ADJUSTABLE PLATFORM FOR USE ON ROOF
An adjustable roof platform which comprises a work platform having first and second ends and opposed top and bottom surfaces. A pair of first and second spaced apart support legs each having a first end and a second end and opposed top and bottom surfaces. The first end of the work platform is pivotally connected with the first ends of the support legs and the bottom surfaces of each support legs carries a replaceable foam layer. At least one member connects the first and the second support legs with one another and at least one adjustable arm adjustably connects the second end of the work platform to the support legs so that an angle, formed between the work platform and the first and second support legs, can be varied between about 0 degrees and about 45 degrees.
The present invention relates to an adjustable roof platform which facilitates building, repairing, replacement, painting and other construction and/or maintenance on roofs of different pitches in a safe and convenient manner.
BACKGROUND OF THE INVENTIONAs is well known in the art, a variety of different devices and apparatuses, such as staging, support structures, or roofing apparatuses, which facilitate building, repairing, replacement, painting and other construction and/or maintenance on roofs are conventionally used by roofers, masons, painters, contractors and the like. However, many presently known staging, support structures and/or roofing apparatuses are generally time consuming to install and/or assemble, typically require the use of nails or the like to secure the same to the roof, and thus are not easily transportable or movable to another location, on the roof, which facilitates use at virtually any desired location on a roof while still providing a safe, level support and work platform which is large enough in size so as to facilitate the desired building, repairing, replacement, painting and other construction and/or maintenance on roofs while still accommodating tools, supplies, items and other associated project equipment.
SUMMARY OF THE INVENTIONWherefore, it is an object of the present invention to overcome the above mentioned shortcomings and drawbacks associated with the prior art staging, support structures and roofing apparatuses.
Another object of the present invention is to provide an adjustable roof platform that can be repeatedly used on a roof for an extended period of time without damaging the shingles, cedar shakes, tiles or other exterior surface of the roof.
A further object of the present invention is to provide an adjustable roof platform that is easily installed and assembled on a roof so as to avoid extended setup-time prior to performing the desired building, repairing, replacement, painting and other construction and/or maintenance project on the roof as well as extended removal time after performing the desired project.
Yet another object of the present invention is to provide an adjustable roof platform that is both lightweight and ergonomically designed so a user may easily transport, move, reposition and/or relocate the adjustable roof support to virtually any desired location on a roof to preform the desired building, repair, replacement, painting and other construction and/or maintenance.
A still further object of the present invention is to provide an adjustable roof platform that is readily adjustable so that the work platform can be adjusted to generally level orientation, e.g., generally parallel to the surface of the ground, while also providing a work platform which is sufficiently large enough in size so as to facilitate the desired building, repairing, replacement, painting and other construction and/or maintenance project on the roof.
The present invention relates to an adjustable roof platform comprising: a work platform having first and second ends and opposed top and bottom surfaces; a base having a first end and a second and opposed top and bottom surfaces, the first end of the work platform being pivotally connected to the first end of the base and the bottom surface of the base having a foam layer; and at least one adjustable arm for adjustably connecting the second end of the work platform to the base.
The present invention further relates to an adjustable roof platform comprising: a work platform having first and second ends and opposed top and bottom surfaces; first and second spaced apart support legs each having a first end and a second end and opposed top and bottom surfaces, the first end of the work platform being pivotally connected to the first ends of the support legs and the bottom surfaces of each support legs having a foam layer; at least one member connecting the first and the second support legs with one another; and at least one adjustable arm for adjustably connecting the second end of the work platform to the support legs.
When in use, the adjustable roof platform forms an angle α, between the work platform and the base, and the angle α can vary depending upon the pitch of the roof where the project is to be undertaken. The angle α is dependent on the selected position of the adjustable arms, relative to the base, such that, when the adjustable roof platform is placed on a roof, the adjustable arms are positioned so the work platform is secured in a position substantially horizontal, relative to the ground, in order to provide a safe and secure working support.
The invention will now be described, by way of example, with reference to the accompanying drawings in which:
As generally shown in
With reference now to
The top surface 6 of the work platform 4 generally includes an anti-slip coating, material or layer 8 disposed substantially over the entire top surface 6 thereof. The an anti-slip coating, material or layer 8 is typically adhered or otherwise affixed to the top surface 6 of the work platform 4 by an adhesive or in some other conventional manner. An important feature of the an anti-slip coating, material or layer 8 is that at least the top exposed surface of the anti-slip coating, material or layer 8 contains a constituent, component or feature having a high coefficient of friction so that such constituent, component or feature, of the anti-slip coating, material or layer 8, minimizes or eliminates the risk of slippage by the user during use of the adjustable roof platform unit 2.
