Abstract: A heat exchanger of a ventilating system, including a plurality of heat exchanging plates which are laminated at a predetermined interval, a first heat exchange member which is laminated among the heat exchanging plates and is formed in a mesh type to increase turbulence of the outdoor air which flows while being attached on a first air path through which outdoor air passes and a second heat exchange member which is laminated among the heat exchanging plates crossed with the first heat exchange member and is formed in a mesh type to increase turbulence of indoor air which flows while being attached on a second air path through which the outdoor air passes can improve heat transfer performance by increasing turbulence of air by positioning a mesh type heat exchange in a air path through which outdoor and indoor air passes.

Abstract: Method and device for providing a plate heat exchanger (1) having a number of corrugated plates (2). Between the corrugated plates (2) first and second flow channels (7, 8) are arranged, which first flow channels (7), via first inlet openings (11) and first outlet openings (12), are connected essentially parallel to in-going and out-going junction channels (13, 14). The plates (2) are fitted to each other in pairs, forming cells (15) including an inner spacing element (16) welded to and between the plates, and outer spacing elements (17) welded to the plates (2) on the sides of the plates (2) facing away from each other, along at least two of the edge parts (3–6). The cells (15) are stacked against each other and joined together by welding of the outer spacing elements (17), and in that said in-going and out-going junction channels (13, 14) are welded to said first inlet openings (11) and first outlet openings (12) respectively.

Abstract: A heat exchange unit is composed of rectangular heat transfer panels with terraced flat portions, combined in parallel and integrally with each other to form first and second spaces. Outer and inner reinforcement members having respective serrations are welded to the panels so that the serrations are inserted into gaps between the heat transfer panels. The outer and inner reinforcement members are made of the same material as the heat transfer panels and have a larger thickness than the heat transfer panel, so as to bear high heat input given during the welding. The heat input caused by welding can be increased to enable portions of the heat transfer panels to be melted rapidly.

Abstract: A device for distributing waste heat from a heat source evenly across an exterior surface of an enclosure is disclosed. The device includes a first layer of material that has a high thermal conductivity along a first plane. One or more layers of material that include a controlled thermal conductivity along a second plane are connected with the first layer. At least one of those layers has a low thermal conductivity (e.g. a thermal insulating material) in the second plane and that layer is positioned between the heat source and the enclosure so that heat flow through that layer is substantially inhibited in the second plane and a majority of the waste heat is thermally transferred through the first layer along the first plane to the exterior surface where the waste heat is uniformly distributed thereby reducing hot spots on the exterior surface which can cause user discomfort.

Abstract: A vehicle air conditioning system secures an appropriate temperature difference in the air blown through vertically arranged air ducts when the system is in a bi-level mode. A hot air inlet is disposed above a cool air inlet. A face opening is disposed at an upper location while foot openings are disposed at a lower location. A blow mode-changing door for opening and closing both the openings is a butterfly type door. The blow mode-changing door is pivotally disposed in a door housing. In the bi-level mode in which the blow mode-changing door opens both the foot openings and the face opening, a bi-level mode bypass passageway for introducing cool air from the cool air inlet into the face opening is defined between an extremity of the blow mode-changing door and the inner wall surface of the door-housing portion.

Abstract: A device for sealing and anchoring within a tubular member. The device comprises a top swage member disposed within the tubular member, with the top swage member having a longitudinal center of axis. Also included is a first sealing member disposed about the top swage member, with the first sealing member containing a first plurality of circumferential ribs disposed about the first sealing member. The device may also include a second sealing member that is attached to the first sealing member, with the second sealing member containing a second plurality of circumferential ribs disposed about the second sealing member. A bottom swage member is disposed within the second sealing member, with the bottom swage member having a longitudinal center of axis. The device further comprises a setting apparatus for driving the top swage longitudinally downward relative to the top swage's longitudinal center axis and for driving the bottom swage longitudinally upward relative to the bottom swage's center axis.

Abstract: Well completion cement may be pumped through a side pocket mandrel that includes parallel rows of filler sections to exclude cement from void space within the side pocket tube. The filler sections are drilled with cross-flow jet channels and surface upsets to stimulate scrubbing turbulence by well working fluid behind a cement wiper plug. The wiper plug includes leading and trailing groups of wiper discs secured to an elongated shaft. The two wiper groups are separated by a distance that permits the leading seal group to gain traction seal before the push seal on the trailing wiper group is lost. A spring centralizer spans a center section of the shaft between the two wiper groups to maintain axial alignment of the shaft as the plug traverses the length of a mandrel.

