FR2311973A1 - Pressure relief valve for air pump - uses elastic sleeve around piston rod to open ports at excess tank pressure - Google Patents

Pressure relief valve for air pump - uses elastic sleeve around piston rod to open ports at excess tank pressure

Info

Publication number
FR2311973A1
FR2311973A1 FR7516550A FR7516550A FR2311973A1 FR 2311973 A1 FR2311973 A1 FR 2311973A1 FR 7516550 A FR7516550 A FR 7516550A FR 7516550 A FR7516550 A FR 7516550A FR 2311973 A1 FR2311973 A1 FR 2311973A1
Authority
FR
France
Prior art keywords
piston rod
elastic sleeve
air pump
relief valve
pressure
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.)
Granted
Application number
FR7516550A
Other languages
French (fr)
Other versions
FR2311973B1 (en
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.)
Berthoud SA
Original Assignee
Berthoud SA
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 Berthoud SA filed Critical Berthoud SA
Priority to FR7516550A priority Critical patent/FR2311973A1/en
Publication of FR2311973A1 publication Critical patent/FR2311973A1/en
Application granted granted Critical
Publication of FR2311973B1 publication Critical patent/FR2311973B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/70—Pressure relief devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
    • B05B9/0811—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container
    • B05B9/0816—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container the air supplying means being a manually actuated air pump
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/24—Bypassing
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • F04B53/121—Valves; Arrangement of valves arranged in or on pistons the valve being an annular ring surrounding the piston, e.g. an O-ring
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • F04B53/123—Flexible valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Safety Valves (AREA)
  • Actuator (AREA)

Abstract

The air pump consists of a cylinder (1) mounted inside a tank. The piston (2) is formed integrally with the piston rod which extends through the end cap. The lower end of the cylinder (1) is provided with a non-return valve (6) which allows air to flow into the tank but prevents its return. The piston rod is provided with a blind hole (8) which communicates with four radial holes (9). These holes are normally sealed by an elastic sleeve (10). When the pressure in the tank exceeds a safe value, the elastic sleeve expands and allows air to escape in the upper part of the cylinder (1) which communicates with the atmosphere.
FR7516550A 1975-05-21 1975-05-21 Pressure relief valve for air pump - uses elastic sleeve around piston rod to open ports at excess tank pressure Granted FR2311973A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7516550A FR2311973A1 (en) 1975-05-21 1975-05-21 Pressure relief valve for air pump - uses elastic sleeve around piston rod to open ports at excess tank pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7516550A FR2311973A1 (en) 1975-05-21 1975-05-21 Pressure relief valve for air pump - uses elastic sleeve around piston rod to open ports at excess tank pressure

Publications (2)

Publication Number Publication Date
FR2311973A1 true FR2311973A1 (en) 1976-12-17
FR2311973B1 FR2311973B1 (en) 1980-07-11

Family

ID=9155741

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7516550A Granted FR2311973A1 (en) 1975-05-21 1975-05-21 Pressure relief valve for air pump - uses elastic sleeve around piston rod to open ports at excess tank pressure

Country Status (1)

Country Link
FR (1) FR2311973A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106837777B (en) * 2016-12-06 2018-09-28 深圳星粒文化传播有限公司 The overpressure protection apparatus of portable minisize high pressure coffee apparatus

Also Published As

Publication number Publication date
FR2311973B1 (en) 1980-07-11

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Legal Events

Date Code Title Description
ST Notification of lapse