Patent US3888045A successfully refreshed from Google Patents.
US3888045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction for mounting a door of a pit mounted pressure vessel
Assignee: WSF IND Inc
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Filing: 1974-05-30
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Granted: 1975-06-10
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Expires: 1994-05-30
Abstract
Abstract A hinge arrangement is provided for supporting the door of a pit mounted pressure vessel for vertically reciprocating and horizontally swinging opening-closing movements, whereby to minimize the ''''bridging'''' distance between the vessel and the front of the pit.
Inventors
- 👤 Henry J Piegza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:25
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/16; F16J13/20; E; E05; E05F; E05F15/00; E05F15/50; E05F15/53; F16J10/00; E05Y; E05Y2900/00; E05Y2999/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
297 words
A door mounting mechanism for use with a horizontally disposed pressure vessel of the type having a shell defining access opening closeable by said door and a rotatable locking ring mechanism for releasably locking said door in access opening closed position, said shell being mounted within a pit of a depth sufficient to permit a material carrier to be moved essentially horizontally into and out of said shell when said door is in an open position over a bridge removably positioned to bridge between said shell and a floor surface in front of said pit, said mounting mechanism serving to mount said door for both vertical reciprocating and horizontal swinging opening-closing movements between open and closed positions, whereby the ''''bridging'''' distance between said shell and said floor surface is less than that required to accommodate solely for horizontally directed swinging movements of said door between said positions, and said mounting mechanism comprising: a vertically extending bearing shaft; a first hinge part for mounting said bearing shaft for both horizontally directed rotary and vertically directed reciprocating movements; a second hinge part having one end thereof affixed to said bearing shaft for movement therewith and an opposite end thereof connected to said door; a lift control cylinder for imparting vertical reciprocating movements to said bearing shaft, whereby to effect vertical reciprocating movements of said door; a swing control cylinder for imparting rotary movements to said bearing shaft; whereby to effect horizontal swinging movements of said door; and circuit means for sequentially controlling operation of said lift and swing control cylinders, whereby in succession to swing said door horizontally from closed position sufficiently to clear said locking ring mechanism, to lift said door vertically sufficiently to clear said floor surface and to swing said door horizontally into said open position.
Claim 2
Dependent Claim
297 words
A door mounting mechanism for use with a horizontally disposed pressure vessel of the type having a shell defining access opening closeable by said door and a rotatable locking ring mechanism for releasably locking said door in access opening closed position, said shell being mounted within a pit of a depth sufficient to permit a material carrier to be moved essentially horizontally into and out of said shell when said door is in an open position over a bridge removably positioned to bridge between said shell and a floor surface in front of said pit, said mounting mechanism serving to mount said door for both vertical reciprocating and horizontal swinging opening-closing movements between open and closed positions, whereby the ''''bridging'''' distance between said shell and said floor surface is less than that required to accommodate solely for horizontally directed swinging movements of said door between said positions, and said mounting mechanism comprising: a vertically extending bearing shaft; a first hinge part for mounting said bearing shaft for both horizontally directed rotary and vertically directed reciprocating movements; a second hinge part having one end thereof affixed to said bearing shaft for movement therewith and an opposite end thereof connected to said door; a lift control cylinder for imparting vertical reciprocating movements to said bearing shaft, whereby to effect vertical reciprocating movements of said door; a swing control cylinder for imparting rotary movements to said bearing shaft; whereby to effect horizontal swinging movements of said door; and circuit means for sequentially controlling operation of said lift and swing control cylinders, whereby in succession to swing said door horizontally from closed position sufficiently to clear said locking ring mechanism, to lift said door vertically sufficiently to clear said floor surface and to swing said door horizontally into said open position.
Claim 3
Dependent Claim
25 words
A mechanism according to claim 1, wherein said circuit means includes means for releasably locking said lift control cylinder in all door lifting positions thereof.
Claim 4
Dependent Claim
23 words
A mechanism according to claim 2, wherein said circuit means includes means for releasably locking said swing control cylinder in all conditions thereof.
Claim 5
Dependent Claim
202 words
A mechanism according to claim 1, wherein said lift control cylinder includes a vertically extending piston rod having its upper end supportingly coupled to a lower end of said bearing shaft by a rotatable thrust bearing; and said circuit means includes conduits connected into lower and upper ends of said lift control cylinder, valve means for selectively connecting said conduits to a source of fluid under pressure whereby to extend and retract said piston rod to lift and lower said bearing shaft, respectively, and means for releasably locking said piston rod in all extended positions thereof until operation of said valve means to place said source of fluid under pressure in communication with said upper end of said cylinder, said locking means including a check valve arranged in the conduit connected in said lower end of said cylinder for permitting passage of fluid therethrough only in a direction towards said lower end of said cylinder, a bypass valve connected into said conduit across said check valve and a control for opening said bypass valve only in response to the operation of said valve means placing said upper end of said cylinder in communication with said source through the other of said conduits.
Claim 6
Dependent Claim
97 words
A mechanism according to claim 1, wherein said circuit means includes conduits connected into opposite ends of said swing control cylinder, valve means for selectively connecting said conduits to a source of fluid under pressure whereby to Retract and extend said swing control cylinder to effect horizontal swinging movement of said door, and additional valve means in each of said conduits for permitting flow of fluid from an associated end of said lift control cylinder only upon operation of said valve means to connect an opposite end of said cylinder to said source of fluid under pressure.
Claim 7
Dependent Claim
261 words
A pressure vessel comprising in combination: a pressure vessel shell having a horizontally open access opening and mounting therewithin material support means accessible through said access opening, said shell being mounted within a pit for positioning said material support means in substantially horizontal alignment with a floor surface in front of said pit; a door for removably closing said access opening; locking means carried by said shell for releasably locking said door in access opening closed position, said door when in said closed position being partially within the confines of both said pit and said locking means; hinge means for supporting said door for both horizontally directed swinging and vertically directed reciprocating movements between said closed position and an access opening open position, wherein said door is removed from within the confines of both said pit and said locking means and disposed above said floor surface; control means for effecting movement of said door between said closed and open positions successively through a first intermediate position effected by a horizontally swinging displacement of said door from said closed position to remove said door from within the confines of said locking means and a second intermediate position effected by a vertical displacement of said door from said first intermediate position to remove said door vertically from within the confines of said pit, said door being swung horizontally from said second intermediate position into said fully open position; and a bridge for removably bridging the distance between said floor surface and said material support means when said door is in said open position.
Claim 8
Dependent Claim
261 words
A pressure vessel comprising in combination: a pressure vessel shell having a horizontally open access opening and mounting therewithin material support means accessible through said access opening, said shell being mounted within a pit for positioning said material support means in substantially horizontal alignment with a floor surface in front of said pit; a door for removably closing said access opening; locking means carried by said shell for releasably locking said door in access opening closed position, said door when in said closed position being partially within the confines of both said pit and said locking means; hinge means for supporting said door for both horizontally directed swinging and vertically directed reciprocating movements between said closed position and an access opening open position, wherein said door is removed from within the confines of both said pit and said locking means and disposed above said floor surface; control means for effecting movement of said door between said closed and open positions successively through a first intermediate position effected by a horizontally swinging displacement of said door from said closed position to remove said door from within the confines of said locking means and a second intermediate position effected by a vertical displacement of said door from said first intermediate position to remove said door vertically from within the confines of said pit, said door being swung horizontally from said second intermediate position into said fully open position; and a bridge for removably bridging the distance between said floor surface and said material support means when said door is in said open position.
Claim 9
Dependent Claim
39 words
A pressure vessel according to claim 6, wherein said bridge is pivotally supported by said material support means and dimensioned to permit upwardly directed swinging movement thereof to assume a bridge stored position within the confines of said shell.
Claim 10
Dependent Claim
89 words
A pressure vessel according to claim 6, wherein said hinge means includes a vertically extending bearing shaft, a first hinge part for mounting said bearing shaft for both horizontally directed rotary and vertically directed reciprocating movements, a second hinge part having one end thereof fixed to said bearing shaft for movement therewith and an opposite end thereof connected to said door; and said control means includes independent means for effecting rotary and reciprocating movements of said bearing shaft and corresponding horizontal swinging and vertical reciprocating movements of said door.
Claim 11
Dependent Claim
194 words
A pressure vessel according to claim 6, wherein said hinge means includes a vertically extending bearing shaft, a first hinge part fixed to said shell and carrying vertically aligned upper and lower bearing devices for supporting said bearing shaft for both horizontally directed rotary and vertically directed reciprocating movements, a second hinge part having one end thereof fixed to said bearing shaft for movement therewith and an opposite end thereof connected to said door; and said control means includes a lift control cylinder for imparting vertical reciprocating movements to said bearing shaft, said lift control cylinder having a cylinder portion fixed within said pit and a vertically displaceable piston rod arranged in vertical alignment with said bearing shaft, said piston rod having an upper end thereof connected to a lower end of said bearing shaft by a rotatable thrust bearing, a swing control cylinder for imparting rotary movements to said bearing shaft, said swing control cylinder having cylinder and piston rod portions thereof connected one to each of said shell and said second hinge part for relative universal movements, and fluid circuit means for sequentially controlling operation of said lift and swing control cylinders.
Claim 12
Dependent Claim
185 words
A pressure vessel according to claim 9, wherein said circuit means includes conduits connected into upper and lower ends of said lift control cylinder portion, valve means for selectively connecting said conduits to a source of fluid under pressure whereby to extend and retract its associated piston rod to lift and lower said bearing shaft, respectively, and means for releasably locking said associated piston rod in all extended positions thereof until operation of said valve means to place said source of fluid under pressure in communication with said upper end of said cylinder portion, said locking means including a check valve arranged within the conduit connected into said lower end of said cylinder portion for permitting passage of fluid therethrough only in a direction towards said lower end of said cylinder portion, a bypass valve connected into said conduit across said check valve and a control for opening said bypass valve only in response to the operation of said valve means placing said upper end of said cylinder portion in flow communication with said source of fluid under pressure through the other of said conduits.
Claim 13
Dependent Claim
112 words
A pressure vessel according to claim 10, wherein said circuit means additionally includes conduits connected into opposite ends of said swing control cylinder portion, valve means for selectively connecting the last said conduits to said source of fluid under pressure whereby to retract and extend said swing control cylinder piston rod to effect horizontal swinging movements of said door, and additional valve means in each of the last said conduits for permitting flow of fluid from an associated end of said lift control cylinder portion only open operation of the last said valve means to connect an opposite end of said swing control cylinder portion to said source of fluid under pressure.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |