GB371483A - Improvements in and relating to non-return valves - Google Patents

Improvements in and relating to non-return valves

Info

Publication number
GB371483A
GB371483A GB293431A GB293431A GB371483A GB 371483 A GB371483 A GB 371483A GB 293431 A GB293431 A GB 293431A GB 293431 A GB293431 A GB 293431A GB 371483 A GB371483 A GB 371483A
Authority
GB
United Kingdom
Prior art keywords
spittoons
water supply
guiding means
dental
valve
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
GB293431A
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
Priority to GB293431A priority Critical patent/GB371483A/en
Publication of GB371483A publication Critical patent/GB371483A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

371,483. Spittoons. COWPER, F. M., Lindisfarne, The Downsway, Sutton, Surrey. Jan. 29, 1931, No. 2934. [Class 26.] Dental fountain spittoons having saliva ejectors and similar devices where a water supply is employed in surgical operations for irrigating and draining purposes are fitted with a non-return valve freely mounted in guiding means and having one or more registering annular grooves 6, 7 in the valve member and seat respectively. An element 2 connected by a gland nut 18 to the dental spittoon is screwed in an element 3 to form a valve chamber 1, which houses an annular cage 8 forming the guiding means and limiting by its inwardly projecting parts 9 the lift of the valve member 5. A tubular member 14 connected at 16 to the water supply screws into the lower end of the element 3 and retains, by an internal threaded portion 13, a strainer 11 having a knurled upper end 17. Liquidtight joints between the members 2, 3, 14 are effected by the use of lead washers 19, 20 fitting in recesses 21, 22, 23.
GB293431A 1931-01-29 1931-01-29 Improvements in and relating to non-return valves Expired GB371483A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB293431A GB371483A (en) 1931-01-29 1931-01-29 Improvements in and relating to non-return valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB293431A GB371483A (en) 1931-01-29 1931-01-29 Improvements in and relating to non-return valves

Publications (1)

Publication Number Publication Date
GB371483A true GB371483A (en) 1932-04-28

Family

ID=9748804

Family Applications (1)

Application Number Title Priority Date Filing Date
GB293431A Expired GB371483A (en) 1931-01-29 1931-01-29 Improvements in and relating to non-return valves

Country Status (1)

Country Link
GB (1) GB371483A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738892A1 (en) * 1995-09-15 1997-03-21 Cahouet Unidirectional valve carrying oxidising gas at high pressure fed from gas bottle, to which is fitted
CN117570226A (en) * 2024-01-16 2024-02-20 佛山三水北控水质处理有限公司 Non-resistance check valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738892A1 (en) * 1995-09-15 1997-03-21 Cahouet Unidirectional valve carrying oxidising gas at high pressure fed from gas bottle, to which is fitted
CN117570226A (en) * 2024-01-16 2024-02-20 佛山三水北控水质处理有限公司 Non-resistance check valve
CN117570226B (en) * 2024-01-16 2024-03-19 佛山三水北控水质处理有限公司 Non-resistance check valve

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