GB1160669A - Improvements in or relating to Detent Devices - Google Patents

Improvements in or relating to Detent Devices

Info

Publication number
GB1160669A
GB1160669A GB3200768A GB3200768A GB1160669A GB 1160669 A GB1160669 A GB 1160669A GB 3200768 A GB3200768 A GB 3200768A GB 3200768 A GB3200768 A GB 3200768A GB 1160669 A GB1160669 A GB 1160669A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
member
piston
detent finger
slidable member
detent
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
GB3200768A
Inventor
Frederick Ball
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.)
FERRARIS DEV AND ENG CO Ltd
Original Assignee
FERRARIS DEV AND ENG CO Ltd
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

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/08Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/087Measuring breath flow
    • A61B5/0871Peak expiratory flowmeters
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31501Means for blocking or restricting the movement of the rod or piston
    • A61M2005/31508Means for blocking or restricting the movement of the rod or piston provided on the piston-rod
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31501Means for blocking or restricting the movement of the rod or piston
    • A61M5/31505Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit

Abstract

1,160,669. Physiological measuring &c. FARRARIS DEVELOPMENT & ENG. CO. Ltd. 4 July, 1968, No. 32007/68. Heading A5K. [Also in Division E2] A detent device 25 for retaining a longitudinally slidable member 15 against movement in one direction comprises a mounting member 26 adapted to be fixed to a boss or like tubular member 13 through which the slidable member 15 passes, a resilient arm 27 projecting outwardly from the mounting member and a detent finger 28 carried by the radial arm serving to urge the detent finger into engagement with the slidiable member, and pressure exerted on the radial arm in a direction parallel to the direction of movement of the slidable member serving to disengage the detent finger from the slidable member. As shown, the device is applied to a peak flow meter for determining the maximum flow of air which can be produced 'by a person when exhaling. The meter comprises a cylinder 10 having at one end a mouthpiece 11 and at the other end, the boss 13 carried by a cap 12. A hollow piston rod, constituting the slidable member 15 is connected to a piston 16 and is provided with notches 24 which co-operate with the detent finger 28 to permit sliding movement of the piston and rod in one direction against the tension of a spring 17 when a person blows into the mouthpiece 11, the piston being returned to its normal position by the spring 17 when a button 31 is depressed to flex the arm 27 whereby to disengage the detent finger from a notch 24. The piston is provided with an index 23 which traverses a slot 22 in the cylinder, having scale markings along one of its edges. The mounting member 26 consists of a clip which is secured to the boss 13 and the latter is formed with a slot 32 through which the detent finger extends to engage the notches 24.
GB3200768A 1968-07-04 1968-07-04 Improvements in or relating to Detent Devices Expired GB1160669A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3200768A GB1160669A (en) 1968-07-04 1968-07-04 Improvements in or relating to Detent Devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3200768A GB1160669A (en) 1968-07-04 1968-07-04 Improvements in or relating to Detent Devices

Publications (1)

Publication Number Publication Date
GB1160669A true true GB1160669A (en) 1969-08-06

Family

ID=10331633

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3200768A Expired GB1160669A (en) 1968-07-04 1968-07-04 Improvements in or relating to Detent Devices

Country Status (1)

Country Link
GB (1) GB1160669A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2221150A1 (en) * 1972-04-28 1973-11-08 Ferraris Dev & Eng Co Ltd Tip speedometer
US3826247A (en) * 1972-06-27 1974-07-30 A Ruskin Pulmonary achievement trainer
US3848585A (en) * 1972-04-17 1974-11-19 Meeda Scient Instrumentation L Peak flow indicator for fluids
DE2433994A1 (en) * 1973-07-17 1975-02-06 Nat Res Dev Instrument measuring atmungskapazitaet
DE2744293A1 (en) * 1977-10-01 1979-04-12 Ver Flugtechnische Werke Height adjustable TOOL CARRIERS
US4944306A (en) * 1987-10-13 1990-07-31 Healthscan, Inc. Spirometer for pulmonary measurement
US5137026A (en) * 1990-01-04 1992-08-11 Glaxo Australia Pty., Ltd. Personal spirometer
US5253651A (en) * 1990-01-23 1993-10-19 Ferraris Development And Engineering Company Limited Ventilatory instrument for measuring peak expiratory flow
US5565630A (en) * 1993-11-17 1996-10-15 Monaghan Medical Corporation Peak flow meter
US5627324A (en) * 1993-11-17 1997-05-06 Trudell Medical Limited Peak flow meter
WO2005058397A1 (en) * 2003-12-18 2005-06-30 Btg International Limited Syringe
US7390305B2 (en) 2005-03-23 2008-06-24 Trudell Medical International Peak flow meter

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848585A (en) * 1972-04-17 1974-11-19 Meeda Scient Instrumentation L Peak flow indicator for fluids
DE2221150A1 (en) * 1972-04-28 1973-11-08 Ferraris Dev & Eng Co Ltd Tip speedometer
US3826247A (en) * 1972-06-27 1974-07-30 A Ruskin Pulmonary achievement trainer
DE2433994A1 (en) * 1973-07-17 1975-02-06 Nat Res Dev Instrument measuring atmungskapazitaet
US3958565A (en) * 1973-07-17 1976-05-25 National Research Development Corporation Ventilatory capacity measuring instrument
DE2744293A1 (en) * 1977-10-01 1979-04-12 Ver Flugtechnische Werke Height adjustable TOOL CARRIERS
US4944306A (en) * 1987-10-13 1990-07-31 Healthscan, Inc. Spirometer for pulmonary measurement
US5137026A (en) * 1990-01-04 1992-08-11 Glaxo Australia Pty., Ltd. Personal spirometer
US5253651A (en) * 1990-01-23 1993-10-19 Ferraris Development And Engineering Company Limited Ventilatory instrument for measuring peak expiratory flow
US5565630A (en) * 1993-11-17 1996-10-15 Monaghan Medical Corporation Peak flow meter
US5627324A (en) * 1993-11-17 1997-05-06 Trudell Medical Limited Peak flow meter
WO2005058397A1 (en) * 2003-12-18 2005-06-30 Btg International Limited Syringe
US7390305B2 (en) 2005-03-23 2008-06-24 Trudell Medical International Peak flow meter

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee