Patent US3105391A successfully refreshed from Google Patents.
Patent US3924778A successfully refreshed from Google Patents.
US3924778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessel seal and lock
Assignee: AMF Inc
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Filing: 1974-12-20
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Granted: 1975-12-09
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Expires: 1994-12-20
Abstract
Abstract The lid of a pressure vessel is sealed and locked closed by a handle which requires two distinct movements, one to break the seal, and the other to open the lid.
Inventors
- 👤 Egon Sorensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:27
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/08; A47J27/09; A47J27/092; F; F16; F16J; F16J13/00; F16J13/16; F16J13/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
157 words
A mechanism for sealing and locking a cover to an opening, said mechanism comprising a block on opposite sides of said opening, a cylindrical hole in each of said blocks, said holes being aligned on a common axis, a cylindrical tube extending between said blocks, a cylindrical bearing in each of said holes, cylindrical eccentrics on each of said bearings extending into opposite ends of said tube, means connecting said eccentrics to said tube whereby said bearings, eccentrics and tube rotate in unison, means rotatable with respect to said tube for suspending said cover off said tube, one of said blocks having pivotal mounting for hinged movement away from said opening, the bearing in the other of said blocks being adapted for sliding movement into and out of the same, and handle means connected to said last mentioned bearing to either rotate the same in its block or to move it in and out of its block.
Claim 2
Dependent Claim
157 words
A mechanism for sealing and locking a cover to an opening, said mechanism comprising a block on opposite sides of said opening, a cylindrical hole in each of said blocks, said holes being aligned on a common axis, a cylindrical tube extending between said blocks, a cylindrical bearing in each of said holes, cylindrical eccentrics on each of said bearings extending into opposite ends of said tube, means connecting said eccentrics to said tube whereby said bearings, eccentrics and tube rotate in unison, means rotatable with respect to said tube for suspending said cover off said tube, one of said blocks having pivotal mounting for hinged movement away from said opening, the bearing in the other of said blocks being adapted for sliding movement into and out of the same, and handle means connected to said last mentioned bearing to either rotate the same in its block or to move it in and out of its block.
Claim 3
Dependent Claim
67 words
In a mechanism, as in claim 1, said handle means being connected to said last mentioned bearing at the end thereof opposite its eccentric by a flat portion, a slot in the block of said last mentioned bearing intersecting its hole, and said flat handle portion being adapted to exit and enter said slot as said last mentioned bearing moves in and out of its block respectively.
Claim 4
Dependent Claim
154 words
In a mechanism, as in claim 2, a compressible seal located between said cover and opening, wherein said handle means can be operated to rotate said last mentioned bearing to turn said eccentrics to lower said cover on said opening to make said seal only after said handle flat portion is first pulled through said slot to position said last mentioned bearing in its block to lock said cover closed with respect to said opening, whereby said handle means must first be rotated to align said flat portion with said slot before said last mentioned bearing can be moved out of its block to unlock said cover wherein said seal is always first broken and then said cover unlocked by two distinctly different movements, first a rotary one, and then a linear one, whereby said last mentioned bearing, handle flat portion, and block with slot operate as a sequential safety lock for said mechanism.
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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |