Patent DE970970C successfully refreshed from Google Patents.
US3791561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure relief system for an aerosol dispenser
Assignee: AptarGroup Inc
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Filing: 1971-07-08
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Granted: 1974-02-12
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Expires: 1991-07-08
Abstract
Abstract A pressure relief system for an aerosol dispenser utilizing resilient flexing rings or gaskets arranged in sealing relationship relative to vent ports and/or relief passageways so that, at a predetermined pressure, the force of the propellant and product within the aerosol dispenser acts outwardly against these flexing members to break the seal. Uniquely, the same vent ports and/or relief passageways may be used to pressure fill the aerosol dispenser. In one embodiment, a rotatable button overcap is included as a locking means to prevent inadvertent discharge.
Inventors
- 👤 R Ewald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:50
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/70; B65D83/16; B65D83/162; B65D2215/00; B65D2215/04
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
118 words
A pressure relief system for an aerosol dispenser including at least one turret formed thereon, said pressure relief system including flexible sealing means comprising an annular ring having a pressure control means formed thereon, said pressure control means configured to control the pressure release point, said sealing means mounted directly on said turret and in sealing engagement with said turret to seal at least one vent port formed in said dispenser, said pressure control means arranged relative to said vent port such that the interior pressure of said dispenser acts directly against said sealing means immediately adjacent said vent port to break said sealing engagement of said sealing means with said turret at the predetermined pressure release point.
Claim 2
Dependent Claim
118 words
A pressure relief system for an aerosol dispenser including at least one turret formed thereon, said pressure relief system including flexible sealing means comprising an annular ring having a pressure control means formed thereon, said pressure control means configured to control the pressure release point, said sealing means mounted directly on said turret and in sealing engagement with said turret to seal at least one vent port formed in said dispenser, said pressure control means arranged relative to said vent port such that the interior pressure of said dispenser acts directly against said sealing means immediately adjacent said vent port to break said sealing engagement of said sealing means with said turret at the predetermined pressure release point.
Claim 3
Dependent Claim
18 words
The system of claim 1 wherein said dispenser includes a valve mounting cup having said turret formed thereon.
Claim 4
Dependent Claim
20 words
The system of claim 1 wherein said vent port is formed in a turret on the base of said dispenser.
Claim 5
Dependent Claim
34 words
The system of claim 1 wherein said dispenser includes a container and valve mounting cup attached thereto, said vent port comprising an open space cooperatively formed between said container and said valve mounting cup.
Claim 6
Dependent Claim
22 words
The system of claim 1 wherein said vent port is formed between the mounting cup of said dispenser and its valve stem.
Claim 7
Dependent Claim
26 words
The system of claim 1 wherein said external relief ring further includes retaining means to fix the position of said relief ring relative to said turret.
Claim 8
Dependent Claim
32 words
The system of claim 6 wherein said retaining means comprises a substantially cylindrical member of such size relative to said ring and said turret to firmly hold said ring to said turret.
Claim 9
Dependent Claim
31 words
The system of claim 6 wherein said retaining means comprises an undercut formed in the upper portion of said turret to press fit said ring into sealing engagement with said turret.
Claim 10
Dependent Claim
19 words
The system of claim 1 further including a tamperproof means comprises a substantially cup-shaped cap mounted over said turret.
Claim 11
Dependent Claim
36 words
The system of claim 9 wherein said cap includes an annular ridge formed on its inner surface which engages a corresponding annular slot formed in turret to lock said cap in place relative to said turret.
Claim 12
Dependent Claim
32 words
The system of claim 9 wherein said cap includes apertures formed in the lower portion of said cap to act as diffusers for product and propellant escaping through said pressure relief system.
Claim 13
Dependent Claim
26 words
The system in claim 9 wherein said tamper-proof means includes a locking means arranged on said tamper-proof means to prevent inadvertant dispensing of product and propellant.
Claim 14
Dependent Claim
92 words
The system of claim 12 wherein said locking means comprises a locking overcap mounted on said tamperproof means by locking feet formed on the lower portion of said locking overcap adapted to cooperatively engage a plurality of interrupted locking grooves formed on the surface of such means such that the vertical position of said locking means relative to the valve assembly is fixed and whereby by rotating said locking overcap said locking feet are disaligned from said locking grooves thereby permitting the vertical movement of said locking overcap to activate said dispenser.
Claim 15
Dependent Claim
17 words
The system of claim 13 including an indicator means to indicate a ''''spray'''' and a ''''lock'''' position.
Claim 16
Dependent Claim
47 words
The system of claim 14 wherein said indicator means includes a post on said tamperproof cap indicating ''''lock,'''' and adapted to wedge in an aperture formed in said locking overcap to prevent rotation of said locking overcap relative to said tamperproof cap when in the locked position.
Claim 17
Dependent Claim
40 words
The system of claim 1 wherein said vent port is formed in a turret formed on said dispenser and said annular ring comprises an external relief ring stretched over said turret in sealing engagement with said vent port formed thereon.
Claim 18
Dependent Claim
33 words
The system of claim 1 wherein said control means comprises a chamber formed in the inner surface of said annular ring immediately adjacent of said vent port to control the pressure release point.
Claim 19
Dependent Claim
37 words
The system of claim 1 wherein said control means comprises an undercut formed in said annular ring from its outer surface to its inner surface immediately adjacent to said vent port to control the pressure release point.
Claim 20
Dependent Claim
34 words
The system of claim 1 including a guide means formed on the inner wall of said turret immediately adjacent said vent port to direct fluid against said annular ring immediately adjacent said vent port.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |