US 3693693 A
Description (OCR text may contain errors)
United States Patent Court  VERTICALLY SLIDING DOOR MOUNT- ED IN HORIZONTALLY PIVOTED FRAME  Inventor: Charles T. Court, P.O. Box 1921,
Texarkana, Tex. 75501 Dec. 11, 1970 I  Filed:
 Appl. No.:97,21l
 U.S. Cl Toll/125 291226/5 l [5,1] Int. Cl ..E05d 15/22  Field ofSearch ..160/40, 201, 194, 125;
 References Cited UNITED STATES PATENTS 3 544,15 3 1970 fii ififllsti laaaaa111. 3,104319 31129; Kappen. ..160l20l X 22. .15]; 4 1L afi1 52 I [151 3,693,693 3 EBLZEZL9ZZ 6/1943 Black ..l60/l95 9/1964 Adler. ..160/20lX abaama PATENTS 0k APPLiCATlOhiS 614,566 2/1961 Canada ..l60/209 Primary Examiner-J. Karl Bell Attorney-A. Yates Dowell; A. Yates Dowell, Jr.
 ABSTRACT An assembly of articulated panels is slidably mounted in tracks on a door frame which interconnect with overhead tracks in an enclosure, the door frame tracks being separable from the overhead tracks and the frame being hinged in a doorway for horizontal opening of the frame when the panels are I closed. Latch means is provided which prevent opening movement of the frame except when the panels are completely closed.
3 Claims, 10 Drawing Figures PATENTEDsEm I972 SHEEI 1 BF 3 FIG. 2
M. 7 CHARLES T. COURT 1N VENTOR mmninsms m2 3.691693 SHEET 2 BF 3 INVENTOR CHARLES T. COURT P'A'TENIED E I 1 I 3.693.693
' SHEET 3 BF 3 FIG. 5
V 7' INVENTOR CHARLES T. COURT VERTICALLY SLIDING DOOR MOUNTED IN HORIZONTALLY PIVOTED FRAME BACKGROUND OF THE INVENTION tages including that cargo may become displaced and engage the door making it difficult or impossible o. ra the same-j teti ,thgqqorsh g covered with ice and snow, they cannot be raised when they reach their destination except by thawing, which frequently results in substantial delays.
On present day roll-up doors, when difficulty is encountered in raising them due to conditions such as those mentioned, the practice is to employ a pry bar or a fork lift truck to raise the door. Not only are such procedures time consuming and costly, but are likely to misalign and damage the door, requiring repairs before the vehicle can be used.
An inherent disadvantage accompanying roll-up doors is that due to the necessity for the roller mounting at the sides, the width of the doorway is less than that of the enclosure. In some situations this may prevent, or cause difficulty in, the hauling of merchandise which the vehicle would otherwise be able to accommodate.
A further disadvantage of ordinary roll-up doors is that these are usually shipped to the equipment manufacturer only partially assembled and require substantial time to complete the assembly and install.
SUMMARY OF THE INVENTION The present invention is a two-way door assembly for an enclosure such as a truck body and includes a door frame swingably connected along one side of the opening to the enclosure, and such door frame is provided with a plurality of hinged panels carried' within tracks on the door frame. The tracks on the door frame are in alignment with tracks within the enclosure so that when the door;frarnegis. closed the Eneis' can be moved upwardly from a generally OBJECTS OF THE INVENTION Accordingly, it is an object of the invention to provide a door and door frame assembly in which the door includes a plurality of hingedly connected panels adapted for sliding roll-up operation or the slidable roll-up door which can be operated outwardly on hinges in order to permit the door to be opened when the roll-up door is jammed, and to permit the full use of the width and height of the enclosure.
A further object is the provision of a door for slidable or hinged operation which is relatively simple to install and adapted for use on any standard vehicle frame.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective of one end of a truck illustrating a two-way door fully closed in full lines, and the door fully swung open in phantom lines.
F IG. 2 is a perspective similar to FIG. 1 illustrating the door panels partially raised.
FIG. 3 is an enlarged fragmentary section on the line 3-3 of FIG. 1 illustrating the track on which the door panels operate.
FIG. 4 is an enlarged fragmentary section on the line 4-4 of FIG. 3 and illustrates the relationship between the fixed frame of the vehicle and the swinging frame of the door, as well as the relationship between the swinging frame and the roll-up door panels.
FIG. 5 is an enlarged detailed section of the door frame safety lock in locked position.
FIG. 6 is a section similar to FIG. 5 with the door panels in fully lowered position and with the safety lock unlatched.
Fig. 7 is a section on the line 7-7 of FIG. 5 illustrating the lowermost door panel abutting the safety lock just prior to moving the same to unlatching position.
FIG. 8 is an enlarged section on the line 8-8 of FIG. 1 illustrating a panel joint and one of the roller hinge members.
FIG. 9 is a top plan view of one of the roller I supporting hinge members.
FIG. 10 is an enlarged fragmentary plan view of the frame lock mechanism.
DESCRIPTION OF THE PREFERRED EMBODIMENT With further reference to the drawings, the invention is illustrated as applied to a vehicle body or trailer T having top and bottom walls W1 and W2 and left and right side walls W3 and Wfi yvhi h balance spring is mounted. Such spring is connected to a reel 17 with lines 18 extending therefrom.
In order to seal the frame against leakage between it and the sides of the vehicle, a gasket 20 is provided having a portion 21 which engages the corner of the fragrq yvhen it is closed and the inside wall of the enclosure as indicated in FIG. 4. The gasket 20 also is closed on the hinges these two rounded portions may engage and cooperate if necessary to align the door.
In order to hold the frame in closed position, a latching means 40 is provided at the right side which includes a vertical bar 41 having horizontal extensions 42 at its ends, the bar mounted by loops 43 on the frame which permits shifting of the bar so that its outer ends may be locked to engage under flanges or lips 45 mounted on the frame of the en-,
In order to mount the slidable door on the frame, left and right roller trackways 50 having inwardly inclined upper portions 51 are mounted by brackets 52 which are connected to the left and right frame members 11 and 12.
The slidable door includes a plurality of interconnected panels 60. The panels are connected together by hinge members 61 which may be of the type indicated in FIG. 9 having leaves 62 and 63 connected to adjacent panels and to each other by a hinge pin 64. As illustrated in FIGS. 4, 8 and}, each of the hinges 61 adjacent to the ends of the panels 60, includes a pair of upstanding tangs 65 terminating in bearings 66 in which a shaft 67 is rotatably mounted.
A roller 68 is mounted on one end of the shaft 67 and is held in spaced relation to the bearings 66 by a spacer 69. The rollers 68 are received within the trackways 50 and are adapted to guide the door whent gsdqot nee le. mit ati 2m Mounted within the enclosure are horizontallyextending channel track members 80 having downwardly inclined end portions 81 which, when the door is in closed position, are aligned with the inwardly inclined end portions 51 of the track members 50 on the door frame. In order to facilitate alignment of these end portions when the door is being closed on its hinges, a bracket 84 is provided having a lower guide plate 85 and an upper guide plate 86 with a diverging lip 87 which guides the portion 51 of the track into position.
When the panels are in completely closed position, as indicated in FIG. 1, they may be held by latch means 90 which includes a handle portion 91 and a locking portion 92 mounted on pivot 93 and which engages a keeper 94 in the sill of the frame.
A handle 96 is provided on the lower panel to assist in raising and lowering the panels and a handle 97 is provided on the right frame to assist in opening and closing the door on the hinges.
JLEJEEEFQ?! thatn effort hqglibs madamopen the door on the hinges unless the panels are in the completely closed position, otherwise damage to the trackway and the panels is likely to occur. In order to prevent inadvertent movement of the frame about the hinge when the panels are not completely closed, an automatic safety interlock is provided as indicated in FIGS. 57. The interlock has an operating member or bell crank lever 100 which has an arm with a roller 101 that extends above the jamb l4 and is positioned for engagement by the lowermost panel when the latter is closed against the jamb. The lever has a pivot 102 and an operating leg 103. The leg 103 engages an abutment 104 mounted on a rod 105 which is slidable in apertures in spaced blocks 106, 107 in the jamb and engageable with an aperture in block 108 in the side of the vehicle. Spring 110 is coiled about the shaft intermediate the blocks 106 and 104 and urges the shaft 105 towards closed position as indicated in FIG. 5. When the slidable door is in raised position, therefore, the lock will be in the position of FIG. 5 thereby preventing any movement of the frame about the hinges 30. When the slidable door is closed, however, engagement of the lowermost panel moves the lever 100 to the position of FIG. 6 in which leg 103 shifts the shaft to the left in order to retract it from the block 108 in the vehicle frame, thereby freeing the frame.
In the operation of the device, when the trailer is in use, the articulated panels 60 are locked to the frame 10 by the latch means and the frame 10 is locked to the side wall W4 by the latch mechanism 40.
When it is desired to open the rear door of the trailer by raising the articulated panels 60, the latch mechanism 90 is operated to release the locking portion 92 from the keeper 94 after which an upward force can be applied to the handle 96 so that the rollers 68 will move upwardly within the tracks 50 and .lhl'fl il i imttu 51 and 81 -QIJLQJBE.
generally horizontal track 80 within the truck body.
As soon as the articulated panels are moved upwardly a short distance, the spring 110 will cause the rod 105 to be extended into the orifice within the block 1.08-59 thatthsttamssa notb m veden th articulated panels are fully raised, the space defined by the frame 10 will be open so that the cargo can be placed in or removed from the trailer. After the loading or unloading has been completed, the articulated panels are moved downwardly through the tracks toward closed position. As the panels approach the sill 14, the lowermost panel will engage the roller 101 and pivot the bell crank lever about the pivot 102 and cause the rod to be retracted from the block 108. Thereafter the latch mechanism 0 s, er t dlolqqk .t e a q hs fram In the event that a larger opening is required, or if the cargo has shifted so that portions of the cargo are in engagement with the articulated panels and prevent ready movement thereof, the latch mechanism 40 can be operated to unlock the frame from the wall structure of the trailer, after which the frame with the articulated panels thereon can be swung about the hinge pins 26 through approximately 270 of rotation until the door is substantially abutting the side of the trailer, as illustrated in phantom in FIG. 1. After the loading or unloading has been completed, the door is swung to closed position and the latch mechanism i p r 7 9 995.!!!2.@9r.. 2!929l. l claim:
1. A two-way door assembly for mounting on wall structure defining an enclosure with an opening therein, said assembly comprising a frame, hinge means mounting said frame on said wall structure adjacent to the opening, first track means having a lower portion mounted generally vertically on opposite sides of said frame, the upper portion of said first track means being disposed out of the plane of said lower portion, second track means mounted generally horizontally on said wall structure in alignment with the upper portion of said first track means, a plurality of articulated panels hingedly connected together, roller means carried by said panels and engageable with said first and second track means, first lock means for locking said panels to said frame, second lock means for locking said frame to said wall structure, third lock means operable by said panels for automatically locking said frame to said wall structure when the panels are in a raised position and for unlocking said frame from said wall structure when the panels are in a loweredposition, and means for sealing said panels to said frame when said panels are in a lowered position, whereby said door frame can swing about said hinge means hen. Said s nd nt h r 9 5.lEqilllifliElfisb and said panels can be moved along said track means when the first lock means is released.
2. In a two-way door assembly for mounting on wall structure defining an enclosure with an opening therein, said door assembly including a frame hingedly mounted on said wall structure adjacent to the opening, first track means carried by said frame, second track means located within said enclosure, a plurality of articulated panels cam'ed by said first track means and which can be selectively moved to said second track means when said tracks are adjacent to each other; the improvement comprising lock means carried by said frame to prevent swinging movement of said frame about its hinges when said articulated panels are raised, said lock means comprising latch means slidably carried by said frame,
means urging said latch means outwardly of said frame and into locking engagement with said wall structure, operating means engageable by said panels for retracting said latch means out of engagement with said wall structure when said panels are entirely within said first track means.
3. The structure of claim 2 in which said operating means includes lever means swingably mounted on