Abstract: A hammer wrench securing apparatus includes a collar having an elongate portion with a length and a first external perimeter as well as a base portion with a second external perimeter greater than the first external perimeter. A washer has a first internal perimeter extending around the elongate portion distal from the base portion and a spring extends around the elongate portion of the threaded collar between the base portion and the washer. In a method for removing at least one degree of freedom of a wrench, an internally threaded member is applied to an externally threaded member, a tool end of a wrench is applied to the internally threaded member, a threaded sleeve is applied to the externally threaded member adjacent to the internally threaded member and a washer is biased towards the tool end of the wrench.

Abstract: A valve lash setting method for setting a predetermined lash in a valve assembly for internal combustion engines. The method includes generating a torque curve and using a linear regression calculation to define a zero crossing point from which a predetermined final lash position of an adjusting screw can be set and secured.

Abstract: A device for actuating a valve of a valve assembly of an engine and for adjusting a stroke of the valve, may include a camshaft including a cam, a working curve member provided pivotably about the camshaft for actuating the valve, a lever holder which is provided pivotably about the camshaft, a lever, one end of which is spaced from the camshaft with a predetermined distance and pivotally coupled to the lever holder, and a connecting link pivotally connected to the lever and the working curve member.

Abstract: An adjustment unit has a driver for turning an adjustment screw, a sleeve having a hexagonal hole connected to a rotating shaft, an insertion member connected to the upper end of the driver and of which a part is inserted in the sleeve, a pipe concentrically provided around the driver and having at its forward end a socket for rotating an adjustment nut, and a gear body provided concentric with the pipe and rotating the pipe. The sleeve has a short tiltable support section in contact with the hexagonal hole. A gap is provided between the hexagonal hole of the gear body and a hexagonal column section of the pipe. The driver and the pipe tilt about the tilting support section as the fulcrum.

Abstract: A tool for adjusting the tappet clearance in the valve actuation system of an internal combustion engine includes a screw adjustment portion that is driven by a pneumatic powered screw driver. The pneumatic power to the screw driver is regulated to cause the screw driver to position the screw so that the desired biasing force is present. The screw driver bit passes through the head portion of a torque limiting wrench which is used to loosen and tighten the jam nut that secures the tappet adjustment screw. The tool also has a pneumatic driven gripping mechanism to hold the screw driver bit in position and prevent inadvertent displacement of the tappet adjustment screw while the jam nut is tightened.

Abstract: An adjustment unit has a driver for turning an adjustment screw, a sleeve having a hexagonal hole connected to a rotating shaft, an insertion member connected to the upper end of the driver and of which a part is inserted in the sleeve, a pipe concentrically provided around the driver and having at its forward end a socket for rotating an adjustment nut, and a gear body provided concentric with the pipe and rotating the pipe. The sleeve has a short tiltable support section in contact with the hexagonal hole. A gap is provided between the hexagonal hole of the gear body and a hexagonal column section of the pipe. The driver and the pipe tilt about the tilting support section as the fulcrum.

Abstract: A tool for adjusting the tappet clearance in the valve actuation system of an internal combustion engine includes a screw adjustment portion that is driven by a pneumatic powered screw driver. The pneumatic power to the screw driver is regulated to cause the screw driver to position the screw so that the desired biasing force is present. The screw driver bit passes through the head portion of a torque limiting wrench which is used to loosen and tighten the jam nut that secures the tappet adjustment screw. The tool also has a pneumatic driven gripping mechanism to hold the screw driver bit in position and prevent inadvertent displacement of the tappet adjustment screw while the jam nut is tightened.

Abstract: A combination of tools for use in adjusting the valves in an internal combustion engine, and particularly the movement of the valve contacting end of a rocker arm in a motorcycle engine, comprises a socket, a hollow rod sized to fit in the opening in the top of the socket and a screw driver sized to fit through an upper opening in the rod so that the valve adjustment screw can be adjusted while the locking nut thereon is easily unlocked using the socket.

Abstract: A device and method for inserting rivets. The device and method allows for accurate, consistent installation of threaded blind rivets. The device comprises a rivet insert tool, a rivet insert shaft, and a sleeve through which the shaft passes. This provides significant accuracy to less accurate rivet inserting devices.

Abstract: A method and a device for setting the valve lash to a desired value at I.C. engines, including application of a motor driven coaxial double spindle (22) on each valve adjusting screw (18) and lock nut (19) followed by a number of consecutive operation steps comprising: tightening the adjuster screw (18) of each valve (11;111) to a snug torque level (Ts) , open the valve (11;111) by tightening the adjuster screw (18) through a predetermined angle while checking the torque magnitude required therefor, reverse the adjuster screw (18) through an angle exceeding the previous predetermined angle, re-tighten the adjuster screw (18) to the snug torque level (Ts), reverse the adjuster screw (18) through an angular interval corresponding to the desired valve lash, and tighten the lock nut (19) while holding the adjuster screw (18) stationary.

Abstract: A tappet screw adjuster having an outer sleeve, an inner shaft, a bearing block, a handle, and a rotary coupling disposed between the bearing block and the inner shaft. The rotary coupling is designed such that the bearing block and inner shaft rotate together when a load on the inner shaft is below a predetermined level and such that the bearing block and inner shaft do not rotate together when the load on the inner shaft exceeds the predetermined level. The rotary coupling includes a tension setting device, which is threadably secured to the bearing block, and a friction plate. The friction plate includes an annular projection that is received within a groove provided on the tension setting device.

Abstract: A valve adjusting and injector preload tool is provided for an internal combustion engine having a valve opening member with a male threaded member operatively and adjustably contacting the valve. The tool includes a first member engagable with the threaded member for rotating the threaded member towards or away from the valve. There is a knob for rotating the first member in a first rotational direction so the male threaded member moves towards the valve and for rotating the first member in a second rotational direction so the male threaded member moves away from the valve. There is a clutch for stopping movement of the first member, as the male threaded member moves towards the valve, when the male threaded member operatively contacts the valve and takes up play between the valve opening member and the valve.