US3291195A - Tape reinforced grain door panel - Google Patents

Tape reinforced grain door panel Download PDF

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Publication number
US3291195A
US3291195A US334835A US33483563A US3291195A US 3291195 A US3291195 A US 3291195A US 334835 A US334835 A US 334835A US 33483563 A US33483563 A US 33483563A US 3291195 A US3291195 A US 3291195A
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US
United States
Prior art keywords
grain
door
main panel
grain door
corrugated
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
US334835A
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English (en)
Inventor
David H Blatt
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.)
WALNUT IND CO
Original Assignee
WALNUT IND CO
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
Priority to BE621497D priority Critical patent/BE621497A/xx
Priority to NL282120D priority patent/NL282120A/xx
Priority to GB27349/62A priority patent/GB976157A/en
Priority to SE8429/62A priority patent/SE309791B/xx
Priority to FR906574A priority patent/FR1338482A/fr
Priority to CH1007662A priority patent/CH390785A/fr
Priority to US334835A priority patent/US3291195A/en
Application filed by WALNUT IND CO filed Critical WALNUT IND CO
Priority to GB12174/64A priority patent/GB998906A/en
Priority to FR973064A priority patent/FR85674E/fr
Priority to BE647465D priority patent/BE647465A/xx
Priority to CH696764A priority patent/CH413894A/fr
Priority to AT493264A priority patent/AT252304B/de
Priority to NL6406544A priority patent/NL6406544A/xx
Priority to ES301361A priority patent/ES301361A2/es
Application granted granted Critical
Publication of US3291195A publication Critical patent/US3291195A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides
    • B60J5/0497—Doors arranged at the vehicle sides for load transporting vehicles or public transport, e.g. lorries, trucks, buses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/003—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading vehicles with loading gates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
    • B60P1/28—Tipping body constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P7/00—Securing or covering of load on vehicles
    • B60P7/06—Securing of load
    • B60P7/135—Securing or supporting by load bracing means
    • B60P7/14—Securing or supporting by load bracing means the load bracing means comprising a movable bulkhead
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D19/00—Door arrangements specially adapted for rail vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D19/00—Door arrangements specially adapted for rail vehicles
    • B61D19/001—Door arrangements specially adapted for rail vehicles for wagons or vans
    • B61D19/002—Door arrangements specially adapted for rail vehicles for wagons or vans specially adapted for grain cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D45/00—Means or devices for securing or supporting the cargo, including protection against shocks
    • B61D45/006—Fixing by movable walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • B65D5/441—Reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • B65D5/441—Reinforcements
    • B65D5/443—Integral reinforcements, e.g. folds, flaps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • B65D65/403—Applications of laminates for particular packaging purposes with at least one corrugated layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/66—Inserted or applied tearing-strings or like flexible elements
    • B65D75/68—Inserted or applied tearing-strings or like flexible elements extending through wrapper closure or between wrapper layers
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/40—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of a number of smaller components rigidly or movably connected together, e.g. interlocking, hingedly connected of particular shape, e.g. not rectangular of variable shape or size, e.g. flexible or telescopic panels
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • E04C2002/3444—Corrugated sheets
    • E04C2002/3466—Corrugated sheets with sinusoidal corrugations

Definitions

  • This invention relates generally to closure and retaining panels, and more particularly, this invention relates to reinforced disposable paperboard panels which may be used as retaining members and closure doors for railroad box cars or trucks and the method of installing the same, a particular application being that of a railroad box car grain door.
  • This application is a continuation in-part of my application Serial No. 192,819, filed May 7, 1962, now abandoned, the present invention repre senting an improvement over that disclosed in the earlier filed case.
  • grain doors for railroad box cars were originally made of timbers nailed across the door frame opening.
  • More recently grain doors have been made of corrugated paper paneling reinforced with steel strapping, which doors were installed across the door frame opening by nailing through the ends of the steel straps into the door frame side posts.
  • the procedure of nailing through the reinforcing steel strapping into the door frame is of course necessary so that the grain load against the grain door is carried by the steel straps since it is apparent that merely nailing through the corrugated paperboard into the side posts would cause the grain door to be torn out of the door under load.
  • Grain doors made and installed in accordance with the principles of the present invention eliminate this rapid destruction of the door frame side posts, thereby eliminating the need for frequent repairs to the grain car and the out of service time. Consequently, the operating overhead associated with these factors is disposed of and substantial annual revenue savings are realized.
  • the invention contemplates a grain door fabricated of laminated paperboard including a plurality of spaced apart parallel extending non-metallic flexible reinforcing tapes bonded into the structure between laminations thereof and immediately underlying window areas cut through one of the paperboard laminations so as to 3,2i,l95 Patented Dec. 13, 1966 ice expose a length of each of the tapes at opposite ends of the grain door structure.
  • the grain doors so constructed are secured to the car door frames by means of a bonding agent in such manner that the exposed end lengths of the reinforcing tapes are strongly secured to the door frame.
  • the grain doors are provided with top and bottom flaps firmly securable to rigid members extending transversely across the car doorway to prevent bulging of the grain door at top and bottom, and hence substantially eliminate bulging altogether.
  • Another object of this invention is to provide a novel non-bulging grain door structure which may be adhesively secured to a grain car door frame in such manner that the full grain load of the car is sustainable with a high safety factor.
  • Still another object of this invention is to provide a novel tape reinforced paperboard grain door adhesively secured to the door frame of a grain car so that the weight of the grain load is borne primarily by the reinforcing tapes adhesively secured at opposite ends to the door frame side posts.
  • FIGURE 1 illustrates in plan view one side of a plurality of tape reinforced corrugated paperboard grain doors having top and bottom flaps and windows cut through one of the paper laminations to expose portions of the underlying tapes;
  • FIGURE 2 is a fragmentary perspective view of one of the grain doors of FIGURE 1 shown in a folded form for storage and transportation;
  • FIGURE 3 is an enlarged fragmentary detail of an end portion of the left hand grain door structure of FIG- URE 1 enclosed in the phantom circle with the laminated layers fragmented away to show the laminated construction of the paper layers and tapes;
  • FIGURE 4 is a cross sectional view through the structure of FIGURE 1 as would be seen when viewed along the line 4-4 of the enlarged fragmentary view of FIG- URE 3;
  • FIGURE 5 is an enlarged vertical sectional view through the installed grain door of FIGURE 7 as would be seen when viewed along the line 5-5 of FIGURE 7;
  • FIGURE 6 is a perspective view of a grain car door frame area, as viewed from the inside out, illustrating the beginning steps in the installation of the grain door structure in accordance with the novel method of the invention.
  • FIGURE 7 shows the completely installed grain door shown partially installed in FIGURE 6.
  • FIGURES 1 to 4 illustrate the structural aspects of a flexible tape reinforced paperboard grain door according to the invention.
  • the grain door is designated generally as 20 and basically consists of a corrugated paper medium or core 21 having transversely extending corrugations 22, as best seen in FIG- URE 4; a first paper facing or liner 23 the inner surface of which is glued to the troughs of the corrugations 22 of the core 21; a second paper facing or liner 24 the inner surface of which is glued to the crests of the corrugations of the corrugated core 21; and a plurality of non-metallic flexible tapes 25 sandwiched between and also adhesively secured to the corrugated core 21 and facing 24.