Abstract: A gravel pack completion with fluid loss control and fiber optic wet connect. In a described embodiment, a system for completing a subterranean well includes multiple assemblies installed in a wellbore. Each assembly has a fiber optic line. The fiber optic lines are operatively connected to each other after the assemblies are installed in the wellbore.

Abstract: This invention is generally directed towards a system designed to assist the rig operator by alerting him/her that the air pressure is too low to be using the drum clutch, to provide a log for studies on rig operation technique, and to provide a training tool for rig operators. If the pressure on the clutch bladder is above a predetermined range, the clutch is allowed to engage. If the signal is below the range, the clutch is assumed to have not been engaged. If the signal is within the range, the clutch is not allowed to engage and the rig operator is notified of the problem.

Abstract: The present invention provides a system for determining downhole conditions including a time domain reflectometer (172) that is operable to generate a transmission signal and receive a reflected signal. A tubular (192) is positioned downhole in a downhole medium (214, 216, 218, 220, 222) and a waveguide (186), which is in electrical communication with the time domain reflectometer (172), is operably contacting the downhole (214, 216, 218, 220, 222). The waveguide (186) is operable to propagate the transmission signal and operable to propagate the reflected signal that is generated responsive to an electromagnetic property of the downhole medium (214, 216, 218, 220, 222).

Abstract: The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are described that provide for the efficient installation a cemented steel cased well wherein the drill string and the drill bit are cemented into place during one single drilling pass down into the earth. The normal mud passages or watercourses present in the rotary drill bit are used for the second independent purpose of passing cement into the annulus between the casing and the well while cementing the drill string into place during one single pass into the earth. A one-way cement valve is installed near the drill bit of the drill string that allows the cement to set up efficiently under ambiently hydrostatic conditions while the drill string and drill bit are cemented into place during one single drilling pass into the earth.

Abstract: A system and method for communicating information between downhole equipment in a wellbore and surface equipment, comprising a first device disposed in a wellbore for receiving at least one first signal and transmitting at least one second signal. A surface device is used for receiving the at least one second signal and transmitting the at least one first signal. At least one repeater is disposed at a predetermined location in a wall of the wellbore for receiving and retransmitting the first signal and the second signal. A method for communicating information between downhole equipment in a wellbore and surface equipment, comprises deploying a tubular member in the wellbore, the tubular member having a transmitter disposed therein; disposing at least one signal repeater at a predetermined location in a wall of the wellbore; and transmitting a signal from the transmitter to a surface receiver through the at least one repeater.

Abstract: A pad mounted resistivity imaging device includes at least one transmitter and two or more arrays of receivers. Analysis of the received signals is done using either amplitude and phase differences between the arrays of receivers, or by analyzing amplitude and phase differences between the transmitters and the receivers. With operating frequencies in excess of 10 MHz, high resolution images of boreholes are obtained.

Abstract: The invention relates to enhancing the conductivity of fractures in a subterranean formation so as to enhance fluid flow therethrough. In one embodiment, the present invention provides a method comprising: providing a proppant matrix composition, the proppant matrix composition comprising at least a plurality of proppant particulates and at least a plurality of composite particles, the composite particles comprising a degradable material and a filler material; introducing the proppant matrix composition to the fracture so as to form a proppant matrix in the fracture; and allowing the degradable material of the composite particles to degrade so as to form at least one void in the proppant matrix.

Abstract: Methods for performing wellbore operations using a treating fluid that includes zeolite, an activator, and an organic acid or salt thereof. The treating fluid used in the methods includes a zeolite having a mean particle size that is less than or equal to 100 microns.

Abstract: Method and apparatus for stimulating a subterranean formation that is penetrated by a well bore in fluid communication with the formation. At least one length of propellant is assembled with at least one shaped explosive charge that is aimed axially along the well bore toward the propellant. Detonation of the explosive charge ignites the propellant and any successive explosive charge positioned in the well bore. Detonation of the successive explosive charge ignites the next successive length of propellant and next successive explosive charge.

Abstract: A high energy gas fracturing device, adapted to be lowered into a well. The device comprises a closed tube made of strong material, sized to fit into the well and having at least one sidewall, which defines a set of openings. A set of closure elements seal the openings in a water-tight manner. Also, a charge of propellant is located in the closed tube, the charge achieving best performance if kept dry. Finally, an ignition element contacts the charge.

