FR453705A - Perfectionnements aux pompes à vide - Google Patents

Perfectionnements aux pompes à vide

Info

Publication number
FR453705A
FR453705A FR453705A FR453705DA FR453705A FR 453705 A FR453705 A FR 453705A FR 453705 A FR453705 A FR 453705A FR 453705D A FR453705D A FR 453705DA FR 453705 A FR453705 A FR 453705A
Authority
FR
France
Prior art keywords
vacuum pump
pump improvements
vacuum
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR453705A
Other languages
English (en)
Inventor
Paul Schou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR453705A publication Critical patent/FR453705A/fr
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • F04B37/16—Means for nullifying unswept space
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR453705A 1912-02-02 1913-01-28 Perfectionnements aux pompes à vide Expired FR453705A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE806X 1912-02-02

Publications (1)

Publication Number Publication Date
FR453705A true FR453705A (fr) 1913-06-14

Family

ID=84980639

Family Applications (1)

Application Number Title Priority Date Filing Date
FR453705A Expired FR453705A (fr) 1912-02-02 1913-01-28 Perfectionnements aux pompes à vide

Country Status (3)

Country Link
AT (1) AT67311B (fr)
FR (1) FR453705A (fr)
NL (1) NL806C (fr)

Also Published As

Publication number Publication date
NL806C (nl) 1915-09-15
AT67311B (de) 1914-12-28

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