Abstract: A system for obtaining samples of the exhaust of a combustor for subsequent constituent level analysis and a method of determining constituent levels. The system includes inlets (10,26) for alternately delivering exhaust or ambient air to the system. System outlets (56,58) are sealingly coupled to sample receiving and collecting containers (60,62) and a pump (32) is connected to the inlets (10,26) to pressurize gases entering the system. The pump has an outlet (32) to an air cooled heat exchanger (38) which is cooled by a fan (40) to condense water vapor in the gases. The heat exchanger is connected by plumbing (48,50,52,64,66) to the system outlets (56,58) and a chemical gas dryer (54) may be connected in the system when ambient air is entering the system inlet (26). The method of analyzing the exhaust includes the steps of partially filling a sample collecting container with dried air and thereafter directing the exhaust to be analyzed into the sample collecting container.

Abstract: A heat exchanger (10) having a plurality of longitudinally-extending tubes (16) disposed within a shell (12) includes an elastomeric end plate (18) and means (22) for compresing the elastomeric end plate (18) and expanding the plate in the longitudinal direction and internal vibration-damping baffle plates (28).Conventional metal heat exchangers of brazed construction are prone to cracking and failure. More recently, heat exchangers having an end wall assembly comprising an elastic medium disposed between movable pressure plates has been proposed. Among other problems, the movable pressure plates are required to have clearance holes for the free passage of tubes therethrough and are consequently severely limited to the number and density of tubes that may be accommodated in a heat exchanger of such a design.

Abstract: In the operator's station of many construction vehicles, there is a critical lack of space in which to mount the control levers (12) used to operate the vehicle. The use of mechanical linkages and motion translating devices between the control lever (12) and the actuator has required complicated mechanisms and excessive hardware for the mounting and positioning of the respectively connected components. The mounting apparatus (10) of this invention overcomes these problems by employing a detent mechanism (38) that functions as a rotational positioner between the control lever (12) and an actuating switch (60) assembly as well as an axial positioner used in the mounting of the respective components. The mounting apparatus (10) allows the control lever (12) and the actuating switch (60) to be mounted together for rotation about a single axis (X) to provide a very axially compact mechanism.

Abstract: Anti-wheel spin control systems are useful, for example, in industrial off-road vehicles. It is desirable that such systems operate automatically and not be unduly influenced by false slip signals caused by steering of the vehicle. It is further desirable that the operability of the control be readily determined by the operator. The instant anti-spin control includes an apparatus for producing a slip signal having a value responsive to the difference in rotational velocity between the vehicle wheels, and for producing a test signal. A processor receives the slip signal and test signal, compares the slip signal value with a first predetermined reference value in response to receiving the slip signal in the absence of the test signal, and compares the slip signal value with a second predetermined reference value in response to receiving both the slip signal and the test signal.

Abstract: A filled piston (10) has a tube (19) extending axially through the core (13) of filler material. The tube (19) provides the passage (23) through which hydraulic fluid passes to lubricate the bearing surfaces of components associated with the piston (10). This eliminates the problem of the hydraulic fluid eroding the filler material and thus the need for visual inspection of the passage through the piston.

Abstract: Roller suspension apparatus are useful for example in belted vehicles. The heretofore known roller suspension apparatus impart a shear force to the spring due to the geometry and the relationship between the roller mounting arms, the walking beam, and the pivot pins to which the arms and beam are pivoted. The subject roller suspension apparatus has a pair of arms and a force transmitting beam pivotally connected to a single pivot shaft. The mounting surfaces to which a pair of springs are attached are then arranged relative to the pivot shaft such that substantially only compressive forces are imparted to the springs. Thus, the full shock absorbing potential of the springs is fully utilized.

Abstract: Devices have been used to compensate for misalignment between adjacent members and establish subsequent aligned assembly. These devices used tight tolerance, compound eccentric bushings or offset frusto-conical surface in attempting to provide a fixed aligned position. These devices are expensive and difficult to align. The subject bolt-on dowel provides a simple inexpensive solution to positioning of a first member relative to a second member. The bolt-on dowel includes a cylindrical spacer slidably fitted within a bore of the first member with the first end being in abutment with the second member, and a fastening member securing the spacer to the second member in a fixed position.

