US3731837A - Cover plate - Google Patents

Cover plate Download PDF

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Publication number
US3731837A
US3731837A US00157111A US3731837DA US3731837A US 3731837 A US3731837 A US 3731837A US 00157111 A US00157111 A US 00157111A US 3731837D A US3731837D A US 3731837DA US 3731837 A US3731837 A US 3731837A
Authority
US
United States
Prior art keywords
cover plate
neck
balls
container
cage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00157111A
Other languages
English (en)
Inventor
D Platts
K Hunter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Descaling Co Ltd
Original Assignee
General Descaling Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Descaling Co Ltd filed Critical General Descaling Co Ltd
Application granted granted Critical
Publication of US3731837A publication Critical patent/US3731837A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J13/00—Covers or similar closure members for pressure vessels in general
    • F16J13/02—Detachable closure members; Means for tightening closures
    • F16J13/08—Detachable closure members; Means for tightening closures attached by one or more members actuated to project behind a part or parts of the frame
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/14—Ball

Definitions

  • ABSTRACT A container for transport or storage of liquid in bulk having a filling opening defined by an upstanding neck, the combination of a cover plate having a depending flange, by which the cover plate, when in position, is' located on said neck, interlocking means for positively securing the cover plate to the neck in cluding annular seating surfaces formed respectively on the neck and flange of the cover plate, a plurality of circumferentially arranged balls for operative engagement with said seating surfaces and by which the cover plate is positively held in position thereon, an annular cage encircling the neck and by means of which the balls are normally held in their operative position, the cage being capable of displacement by which the balls can be withdrawn from their operative position to a release position to permit removal of the cover plate.
  • Sheets-Sheet 5 COVER PLATE or lid for the filling opening of the container or tank of the vehicle.
  • interlocking means therefor comprising circumferentially located balls for engagement when in the locked or closed position of the cover plate with angularly inclined seating faces formed respectively on the said neck and flange portions, the balls being retained in a cage by means of which they can be withdrawn from the locked or closed position to a release position within an annular recess or recesses in the said fiange.
  • the arrangement has the advantage that any increase in pressure within the container tending to unseat the cover plate is transferred through the balls to the seating on the neck of the container opening.
  • the seating faces may be machined at an angle of 45, the seating on the neck of the container being formed as an undercut shoulder thereon and the seating on the flange of the cover plate being extended to form an entrant wall to the recess into which the balls can be withdrawn.
  • FIG. 1 is a sectional view of a cover plate
  • FIG. 2 is a detailed plan view
  • FIG. 3 is a transverse section of a cover plate constructed in accordance with the invention but having means by which it is supported for lateral swinging movements when released;
  • FIGS. 4 and 5 are detail sectional views showing cam operated means for effecting displacement of the ball cage when releasing the cover plate
  • FIG. 6 is a part sectional view showing a cover plate having an internal sealing plate.
  • 1 indicates the shell of a container or a cylindrical tank and 2 the neck or throat of a filling opening, 3 being part of a domed cover plate or lid.
  • the cover plate in accordance with this invention is retained in its closed position by a number of balls 4 mounted in openings in a caged formed as a carrier ring 5, the ring 5 having laterally projecting brackets 5' which, as shown in FIG. 2, are constructed in the form of a handle by means of which the cover plate as a whole can be raised prior to being lifted off the neck when it is to be removed.
  • bracket or handle 3 is provided on the cover plate or lid 3 so that the operator can apply pressure to the handle 5' by gripping both handles.
  • the cover plate 3 has a depending flange 7 and that both the flange 7 and an external shoulder 8 on the neck are formed with seating faces 10 and 11, with which the balls 4 interlock.
  • the seating faces 10 and 11 are similarly at an: angle (conveniently 45) to the vertical, being parallel or substantially parallel to one another and therefore any upward lift, i.e. thrust, to which the cover plate 3 may be subjected due to a rise of pressure in the tank or container 1 will be transmitted from the seating face 10 through the balls 4 to the seating face 11 on the neck 2, thereby preventing it from movement, so that the balls and their associated flanges function as inter-locking means.
  • the cover plate 3 is effectively sealed to the neck by a neoprene sealing ring 13of L-section, the cover plate being undercut so as to provide a flat 14 on which the ring 13 is located, the horizontal limb 15 of the ring projecting inwardly so as to overlie and make seal with the flat provided by the upper side of the shoulder 8.
  • stops in the form of lugs 17, either on the cover plate as shown or spaced circumferentially around the neck 2, may be provided.
  • the weight of the cover plate is considerable and may require several men to remove it.
  • the cover plate may be spring assisted in an upwards direction.
  • the cover plate is slidably mounted on vertical pins 20, 21, as shown in FIG. 3.
  • Sockets 22 are attached to the inside of the neck to receive the pins 20, 21, the socket for the longer pin housing a compression spring 23.