A pair of platform hinges 12, arranged spaced apart and substantially parallel to one another, are supported by a bottom surface 10 of the work platform 4. As diagrammatically shown in
As shown in
An optional storage pouch 24, as shown in
The adjustable roof platform unit 2 further includes a pair of spaced apart adjustable arms 26, 28, one of which is shown in
The adjustable roof platform unit 2 further includes a pair of spaced apart support legs 36, 38 which will now be described with reference to
The support legs 36, 38 extend substantially parallel to one another and have a length of between about 24 to about 72 inches, preferably have a length of approximately 40 inches. Each of the support leg 36, 38 preferably has a width of between about 1 and about 8 inches, preferably has a width of about 2 inches, and has a thickness of between about ¼ and about 3 inches, preferably has a thickness of about 2 inches. As best shown in
A hinge aperture 46 extends completely through both opposed side walls of the generally “U-shaped” configuration of the support legs 36, 38 adjacent the first end 40 of each of the support legs 36, 38. The size of the hinge aperture 46 is substantially the same size of the platform hinge opening 22 provide adjacent the first end 18 of each of the platform hinges 12. A respective first connector pin 56 passes through the hinge aperture 46, in the first side wall of one of the support legs 36 or 38, the platform hinge opening 22 formed in the platform hinge 12, and then the hinge aperture 46, in the other side wall of the support leg 36 or 38, so as to pivotally connect those two components with one another while facilitating relative pivoting movement between the work platform 4 and the support legs 36, 38 or base.
Additionally, as shown in
A foam material 52 is applied to and disposed substantially over an entire bottom surface 50 of each one of the support legs 36, 38. The foam pad or layer 52 is typically manufactured from a polymer based material, such as closed cell EPDM (ethylene propylene diene monomer) foam rubber, expanded EPDM rubber foam, closed cell closed cell polyurethane, neoprene, SBR (styrene-butadiene-rubber) blends and the like, and attached to the bottom surface by a conventional adhesive which adhesively secures the foam pad or layer 52 while still permitting periodic replacement of the foam pad or layer 52 in the event that the foam pad or layer 52 becomes sufficiently worn or torn. One suitable foam is an engineered foam sold under the trade name of Armacell™ by Armacell LLC of Spencer W. Va. This material has the following properties:
Density: 0.144±0.032 g/cm3
Hardness, Durometer Shore 00: 50±5 kPa
Compression Deflection (25%): 48±14 kPa
Tensile Strength: 690 kPa
Tear Strength: 3.3 kN/m
Elongation: 150%
Resilience: 30%
The bottom, roof engaging surface of the foam pad or layer 52 is designed to engage intimately with and grip the top exposed surface of roof, during use of the adjustable roof platform unit 2, and thus prevent any sliding or other movement thereof with respect to the roof. The foam pad or layer 52 typically has a thickness of between about ¼ and 2 inches, preferably has a thickness of about ½ of an inch thick. One characteristic of the foam pad or layer 52 is that the foam pad or layer 52 compresses fairly easily during use, as such compression ensures inmate contact with the exposed surface of the roof and gripping of the foam pad or layer 52 with the shingles, shakes or other exposed surface of the roof, without causing any damage to the same. In addition, the foam pad or layer 52 must still be sufficiently durable so as to permit repeated repositioning of the adjustable roof platform unit 2 for completion of that project or performance of additional projects.
At least one, and more preferably two or more leg cross members 54 interconnect the support legs 36, 38 with one another so as to maintain the desired spacing of the support legs 36, 38, during use of the adjustable roof platform 2, and also provide further support and rigidity for the adjustable roof platform 2. As shown in
As shown in
As shown in
The opposite second end 32 of each of the adjustable arms 26, 28 is received by and located within the channel of one of the support legs 36, 38 and generally slidably engages with the engagement surface 44 of the respective support leg 36 or 38. A pair of releasable securing bolts 58 selectively engage the through bore 34, formed in the second end 32 of the adjustable arms 26, 28, with a desired one of the plurality of engagement features, slots or openings 48 of the support legs 36, 38 to fix a relative orientation of the work platform 4 with respect to the support legs 36, 38 and also prevent inadvertent disengagement of the adjustable arm 26, 28 from the selected engagement feature, slot or opening 48 of the support legs 36, 38, during use of the adjustable roof platform 2. That is, once the second end 32 of the adjustable arm 26, 28 is aligned with a selected one of the plurality of engagement features, slots or openings 48, the securing bolt 58 is inserted through first side wall of the selected one of the plurality of engagement features, slots or openings 48, then through the through bore 34 of the adjustable arm 26 or 28, and finally through the other side wall of the selected one of the plurality of engagement features, slots or openings 48. Once installed, each securing bolt 58 is securely affixed by way of a nut and bolt assembly, a latch, a bolt and quick release pin assembly, ball pin assembly, or some other conventional quick coupling mechanism so that the adjustable arms 26, 28 are securely attached to the support legs 36, 38 and thus are no longer able to move axially along the support legs 36, 38. As a result of such connection, the work platform 4 is locked into a desired orientation with respect to the legs 36, 38, e.g., the base.
