초록 ▼

The invention concerns a new seal system for resolving the problem of the contamination of special fluids carried in pumps and moreover providing improved sealing by virtue of its special geometry and design. According to the invention, one of the elements to be connected can replace the seal owing

The invention concerns a new seal system for resolving the problem of the contamination of special fluids carried in pumps and moreover providing improved sealing by virtue of its special geometry and design. According to the invention, one of the elements to be connected can replace the seal owing to the fact that the seal system includes a combination of two elements to be connected with a fine film ring, one of the elements to be connected having a geometry able to effect a double indentation on the film ring. The invention may be used in pumps and circuits for fluids of the semiconductor industry. The three elements of the seal system, including the pump body, tube, and film ring, may be made of PFA.

대표청구항 ▼

The invention concerns a new seal system for resolving the problem of the contamination of special fluids carried in pumps and moreover providing improved sealing by virtue of its special geometry and design. According to the invention, one of the elements to be connected can replace the seal owing

The invention concerns a new seal system for resolving the problem of the contamination of special fluids carried in pumps and moreover providing improved sealing by virtue of its special geometry and design. According to the invention, one of the elements to be connected can replace the seal owing to the fact that the seal system includes a combination of two elements to be connected with a fine film ring, one of the elements to be connected having a geometry able to effect a double indentation on the film ring. The invention may be used in pumps and circuits for fluids of the semiconductor industry. The three elements of the seal system, including the pump body, tube, and film ring, may be made of PFA. he second clock frequency domain. 26. The processor-based device of claim 25, further comprising: means coupled to the communications bus for holding information transmitted within the second clock frequency domain until a predetermined time within the first clock frequency domain. 27. A processor-based device adapted to communicate over a computer bus between multiple computer devices operating at different clock frequencies, comprising: a computer bus for transmitting information; a first device coupled to the computer bus and driven by a first clock signal; and a second device coupled to the computer bus and driven by a second clock signal; means coupled to the computer bus for initiating a read cycle in the second device when the first clock signal and the second clock signal are in phase and initiating a write cycle in