  • the slot is so proportioned that the condition as in FIG. 1 is retained above the balls so that cover pressure equates to ball locking as before.
  • a slight carriage i.e. cage 5 lift for this arrangement would require more lifting effort than available from simple handles and some form of elementary jacking between parts 1 and 5 could be provided.
  • a pair of simple scroll cams could be mounted on parts 1 and 2 beneath the cage. They would take no part in normal operation but if the cover could not be unlocked because of initial pressure (the desirable feature of the design) the ball cage could be cammed upwards a controlled amount to permit blow down without risk of release.
  • the cams or equivalent mechanical advantage lift the cage sufficiently for the balls to be lifted into the right position. Further lifting by hand would release the closure in the normal way.
  • FIGS. 4 and 5 One arrangement embodying a lift cam is shown in FIGS. 4 and 5 in which provision is made for raising the ball cage 5 by means of a cam mechanism.
  • a spindle 30 is rotatably mounted in a bearing housing lug 31 attached to the container wall.
  • a cam element 32 Fast on one end of the spindle 30 is a cam element 32, the face of which underlies the horizontal limb 25 of the cage.
  • On the outer end of the spindle 30 is a squared boss 33 to receive a turn buckle or lever 34 by which the cam 32 can be turned from the closed position shown in FIG. 4 to the open position shown in FIG. 5, in which the ball cage 5 has been raised to force the balls 4 into the recess 12.
  • the mechanism is duplicated on opposite sides of the neck opening.
  • the amount of lift of the cage can be controlled merely by turning the lever 34 through a greater or smaller angle to suit operating conditions.
  • the cover plate 3 has attached to its underside a dish-shaped sealing disc 27 having a shouldered edge 28 which when the cover plate is in position makes sealing contact with the upper edge of the neck 2.
  • Disc 27 is secured to the plate 3 by a threaded stud on the underside of the plate and a fixing nut 29.
  • the inner space between the cover plate and disc is maintained at a small pressure.
  • the existence of such pressure is a positive guarantee to the operator that moisture and contaminants have not and cannot enter the interior chamber of the container beneath the sealing disc. In this particular case the interior chamber itself, although sealed, would not be pressurized.
  • a further advantage of the cover plate of this invention is that the operative surfaces which require precision machining are protected from the weather in that they lie beneath the cover plate.
  • a cover plate having a depending flange, by which the cover plate, when in position, is located on said neck, and interlocking means for positively securing the cover plate to the neck including annular seating surfaces formed respectively on the neck and flange of the cover plate, said seating surfaces being angularly inclined relatively to the axis of said opening, a plurality of circumferentially arranged balls for operative engagement with said seating surfaces and by which the cover plate is positively held in position thereon, an annular cage encircling the neck and by means of which the balls are normally held in their operative position, said flange having an annular recess to receive the balls, the cage being capable of displacement by which the balls can be withdrawn from their operative position to a release position within said annular recess to permit removal of the cover plate.
  • a container as claimed in claim 1 in which the cover plate is provided with a sealing ring of L-shaped section, the base of the L having an inwardly projecting portion for engagement with a flat on the neck.
  • a container as claimed in claim 2 in which the neck is formed with an annular shoulder on the underside of which the seating surface for the balls is formed and with the upper side of which the sealing ring engages.
  • a cover plate having a dependent flange for engagement with the neck, a sealing ring on the flange for engagement with the neck to seal the contents against escape from the container, interlocking means for positively securing the cover plate to the neck including seating surfaces formed respectively on the flange and the neck and being similarly angularly inclined to the axis of said opening, a plurality of balls diametrically opposite sides of which abut said seating surfaces when in the closed position of the cover plate, an annular cage encircling the neck by which the balls are maintained in their operative position to hold the cover plate against release, said cage being capable of displacement byv which the sealing ring is disengaged and the balls can be withdrawn from their operative position to a release position within an annular recess in said flange to permit removal of the cover plate.
  • a container as claimed in claim 4 in which the sealing ring is of L-shaped section, the horizontal limb of the L having an inwardly projecting portion for engagement with the neck.
  • a cover plate as claimed in claim 4 in which the cover plate is provided with circumferentially spaced lugs for engagement with the neck by which it is located when in its closed position.
  • a cover plate as claimed in claim 7 in which the neck is formed with upstanding pins, one of which is 10.
  • a cover plate as claimed in claim 8 in which sockets are provided on the inside of the neck to receive the pins.
  • a cover plate as claimed in claim 4 comprising a cage having elongated holes whereby the cover plate may be raised a distance sufficient to break the seal prior to withdrawal of the balls.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
US00157111A 1970-12-11 1971-06-28 Cover plate Expired - Lifetime US3731837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5897470A GB1361397A (en) 1970-12-11 1970-12-11 Cover plate assembly

