Roof step system

A step system for providing a toehold/slide guard on inclined surfaces, such as a roof is disclosed. Individual steps including a toehold are connected at variable distances by flexible material permitting the steps to be spaced sufficiently far apart to allow an adult to kneel between neighboring steps. In preferred embodiments of the step system, individual steps include molded cutout handles, reenforced grommets for passage of fasteners, and non-skid surfaces for additional safety when the step system is employed in steeply pitched planes.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings wherein like reference numerals designate identical or corresponding parts throughout the several views, a perspective view of a roof step system 100 installed on the roof 10 of a building 20 is shown in FIG. 1 . A worker 30 is using the roof step system 100 to install shingles 12 . As shown in FIG. 1 , the roof step system 100 extends over the peak of the roof 10 . The roof step system may be attached to the other side of the roof before the shingles are attached to that side, or may extend entirely over the other side of the roof and be attached at a place on the house, thereby avoiding the necessity of creating holes in the roof 10 sheathing. The spacing between successive steps 130 on the roof system 100 allows the worker 30 to kneel between successive steps 130 . The step system 100 also protects installed shingles 12 from being scuffed and dirtied by the worker's feet. FIG. 2 is a bottom view of the roof step system 100 . FIG. 2 illustrates the connecting material 110 . The connecting material 110 may be any material that is sufficiently strong to connect the step. In preferred embodiments, the material 110 is solid, or closed (as used herein, a solid or closed material is a material of a sufficiently dense weave such that dirt and other debris is prevented from passing through the material 110 ). However, other types of material may also be used. These other types of material may include open nets or meshes. It is also possible to use two thin strips of material spaced apart such that the strips of material are attached to opposite ends of a step 100 . In a highly preferred embodiment of the present invention, the connecting material is made from a heavy gauge (900 to 1,000 denier) nylon pack cloth. This material has been found to exhibit excellent traction on commonly used asphalt roof shingles. As can be seen with reference to FIG. 3 , in an even more highly preferred embodiment of the invention, the fabric 110 is reenforced by thin nylon strips 120 , comprised of a 2 inch wide 6000 lb. break strength nylon/seat belt webbing for added strength. Still referring to FIG. 3, a distance D separates the toehold 134 of one step 130 from the start of a successive step 130 . The distance D is chosen to allow a worker to kneel between successive steps 130 . Preferably, the distance D is between approximately 20 inches and approximately 36 inches. Referring now to FIG. 4 , it can be seen that the reenforcing strips 120 include grommets 140 . The grommets are used to secure the step system 100 to a nail, screw, or other object. Experience has shown that in many situations, a single grommet 140 on each side of the top of the step system 100 is sufficient to secure the step system 100 . This is partially due to the excellent traction provided by the connecting material 110 . However, a plurality of grommets 140 are provided to allow multiple screws or nails to be used to secure the step system 100 to the roof for the sake of safety; especially when the step system 100 is used on an uncovered plywood roof. The multiple grommets 140 also allow the roof step system 100 to be attached to a roof at a number of different points. The step 130 is attached to the connecting material 110 by 6000 pounds of nylon seat belt webbing 120 . In the embodiment shown in FIG. 4 , two slots 138 per side are used to attach the step 130 to the connecting material 110 through the reenforcing strip 120 . Any number of fasteners other than nylon seat belt webbing 138 could be used to secure the step 130 to the connecting material 110 , but nylon seat belt webbing is preferred because the nylon webbing 120 has low profile on the opposite side of the material 110 . The step 130 includes a base 132 having a width W. The width W is chosen to prevent the step 130 from tipping over when used as a toehold/slide guard. In preferred embodiments, the width W is approximately 8 inches. The width W of the connecting material is approximately 10 inches to approximately 30 inches wide. More preferably still, the step 134 may be comprised of an textured plastic, which has been shown to provide surprisingly good traction, especially when sneakers are worn. Referring now to FIG. 5 , it can be seen that the step 130 includes a toehold 134 of a height H. In preferred embodiments, the height H is equal to approximately 4 inches. Greater heights H are also possible, but the use of greater heights would require an increase in the width W of the base 132 of the step 130 . Also shown in FIG. 5 is a handle 136 , which is formed by removing portions of the toehold 134 . The handle 136 provides a convenient surface for a worker to grab. The handle 136 may also be used to provide a point at which a life line could be attached to the step system 100 . Such a life line is intended to be a short, e.g., 6 foot, life line. A short life line such as this prevents the step system 100 from being exposed to excessive force in the event that a worker should lose his footing. Another advantage of a short life line is convenience of use. The step 130 is preferably comprised of a high strength, light weight plastic. Of course, other materials could also be used. For example, steps comprised of aluminum, steel and/or vulcanized rubber are also possible. It should also be noted that it is possible to use the solid nylon seat belt webbing 6000 pounds connecting material 110 without steps 130 . Used in this manner, the connecting material 110 provides good traction while keeping the roof 10 clean. As shown in FIGS. 5 and 6 , the toehold 134 is solid other than the cutout for the handle 136 . One advantage to this arrangement is that the toehold 134 can be used by a worker 30 as a tool rest as shown in FIG. 1 . Further as shown in FIG. 7 , in a preferred embodiment of the step 130 , the base 132 includes keyhole-shaped sleeves 142 that are designed to permit passage of a nail, screw, or other fastener (not shown), in order to secure the step 130 to the roof surface. The keyhole shape allows the step 130 to be removed from the fastener without having to remove and reinstall the fastener, or without having to remove the fastener and patch or repair the hole left by the removed fastener. Furthermore, the keyhole-shaped sleeve 142 permits step 130 when installed to be anchored in place by sliding the step 130 so that the fastener passes through the narrow portion of keyhole-shaped sleeve 142 . In the example shown in FIG. 7 , it is anticipated that 1.5 inch &num;10 Phillips head screws will be used, and upon removal of the step 130 , the screws are simply countersunk into the roofing material to maintain an impervious surface. A further advantage to the preferred embodiment shown in FIG. 7 is that individual roof steps may be placed in irregular patterns as conditions require. As shown in FIG. 7 A, at the discretion of the user, connecting material 110 may be used between individually placed steps 130 . FIG. 8 displays another preferred embodiment of the step 130 , wherein the step is especially suitable for use on vertical or steeply pitched planes. In the preferred embodiment shown in FIG. 8 , toehold 134 has non-skid surface 144 which permits the user to maintain stable footing while working on the vertical or steeply pitched plane. In the preferred embodiment shown in FIG. 8 , the non-skid surface 144 is provided through a pattern of molded knurls, but the non-skid surface can also be provided through the use of applique, sand paint, or other techniques familiar to persons of ordinary skill in the art. Keyhole-shaped sleeves 142 are preferably placed relatively close to toehold 134 , to minimize the stress on the fasteners (not shown) that are used to attach step 130 to the roof or steeply pitched plane. Turning to FIG. 9, a further preferred embodiment of the step 130 is shown, wherein the overall length of the step is increased, to permit extensive lateral movement by the user. The preferred embodiment shown includes multiple keyhole-shaped sleeves 142 , preferably placed at construction industry-relevant standardized intervals such as 16 inches and 24 inches. The embodiment depicted in FIG. 9 further includes non-skid surface 144 , and one edge of step 130 includes ruler demarcations 146 to indicate length from any point along step 130 . Multiple cutouts for handholds 136 permit one or more users conveniently and safely to carry the preferred embodiment shown. As shown in FIG. 9 , it is anticipated that the preferred embodiment of the step will be formed from 14 gauge cold-rolled or cold-drawn steel, but any material of sufficient strength, resilience, resistance to corrosion and other desirable properties, which will be obvious to those of ordinary skill in the relevant art, may be used. While the invention has been described in detail in connection with the preferred embodiments known at this time, it should be readily understood that the invention is not limited to such disclosed embodiments. Rather, the invention can be modified to incorporate any number of variations, alterations, substitutions or equivalent arrangements not heretofore described but which are commensurate with the spirit and scope of the invention. Accordingly, the invention is not to be seen as limited by the foregoing description, but is only limited by the scope of the appended claims.