

Abstract: A mechanical mode shifter is provided including an input and first and second outputs, which rotate simultaneously during a first portion of operation. The first output is coupled to the input for providing a continuous drive to the first output. Timing means including sector gears are coupled to the first output. At a preselected point in time, the timing means cause the engagement of the sector gears with other gears for the purpose of disengaging a jaw clutch and decelerating a shaft on the second output, such that the second output is driven cyclically while the first output is driven continuously.

Abstract: A power transmission belt having a compression section defined by a plurality of portions having different contents of transversely extending short fibers therein. In one form, the different portions of the compression section are separated by a bonding layer. In one form, where the difference between the fiber content of the respective layers is minimized, the bonding layer is omitted. A number of different configurations of the power transmission belt incorporating such different compression section portions is disclosed.

Abstract: When operating a synchronous machine as a synchronous generator, a suppression resistor is required across the main generator field. However when operating the synchronous machine as an induction motor, a current is induced in the main generator field which is typically greater than the current carrying capability of the suppression resistor.In order to overcome the foregoing problem, the present invention provides a centrifugally activated switch for mounting on a rotor and which provides an alternate current path for the induced current.

Abstract: A shock absorbing overtravel stop apparatus which includes a rotatable drive shaft 10, a screw shaft 15 driven by the drive shaft 10, and a nonrotatable travelling nut 30 threaded on and moveable axially along the screw shaft 15. At one end 28 of the screw shaft 15, the apparatus is provided with a rotating stop 38 and a stationery stop 40. At the other end 20 of the screw shaft 15, there is provided a bearing housing 21, journalling the screw shaft 15 for rotation and mounting the screw shaft for axial movement along the axis. The travelling nut 30 is moveable in one direction to engage the stops 38, 40 whereupon the rotary motion of the screw shaft 15 is terminated. The travelling nut 30 is also moveable in the other direction into contact with the bearing housing 21 to exert an axial force upon the screw shaft 15 such that the screw shaft 15 moves axially to engage the stops 38, 40 whereupon the rotary motion of the screw shaft 15 is terminated.

Abstract: A centrifugal pump with hydraulic thrust balance and tandem axial seals. The centrifugal pump has an impeller with front and rear axial seals operating in unison to either reduce or increase the size of gaps therebetween. The gaps are of a minimal dimension to minimize leakage. The rear axial seal is located at the tip of the impeller with the front axial seat located either at the impeller eye or radially outwardly thereof. Hydraulic thrust balance is achieved and continuously maintained by axial movement of the impeller shaft and impeller to modulate the gap at the rear axial seal and, thus, control the value of an effective pressure acting on the back side of the impeller whereby an outward thrust force resulting therefrom counterbalances an inward thrust force resulting from pressure acting on the front shroud of the impeller. A clearance at the rear of the impeller communicates with suction pressure through a restricted passage.

Abstract: A pressure control system for a storage tank, including a supply of working fluid under pressure. A conduit establishes fluid communication between the supply and the storage tank. A supply regulator is provided in the conduit for maintaining a substantially constant pressure to the storage tank. A tank regulator is provided in the conduit between the supply regulator and the storage tank for selectively admitting the substantially constant pressure as a function of temperature to the storage tank. A control selectively operates the tank regulator in response to given conditions, such as temperature conditions, in the storage tank.

Abstract: Disconnection of a fluid conduit from a fluid fitting 38 and electrical conduit from apertures 28 in a fluid pressure sensing switch when servicing is required is avoided in a construction wherein a switch module 12 is secured to a base 10 mounting a fluid pressure receiving fitting 38 and electrical conduit receiving apertures 28 by only two threaded fasteners 24, allowing the module 12 to be separated readily from the base 10 without disturbing conduit connections.

Abstract: An engine override control for an engine (10) which drives a vehicle transmission (18) and an auxiliary variable displacement pump (20) and which is operable to increase engine speed beyond a set engine speed command to increase flow from the auxiliary pump which has reached maximum displacement at said set engine speed under the control of flow-compensator control (60). A valve (31) controls the delivery of fluid from the pump to a load (34) and associated orifices (42a) and (43a) establish a pressure differential between the pressure of fluid supplied by the auxiliary pump (20) and the operating pressure applied to the load. A cylinder (80) responsive to the pressure differential acts on a control member (12) for the engine governor to increase the speed of the engine when the pressure differential falls below a predetermined value.

Abstract: A gas analysis apparatus including a sorption bed and a receiver normally spaced apart from the sorption bed. A given flow path is defined between the sorption bed and the receiver for directing a gas to be analyzed across the sorption bed for adsorption thereby in an adsorption mode of operation of the apparatus. A drive relatively moves the sorption bed and the receiver closer together from their spaced apart condition to produce a volume reduction of the defined, given flow path across the sorption bed in a desorption mode of operation of the apparatus. A heater selectively heats the sorption bed to desorb the adsorbed gas from the bed into the volume reduced flow path. A gas analyzer is connected to the receiver for analyzing the desorbed gas.

Abstract: A system of preserving fresh produce in a refrigerator displayed for observation and selection by the public, such as in a grocery store. Moisture is applied to the articles, in the form of an extremely fine mist, made up of particles in the range of about 75-150 micron diameter, suspended in air, and slowly falling. The moisture applied to the produce articles is only film-thick so as to minimize flow-off from the articles. Producing the mist includes selectively, hydraulic pressure means, or air pressure means. The mist is controlled by automatic on-off control means and is produced by misting nozzles centrally positioned above the shelf means for supporting various produce articles within the refrigerator display means.