Publications (1)

Publication Number Publication Date
US3731837A true US3731837A (en) 1973-05-08

Family

ID=10482802

Family Applications (1)

Application Number Title Priority Date Filing Date
US00157111A Expired - Lifetime US3731837A (en) 1970-12-11 1971-06-28 Cover plate

Country Status (6)

Country Link
US (1) US3731837A (enrdf_load_stackoverflow)
CA (1) CA952830A (enrdf_load_stackoverflow)
DE (1) DE2134934B2 (enrdf_load_stackoverflow)
FR (1) FR2117632A5 (enrdf_load_stackoverflow)
GB (1) GB1361397A (enrdf_load_stackoverflow)
IT (1) IT945380B (enrdf_load_stackoverflow)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2408082A1 (de) * 1971-02-15 1975-08-28 Altvater J Einrichtung zur beseitigung von abfallstoffen wie muell
US4288001A (en) * 1980-07-15 1981-09-08 Gulf & Western Manufacturing Company Closure arrangement for pressure device
US4294376A (en) * 1980-01-03 1981-10-13 Keller Russell D Fuel tank cap
US4395256A (en) * 1980-12-13 1983-07-26 Heraeus-Christ Gmbh Centrifuge rotor closure
US5024474A (en) * 1989-10-24 1991-06-18 Selsys Corporation Locking cam latch mechanism
US5094358A (en) * 1991-02-26 1992-03-10 Serio Sr Joseph L Locking mechanism for container lid
US5102002A (en) * 1991-01-16 1992-04-07 Whitley Charlie D Beverage cup lid
US5175918A (en) * 1990-01-31 1993-01-05 Gary Christopher Portable container with pivotable closure and method of manufacture thereof
US5228587A (en) * 1992-11-23 1993-07-20 Worthington James N Flange cap for high vacuum system
US5474341A (en) * 1994-07-11 1995-12-12 Fikes, Inc. Gravity actuated container lock
EP0721040A3 (en) * 1994-12-06 1997-03-05 Christopher Alan Goodland Holding device
US6053348A (en) * 1996-05-01 2000-04-25 Morch; Leo Pivotable and sealable cap assembly for opening in a large container
US6550780B1 (en) * 1999-12-03 2003-04-22 Meritor Heavy Vehicle Systems, Llc Washer seal for a cam braking system
US20060090635A1 (en) * 2002-10-30 2006-05-04 Lockheed Martin Corporation Article comprising a canister closure with pressure-pulse release
US20150008233A1 (en) * 2013-07-02 2015-01-08 Drs Power & Control Technologies, Inc. Quick opening injection port
US20160237720A1 (en) * 2013-09-30 2016-08-18 Mgt Industries S.R.L. Quick connection and/or fixing system for door leaves, flaps or similar elements and door leaf provided with said system
US20240068774A1 (en) * 2022-08-31 2024-02-29 Raytheon Company Effector inlet cover, and method of separation