  • the tapes 25 may be of any desired construction and nonmetallic material having the requisite flexibility, tensile strength and lightness in weight, as for example woven or unwoven tapes of fabric or plastic.
  • a preferred form of tape is that of the -weftless type now generally available on the market, which is made by securing a plurality of high tenacity rayon tire cords together in side by side relation, the cords being bonded tog-ether by a heat-sealable composition which makes it possible to heat-seal or otherwise adhesively bond the tape to the paper of the grain door.
  • the tape is such as lends itself to secure adhesive bonding to any surface coated with contact adhesive.
  • the paper facing 24 is provided with a plurality of spaced apart windows or cut outs 26 located so as to overlie the tapes 25 at their ends.
  • the corrugated paperboard grain door 20 may be readily fabricated with well known paper combining machinery used in the production of corrugated paperboard, the modifications to such equipment that are necessary being the provision of punch apparatus for knocking out the windows in the paper facing 24 as it is fed from its supply roll, means for feeding the fabric tapes 25 into the combining machinery at the proper locations to provide for their registry with the windows 26 of the facing 24, and scoring apparatus to provide the scored fold lines 27 and 28 which divide the grain doors into three adjacent panel sections designated as 29, 30 and 31.
  • the running width of the windowed facing 24 is chosen greater than that of the core 21 and facing 23 in order to provide the flap 24a at the upper edge of the grain doors for a purpose to be subsequently described.
  • the corrugated paper core 21, the paper facings 23 and 24 and the fabric tapes 25 are all continuously fed into the combining machinery from large supply rolls and emerge as a continuous length of panelling.
  • the panelling is formed in its finished state it is scored at 27 and 28 and fed into shearing apparatus which cuts it along lines 32 into predetermined lengths of a desired size, the cut lengths emerging from the shearing apparatus as the finished grain doors 20.
  • the end windows 26 are formed by the shearing apparatus when the latter cuts centrally through the elongated openings designated as 33 so that one half of such an opening appears as the end window of one grain door 20 while the other half forms the end window of the next successively produced grain door 20.
  • Provision of the scored fold-lines 27 and 28 which subdivide the grain door 20 into the panels 29, 30 and 31 allows the finished grain door 20 to be folded about the score lines to form a compact and readily carried package as shown in FIGURE 2.
  • the utility of providing the fold-lines will be appreciated from the fact that such grain doors are generally about seven feet in overall height and nine to twelve feet in length, such size panels :being unwieldy and not readily manipulable by a single person when formed in a nonfoldable sheet of the foregoing dimensions.
  • the spacing between successively adjacently positioned tapes is not constant but is smaller in the panel 30 than in the panel 31. This is done because panel 30 is the lowermost vertical panel in the installed grain door and is subjected to the greatest loading stress, the loading stress decreasing with increasing elevation.
  • the lowermost panel 29 is a floor flap provided to insure that the grain at floor level within the grain car cannot force itself outward through the doorway beneath the grain door lower edge and also anchoring the lower edge of the grain door throughout its extent to prevent bulging.
  • FIG. 1 a fragment of the interior region of a grain car showing the car floor 34 and one wall 35 within which is formed a doorway 36 including the side posts 37.
  • the grain door 20 is installed across the doorway 36 in the following manner. First, the inside faces of the doorway side posts 37 and the edge of the floor 34 which extends across the doorway 36 are all liberally coated as at 38 with a contact adhesive. In a similar manner, the opposite ends of the grain door panels and the floor flap 29 are also coated with the contact adhesive as shown at 39, care being exercised to insure that the tapes 25 which are exposed through the end windows 26 are thoroughly coated.
  • the grain door is now positioned as shown in FIGURE 6 with the floor flap 29 placed firmly down upon the floor 34 and with the lower door panel 30 pressed vertically against the adhesively coated surface of the side posts 37.
  • the grain door is then flipped upward as shown in FIGURE 7 and the coated ends of the top panel 31 are pressed against the coated side posts.
  • the installer insures proper seating of the door edges against the side posts by applying pressure thereto with either a roller device or by tapping with a mallet.
  • the contact adhesive coatings 38 and 39 fuse together upon contact and pressure to form a homogeneous layer as indicated at 3839 in the sectional view of FIGURE 5.
  • the bottom timber 40 is pressed down upon the grain door floor flap panel 29 and against the lower panel 30 to firmly press the floor flap 29 and panel 30 respectively against the floor 34 and against wall 35 laterally of the door posts 37, the timber being secured by nails 41 as seen in FIGURES 5 and 7.
  • the top timber 42 is next disposed across the doorway 36 against the grain door at the upper edge of upper panel 31 and secured by means of nails 43 driven therethrough as seen in FIGURE 5.
  • Any suitable contact adhesive as, for example, synthetic rubber resin adhesives such as are now commercially available, may be utilized in practicing the novel method of grain door installation as hereinbefore described provided it exhibits a sufficient strength when subjected to shear, this being the type of stress set up in the adhesive bond when the grain car is loaded and the grain presses outward against the inside face of the installed grain door.
  • One such adhesive which has been found to be satisfactory in actual use is a synthetic rubber resin adhesive designated as D-22O contact adhesive marketed by the Armstrong Industrial Division of the Armstrong Cork Company.
  • the grain car When the grain car has reached its destination, it is unloaded by simply piercing the grain door panelling at a point or points below the top brace 42 to provide an opening through which the grain may discharge. Then, when the unloading has been completed the wood braces 40 and 42 are removed, following which the tapes may be severed intermediate their lengths and the remnants of the grain door peeled away from the surfaces to which it was adhesively bonded.
  • a grain door installation in a grain car for closing a door frame opening therein comprising in combination, a main panel section vertically disposed again-st and fixedly secured along its side edges to the opposite sides of the door frame, a floor flap integral with and extending substantially the full width of the main panel substantially straight thereto along the lower edge of the latter seated down upon and fixedly secured to the floor of the grain car, a rigid elongated member fixedly secured across the door frame opening to back up the grain door at the upper edge of its main panel, said main panel section and floor flap of the grain door being formed of corrugated paperboard having an inner core of corrugated paper and paper facings adhesively secured to opposite surfaces of said core, and a top flap secured to and extending upwardly beyond the upper edge of the corrugated inner core of the main panel substantially the full width of the latter as a continuati-on of one of said paper facings of the corrugated board, said top flap being turned tautly over the top of and fixedly secured to the rigid back-up member for substantially its full width
  • main panel section includes a plurality of spaced apart parallel flexible non-metallic tapes extending linearly of the grain door for the full width thereof and transversely to the corrugations of the corrugated core and being sandwiched between and bonded to said corrugated core and that one of said paper fa-cings which includes said top flap, said last mentioned paper facing being provided with windows along its marginal edges at the opposite side edges of the grain door with such windows disposed respectively in overlying registry with the end portions of the said flexible tapes to expose the latter for a distance inward from the side edges of the grain door.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Packaging Of Machine Parts And Wound Products (AREA)
US334835A 1961-08-25 1963-12-31 Tape reinforced grain door panel Expired - Lifetime US3291195A (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
BE621497D BE621497A (el) 1961-08-25
NL282120D NL282120A (el) 1961-08-25
GB27349/62A GB976157A (en) 1961-08-25 1962-07-17 Closure and retaining panels
SE8429/62A SE309791B (el) 1961-08-25 1962-07-31
FR906574A FR1338482A (fr) 1961-08-25 1962-08-09 Panneaux en papier notamment cartonné renforcés par des bandes flexibles utilisables comme moyens de fermeture et de retenue
CH1007662A CH390785A (fr) 1961-08-25 1962-08-24 Panneau
US334835A US3291195A (en) 1961-08-25 1963-12-31 Tape reinforced grain door panel
GB12174/64A GB998906A (en) 1961-08-25 1964-03-23 Tape reinforced grain door panel
FR973064A FR85674E (fr) 1961-08-25 1964-04-30 Panneaux en papier notamment cartonné renforcés par des bandes flexibles utilisables comme moyen de fermeture et de retenue
BE647465D BE647465A (el) 1961-08-25 1964-05-04
CH696764A CH413894A (fr) 1961-08-25 1964-05-28 Porte en carton
AT493264A AT252304B (de) 1963-12-31 1964-06-09 Verschlußplatte für die Türöffnung von Schüttgutwagen
NL6406544A NL6406544A (el) 1961-08-25 1964-06-10
ES301361A ES301361A2 (es) 1963-12-31 1964-06-24 Mejoras introducidas en la fabricación de paneles de retención

