US3913604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston-actuated fluid discharge device
Assignee: Individual
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Filing: 1972-07-13
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Granted: 1975-10-21
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Expires: 1992-07-13
Abstract
Abstract A device for storing and discharging fluid under high pressure includes a toroidal storage chamber and a coaxial spool, in which is mounted two plugs. One plug is formed with a bored gas discharge passage into which a nozzle insert providing a square orifice extends; this passage is normally sealed by a prestressed diaphragm. The second plug provides a cylinder slidably supporting a piston, and mounts a header plug containing gasgenerating means for driving the piston to puncture the diaphragm for releasing the gas charge. The spool is threaded in both plugs; and the storage chamber, plugs, and header plug, are connected by circumferential welds which completely seal the device. The fluid storage chamber is sealed from the gasgenerating means by spaced flanges and an O-ring so arranged on the piston as to avoid pinching and thus cracking the O-ring.
Inventors
- 👤 David E Hanson
- 👤 Harry M Landers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:40
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/26; B60R21/268; B01; B01J; B01J7/00; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1647; Y10T137/1692; Y10T137/1759; Y10T137/1767
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
272 words
A piston-actuated fluid-discharge device comprising, in combination: means forming a storage chamber for pressurized fluid comprising an annular shell having central openings at opposite axial ends thereof, a pair of plug members received conformably in said openings and welded circumferentially to said shell, and an annular cylindrical spool received coaxially within said shell and threaded at opposite ends thereof in said plug members, said spool being formed with an opening communicating the interior thereof with the interior of said shell; a first one of said plug members being formed with a fluid discharge passage of circular cross-section; a nozzle insert overlying an inlet end of said discharge passage and formed with a squared orifice portion extending into said passage; diaphragm means overlying said nozzle insert and normally sealing said storage chamber from said discharge passage; a second of said plug members being provided with means for puncturing said diaphragm means including cylinder-forming means extending axially within said spool, a piston slidably received in said cylinder-forming means and having a tip adapted for puncturing said diaphragm means, and gas-generating means received in said cylinder-forming means at an end of said piston opposite said tip for driving said piston forwardly in said cylinder-forming means for puncturing said diaphragm means; said piston being formed with a first circumferential flange portion conformably and slidably received in said cylinderforming means, and with a second circumferential flange portion spaced apart along said piston from said first flange portion, said second flange portion being circumferentially spaced apart from said cylinder-forming means; and sealing ring means received about said piston between said flange portions and sealingly engaging said cylinder-forming means.
Claim 2
Dependent Claim
272 words
A piston-actuated fluid-discharge device comprising, in combination: means forming a storage chamber for pressurized fluid comprising an annular shell having central openings at opposite axial ends thereof, a pair of plug members received conformably in said openings and welded circumferentially to said shell, and an annular cylindrical spool received coaxially within said shell and threaded at opposite ends thereof in said plug members, said spool being formed with an opening communicating the interior thereof with the interior of said shell; a first one of said plug members being formed with a fluid discharge passage of circular cross-section; a nozzle insert overlying an inlet end of said discharge passage and formed with a squared orifice portion extending into said passage; diaphragm means overlying said nozzle insert and normally sealing said storage chamber from said discharge passage; a second of said plug members being provided with means for puncturing said diaphragm means including cylinder-forming means extending axially within said spool, a piston slidably received in said cylinder-forming means and having a tip adapted for puncturing said diaphragm means, and gas-generating means received in said cylinder-forming means at an end of said piston opposite said tip for driving said piston forwardly in said cylinder-forming means for puncturing said diaphragm means; said piston being formed with a first circumferential flange portion conformably and slidably received in said cylinderforming means, and with a second circumferential flange portion spaced apart along said piston from said first flange portion, said second flange portion being circumferentially spaced apart from said cylinder-forming means; and sealing ring means received about said piston between said flange portions and sealingly engaging said cylinder-forming means.
Claim 3
Dependent Claim
117 words
A piston-actuated fluid-discharge device comprising, in combination: means forming a storage chamber for pressurized fluid including an outlet plug member formed with a fluid discharge passage of circular cross-section; a nozzle insert overlying an inlet end of said discharge passage and formed with a generally squared orifice portion having rounded corners, said orifice portion extending into said passage; diaphragm means overlying said nozzle insert and normally sealing said storage chamber from said discharge passage; means for puncturing said diaphragm means including cylinder-forming means, a piston slidably received in said cylinder-forming means and having a tip adapted for puncturing said diaphragm means, and means for driving said piston forwardly in said cylinder-forming means for puncturing said diaphragm means.
Claim 4
Dependent Claim
117 words
A piston-actuated fluid-discharge device comprising, in combination: means forming a storage chamber for pressurized fluid including an outlet plug member formed with a fluid discharge passage of circular cross-section; a nozzle insert overlying an inlet end of said discharge passage and formed with a generally squared orifice portion having rounded corners, said orifice portion extending into said passage; diaphragm means overlying said nozzle insert and normally sealing said storage chamber from said discharge passage; means for puncturing said diaphragm means including cylinder-forming means, a piston slidably received in said cylinder-forming means and having a tip adapted for puncturing said diaphragm means, and means for driving said piston forwardly in said cylinder-forming means for puncturing said diaphragm means.
Claim 5
Dependent Claim
31 words
A device as recited in claim 2, in which said generally squared orifice portion is formed with corners rounded to a radius less than half the width of said orifice portion.
Claim 6
Dependent Claim
27 words
A device as recited in claim 2, said diaphragm being pre-stressed by means of crossed linear indentations extending substantially along each diagonal of said squared orifice portion.
Claim 7
Dependent Claim
100 words
A device as recited in claim 2, in which said chamber-forming means includes an annular shell having central openings at opposite axial ends thereof, a further plug member, said outlet plug member and said further plug member being received conformably in said openings and welded cirCumferentially to said shell, and an annular cylindrical spool received coaxially within said shell and threaded at opposite ends thereof in said plug members; said spool being formed with an opening communicating the interior thereof with the interior of said shell, and receiving said piston and cylinder-forming means therein in alignment with said diaphragm means.
Claim 8
Dependent Claim
81 words
A device as recited in claim 5, in which said means for driving said piston comprises gas-generating means received in said cylinder-forming means at an end of said piston opposite said tip, said further plug member being formed with an axial bore receiving said cylinder-forming means, and a header plug including means for actuating said gas-generating means from an external location, said header plug being received conformably in said axial bore in said further plug member and being circumferentially welded thereto.
Claim 9
Dependent Claim
76 words
A device as recited in claim 2, said piston being formed with a first circumferential flange portion conformably and slidably received in said cylinder-forming means, and with a second circumferential flange portion spaced apart along with piston from said first flange portion toward said tip, said second flange portion being circumferentially spaced apart from said cylinder-forming means; together with sealing ring means received about said piston between said flange portions and sealingly engaging said cylinder-forming means.
Claim 10
Dependent Claim
173 words
A piston-actuated fluid-discharge device comprising, in combination: means forming a storage chamber for pressurized fluid comprising an annular shell having central openings at opposite axial ends thereof, a pair of plug members received conformably in said openings and welded circumferentially to said shell, and an annular cylindrical spool received coaxially within said shell and threaded at opposite ends thereof in said plug members, said spool being formed with an opening communicating the interior thereof with the interior of said shell; a first one of said plug members being formed with a fluid discharge passage; diaphragm means normally sealing said discharge passage, a second of said plug members being provided with means for puncturing said diaphragm means including cylinder-forming means extending axially within said spool, a piston slidably received in said cylinder-forming means and having a tip adapted for puncturing said diaphragm means, and gas-generating means received in said cylinder-forming means at an end of said piston opposite said tip for driving said piston forwardly in said cylinder-forming means for puncturing said diaphragm means.
Claim 11
Dependent Claim
173 words
A piston-actuated fluid-discharge device comprising, in combination: means forming a storage chamber for pressurized fluid comprising an annular shell having central openings at opposite axial ends thereof, a pair of plug members received conformably in said openings and welded circumferentially to said shell, and an annular cylindrical spool received coaxially within said shell and threaded at opposite ends thereof in said plug members, said spool being formed with an opening communicating the interior thereof with the interior of said shell; a first one of said plug members being formed with a fluid discharge passage; diaphragm means normally sealing said discharge passage, a second of said plug members being provided with means for puncturing said diaphragm means including cylinder-forming means extending axially within said spool, a piston slidably received in said cylinder-forming means and having a tip adapted for puncturing said diaphragm means, and gas-generating means received in said cylinder-forming means at an end of said piston opposite said tip for driving said piston forwardly in said cylinder-forming means for puncturing said diaphragm means.
Claim 12
Dependent Claim
94 words
A device as recited in claim 8, said second plug member being formed with a stepped axial bore providing a circumferential seat therein, said cylinder-forming means extending within said bore and being formed with an annular flange abutting said seat, together with a header plug received in said axial bore and overlying said flange to capture said cylinder-forming means in said second plug member, said header plug being circumferentially welded to said second plug member to securely retain said cylinder-forming means and said gas-generating means received therein in assembly with said second plug member.
Claim 13
Dependent Claim
53 words
A device as recited in claim 8, said second plug member being formed with an axial bore, together with a header plug including means for actuating said gas-generating means from an external location, said header plug being received conformably in said axial bore in said second plug member and being circumferentially welded thereto.
Claim 14
Dependent Claim
37 words
A device as recited in claim 10, said cylinder-forming means being received in said axial bore in said second plug member, said header plug overlying and positioning said cylinder-forming means with respect to said second plug member.
Claim 15
Dependent Claim
37 words
A device as recited in claim 11, together with a ferrule received in said cylinder-forming means between said header plug and said piston to locate said piston in a retracted position spaced apart from said Header plug.
Claim 16
Dependent Claim
15 words
A device as recited in claim 12, said gas-generating means being received in said ferrule.
Claim 17
Dependent Claim
72 words
A device as recited in claim 8, said piston being formed with a first circumferential flange portion conformably and slidably received in said cylinder-forming means, and with a second circumferential flange portion spaced apart along said piston from said first flange portion, said second flange portion being circumferentially spaced apart from said cylinder-forming means; and sealing ring means received about said piston between said flange portions and sealingly engaging said cylinder-forming means.
Claim 18
Dependent Claim
40 words
A device a recited in claim 8, said storage chamberforming means being formed with a tapered orifice for filling said chamber with a charge of fluid, together with a taper pin sealingly engaged in said orifice with a force fit.
Claim 19
Dependent Claim
29 words
A device as recited in claim 8, said spool being of a length to abut said shell at each of said central openings at said opposite axial ends thereof.
Claim 20
Dependent Claim
173 words
A piston-actuated fluid discharge device comprising in combination: means forming a storage chamber for pressurized fluid, said chamber being provided with a fluid discharge passage; diaphragm means normally sealing said discharge passage; means for puncturing said diaphragm means including cylinder-forming means, a piston slidably received in said cylinder-forming means and having a tip adapted for puncturing said diaphragm means, and gas-generating means received in said cylinder-forming means at an end of said piston opposite said tip for driving said piston forwardly in said cylinder-forming means for puncturing said diaphragm means; said chamber-forming means being formed with a stepped axial bore providing a circumferential seat therein, said cylinder-forming means extending within said bore and being formed with an annular flange engaging said seat, together with a header plug received in said axial bore and overlying said flange to capture said cylinder-forming means in said bore, said header plug being circumferentially welded to said chamber-forming means to securely retain said cylinder forming means and said gas-generating means received therein in assembly with said chamber-forming means.
Claim 21
Dependent Claim
173 words
A piston-actuated fluid discharge device comprising in combination: means forming a storage chamber for pressurized fluid, said chamber being provided with a fluid discharge passage; diaphragm means normally sealing said discharge passage; means for puncturing said diaphragm means including cylinder-forming means, a piston slidably received in said cylinder-forming means and having a tip adapted for puncturing said diaphragm means, and gas-generating means received in said cylinder-forming means at an end of said piston opposite said tip for driving said piston forwardly in said cylinder-forming means for puncturing said diaphragm means; said chamber-forming means being formed with a stepped axial bore providing a circumferential seat therein, said cylinder-forming means extending within said bore and being formed with an annular flange engaging said seat, together with a header plug received in said axial bore and overlying said flange to capture said cylinder-forming means in said bore, said header plug being circumferentially welded to said chamber-forming means to securely retain said cylinder forming means and said gas-generating means received therein in assembly with said chamber-forming means.
References Cited (Backward Citations)
US3266669A
Cited
US3319829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |