Abstract: A driving device using pneumatic-hydraulic pressure as a power source for a vehicle has a pneumatic cylinder filled with high pressure air, a hydraulic cylinder filled with high pressure air and high pressure hydraulic fluid, a first supplementary cylinder, and a secondary supplementary cylinder. The hydraulic cylinder is connected with the pneumatic cylinder and is connected to the first supplementary cylinder and the secondary supplementary cylinder via a hydraulic motor. The first supplementary cylinder and the second supplementary cylinder are alternately pressurized, so as to alternately supply the pressurized hydraulic fluid to the hydraulic cylinder. Thus, the hydraulic cylinder can provide the pressurized hydraulic fluid with a pre-determined pressure to constantly drive the hydraulic motor. The driving device meets requirements of environmental protection from zero waste discharge.

Abstract: An air filtration device for a compressor is disclosed. A sealing head is fixed onto an opening of the compressor and has a first-end opening, a second-end opening and a screw hole; the first-end opening has a first thread; a sealing cap is coupled to the second-end opening and includes a cover plate, a screw and a first positioning portion; the screw is screwed into the screw hole; an air filter is coupled to the first-end opening and includes a filter core and a filter cover; the filter cover has a second thread and a second positioning portion, and the second threads are engaged with the first threads, and the second positioning portion is positioned on the first positioning portion. When the air filter is rotated, the cover plate is moved with the filter cover to seal or leave the second-end opening.

Abstract: An air filtration device for a compressor is disclosed. A sealing head is fixed onto an opening of the compressor and has a first-end opening, a second-end opening and a screw hole; the first-end opening has a first thread; a sealing cap is coupled to the second-end opening and includes a cover plate, a screw and a first positioning portion; the screw is screwed into the screw hole; an air filter is coupled to the first-end opening and includes a filter core and a filter cover; the filter cover has a second thread and a second positioning portion, and the second threads are engaged with the first threads, and the second positioning portion is positioned on the first positioning portion. When the air filter is rotated, the cover plate is moved with the filter cover to seal or leave the second-end opening.

Abstract: An oil circulation system for a compressor comprises a control valve body integrated therein with a pressure sensor, a differential pressure sensor and a temperature sensor. The control valve body is further integrated therein with a temperature control valve connected to an external cooler for lowering a temperature of a hydraulic oil, an oil filter for filtering the cooled hydraulic oil into a clean hydraulic oil, and a pressure relief valve for relieving a pressure of the clean hydraulic oil, which is then circulated back into the compressor for use. The integration of the aforementioned components effectively downsizes an entire set of machinery comprising the compressor and the oil circulation system and increases an efficiency of the compressor.

Abstract: A golf bag includes a divider received in an opening of the golf bag to receive therein golf clubs. The divider has a top cover, a bottom cover and multiple tubes securely received between the top cover and the bottom cover. Each tube extends through the top cover and the bottom cover and is so configured that only one golf club is able to be received in a corresponding one of the tubes.