Abstract: The present invention is directed to a method of increasing hydrocarbon production in an existing well in a hydrocarbon reservoir. The method includes the steps of forming a substantially horizontal transverse fractured wellbore that intersects the existing well and injecting a fluid remote from the existing well so as to form a fluid front that sweeps the hydrocarbons into the horizontal transverse fractured wellbore. Successive fractures can be sealed to control propagation of the fluid front and delay infiltration of the fluid into the production.

Abstract: Embodiments include providing a gas lift system comprising production tubing disposed within a wellbore, the production tubing capable of allowing fluid flow in a first direction from outside the production tubing through a wall of the production tubing to inside the production tubing to introduce a gas into the bore of the production tubing, while preventing fluid flow in a second direction from inside the production tubing through the wall of the production tubing to outside the production tubing. In one aspect, fluid flow in the second direction is prevented by operation of at least two valve members disposed within a side pocket of a side pocket mandrel in the production tubing. At least one of the valve members is capable of preventing fluid flow in the second direction even when the other valve member is removed from the wellbore or is at least partially inoperative.

Abstract: A safety trip button (12) is described for a weight-set downhole tool. The button operates between the tool body (36) and a sleeve (34) of the tool, locking them initially together. When the tool reaches a selected formation (44) in a well bore, the button engages the formation (44) which unlocks the body and sleeve. The button is kept in the unlocked position by virtue of the formation while the tool is set. The button prevents premature setting of the tool and finds application on weight set tools such as packers and circulation tools.

Abstract: Apparatus for and method of radial expansion of a tubular member, with embodiments of the apparatus including an expander device, for example an expansion cone, which has a driver device either attached to it or integral therewith. The driver device can be a pump for example, where the pump creates a differential pressure across the expander device to cause it to move.

Abstract: A control line can be positioned in a downhole completion. For example, the control line can be deployed in a protected position along a stinger to reduce the potential for damaging the control line during installation, removal or operation.

Abstract: An apparatus for releasably clamping and holding a member for wellbore operations, the apparatus having a main body, two opposed clamping apparatuses in the main body, the two opposed clamping apparatuses spaced-apart for selective receipt therebetween of a member to be clamped therebetweeen, each of the two opposed clamping apparatuses having a mount and piston apparatus movable within the mount, the piston apparatus selectively movable toward and away from a member to be clamped, two legs, the legs spaced-apart and each leg with an upper end and a lower end, each lower end connected to the main body, and each leg comprising an outer leg portion and an inner leg portion, the inner leg portion having part thereof movable within the outer leg portion to provide a range of up/down movement for the main body.

Abstract: Systems and methods for positively closing off a section of wellbore and, thereby providing reservoir control. Systems and methods are described for selectively closing off a section of a wellbore to fluid communication. The wellbore completion section may then be reopened to fluid communication upon reconnection of the upper completion section to the lower completion section. Advantageously, the systems and methods of the present invention generally preclude fluid communication between the annulus of the upper completion section and the flowbore of the lower completion section until the lower completion section is closed off to fluid flow.

Abstract: Apparatus and methods are described that are particularly suited for creating a seal in a borehole annulus. In one embodiment, an outer surface 10s of an expandable conduit 10 is provided with a formation 20 that includes an elastomeric material (e.g. a rubber) that can expand and/or swell when the material comes into contact with an actuating agent (e.g. water, brine, drilling fluid etc). The expandable conduit 10 is located inside a second conduit (e.g. a pre-installed casing, liner or open borehole) and radially expanded. The actuating agent can be naturally occurring in the borehole or can be injected or pumped therein to expand or swell the elastomeric material to create the seal.

Abstract: Explosion suppresant container, for use in suppression of deflagrative explosions and other like events involving combustion associated with rapidly moving gases, comprising a container which, in use, contains suppressant, an outlet through which suppressant can exit the container progressively and be atomised into droplets and an inlet thorugh which air can enter the container and the shape of said container being such that, in use, the pressure of the explosion wind in the region of the outlet is less than that in the region of the inlet so that suppressant is driven out of the outlet into the explosion wind.

Abstract: A new and improved remote trigger actuating mechanism for a power tool comprises an elongated handle or pole which is provided with a handgrip upon a rear end portion, while a mounting bracket, into which a forward end portion of the elongated handle or pole is fixedly engaged, is fixedly mounted upon a rear end portion of the power tool as a result of being bolted directly thereto by suitable bolt fasteners. A spring-biased sleeve member is concentrically disposed about the elongated handle or pole, and a trigger actuator linkage member has a rear end portion thereof fixedly mounted upon the spring-biased sleeve member while a forward end portion of the trigger actuator linkage member is provided with a hooked portion which is adapted to engage the trigger mechanism of the power tool.

Abstract: A system for drilling a substantially horizontal borehole, comprises a rotating drill string extending from a surface system to a location in the horizontal borehole, the drill string having a drill bit at a bottom end. A rotary steerable system in the drill string proximate the drill bit is adapted to direct the rotating drill string toward a desired exit point. In another aspect, a method for drilling a substantially horizontal borehole from a surface location to an offshore exit location, comprises drilling a borehole using a rotary steerable system to direct the borehole along a predetermined trajectory toward the exit location. The borehole is reamed from the surface location toward the exit location while recovering a drilling fluid at the surface location.

Abstract: An apparatus and method for use in the off-line make-up of drill pipe stands on drilling rigs used in the exploration and production of oil and gas reserves are disclosed. The disclosed invention is a pipe handling system in which a section of the V-door ramp attached to a drilling rig structure pivots to allow one or more joints of drill pipe to be placed in a vertical position. Through use of an off-line roughneck in conjunction with an off-line drill pipe elevator, the joints of drill pipe held in the vertical position via the pivoting pipe handler of the present invention can be connected together, connected to additional joints of drill pipe, and placed in a racking board to be stored until they are subsequently connected to the drill string. The use of the pivoting pipe handler of the present invention allows stands of drill pipe to be “made-up” without the need to interrupt drilling operations and, thus, significantly reduces the amount of time required to drill a borehole.

Abstract: The invention relates to a drilling apparatus and a method for introducing a drilling element into the soil. The drilling element is rotatably and slidably supported on a mast, with a torque being applied through a rotary drive located on the mast. In order to support the torque an additional turning device is fixed to the mast, which can be engaged with the driven drilling element.

Abstract: An ice auger covering apparatus includes a housing that has a bottom wall and a peripheral wall that is attached to and extends upwardly from the bottom wall. The housing has a break therein so that the housing includes a first portion and a second portion. The first and second portions are hingedly coupled together and biased toward each other in a closed position. A plurality of blade engaging members is provided. Each of the blade engaging members is configured to receive an edge of a bottom blade. The blade engaging members are attached to an inner surface of the peripheral wall. A pointed end of the ice auger is extendable into the housing and bottom blades of the auger engaged with the blade engaging members so that the housing covers the pointed end and the bottom blades.

Abstract: A drill bit has a pair of cutting teeth with cutting elements extending from a cutting end portion of the drill bit. Each cutting tooth extends radially, outwardly parallel to a longitudinal axis of the drill steel. The cutting teeth are juxtaposed with one another on the longitudinal axis. Each cutting tooth includes a plurality of raised cutting elements connected to a plurality of lowered edge portions. The cutting elements produce concentric circular channels in the working surface of a rock formation, as the drill bit rotates during the cutting operation. The drill bit also includes a pocket for accumulating and removing dislodged material during the cutting operation.

Abstract: A landing shock absorbing device 18 disposed in a foot mechanism 6 of a leg of a robot, wherein an inflatable bag-like member 19 (a variable capacity element) is provided at a ground-contacting face side of the foot mechanism 6. The bag-like member 19 is constructed of an elastic material such as rubber and has a restoring force. An interior portion of the bag-like member 19 is communicated with the atmosphere side through a flow passage 20. During a landing motion of the leg, the bag-like member 19 makes contact with the ground to be compressed, and the air in the interior portion thereof flows out into the atmosphere through the flow passage 20, so that its outflow resistance is generated. Accordingly, a landing shock is reduced. In a lifting state of the leg, the restoring force of the bag-like member 19 allows the bag-like member 19 to be inflated while the air flows into the interior portion thereof.

Abstract: An apparatus and assembly method including a sprocket hub and a locking collar for go kart vehicles and other land vehicles with drive axles is provided. The present invention eliminates the need for two locking collars on either side of the sprocket hub. The invention further provides a lightweight sprocket hub with a hub neck portion adapted to receive a single locking collar. The sprocket hub fits loosely on the drive axle. The fin-like sprocket hub arms and sprocket hub extensions each have sprocket connection holes used to connect the sprocket hub to a drive sprocket. The locking collar engages the sprocket hub neck portion by means of two flanges located on the sprocket hub. As assembled, the sprocket hub and locking collar float and oscillate on the drive axle to compensate for chassis flex and chain bind such that acceleration of said kart vehicle is enhanced.

