Patent US4024982A successfully refreshed from Google Patents.
US4024982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure cooker
Assignee: AMC International Alfa Metalcraft Corp AG
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Filing: 1976-08-02
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Granted: 1977-05-24
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Expires: 1996-08-02
Abstract
Abstract A pressure cooker has a pan with a circumferential rim and a lid with a closure part rotatable concentrically thereto for locking the lid on the pan part in a pressure tight manner. The lid and closure part have peripheral flanges each engaging under the edge of the pan part over a maximum of half the length thereof. The flanges are movable into one another and are arranged so that the pan rim can be released from the flanges at least over half its circumference.
Inventors
- 👤 Horst Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:17
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/08; A47J27/0804; A47J27/0806; A47J27/09; A47J27/092; Y; Y10; Y10T; Y10T292/00; Y10T292/20; Y10T292/205
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
96 words
Pressure cooker consisting of a pan part and a lid which can be locked thereto in pressure tight manner, the pan part having a plain circumferential outwardly bent rim and the lid being provided with a closure part rotatable concentrically thereto, the lid and closure part having on their periphery flanges each engaging under the pan edge over a maximum of half the length thereof, these flanges being constructed so as to be movable into one another and arranged so that the pan rim can be released from the flanges at least over half its circumference.
Claim 2
Dependent Claim
96 words
Pressure cooker consisting of a pan part and a lid which can be locked thereto in pressure tight manner, the pan part having a plain circumferential outwardly bent rim and the lid being provided with a closure part rotatable concentrically thereto, the lid and closure part having on their periphery flanges each engaging under the pan edge over a maximum of half the length thereof, these flanges being constructed so as to be movable into one another and arranged so that the pan rim can be released from the flanges at least over half its circumference.
Claim 3
Dependent Claim
56 words
Pressure cooker according to claim 1, wherein the flanges are U-shaped in cross section, the flange of the closure part embracing the flange of the lid and the two flanges each having an end edge bent upwardly toward the underside of the pan rim, these end edges both abutting on the underside of the pan rim.
Claim 4
Dependent Claim
16 words
Pressure cooker according to claim 1, wherein the closure part is constructed as a closure ring.
Claim 5
Dependent Claim
21 words
Pressure cooker according to claim 1, wherein the closure part is also constructed as a lid rotatable concentrically to the lid.
Claim 6
Dependent Claim
22 words
Pressure cooker according to claim 1, wherein between the lid and the closure part is mounted a sliding ring made of plastic.
Claim 7
Dependent Claim
36 words
Pressure cooker according to claim 1, wherein on opposite sides of the closure part are mounted two handles which, in the closed position of the lid, are located directly above handles mounted on the pan part.
Claim 8
Dependent Claim
18 words
Pressure cooker according to claim 1, wherein the lid is provided with a guide for the closure part.
Claim 9
Dependent Claim
56 words
Pressure cooker according to claim 1, wherein an opening closable in the manner of a valve is mounted eccentrically in the lid, and on the closure part rotatable relative to the lid is mounted a closure member for the opening which can be placed over the opening when the closure position of the cooker is attained.
Claim 10
Dependent Claim
29 words
Pressure cooker according to claim 8, wherein the opening is constructed as a valve seating for a valve cone and a closure cam is mounted on the closure member.
Claim 11
Dependent Claim
27 words
Pressure cooker according to claim 8, wherein the opening is constructed as a valve seating for a closure head mounted in spring-loaded manner on the closure member.
References Cited (Backward Citations)
US3458083A
Cited
US3605337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |