US3724601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of lubricating pneumatic machines and apparatus therefor
Assignee: Individual
•
Filing: 1970-06-16
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Granted: 1973-04-03
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Expires: 1990-06-16
Abstract
Abstract A device and method are disclosed for dosing a flowing stream of fluid. The prime field of utility of the invention is the lubrication of pneumatic machines but it is not restricted to this. In its disclosed lubricator form the device includes a casing which is connected into a fluid (generally air) stream with a lubricant container in the casing. The container includes a bag of flexible material and the fluid stream is caused to impinge on the bag so as to flatten it and expel the lubricant through the nozzle into the stream. The air can be filtered while passing through the casing but prior to it being dosed.
Inventors
- 👤 E Scragg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:40
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/30; F16N7/32; F16N7/34
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
188 words
A device for dosing a flowing fluid, the device comprising a disposable additive container and a casing, the casing having an inlet and outlet by means of which it can be connected into a fluid flow line and having means therein for temporarily and releasably locating one of said containers, the casing being adapted to be opened to permit access to be had to said means, and the container comprising a bag and a nozzle, the bag being of flexible material which is impervious to the additive contained therein, and further being such that when impinged upon by a flowing fluid with sufficient force it progressively collapses to expel additive from the nozzle, and the nozzle including a bore leading from the interior of the bag and a removable formation blocking the end of the bore remote from the bag which formation, when removed, leaves behind a bore of predetermined length, said casing being so formed that the fluid flow path therein is such that the fluid flowing therethrough impinges on said bag to collapse the same and expel additive which is then entrained in the flowing fluid.
Claim 2
Independent Claim
188 words
A device for dosing a flowing fluid, the device comprising a disposable additive container and a casing, the casing having an inlet and outlet by means of which it can be connected into a fluid flow line and having means therein for temporarily and releasably locating one of said containers, the casing being adapted to be opened to permit access to be had to said means, and the container comprising a bag and a nozzle, the bag being of flexible material which is impervious to the additive contained therein, and further being such that when impinged upon by a flowing fluid with sufficient force it progressively collapses to expel additive from the nozzle, and the nozzle including a bore leading from the interior of the bag and a removable formation blocking the end of the bore remote from the bag which formation, when removed, leaves behind a bore of predetermined length, said casing being so formed that the fluid flow path therein is such that the fluid flowing therethrough impinges on said bag to collapse the same and expel additive which is then entrained in the flowing fluid.
Claim 3
Dependent Claim
29 words
A device according to claim 1 in which said device includes a component having a central aperture into which the nozzle of the bag is pushed and temporarily retained.
Claim 4
Dependent Claim
61 words
A device according to claim 2 in which said nozzle includes outwardly projecting formations, and said aperture is formed with recesses for receiving said formations, the part of the aperture through which said formations are moved during removal of a container or insertion of a container being of lesser overall dimensions than the formations so that the formations are deformed inwardly.
Claim 5
Dependent Claim
18 words
A device according to claim 3 in which said formations are constituted by two annular, outwardly projecting ribs.
Claim 6
Dependent Claim
61 words
A device as claimed in claim 1, wherein said casing includes a main part and a closure part which are releasably connected together, said container being connected to the closure part but lying wholly or mainly within said main part, so that as said closure part is separated from the main part, said container is simultaneously withdrawn from the main part.
Claim 7
Dependent Claim
92 words
A device as claimed in claim 5, wherein a hollow liner is provided within said main part for receiving said container, there being a space between the liner and the main part through which space the inlet and the outlet are placed in communication, the liner itself having an entrance and a restricted exit so that the greater portion of the flowing fluid passes through said space with a minor portion flowing through said entrance into said liner to impinge on the bag and thereafter escaping to said outlet through said exit.
Claim 8
Dependent Claim
52 words
A device as claimed in claim 6, wherein that part of said liner which faces said inlet is in the form of a cone with its apex directed towards the inlet, said inlet and the interior of the linEr being placed in communication with one another about the periphery of said cone.
Claim 9
Dependent Claim
36 words
A device as claimed in claim 7 with the modification that said liner has an entrance but no exit, and said cone permitting the flowing fluid to impinge in a substantially unhindered manner on said bag.
Claim 10
Dependent Claim
36 words
A device as claimed in claim 6, wherein said casing and liner are generally cylindrical and co-axial, said inlet being in one transverse end of the casing and the outlet being in the other transverse end.
Claim 11
Dependent Claim
28 words
A device as claimed in claim 9, wherein a filter is provided through which the fluid passes as it emerges from said space and flows towards said nozzle.
Claim 12
Dependent Claim
23 words
A device as claimed in claim 1, wherein said container includes a non-return valve for preventing flow into said bag through the nozzle.
Claim 13
Independent Claim
257 words
A device for dosing a flowing fluid, the device comprising a disposable additive container and a casing, the casing having an inlet and outlet by means of which it can be connected into a fluid flow line and surfaces for guiding the flowing fluid in a converging pattern such as to create a zone of reduced pressure and a region of turbulence, the casing further having means therein for temporarily and releasably locating one of said containers, and being adapted to be opened to permit access to be had to said means, and the container comprising a bag and a nozzle, the bag being of flexible material which is impervious to the additive contained therein, and further being such that when impinged upon by a flowing fluid with sufficient force it progressively collapses to expel additive from the nozzle, and the nozzle including a bore leading from the interior of the bag and a removable formation blocking the end of the bore remote from the bag which formation, when removed, leaves behind an open-ended bore of predetermined length, said casing being so formed that the fluid flow path therein is such that the fluid flowing therethrough impinges on said bag to collapse the same and expel additive through the open end of the bore, and the relationship between the casing and the container being such that said open end of the bore is in said zone of reduced pressure into which zone the additive is expelled from the bore thereafter being drawn into said region of turbulence.
Claim 14
Independent Claim
257 words
A device for dosing a flowing fluid, the device comprising a disposable additive container and a casing, the casing having an inlet and outlet by means of which it can be connected into a fluid flow line and surfaces for guiding the flowing fluid in a converging pattern such as to create a zone of reduced pressure and a region of turbulence, the casing further having means therein for temporarily and releasably locating one of said containers, and being adapted to be opened to permit access to be had to said means, and the container comprising a bag and a nozzle, the bag being of flexible material which is impervious to the additive contained therein, and further being such that when impinged upon by a flowing fluid with sufficient force it progressively collapses to expel additive from the nozzle, and the nozzle including a bore leading from the interior of the bag and a removable formation blocking the end of the bore remote from the bag which formation, when removed, leaves behind an open-ended bore of predetermined length, said casing being so formed that the fluid flow path therein is such that the fluid flowing therethrough impinges on said bag to collapse the same and expel additive through the open end of the bore, and the relationship between the casing and the container being such that said open end of the bore is in said zone of reduced pressure into which zone the additive is expelled from the bore thereafter being drawn into said region of turbulence.
Claim 15
Dependent Claim
43 words
A device as claimed in claim 12, in which the outer surface of the nozzle is generally frusto-conical in form, and the container is positioned so that said outer surface complements said surfaces of the casing to promote formation of said converging pattern.
Claim 16
Dependent Claim
20 words
A device as claimed in claim 13, in which said surfaces of the casing define a converging ring of bores.
Claim 17
Dependent Claim
46 words
A device as claimed in claim 13, in which said frusto-conical surfaces of the nozzle merges with the outer surface of a forwardly directed spigot, the nozzle being cut where said spigot and nozzle surfaces merge to leave a flat face through which the bore opens.
Claim 18
Independent Claim
185 words
A method of dosing a flowing fluid which comprises the steps of: a. packaging the additive with which the fluid is to be dosed in a disposable container comprising a bag and a nozzle, the bag being of flexible material which is impervious to the additive contained therein, and the nozzle including a bore leading from the interior of the bag and a formation blocking the end of the bore remote from the bag; b. Connecting in the line through which said fluid flows a casing having an inlet and an outlet and which can be opened to permit access to be had to means within the casing for temporarily and releasably locating one of said container; c. Removing said formation to open said bore and leave behind a bore of predetermined length; d. Opening said casing; e. Removably locating the container with the open bore in the casing; f. Re-closing the casing; and g. Feeding said fluid through the container so that it impinges on the bag so as progressively to collapse the bag and expel additive through said bore into said flowing fluId.