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US13383561A 1961-08-25 1961-08-25
US16050061A 1961-12-19 1961-12-19
US17757362A 1962-03-05 1962-03-05
US19281962A 1962-05-07 1962-05-07
US334835A US3291195A (en) 1961-08-25 1963-12-31 Tape reinforced grain door panel

Publications (1)

Publication Number Publication Date
US3291195A true US3291195A (en) 1966-12-13

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ID=27537969

Family Applications (1)

Application Number Title Priority Date Filing Date
US334835A Expired - Lifetime US3291195A (en) 1961-08-25 1963-12-31 Tape reinforced grain door panel

Country Status (6)

Country Link
US (1) US3291195A (el)
BE (2) BE647465A (el)
CH (2) CH390785A (el)
GB (2) GB976157A (el)
NL (2) NL6406544A (el)
SE (1) SE309791B (el)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3513901A (en) * 1967-09-22 1970-05-26 Maynard M Bakken Inner door for railway boxcars
US4475691A (en) * 1982-11-24 1984-10-09 South Park Corporation Fluid flow directional device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8201634A (nl) * 1982-04-20 1983-11-16 Leer Koninklijke Emballage Schot voor een laadbak voor stortgoed.
ES1077290Y (es) * 2012-06-06 2012-09-21 Saint Gobain Cristaleria S L Panel para conductos de aire

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1241146A (en) * 1915-03-24 1917-09-25 Barrett Mfg Company Process of joining sheets of composition roofing.
US1994262A (en) * 1933-06-05 1935-03-12 Winding Arthur Method of laying roofing sheets
US2739635A (en) * 1952-12-15 1956-03-27 Signode Steel Strapping Co Method of and apparatus for manufacturing load retaining doors
US2794761A (en) * 1955-10-18 1957-06-04 Int Paper Co Composite structural panel and method of making same
US2797749A (en) * 1955-05-11 1957-07-02 Barton H Ford Boxcar opening closure
US2966214A (en) * 1959-05-04 1960-12-27 Int Paper Co Retainer panel and method of forming
US2966213A (en) * 1956-02-29 1960-12-27 Int Paper Co Grain door and method of forming same
US3025908A (en) * 1958-12-08 1962-03-20 Int Paper Co Temporary car door
US3094447A (en) * 1960-11-14 1963-06-18 Koppers Co Inc Method of making an insulated roof
US3099314A (en) * 1961-06-20 1963-07-30 American Viscose Corp Closure for car doors and the like
US3156604A (en) * 1961-10-23 1964-11-10 Walnut Ind Inc Reinforced closure and retainer panels

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1241146A (en) * 1915-03-24 1917-09-25 Barrett Mfg Company Process of joining sheets of composition roofing.
US1994262A (en) * 1933-06-05 1935-03-12 Winding Arthur Method of laying roofing sheets
US2739635A (en) * 1952-12-15 1956-03-27 Signode Steel Strapping Co Method of and apparatus for manufacturing load retaining doors
US2797749A (en) * 1955-05-11 1957-07-02 Barton H Ford Boxcar opening closure
US2794761A (en) * 1955-10-18 1957-06-04 Int Paper Co Composite structural panel and method of making same
US2966213A (en) * 1956-02-29 1960-12-27 Int Paper Co Grain door and method of forming same
US3025908A (en) * 1958-12-08 1962-03-20 Int Paper Co Temporary car door
US2966214A (en) * 1959-05-04 1960-12-27 Int Paper Co Retainer panel and method of forming
US3094447A (en) * 1960-11-14 1963-06-18 Koppers Co Inc Method of making an insulated roof
US3099314A (en) * 1961-06-20 1963-07-30 American Viscose Corp Closure for car doors and the like
US3156604A (en) * 1961-10-23 1964-11-10 Walnut Ind Inc Reinforced closure and retainer panels

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3513901A (en) * 1967-09-22 1970-05-26 Maynard M Bakken Inner door for railway boxcars
US4475691A (en) * 1982-11-24 1984-10-09 South Park Corporation Fluid flow directional device

Also Published As

Publication number Publication date
GB998906A (en) 1965-07-21
CH390785A (fr) 1965-04-15
NL6406544A (el) 1965-07-02
BE621497A (el)
NL282120A (el)
GB976157A (en) 1964-11-25
CH413894A (fr) 1966-05-31
BE647465A (el) 1964-08-31
SE309791B (el) 1969-04-08

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