Abstract: Systems and techniques are disclosed relating to electric motor applications. The systems and techniques are described in the context of an electric powered vehicle. The electric powered vehicle includes a drive wheel, an electric motor configured to rotate the drive wheel by delivering power thereto, a speed sensor configured to monitor rotational speed of the drive wheel, and a controller configured to limit the power delivered to the drive wheel to a maximum level over a range of rotational speeds monitored by the speed sensor.

Abstract: A control unit for a vehicle including a controller that determines whether shifting of a stepped transmission is necessary, and increases output torque of a first drive unit and decreases output torque of a second drive unit in correspondence with an increase of the output torque of the first drive unit, the increase and the decrease being performed prior to shifting of the stepped transmission when a determination is made that shifting is necessary.

Abstract: A vehicle with protection against the effects of an exploding land mine is provided, in which a military wheeled vehicle is provided with wheel axels and drives built into front and/or rear building blocks. The vehicle is divided into multiple building blocks, although a three block construction is desirable (i.e., a front building block, a rear building block, and a main building block). A residual mobility of a remaining portion of the vehicle is preserved, even though one of the front building block or the rear building block is separated from the main building block due to the explosive shock wave generated by driving over and detonating a land mine, because each of the front building block and the rear building block has a drive for rotating the wheel axel connected to the block.

Abstract: An in-wheel motor includes a motor, a shaft, an oil pump and oil paths. The oil pump is provided on one end of the shaft. The motor includes a stator core, stator coils and a rotor. The oil pump pumps up an oil from an oil reservoir via an oil path to supply the pumped-up oil to another oil path. The another oil path supplies the oil from the oil pump to the outer periphery of the stator core of the motor from an opening end.

Abstract: A vehicle body stiffener comprises an assembly of an outer member and an inner stiffener member which are joined to form a closure for the body. The inner stiffener member is formed to carry tension, compressive and torsional loads from the vehicle body and two locating pins at the corners of one side of the assembly and two latch pins at the corners of the opposite side of the assembly engage complementary receptacles on the vehicle body to make the assembly act as a structural member of the body to transfer forces from the body to the assembly. The assembly is preferably pivotally connected to the vehicle body by a pair of hinges which allow the assembly to be opened to gain access to the vehicle body interior. The assembly can be an engine compartment hood, a trunk lid or other closure.

Abstract: A mounting assembly for converting a two wheel vehicle to a three wheel vehicle. The mounting assembly includes a swing arm assembly having two arms connected by an intermediate member with each of the arms having a pivotal connector attached to one of their ends. A third link has a first end pivotally connected to the intermediate member and a second end free of the swing arm assembly. The mounting assembly may be adapted to fit the frames of Harley Davidson V-Rod model motorcycles by using arm extensions that connect the swing arm shaft assembly to the frame of the motorcycle.

Abstract: A configuration of a three-wheeled agricultural applicator is provided that enhances visibility or the field of view of an operator. The three-wheeled agricultural applicator includes a frame assembly having a fork assembly and a kingpin extending generally upward therefrom. The three-wheeled agricultural applicator further includes a steering assembly that includes a steering wheel interlinked by a left steering actuator and a right steering actuator with a steering plate attached at the top of the kingpin. This configuration allows a hood associated with a drive unit of the three-wheeled agricultural applicator to be angled in a downward direction towards the forward direction of travel, thus enhancing the operator's field of view.

Abstract: This invention provides a vehicle axle assembly including a wheel end supported on an axle by bearings. A system uses ABS to detect lateral movement of the wheel end relative to the axle using a sensor and tone ring. A fault code is generated during excessive lateral movement of the wheel end relative to the axle. A wheel end condition detection system activates a warning device in the vehicle cab communicating the severity of the condition to the vehicle operator. Additionally, the system may also communicate with a vehicle control system to limit speed of the vehicle by regulating the vehicle's engine to ensure that the vehicle is not operated at an unsafe speed until the wheel end condition is corrected.

