Truck door locking system

• US 4,669,767 A
• Filed: 03/13/1986
• Issued: 06/02/1987
• Est. Priority Date: 03/13/1986
• Status: Expired due to Fees

• Current Assignee: Paul Leto
• Original Assignee: Paul Leto
• Inventors: Leto, Paul
• Primary Examiner(s): Smith, Gary L.
• Assistant Examiner(s): Gall, Lloyd A.
• Application Number:
  US06/839,104
• Time in Patent Office: 446 Days
• Field of Search: 292/259 R, 292/DIG. 38, 292/150, 292/148, 292/289, 292/292, 70/94, 70/158-162, 70/423, 70/425, 70/427, 70/428, 70/DIG. 63, 70/DIG. 64, 70/DIG. 65, 49/394, 49/395, 49/37, 49/56, 49/57, 211/4, 312/216, 312/217, 312/219, 296/50, 296/146, 180/289, 280/152 A
• US Class Current: 292/259.00R
• CPC Class Codes: E05B 83/12 for back doors of vans E05B83/04, E05B83/08 take precedence
• CPC Class Codes: E05C 19/003 Locking bars, cross bars, security bars for sliding wings E05B65/0888; for a plurality of drawers E05B65/467
• CPC Class Codes: Y10S 70/63 Multiple locks
• CPC Class Codes: Y10S 70/64 Door spanning bolt
• CPC Class Codes: Y10S 70/65 Double door lock
• CPC Class Codes: Y10T 292/23 Cross bars
• CPC Class Codes: Y10T 292/379 Sliding holding member
• CPC Class Codes: Y10T 70/5168 Braces

Abstract

In association with a conventional truck box, trailer or enclosure having a rear door communicating with the sides, top and bottom of the enclosure, a hollow holding sleeve is secured to the inside of the door with a securing plate fastened to one side of the enclosure and a locking plate to the other side. The plates include apertures which are aligned with the hollow holding sleeve and the locking plate communicates with the exterior of the enclosure. A locking bar extends through the aperture of the locking plate and the hollow holding sleeve and into the aperture of the securing plate. A locking device is mounted onto the locking plate to securely hold the locking bar in place. When the locking bar is in place, movement of the door is prohibited and the door can not be opened.

Claims

1. In a truck door locking system for the securing of a truck trailer or truck box enclosure door in a closed position, the door located at the rear of the trailer in a closed position and communicating with the sides, top and bottom of the trailer and movable between an open and closed position, the improvement comprising:

an elongated hollow holding sleeve secured to the inside of the door and extending lengthwise across the width of the door;

a locking plate and securing plate, the securing plate secured to one side of the trailer and the locking plate secured to the opposite side of the trailer, each plate including an aperture with said apertures being aligned with the sleeve with the aperture of the locking plate further communicating with the exterior of the trailer side through a cut out portion therein;

a locking bar, the bar having a cross-sectional area throughout its length which is less than the cross-sectional area of the holding sleeve and the apertures of the locking and securing plates and a portion thereof generally being inserted through the aperture of the locking plate, hollow holding sleeve and the aperture of the securing plate thereby preventing movement of the hollow holding sleeve when the locking bar is extending therethrough;

a locking means, said locking means attached to the locking plate for selectively securing the locking bar within the locking plate;

brackets, the brackets partially conforming to the shape of the hollow holding sleeve and secured to the inside of the trailer door with the hollow holding sleeve passing between the brackets and door and held securely against the door;

an alignment surface, the alignment surface circumferentially spaced about the aperture on the securing plate for permitting the locking bar to align with the aperture therein.

2. In a truck door locking system for the securing of a truck door in a closed position, the truck door including a pair of doors in a closed position and communicating with the sides, top and bottom of an enclosure and being generally movable between an open and closed position, the improvement comprising:

an elongated hollow holding sleeve secured to the inside of each door and extending lengthwise across the width of each door and in the same longitudinal axis;

a locking plate and securing plate, the securing plate secured to one side of the enclosure and the locking plate secured to the opposite side of the enclosure, each plate including an aperture with the apertures being aligned with the adjacent holding sleeve and the aperture of the locking plate further communicating with the exterior of the enclosure side through a cut out portion therein;

a locking bar, the bar having a cross-sectional area throughout its length which is less than the cross-sectional area of the holding sleeve and the aperture of the locking and securing plates and a portion thereof generally being inserted through the aperture of the locking plate, holding sleeves and the aperture of the securing plate thereby preventing movement of the holding sleeves when the locking bar is extending therethrough;

a locking means, said locking means attached to the locking plate for selectively securing the locking bar within the locking plate;

brackets, the brackets partially conforming to the shape of the hollow holding sleeve and secured to the inside of the trailer door with the hollow holding sleeve passing between the brackets and door and held securely against the door;

an alignment surface, the alignment surface circumferentially spaced about the aperture on the securing plate for permitting the locking bar to align with the aperture therein.