According to one embodiment of the securing bolt 58, the securing bolt 58 is size to have a slight clearance fit with at least the plurality of engagement features, slots or openings 48. In addition, each securing bolt 58 has at least one detent(s) (possibly two or more detents) formed in a side surface thereof adjacent a lead end surface of the securing bolt 58 and a push pin is located adjacent the opposite end of the securing bolt 58 and coupled for actuation of the at least one detent(s). Each detent is spring biased radially outward so as to have an interference fit with the selected one of the plurality of engagement features, slots or openings 48, and locked in that position by the push pin, and thus prevent inadvertent withdrawal of the securing bolt 58 from the selected engagement feature, slot or opening 48. However, when the push pin is actuated, the detent(s) can move radially inward, against the force of the spring, so that the securing bolt 58 may be withdrawn from the selected engagement feature, slot or opening 48 and the adjustable arms 26, 28 may be repositioned, as desired.
As noted above, the work platform 4 forms an angle α relative to the support legs 36, 38 and this angle can be a substantially identical complementary angle β to the angle formed between the ceiling joists and the rafters of the roof so that the work platform 4, once engaged with that roof, will be maintained in a substantially horizontally orientation with respect to the ground. Such orientation facilitates formation of a substantially level work platform for use by the contractor, the roofer, the painter, the maintenance worker, the home owner or some other user to stand, knee or sit on while using the adjustable roof platform 2 and accomplishing a desired project on the roof.
As generally shown in
Preferably, the adjustable roof platform 2 is light weight, e.g., typically has a total overall weight of between 15 and 25 pounds. Due to its light weight, the adjustable roof platform 2 facilitates ease of use by the contractor, the roofer, the painter, the maintenance worker, the home owner or some other user.
With further reference to
When necessary or desired, the user can thereafter reposition the adjustable roof platform 2 at another desired location on the roof. Due to inherent weight of the adjustable roof platform 2, as well as the relative softness of the foam pad or layer 52 supported by the bottom surface 50 of the support legs 36, 38, the foam material 52 will be compressed against and intimately engage with and follow the contour of the exposed surface of the roof. The foam pad or layer 52 facilitates achieving maximum surface contact and engagement with the exposed surface of the roof and thus achieves a secure but releasable adhesion between the adjustable roof platform 2 and the roof. When the user then steps on the work platform 4 of the adjustable roof platform 2, this additional weight further compresses the foam pad or layer 52, against the exterior surface of roof, and such further compression generally increases the gripping action between the foam pad or layer 52 of the adjustable roof platform 2 and the exterior surface of the roof.
As the adjustable roof platform 2 is solely secured to the roof as a result of the compressed foam pad or layer 52, it is very easy and convenient to reposition the adjustable roof platform 2 to another desired location on the roof by merely stepping off of the work platform 4 of the adjustable roof platform 2, picking up the adjustable roof platform 2 and moving and placing the adjustable roof platform 2 at another desired location or position where the foam pad or layer 52 will again be compressed against and intimately engage with and follow the contour of the exposed surface of the roof due to the inherent weight of the adjustable roof platform 2. If the pitch of the roof changes, then adjustment of position of the adjustable arms 26, 28, as discussed above, may be warranted or desirable.
In an alternative embodiment, the engagement features, slots or openings 48 may be replaced by other means of securing the second end 32 of the adjustable arms 26, 28 when engaged with the engagement surface 44, such as, providing notches or retention ridges on the engagement surface 44, providing the engagement surface 44 with a grip surface (not shown) similar to that of the grip material layer 8 of the work platform 4, or providing recesses in the side walls of the support legs 36, 38 and providing the second end 32 of the adjustable arms 26, 28 with a mating protrusion or some other mating feature to be securely mated within the recesses of the support legs 36, 38.
Additionally, in a further alternative embodiment, a single elongate connector pin 56 and securing bolt 58 may extend the entire width of the adjustable roof platform 2 so that the single connector pin 56 and the single securing bolt 58 can simultaneously mate with and secure both the adjustable arms 26, 28. For example, the connector pin 56 may be long enough to connect both hinge apertures 46 of each of the support legs 36, 38 to the respective hinge openings 22 of the hinges 12. In this alternative embodiment, the amount of connector pins 56 and securing bolts 58 used for operation of the adjustable roof platform 2 would be reduced by one half.
In a further alternative embodiment, the platform hinges 12 may have a different configuration, e.g., be “L-shaped” where the base portion 14 and the leg portion 16 form a right angle with one another, and the platform hinges 12 are coupled to the work platform by the base portion 14, by screws, fasteners, nut and bolt assembly, adhesive or other conventional means.
Preferably the foam pads or layers 52 have a surface area between about 80 square inches and about 300 square inches, more preferably the foam pads or layers 52 have a surface area between about 120 square inches and about 240 square inches, and most preferably the foam pads or layers 52 have a surface area about 160 square inches. If increased gripping between the adjustable roof platform 2 and the roof is desired, it is to be appreciated that either the length and/or the width of the first and the second support legs 36, 38 may be increased. Any such increased surface area of the support legs 36, 38 is also covered with the foam pad or layer 52 in order to increase the contact surface area, between the adjustable roof platform 2 and the roof, which in turn provides the additional gripping force. If desired, the adjustable roof platform 2 can be provided with leg extenders (not shown), for each one of the support legs 36, 38, which have the foam pad or layer 52 adhered to a bottom surface thereof and are readily releasably connectable to each of the support legs 36, 38 to extend their length and the overall contact surface area.
Since certain changes may be made in the above described adjustable roof platform, without departing from the spirit and scope of the invention herein involved, it is intended that all of the subject matter of the above description or shown in the accompanying drawings shall be interpreted merely as examples illustrating the inventive concept herein and shall not be construed as limiting the invention.
Claims
1. An adjustable roof platform comprising:
- a work platform having first and second ends and opposed top and bottom surfaces;
- a base having a first end and a second end and opposed top and bottom surfaces, the first end of the work platform being pivotally connected to the first end of the base and the bottom surface of the base having a foam layer; and
- at least one adjustable arm for adjustably connecting the second end of the work platform to the base.
2. An adjustable roof platform comprising:
- a work platform having first and second ends and opposed top and bottom surfaces;
- first and second spaced apart support legs each having a first end and a second end and opposed top and bottom surfaces, the first end of the work platform being pivotally connected to the first ends of the support legs and the bottom surfaces of each support legs having a foam layer;
- at least one member connecting the first and the second support legs with one another; and
- at least one adjustable arm for adjustably connecting the second end of the work platform to the support legs.
3. The adjustable roof platform according to claim 2, wherein a first end of a first adjustable arm is pivotally connected to the second end of the work platform and an opposite end of the first adjustable arm is releasably connected with the first support leg, and a first end of a second adjustable arm is pivotally connected to the second end of the work platform and an opposite end of the second adjustable arm is releasably connected with the second support leg.
4. The adjustable roof platform according to claim 3, wherein at least one arm cross member connects the first adjustable arm with the second adjustable arm so that the first and second arms move together in unison with one another.
5. The adjustable roof platform according to claim 2, wherein at least one leg cross member connects the first leg support with the second leg support.
6. The adjustable roof platform according to claim 2, wherein the foam layer has a surface area of between about 80 square inches and about 300 square inches and, once engaged with a roof, the foam layer intimately engages and grips a top exposed surface of the roof so as to prevent undesired movement the adjustable roof platform unit relative to the roof.
7. The adjustable roof platform according to claim 6, wherein the foam layer substantially covers the entire bottom surface of each of the first and the second support legs.
8. The adjustable roof platform according to claim 6, wherein the foam layer has a thickness of between about ¼ and 2 inches and is manufactured from a polymer material.
9. The adjustable roof platform according to claim 3, wherein each of the first and the second support legs has a generally U-shaped configuration which defines an elongate channel which extends along an inner central region of each of the first and the second support legs.
10. The adjustable roof platform according to claim 3, wherein a plurality of spaced apart engagement openings are provided adjacent a second end of each of the first and the second support legs, and a second end of the first adjustable arm engages with a selected one of the spaced apart engagement openings of the first support leg, and a second end of the second adjustable arm engages with a selected one of the spaced apart engagement openings of the second support leg.
11. The adjustable roof platform according to claim 10, wherein the engagement openings are spaced apart from one another by a distance of between about a ½ inch to about 1½ inches so as to preferably facilitate adjusting an angle formed between the work platform and the first and second support legs between about 0 degrees and about 45 degrees.
12. The adjustable roof platform according to claim 11, wherein the engagement openings are spaced apart from one another so as to adjust the angle formed between the work platform and the first and second support legs in substantial 5 degree increments.
13. The adjustable roof platform according to claim 2, wherein the adjustable roof platform includes a storage pouch for accommodate at least one item.
14. The adjustable roof platform according to claim 2, wherein the top surface of the work platform has one of an anti-slip coating, an anti-slip material and an anti-slip layer which reduces slippage during use of the adjustable roof platform.
15. The adjustable roof platform according to claim 2, wherein a top surface of the work platform 4 typically has a surface area between at least about 225 square inches and about 576 square inches.
Type: Application
Filed: Sep 30, 2010
Publication Date: Apr 5, 2012
Inventor: Arnold LORD (West Ossipee, NH)
Application Number: 12/894,602
International Classification: E04G 3/26 (20060101);