Abstract: In order to solve a problem of an electric power steering device of an automobile that the steering feeling is deteriorated by dragging the inactive electric motor if a steering member is operated at a small angle to leave an electric motor inactive while the automobile is running straight, the present invention provides a joint for jointing the rotary shaft of a steering assisting electric motor and a worm shaft of a reduction mechanism, comprising a first member rotating integrally with the rotary shaft; a second member rotating integrally with the worm shaft; and an elastic member for coupling the two members in a torque transmittable manner. The elastic member has a relatively small elastic modulus according to the state that the torsion angle between the first and second members is small. Accordingly, the structure and characteristics thereof lead to a better operationality of the steering member.

Abstract: In the oil industry, the acoustic sounding method is a well-known technique for taking the depth measurements of particular attributes of an oil well or borehole. The method involves sending a short, sharp, clear, loud bang sound down a borehole, normally between the inside wall of the borehole casing, commonly referred to as the annulus and the outside of the production tubing string, and recording the echoes generated. One device for generating the sound needed in the acoustic sounding method is an air or gas pressurized chamber which is discharged at or near the wellhead of the borehole. The sound being generated by this device, commonly known as an acoustic generator, comes from the energy released by the equilibration of the different gas pressures.

Abstract: The invention relates to an attachment pin (1) for fixing an exhaust-gas muffler (2) in an apparatus part (4) of a portable handheld work apparatus (5) driven by an internal combustion engine. The exhaust-gas muffler (2) includes especially an exhaust-gas catalytic converter (3). An at least partially exposed region (6) is provided with a cooling surface (7) and is on the attachment pin (1) between the exhaust-gas muffler (2) and the apparatus part (4).

Abstract: A mobile scaffold (10) having bi-axially rotatable casters (22–28) and including brake assemblies (30 and 32) associated with the casters (22–28) is disclosed. The inventive brake assemblies (30,32) enable an elevated worker to selectively control the mobility of the scaffold (10) and each broadly includes shiftable brake stop subassemblies (74 and 76), a brake housing (72) adjustably connected to a respective scaffold frame (12,14) and shiftably connected to the brake stop subassemblies (74,76), and an actuator (78) adjustably connected to the housing (72) and configured to shift the brake stop subassemblies (74,76) into and out of braking positions. When in the braking position, the brake stop subassemblies (74,76) prevent the respective casters (22–28) from rotating about both axes. The actuator includes cables (180,182) for interconnecting brake stop subassembly and the handle in one embodiment and a plunger (308,406) in other embodiments.

Abstract: The present invention provides a support clamp device for a safety rail or similar device adapted for mounting on a pump jack pole comprising: a first pole clamp, circumscribing a generally rectangular perimeter, the first pole clamp comprising a generally U-shaped bar having a first side; a second side and a third side, wherein the first and third sides are approximately parallel to each other and the second side is approximately perpendicular to the first and third sides and wherein the second side further comprises an aperture; and a fourth side removably attached to the first and third sides opposite and approximately parallel the second side; and a second pole clamp, circumscribing a generally rectangular perimeter, the second pole clamp comprising a generally U-shaped bar having a first side; a second side and a third side, and a pole clamp connecting fastening means, the first pole clamp and the second pole clamp are able to pivotably rotate about the axis formed by the pole clamp connecting fastener.

Abstract: An outrigger assembly includes at least one support unit including a first elongated support arm and a second elongated support arm cantilevered and secured to the first support arm. A joist-supporting arm is removably engaged with the front end portion. The assembly further includes an upper support arm cantilevered and secured to the first support arm. A support member having opposed end portions is secured thereto and to the first support member. The upper support arm includes a plurality of L-shaped members mated along an edge thereof. An elongated board is positionable between adjacently disposed rear end portions. The front end portion exerts an upward force against the work area joists while the upper support arm exerts a downward force against a top surface of the work area such that the forces become balanced.

Abstract: A platform lift has support posts, and a platform that is coupled to the lift so as to be capable of being raised and lowered relative to the posts. A lifting mechanism moves the platform up and down relative to the posts. The platform has support structure and decking located on top of the support structure so as to provide a work area. An opening is provided in the support structure and the decking, which opening receives an engine, such as an aircraft engine. The platform provides a work area around the entire circumference of the engine, while the platform can be raised or lowered to provide access along the length of the engine. Filler plates can be provide so as to change the size of the opening to work on engines of different diameters.

Abstract: A replaceable locking and securing device for securing a first member to a second member includes a replaceable bracket, a lock and a fastener. The bracket defines one opening when the bracket is operatively connected to the first member.