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4243844B4 (de) * 1992-12-23 2004-03-25 Voss Automotive Gmbh Anschlußvorrichtung für Rohrleitungen
GB2342137A (en) * 1998-10-01 2000-04-05 Plenty Ltd Closure
CN112919699B (zh) * 2019-12-06 2024-06-11 捷通国际有限公司 水处理系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US19910A (en) * 1858-04-13 Railroad-car seat
US2854274A (en) * 1955-08-30 1958-09-30 North American Aviation Inc Pressure reservoir cap
US3219228A (en) * 1960-07-19 1965-11-23 Atomic Energy Authority Uk Ball lock clamping devices
US3617081A (en) * 1970-02-27 1971-11-02 Bio Consultants Inc Latching mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US19910A (en) * 1858-04-13 Railroad-car seat
US2854274A (en) * 1955-08-30 1958-09-30 North American Aviation Inc Pressure reservoir cap
US3219228A (en) * 1960-07-19 1965-11-23 Atomic Energy Authority Uk Ball lock clamping devices
US3617081A (en) * 1970-02-27 1971-11-02 Bio Consultants Inc Latching mechanism

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2408082A1 (de) * 1971-02-15 1975-08-28 Altvater J Einrichtung zur beseitigung von abfallstoffen wie muell
US4294376A (en) * 1980-01-03 1981-10-13 Keller Russell D Fuel tank cap
US4288001A (en) * 1980-07-15 1981-09-08 Gulf & Western Manufacturing Company Closure arrangement for pressure device
US4395256A (en) * 1980-12-13 1983-07-26 Heraeus-Christ Gmbh Centrifuge rotor closure
US5024474A (en) * 1989-10-24 1991-06-18 Selsys Corporation Locking cam latch mechanism
US5175918A (en) * 1990-01-31 1993-01-05 Gary Christopher Portable container with pivotable closure and method of manufacture thereof
US5102002A (en) * 1991-01-16 1992-04-07 Whitley Charlie D Beverage cup lid
US5094358A (en) * 1991-02-26 1992-03-10 Serio Sr Joseph L Locking mechanism for container lid
US5228587A (en) * 1992-11-23 1993-07-20 Worthington James N Flange cap for high vacuum system
US5474341A (en) * 1994-07-11 1995-12-12 Fikes, Inc. Gravity actuated container lock
EP0721040A3 (en) * 1994-12-06 1997-03-05 Christopher Alan Goodland Holding device
US6053348A (en) * 1996-05-01 2000-04-25 Morch; Leo Pivotable and sealable cap assembly for opening in a large container
US6550780B1 (en) * 1999-12-03 2003-04-22 Meritor Heavy Vehicle Systems, Llc Washer seal for a cam braking system
US20060090635A1 (en) * 2002-10-30 2006-05-04 Lockheed Martin Corporation Article comprising a canister closure with pressure-pulse release
US7685920B2 (en) * 2002-10-30 2010-03-30 Lockheed Martin Corporation Article comprising a canister closure with pressure-pulse release
US20150008233A1 (en) * 2013-07-02 2015-01-08 Drs Power & Control Technologies, Inc. Quick opening injection port
US9345917B2 (en) * 2013-07-02 2016-05-24 Drs Power & Control Technologies, Inc. Quick opening injection port
US20160237720A1 (en) * 2013-09-30 2016-08-18 Mgt Industries S.R.L. Quick connection and/or fixing system for door leaves, flaps or similar elements and door leaf provided with said system
US20240068774A1 (en) * 2022-08-31 2024-02-29 Raytheon Company Effector inlet cover, and method of separation
US12117264B2 (en) * 2022-08-31 2024-10-15 Raytheon Company Effector inlet cover, and method of separation

Also Published As

Publication number Publication date
DE2134934C3 (enrdf_load_stackoverflow) 1974-01-24
DE2134934A1 (de) 1972-06-22
CA952830A (en) 1974-08-13
IT945380B (it) 1973-05-10
DE2134934B2 (de) 1973-07-05
FR2117632A5 (enrdf_load_stackoverflow) 1972-07-21
GB1361397A (en) 1974-07-24

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