piston vacuum pump

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• Vacuum pump — A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The vacuum pump was invented in 1650 by Otto von Guericke. Types Pumps can be broadly categorized according to three… …   Wikipedia

• vacuum pump — Pulsometer Pul*som e*ter, n. [Pulse + meter.] [1913 Webster] 1. A device, with valves, for raising water by steam, partly by atmospheric pressure, and partly by the direct action of the steam on the water, without the intervention of a piston;… …   The Collaborative International Dictionary of English

• mercury vacuum pump — mercury vacuum pump, a pump which produces a vacuum by using mercury as a piston …   Useful english dictionary

• pump — pump1 pumpable, adj. pumpless, adj. pumplike, adj. /pump/, n. 1. an apparatus or machine for raising, driving, exhausting, or compressing fluids or gases by means of a piston, plunger, or set of rotating vanes. 2. Engin., Building Trades. a shore …   Universalium

• Vacuum — This article is about empty physical space or the absence of matter. For other uses, see Vacuum (disambiguation). Free space redirects here. For other uses, see Free space (disambiguation). Pump to demonstrate vacuum In everyday usage, vacuum is… …   Wikipedia

• Vacuum brake — The vacuum brake is a braking system used on trains. It was first introduced in the mid 1860s and a variant, the automatic vacuum brake system became almost universal in British train equipment, and in those countries influenced by British… …   Wikipedia

• Pump — For information on Wikipedia project related discussions, see . A pump is a device used to move gases, liquids or slurries. A pump moves liquids or gases from lower pressure to higher pressure, and overcomes this difference in pressure by adding… …   Wikipedia

• pump — [1] A device for moving liquid or gas by decreasing or increasing the pressure on it. See accelerator pump air pump canned motor pump cell pump centrifugal pump charging pump circulating pump coolant pump diaphragm pump …   Dictionary of automotive terms

• vacuum technology — Introduction       all processes and physical measurements carried out under conditions of below normal atmospheric pressure. A process or physical measurement is generally performed in a vacuum for one of the following reasons: (1) to remove the …   Universalium

• Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner …   Wikipedia

• pump — I (New American Roget s College Thesaurus) v. t. draw, suck [out]; interrogate, question, catechize; inflate, puff up. See inquiry, wind, extraction. II (Roget s IV) n. Types of pumps include: air, chain, force, Geissler, lift, mercury, sand,… …   English dictionary for students