Claim 19
Independent Claim
185 words
A method of dosing a flowing fluid which comprises the steps of: a. packaging the additive with which the fluid is to be dosed in a disposable container comprising a bag and a nozzle, the bag being of flexible material which is impervious to the additive contained therein, and the nozzle including a bore leading from the interior of the bag and a formation blocking the end of the bore remote from the bag; b. Connecting in the line through which said fluid flows a casing having an inlet and an outlet and which can be opened to permit access to be had to means within the casing for temporarily and releasably locating one of said container; c. Removing said formation to open said bore and leave behind a bore of predetermined length; d. Opening said casing; e. Removably locating the container with the open bore in the casing; f. Re-closing the casing; and g. Feeding said fluid through the container so that it impinges on the bag so as progressively to collapse the bag and expel additive through said bore into said flowing fluId.
Claim 20
Dependent Claim
31 words
A method as claimed in claim 16, wherein said fluid is gaseous and the method includes filtering the gas to remove solid particles before the additive is added to the gas.
Claim 21
Dependent Claim
37 words
A method according to claim 16, and further including the step of providing on the nozzle a mark to indicate where the nozzle should be cut, and cutting the nozzle at said mark to open the bore.
Claim 22
Dependent Claim
37 words
A method according to claim 16, and further including the step of forming the nozzle with a change of profile to indicate where the nozzle should be cut, and cutting the nozzle at said change of profile.
Claim 23
Independent Claim
260 words
A method of dosing a flowing fluid which comprises the steps of: a. packaging the additive with which the fluid is to be dosed in a disposable container comprising a bag and a nozzle, the bag being of flexible material which is impervious to the additive contained therein, and the nozzle including a bore leading from the interior of the bag and a formation blocking the end of the bore remote from the bag; b. Connecting in the line through which said fluid flows a casing having an inlet and an outlet and which can be opened to permit access to be had to means within the casing for temporarily and releasably locating one of said containers, the casing being formed with surfaces to guide the flowing fluid in a converging pattern for creating a zone of reduced pressure and a region of turbulance; c. Removing said formation to open said bore and leave behind a bore of predetermined length; d. Opening said casing; e. Removably locating the container with the open bore in the casing with the outlet from the bore positioned where said zone of reduced pressure is created in use; f. Re-closing the casing; and g. Feeding said fluid through the container so that it impinges on the bag so as progressively to collapse the bag and expel additive through said bore into said flowing fluid, expulsion of additive from the container being aided by the creation of said zone of reduced pressure, and the dispensed additive being drawn from said zone into said region of turbulence.
Claim 24
Independent Claim
260 words
A method of dosing a flowing fluid which comprises the steps of: a. packaging the additive with which the fluid is to be dosed in a disposable container comprising a bag and a nozzle, the bag being of flexible material which is impervious to the additive contained therein, and the nozzle including a bore leading from the interior of the bag and a formation blocking the end of the bore remote from the bag; b. Connecting in the line through which said fluid flows a casing having an inlet and an outlet and which can be opened to permit access to be had to means within the casing for temporarily and releasably locating one of said containers, the casing being formed with surfaces to guide the flowing fluid in a converging pattern for creating a zone of reduced pressure and a region of turbulance; c. Removing said formation to open said bore and leave behind a bore of predetermined length; d. Opening said casing; e. Removably locating the container with the open bore in the casing with the outlet from the bore positioned where said zone of reduced pressure is created in use; f. Re-closing the casing; and g. Feeding said fluid through the container so that it impinges on the bag so as progressively to collapse the bag and expel additive through said bore into said flowing fluid, expulsion of additive from the container being aided by the creation of said zone of reduced pressure, and the dispensed additive being drawn from said zone into said region of turbulence.
Claim 25
Dependent Claim
49 words
A method as claimed in claim 20 and including the step of shaping the outer surface of the nozzle so that it is generally frusto-conical in form, and positioning the container so that said outer surface complements said surface of the casing to promote formation of said converging pattern.
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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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |