US4201312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure cooker closure fastening means
Assignee: Individual
•
Filing: 1978-06-16
•
Granted: 1980-05-06
•
Expires: 1998-06-16
Abstract
Abstract A closure for a pressure cooker pot which includes a lid with a lateral keyway in the center, and a standpipe fixed to the lid, a key fitting in the keyway and removable lid locking means fixed to the key and reacting between the key and the pot. A pressure regulator when in position on the standpipe prevents the separation of the locking means from the lid by blocking the removal of the key.
Inventors
- 👤 Pedro Basile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:03
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/08; A47J27/09; A47J27/0804; A47J27/0808; B; B65; B65D; B65D45/00; B65D45/02; B65D45/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
121 words
A closure for a pressure cooker comprising a lid, lid locking means and interfitting means attached to said locking means and arranged to be removably attached to said lid and means for preventing detachment of said interfitting means from said lid, said interfitting means including a key attached to said locking means and a lateral keyway formed at the center of the lid, said key engaging in said keyway, and said preventing means including a standpipe projecting up from said lid adjacent said keyway forming a vent passage through said lid and a pressure regulator which sits on said standpipe, said regulator preventing the removal of said key from said keyway as long as it is in position on said standpipe.
Claim 2
Dependent Claim
121 words
A closure for a pressure cooker comprising a lid, lid locking means and interfitting means attached to said locking means and arranged to be removably attached to said lid and means for preventing detachment of said interfitting means from said lid, said interfitting means including a key attached to said locking means and a lateral keyway formed at the center of the lid, said key engaging in said keyway, and said preventing means including a standpipe projecting up from said lid adjacent said keyway forming a vent passage through said lid and a pressure regulator which sits on said standpipe, said regulator preventing the removal of said key from said keyway as long as it is in position on said standpipe.
Claim 3
Dependent Claim
24 words
A closure for a pressure cooker as defined in claim 1 wherein said locking means reacts between said pressure cooker pot and said keyway.
Claim 4
Dependent Claim
53 words
A closure for a pressure cooker as defined in claim 2 wherein said locking means includes a beam having a threaded passage in its center a threaded axle screwing into said passage, a knob affixed to the upper end of said axle, said key being affixed to the lower end of said axle.
Claim 5
Dependent Claim
36 words
A closure for a pressure cooker as defined in claim 3 and further comprising means formed in said lid for centering said beam on the lid to facilitate locking the lid to said pressure cooker pot.
References Cited (Backward Citations)
US1436427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |