Patent US3635214A successfully refreshed from Google Patents.
US3635214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual pulmonary meter
Assignee: WILLIAM A RAND
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Filing: 1970-07-29
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Granted: 1972-01-18
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Expires: 1990-07-29
Abstract
Abstract A pocket-sized pulmonary meter which includes a hollow cylindrical chamber for slidably receiving a piston. A breathing tube assembly communicating with one end of the cylindrical chamber forms a flow passageway terminating with a mouthpiece through which a patient can exhale into the cylindrical chamber and correspondingly move the piston by this expiratory force. An air exit regulator is provided at the other end of the cylindrical chamber and has calibrated registering apertures to selectively vary the rate at which air can escape from the chamber and will thus control resistance to piston movement. The breathing tube may further include an adapter for introducing an inhalator. In an alternate embodiment the device is provided with a slidable gate valve and adapter for securing a medicament dispenser whereby rotation of the mouthpiece will selectively operate the valve and will permit either inhalation of the medicine or exhalation into the cylindrical chamber.
Inventors
- 👤 William A Rand
- 👤 Jerome Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:24
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/18; A61; A61B; A61B5/00; A61B5/08; A61B5/087; A61B5/0875; A61M; A61M15/00; A61M15/009; A61M16/00; A61M16/0003; A61M2016/003
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
94 words
A visual pulmonary meter for respiratory function analysis comprising a transparent chamber, a piston slidably mounted within said chamber, a breathing tube assembly connected to an entry means into the chamber on one side of the piston for admitting air into the chamber to move the piston, passage means for conducting the air from one side of the piston to the other side, egress means for selectively regulating the escape of air from the chamber on the opposite side of the piston and adapter means associated with the breathing tube for introducing an inhalant.
Claim 2
Dependent Claim
94 words
A visual pulmonary meter for respiratory function analysis comprising a transparent chamber, a piston slidably mounted within said chamber, a breathing tube assembly connected to an entry means into the chamber on one side of the piston for admitting air into the chamber to move the piston, passage means for conducting the air from one side of the piston to the other side, egress means for selectively regulating the escape of air from the chamber on the opposite side of the piston and adapter means associated with the breathing tube for introducing an inhalant.
Claim 3
Dependent Claim
84 words
A visual pulmonary meter for respiratory function analysis comprising a transparent cylindrical chamber, a piston slidably mounted within the chamber, entry means into the chamber on one side of the piston for admitting exhaled air to move the piston, means for permitting the exhaled air to pass from one side of the piston to an opposite side, and egress means from the chamber on the opposite side of the piston for selectively regulating the escape of air and the resultant resistance to piston movement.
Claim 4
Dependent Claim
84 words
A visual pulmonary meter for respiratory function analysis comprising a transparent cylindrical chamber, a piston slidably mounted within the chamber, entry means into the chamber on one side of the piston for admitting exhaled air to move the piston, means for permitting the exhaled air to pass from one side of the piston to an opposite side, and egress means from the chamber on the opposite side of the piston for selectively regulating the escape of air and the resultant resistance to piston movement.
Claim 5
Dependent Claim
70 words
A visual pulmonary meter as claimed in claim 1, wherein the egress regulating means includes a plug member placed in an upper end of the chamber, said plug member defining exit port, a cap member having at least one aperture, said cap member being rotatably mounted over the plug member, whereby the cap member may be selectively rotated to register said aperture with the exit port in the plug member.
Claim 6
Dependent Claim
41 words
A visual pulmonary meter as claimed in claim 2, wherein the plug member defines an annular groove around the periphery thereof, said groove being adapted to accommodate an O-ring to provide an airtight seal between the plug and the cylindrical chamber.
Claim 7
Dependent Claim
46 words
A visual pulmonary meter as claimed in claim 2, wherein the cap member defines an annular recess centrally located therein and the plug member has an annular protrusion adapted to be secured in said recess whereby the cap meMber may be rotated about said annular protrusion.
Claim 8
Dependent Claim
53 words
A visual pulmonary meter as claimed in claim 2, wherein the piston contains an annular rim at opposed ends thereof, said rim being in contact with the cylindrical chamber, and the piston further defining a central passageway for permitting exhaled air to pass from one side of the piston to the other side.
Claim 9
Dependent Claim
49 words
A visual pulmonary meter as claimed in claim 1, wherein the entry means includes a breathing tube assembly comprised of a hollow tubular projection extending from the cylindrical chamber, a tubular mouthpiece secured to the projection, and an adapter means attached to the mouthpiece for selectively admitting an inhalant.
Claim 10
Dependent Claim
33 words
A visual pulmonary meter as claimed in claim 7, wherein the mouthpiece is snap fit over a portion of the tubular projection and further includes an O-ring for providing airtightness to the connection.
Claim 11
Dependent Claim
53 words
A visual pulmonary meter as claimed in claim 7, wherein the adapter means includes a circular band rotatably journaled around the mouthpiece, a holder extending from the band for accommodating an inhalator container whereby the holder defines an intake duct therethrough for selective placement over a port in the side of the mouthpiece.
Claim 12
Dependent Claim
93 words
A visual pulmonary meter as claimed in claim 7, wherein the mouthpiece is rotatably journaled to the tubular projection and the adapter means includes a holder for accommodating an inhalator container, said holder being affixed to the mouthpiece and defines an intake duct therethrough leading to the interior of the mouthpiece, valve means formed between two respective transverse confronting walls within the mouthpiece and tubular projection for selectively sealing communication between the mouthpiece the cylindrical chamber to response to rotation of the mouthpiece and for correspondingly admitting an inhalant through the intake duct.
Claim 13
Dependent Claim
45 words
A visual pulmonary meter as claimed in claim 7, wherein stop members are affixed to the surface of the mouthpiece and tubular projection, said stop members being adapted for abutting engagement when the mouthpiece has been rotated and the adapter is in the inhalation position.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |