Abstract: A fuel injector cleaning apparatus comprises a platform including a delivery channel, a first orifice adapted for connecting to a source of cleaning fluid and in communication with the delivery channel. An outlet device has one end mounted on the platform and another end for coupling to a fuel injector. A switch device mounted on the outlet device is moveable between a first condition so as to allow the cleaning fluid flow out of the outlet device and a second condition so as to stop the cleaning fluid from flowing out of the outlet device. A pumping device has one end mounted on the platform and another end operably moveable so as to introduce the cleaning fluid into the platform and to the outlet device, whereby the cleaning fluid is released from the outlet device at a predetermined pressure so as to clean the fuel injector thoroughly.

Abstract: There is disclosed a device for purging filth from an engine. The device includes a closing element for closing a tank. The closing element defines a first channel through which a purging agent goes to the engine from the tank and a second channel through which pressurized air goes to the tank from a source. A single-channel joint defines a channel in communication with the second channel of the closing element. A pressure regulation set is in communication with the channel of the single-channel joint. A bi-channel joint defines a first channel in communication with the pressure regulation set and a second channel in communication with the first channel perpendicularly. A release valve is in communication with the second channel of the bi-channel joint. A check valve is installed in the first channel of the bi-channel joint.

Abstract: A transmission for transmitting torque smaller than an adjustable value includes three transmitting elements. The first transmitting element includes a non-circular tunnel and a shoulder. The second transmitting element includes a non-circular insert inserted in the non-circular tunnel, wedges and a shoulder. The third transmitting element includes wedges engaged with the wedges of the second transmitting element. An elastic element is compressed between the shoulders of the first and second transmitting elements so as to engage the wedges of the second transmitting element with the wedges of the third transmitting element. A first collar includes a thread. A second collar includes a thread engaged with the thread of the first collar so that the collars contain the transmitting elements and the elastic element and that the collars can be rotated relative to each other to change the relative axial position between them and adjust the adjustable value.

Abstract: There is disclosed a device for purging filth from an engine. The device includes a closing element for closing a tank. The closing element defines a first channel through which a purging agent goes to the engine from the tank and a second channel through which pressurized air goes to the tank from a source. A single-channel joint defines a channel in communication with the second channel of the closing element. A pressure regulation set is in communication with the channel of the single-channel joint. A bi-channel joint defines a first channel in communication with the pressure regulation set and a second channel in communication with the first channel perpendicularly. A release valve is in communication with the second channel of the bi-channel joint. A check valve is installed in the first channel of the bi-channel joint.

Abstract: A relief valve assembly is disclosed to include a casing, an one-way valve mounted in the fluid input end of the casing for guiding in a fluid, and a relief control valve installed in the casing between the fluid input end and fluid output end and controllable to reduce the inside pressure of the casing, the relief control valve including a guide tube fastened to the casing in fluid communication between the fluid input end and fluid output end of the casing, a valve stem axially movably inserted through the guide tube, an O-ring in a groove around the valve stem between the head of the valve stem and a flange at one end of the stem body of the valve stem, and a spring member connected between the guide tube and one end of the valve stem to hold the valve stem in the close position to close the passage of the guide tube, and a control member fastened to one end of the valve stem outside the guide tube for pressing by hand to move the valve stem to the open position to open the passage of the guide tube.

Abstract: A relief valve assembly is disclosed to include a casing, an one-way valve mounted in the fluid input end of the casing for guiding in a fluid, and a relief control valve installed in the casing between the fluid input end and fluid output end and controllable to reduce the inside pressure of the casing, the relief control valve including a guide tube fastened to the casing in fluid communication between the fluid input end and fluid output end of the casing, a valve stem axially movably inserted through the guide tube, an O-ring in a groove around the valve stem between the head of the valve stem and a flange at one end of the stem body of the valve stem, and a spring member connected between the guide tube and one end of the valve stem to hold the valve stem in the close position to close the passage of the guide tube, and a control member fastened to one end of the valve stem outside the guide tube for pressing by hand to move the valve stem to the open position to open the passage of the guide tube.