Fire escape – ladder – or scaffold – Pitched roof conforming scaffold
Reexamination Certificate
2001-03-09
2003-02-04
Chin-Shue, Alvin (Department: 3634)
Fire escape, ladder, or scaffold
Pitched roof conforming scaffold
C182S107000, C182S206000
Reexamination Certificate
active
06513625
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to ladder support devices and more particularly pertains to a new ladder support device for a roof for holding a ladder on a roof.
2. Description of the Prior Art
The use of ladder support devices is known in the prior art. More specifically, ladder support devices heretofore devised and utilized are known to consist basically of familiar, expected and obvious structural configurations, notwithstanding the myriad of designs encompassed by the crowded prior art which have been developed for the fulfillment of countless objectives and requirements.
Known prior art includes U.S. Pat. No. 4,678,061; U.S. Pat. No. 4,179,011; U.S. Pat. No. 4,787,478; U.S. Pat. No. 4,880,200; U.S. Pat. No. 1,007,347; and U.S. Des. Pat. No. 332,667.
While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not disclose a new ladder support device for a roof. The inventive device includes a first plate and a second plate. The first plate has a bottom edge, a top edge and a pair of side edges. The second plate has a bottom edge, a top edge and a pair of side edges. The top edges of the first and second plates are attached to each other along their lengths such that the plates are in an angular relationship with respect to each other. The plates have a top surface and a bottom surface. A bracket is coupled to the bottom edge of the first plate for removably engaging a top rung of the ladder. A block member is attached to the bottom surface of the first plate. The block member is positioned adjacent to and extends along the width of the second plate. The plates are placed on opposite sides of a roof to hold the ladder on the roof.
In these respects, the ladder support device for a roof according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in so doing provides an apparatus primarily developed for the purpose of holding a ladder on a roof.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in the known types of ladder support devices now present in the prior art, the present invention provides a new ladder support device for a roof construction wherein the same can be utilized for holding a ladder on a roof.
The general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new ladder support device for a roof apparatus and method which has many of the advantages of the ladder support devices mentioned heretofore and many novel features that result in a new ladder support device for a roof which is not anticipated, rendered obvious. suggested, or even implied by any of the prior art ladder support devices, either alone or in any combination thereof.
To attain this, the present invention generally comprises a first plate and a second plate. The first plate has a bottom edge, a top edge and a pair of side edges. The second plate has a bottom edge, a top edge and a pair of side edges. The top edges of the first and second plates are attached to each other along their lengths such that the plates are in an angular relationship with respect to each other. The plates have a top surface and a bottom surface. A bracket is coupled to the bottom edge of the first plate for removably engaging a top rung of the ladder. A block member is attached to the bottom surface of the first plate. The block member is positioned adjacent to and extends along the width of the second plate. The plates are placed on opposite sides of a roof to hold the ladder on the roof.
There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto.
In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.
Further, the purpose of the foregoing abstract is to enable the U.S. Patent and Trademark Office and the public generally, and especially the scientists, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. The abstract is neither intended to define the invention of the application, which is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.
It is therefore an object of the present invention to provide a new ladder support device for a roof apparatus and method which has many of the advantages of the ladder support devices mentioned heretofore and many novel features that result in a new ladder support device for a roof which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art ladder support devices, either alone or in any combination thereof.
It is another object of the present invention to provide a new ladder support device for a roof which may be easily and efficiently manufactured and marketed.
It is a further object of the present invention to provide a new ladder support device for a roof which is of a durable and reliable construction.
An even further object of the present invention is to provide a new, ladder support device for a roof which is susceptible of a low cost to manufacture with regard to both materials and labor, and which accordingly is then susceptible of low prices of sale to the consuming public, thereby making such ladder support device for a roof economically available to the buying public.
Still yet another object of the present invention is to provide a new ladder support device for a roof which provides in the apparatuses and methods of the prior art some of the advantages thereof, while simultaneously overcoming some of the disadvantages normally associated therewith.
Still another object of the present invention is to provide a new ladder support device for a roof for holding a ladder on a roof.
Yet another object of the present invention is to provide a new ladder support device for a roof which includes a first plate and a second plate. The first plate has a bottom edge, a top edge and a pair of side edges. The second plate has a bottom edge, a top edge and a pair of side edges. The top edges of the first and second plates are attached to each other along their lengths such that the plates are in an angular relationship with respect to each other. The plates have a top surface and a bottom surface. A bracket is coupled to the bottom edge of the first plate for removably engaging a top rung of the ladder. A block member is attached to the bottom surface of the first plate. The block member is positioned adjacent to and extends along the width of the second plate. The plates are placed on opposite sides of a roof to hold the ladder on the roof.
Still yet another object of the present invention is to provide a
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