Abstract: The invention discloses a process of forging a sprocket segment for a track-type vehicle undercarriage. The forging process produces sprocket segments that conform to very restrictive tolerances without the necessity of additional machining or finishing.The process includes heating a metal billet (5') in an electric furnace (60), rough-shaping the billet (5'), then forging the billet (5') in a die (62) to form a sprocket segment (5) having a size and shape substantially equal to the desired finished shape of the segment (51). The forged sprocket segment (5) is trimmed and then placed in a coining die (8) wherein at least two nonparallel surfaces (A,B,C) are formed to a desired finished dimension.The invention also includes an apparatus (8) for forging a sprocket segment to a desired finished dimension. The apparatus (8) includes an upper die member (80), a lower die member (8'), and a transversely-moveable die member (82).

Abstract: A weld joint structure (12) is provided for a flexible coupling (10) having an inner hub (38), an outer cup (40), and an elastomeric ring (42) for torsional vibration protection of a drive train (14). The outer cup (40) defines an integral radially inwardly disposed tubular portion (64) having an internal seat (68), and an adapter member (70) of different ferrous material composition has an external seat (74) that is connected to the cup (40) by an annular weld joint (78). Preferably, the cup (40) abuts a shoulder (76) on the adapter member (70) where the weld joint is located, and a reverse bend transition portion (62) on the cup (40) functions with the tubular portion (64) to minimize bending loads on the weld joint.

Abstract: A method and apparatus is provided for manufacturing a reinforced elastomeric hose. Other reinforced hoses are prepared in individual stations for particular parts of the reinforced hose consequently requiring large amounts of manufacturing floor space. Still other hoses that are made while utilizing small amounts of floor space do not provide a high strength braided reinforcement member. A reinforced hose (10) is produced by continuously braiding a tubular reinforcement member (16) on a mandrel (50), progressively removing the reinforcement member from the mandrel (50), and at approximately the same axial location extruding a liner (26) and cover (28) onto the reinforcement member (16) adjacent the mandrel (50). After leaving the extruders (33,34), the formed hose (10) is pulled at a linear rate faster than the hose (10) is being produced in order to change the braid angle of the braided reinforcement member (16) to a predetermined smaller braid angle.

Abstract: A power drive (10) for providing from a single speed range input drive motor (12) a dual speed range output and a braking function. The selective control of the output shaft (13) is effected through the use of only a brake and a clutch (27,28) under the control of pistons (33,40) and a biasing spring (38). The mechanism provides the desired control by suitable application of fluid pressure to associated piston chambers (34,41) thereby effecting different operating conditions and connections of the gearing (15,16,17,21,22) of the drive.

Abstract: A valve assembly (16) for use in a fluid system (10) includes a flow control valve (82) which controls fluid flow between a fluid inlet port (34) and a fluid supply passage (36) in response to the load requirements. A main control spool (96) is selectively movable between a neutral position and first and second actuated positions. A load sensing passage (78) communicates a load signal from an actuator (26) to the spring chamber (50) of the flow control valve (82). A drain passage (80) communicates the load sensing passage (78) with the reservoir (14) when the main control spool (96) is in the neutral position. A blocking mechanism (138) blocks the load sensing passage (78) when the main control spool (96) is in the neutral position and opens one of the inlet port (34) and the supply passage (36) to the spring chamber (50) so that the flow control spool (82) is held in an open position.

Abstract: A method and apparatus for abrasively machining a workpiece (12) includes the establishment of an eddy-current in the workpiece (12) at an area (33) where an abrasive tool (14) contacts the workpiece (12).Cooling liquid is also directed over the working area.

