US20050211501A1
2005-09-29
10/800,246
2004-03-15
A safety device system is installed on top of a ladder that is mounted on a top of the roof of an upstanding structure and somewhat inwardly from an edge of the roof. The safety device includes a U-shaped frame being fastened with each leg to each of the rails of the ladder. The height of U-shaped frame can be adjusted by way of telescoping sleeves. The U-shaped frame with each of its legs is frictionally mounted to each rail so that the U-shaped frame can be adjusted into different positions relative to the roof. The upstanding structure can be an RV or camping vehicle having the roof.
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E06C5/02 » CPC main
Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
B60R3/005 » CPC further
Arrangements of steps or ladders facilitating access to or on the vehicle , e.g. running-boards Catwalks, running boards for vehicle tops, access means for vehicle tops; Handrails therefor
E06C7/182 » CPC further
Component parts, supporting parts, or accessories; Devices for preventing persons from falling; Additional gripping devices, e.g. handrails situated at the top of the ladder
(None)
STATEMENT REGARDING FED SPONSORED R & D(None)
BACKGROUND OF THE INVENTIONA ladder structure to be used on recreational vehicles such as campers or RV's to gain access to the roof of such vehicles. The ladders are normally permanently installed and are normally located at a rear wall of the vehicle. There are not known any implements with regard to safety of a person climbing the ladder, especially when reaching the top of the ladder, To aid the person in stepping on top of the roof with regard to safety.
BRIEF DESCRIPTION OF THE DRAWINGSFIG. 1 is a perspective view of the ladder including the safety grip;
FIG. 2 is a back view of the ladder including the manner of installing the safety grip.
DETAILED DESCRIPTION OF THE INVENTIONFIG. 1 illustrates the known system of installing a ladder on top of an RV or a camper. The roof is indicated at 1. This ladder system, of course, could also be installed on any other upstanding structure having a flat roof such as a garage standing alone. The ladder is indicated at 2 and is normally fastened to the roof by a fastening system shown at 3: The ladder is also normally installed in such a manner that at least two railings follow the roof surface to some extent to allow for an extra step onto the roof for a person reaching the top of the roof. The above description is well known in the prior art.
At this point, when the person reaches the top of the roof, there is not known any safety feature to stabilize the person. To this end there is installed a safety hand grip 4 which in FIG. 1 is shown as upstanding.
FIG. 2 shows the details of the hand grip and an explanation of its operation. The hand grip 4 is installed in a telescoping sleeve 5 so that different heights of the hand grip can be obtained. The hand grip 4 is constructed in a U-shape form so that each leg 6 of the U-shape can be fastened to each of the ladder rails. Once a proper height of the U-shaped hand grip has been established, a clamping screw 8 will fasten each leg of U-shape in a respective telescoping sleeve by way of the clamping screw 8. The U-shaped frame or hand grip 4 is not rigidly mounted to the top of the ladder but can be adjusted to different positions. This is accomplished by way of a friction fit. There is a clamping connection 9 attached to the ladder and a clamping screw 7 passes through the clamping connection and the U-shaped frame. By tightening the screw 7 more or less to a certain force, the U-shaped frame 4 can by be moved to and held in certain positions. When the ladder is not in use, the U-shaped frame should be moved to a complete down position When not in use and the vehicle is traveling, it is desirable to have the frame 4 in a down position to remove the frame from any wind resistance and for aesthetic reasons. Being clamped in any position the U-shaped frame 4 cannot rattle as the vehicle moves. When a person climbs up the ladder, the person immediately can reach the U-shaped frame 4 and slowly can move the frame against the friction of the friction connection 9 to thereby immediately can take advantage of the safety feature as the person rises to the top of roof.
1. A safety device system installed on top of a ladder, said safety device is to be used by a person using said ladder, said top of the ladder being installed on a roof of an upstanding structure and a location somewhat inwardly from an edge of said roof, said safety device comprising a u-shaped frame, each leg of said u-shaped frame being mounted to each rail of the ladder on top of said roof, means for creating a friction between each leg of said u-shaped frame and each rail of said ladder, said u-shaped frame remains movable against said friction.
2. The safety device system of claim 1, wherein said means for creating friction includes a clamping connection on each rail of said ladder and a clamping screw passing through each leg of said U-shaped frame and said clamping connection.
3. The safety device system of claim 1 including means for adjusting the height of said U-shaped frame relative to a top of said ladder.
4. The safety device system of claim 3, wherein said means for adjusting the height of said U-shaped frame includes a telescoping sleeve each fastened to said means for creating friction, each leg of said U-shaped frame being received within each of said telescoping sleeves.
5. The safety device system of claim 4, including a screw passing through each of said telescoping sleeves to arrest said U-shaped frame at a predetermined height.