Abstract: In a track laying vehicle (10) a track tensioning apparatus wherein a track engaging idler (20) wheel is mounted to a cross member (82) for adjustment to tension the track by a piston (68) and cylinder (62). The cross member (82) is in turn adjustably (106) mounted to opposing sides (26,27) of the vehicle track frame. Acting in conjunction with the track tensioning apparatus an accumulator (130,146) is provided and is in fluid communication with the piston (68) and cylinder (62). The accumulator (130,146) exerts a backpressure upon the fluid so that the idler (20) may recoil in response to excessive tension or shock upon the track.

Abstract: A fluid system (10) having a directional control valve (12) operated by a pilot valve (11) having a manually operable control handle (22) for selectively controlling a fluid motor (14) in positioning a load (17). The pilot valve (11) includes a spool (31) cooperating with associated portions of the pilot valve to provide a pressure regulated pilot signal to the directional control valve during normal operation of the system. Spool (31) includes a recess (98) which is placed in communication with the high pressure portion of the motor cylinder (16) during a dead engine condition by manipulation of handle (22) to provide pressure regulated delivery of the fluid from the motor (14) through recess (98) and to the conduit normally controlling the directional control valve for effecting a controlled lowering or retraction of the load. A single pilot valve is utilized for effecting the pressure regulated control in both normal and dead engine conditions.

Abstract: A multi-fuel engine is capable of running on lead free gasoline, leaded gasoline, and liquid propane. The engine has a valve seat and an exhaust valve. The valve seat has a seating surface. The exhaust valve has an axis, a seating face, and is of dimensions sufficient for seating of the valve on the valve seat. The seating surface has a width in a range of about 2.30 to about 2.90 millimeters and defines an included angle in a range of about 110.degree. to about 130.degree. relative to the axis of the exhaust valve. Apparatus forcibly urges the seating face against the seating surface at a force in a range of about 200 to about 245 Newtons.

Abstract: Extruded reinforced hoses are useful in fluid systems which operate at high pressures. Other reinforced hoses are prepared in individual stations for particular parts of the reinforced hose consequently requiring large amounts of manufacturing floor space. Still other processes require extruding a hose on a mandrel and subsequently applying a fabric reinforcement member. In these processes, the length of the hose is limited by the length of the mandrel. The present apparatus produces an extruded reinforced hose (10) by braiding a metal reinforcement member (16) on a mandrel (42) and extruding a liner (21) and cover (22) at approximately the same location as the member (16) leaves the mandrel (42). The formed hose (10) is pulled at a linear rate faster than the hose (10) is being produced in order to change the braid angle of the braided member (16) to a predetermined selected braid angle and holding for subsequent curing.

Abstract: The performance of prior automated welding systems has been limited by their inability to independently track and weld and by their inability to accurately determine the groove profile. The adaptive welding system disclosed herein includes a weld torch (20) adapted to be controllably positioned in at least two dimensions, and means (28,38) for tracking a workpiece seam (12) to be welded. The tracking means (28,38) is pivotably connected to the weld torch (20). Means (19,40) for pivoting the tracking means (28,38) relative to the weld torch (20) is included to permit both the tracking means (28,38) and the weld torch (20) to be independently maintained over the seam (12). The tracking means (28,38) monitors the seam (12) by optical triangulation of a rotating laser beam (60) projected against the workpieces. This rotating laser beam (60) crosses the seam twice during each cycle of the beam (60).

Abstract: A prime mover (10) includes a housing (12), an end cover (18) secured to the housing (12), a driving shaft (22) mounted in the housing (12) and a driven member (49) mounted external of the end cover (18). A coupling mechanism (48) couples the driving shaft (22) to the driven member (49) to provide an arrangement that allows the removal of the driving shaft (22) without having to remove the end cover (18) and other associated elements. This provides a substantial time savings when removing a driving shaft (22) from a prime mover.

Abstract: A digital processor implemented electronic governor for engine-generator units including a first control loop for producing a speed error and controlling fuel delivery setting as a function thereof and a second control loop for detecting rack error and producing a field excitation current control signal as a function thereof. Power dips and overruns are voided by modifying rack error as a function of engine acceleration. Means are provided for developing speed errors and rack control signals despite a breakdown in the rack position indicator. Open loop lower power setting controls are provided. Wheel-slip control, power limiting and variable acceleration functions are provided.