The present disclosure relates to commercial construction. More particularly, the present disclosure relates to a system and method of providing enhanced safety for commercial construction rooftop workers via an easily portable counterweighted anchoring and safety harness assembly.
Building construction has always been, and continues to be, a necessary, yet inherently dangerous, industry. Heavy materials, large equipment, and heights all add to the intrinsic risk of this industry. The dangers are particularly true and salient for the roofing industry. When installing roofing, it is not uncommon to have many workers on the roof level, where they are interacting with dangerous components and with each other at dangerous heights. The more workers on the roof, the higher the odds of an accident. In an effort to reduce these risks and reduce the frequency of accidents and injury, special safety measures have been implemented for roof workers. Such measures include individual worker safety harnesses. Yet, while the risk is lowered, accidents still occur. Further, such safety measures slow the process of roof installation and impede building efficiency, as each construction worker on the roof must ensure that the appropriate safety measures are complied with and completed. This may include releasing a first strap while relocating to a new working position, and then securing a second strap. If only one strap is used by a worker, the worker risks falling when relocating to a new position on the roof. Each of these measures involve risk, time, and thereby reduce efficiency and/or safety. Further, equipment must be hoisted to those workers on the roof. Cranes or other devices lift such materials to the roof, wherein the cranes create a new danger when delivering materials and interacting with or influencing the movements of the workers on the roof.
There is a clear, continuing need for a system to reduce the risks posed in roof construction and installation work, while simultaneously promoting an increase in the efficiency of assembly and roof installation. The present invention seeks to address these and other problems. Specifically, during construction of a building, such as a large warehouse, the assembly of the present invention may be positioned to act as a fall protection system to reduce the likelihood and number of fall accidents, and in the event of an actual construction worker fall, the present invention will act as a fall arrest anchor and restraint system.
In one embodiment, a mobile safety anchor system for roofing construction comprises a ride-on tractor, an unrestricted swiveling boom mounted atop the tractor, two opposing counterweighted swivel arms, with one of these swivel arms forming a personal worker user safety anchoring system comprising a retractable safety cable linked to a weighted fall arm anchor, wherein the opposing swivel arm forms an equal counterweight and thereby enhances stability when the emergency safety mechanisms of the system are activated.
In one embodiment, a mobile safety anchor system also features a swivel plate atop the swivel frame with a number of fixed circular openings therein which allow an accompanying swivel pin to be placed into the hole of the swivel plate to secure the swivel boom and fall arms in an immobile posture. Securing the swivel boom can facilitate the operation of hoisting and general transport and movement of the construction roofing safety system itself to new construction sites and to different work areas at the same worksite.
In one embodiment, a mobile safety anchor system for roofing construction comprises a ride-on tractor, a swiveling boom mounted to the tractor having a first arm and a second arm, wherein the first arm is weighted and the second arm comprises one or more penetrating protrusions for penetrating the roof and preventing movement of the ride-on tractor, thereby anchoring a user.
Some embodiments of the present invention are illustrated as an example and are not limited by the figures of the accompanying drawings or by the depiction in the accompanying photo page. The figures and photo page are illustrative of invention functionality and are not necessarily to actual scale.
The following descriptions depict only example embodiments and are not to be considered limiting in scope. Any reference herein to “the invention” is not intended to restrict or limit the invention to exact features or steps of any one or more of the exemplary embodiments disclosed in the present specification. References to “one embodiment,” “an embodiment,” “various embodiments,” and the like, may indicate that the embodiment(s) so described may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes the particular feature, structure, or characteristic. Further, repeated use of the phrase “in one embodiment,” or “in an embodiment,” do not necessarily refer to the same embodiment, although they may.
Reference to the drawings is done throughout the disclosure using various numbers. The numbers used are for the convenience of the drafter only and the absence of numbers in an apparent sequence should not be considered limiting and does not imply that additional parts of that particular embodiment exist. Numbering patterns from one embodiment to the other need not imply that each embodiment has similar parts, although it may.
Accordingly, the particular arrangements disclosed are meant to be illustrative only and not limiting as to the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalents thereof. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation. Unless otherwise expressly defined herein, such terms are intended to be given their broad, ordinary, and customary meaning not inconsistent with that applicable in the relevant industry and without restriction to any specific embodiment hereinafter described. As used herein, the article “a” is intended to include one or more items. When used herein to join a list of items, the term “or” denotes at least one of the items, but does not exclude a plurality of items of the list. For exemplary methods or processes, the sequence and/or arrangement of steps described herein are illustrative and not restrictive.
It should be understood that the steps of any such processes or methods are not limited to being carried out in any particular sequence, arrangement, or with any particular graphics or interface. Indeed, the steps of the disclosed processes or methods generally may be carried out in various different sequences and arrangements while still falling within the scope of the present invention.
The term “coupled” may mean that two or more elements are in direct physical contact. However, “coupled” may also mean that two or more elements are not in direct contact with each other, but yet still cooperate or interact with each other.
The terms “comprising,” “including,” “having,” and the like, as used with respect to embodiments, are synonymous, and are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including, but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes, but is not limited to,” etc.).
As discussed earlier herein, there is a need for a safety system that reduces the risks posed in roof construction and installation work, while simultaneously promoting an increase in the efficiency of assembly and roof installation. The construction rooftop safety anchoring system and method disclosed herein solves these needs and others. Specifically, it is an improvement over current mobile personal worker fall protection systems.
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Referring again to
The swivel boom 104 is coupled to the tractor 102 via frame 128. As shown, the swivel boom 104 is ideally positioned around the center of the tractor 102, although that positioning is not required. The frame 128 straddles each opposing lateral side of the tractor 102 and may be bolted, welded, or otherwise secured to the frame or chassis of the tractor 102. The frame 128 may have one or more trays 130, 132 coupled thereto for storage of tools or other components.
In one embodiment, the axle 134 connecting the swivel boom 104 with the frame 128 may be lubricated with fluids of differing viscosity, to promote or reduce the inertia of the swivel boom 104 and/or frictional resistance of the boom 104 to movement. In one embodiment, the inertia of the swivel boom 104, and/or frictional resistance of the swivel boom 104 to movement, may be manipulated by setting or adjusting the frictional tension of the component parts of the axle 134 against each other or, alternatively or in addition, through the application of pads or a sleeve (e.g., of thin gauge, non-flammable natural or synthetic elastomeric materials) around the axle 134 to adjust the inertial characteristics and/or frictional resistance of the swivel boom 104 to movement. The self-retracting spooling device 114 that couples the worker to the swivel boom 104 creates sufficient tension that ordinarily inhibits over-travel of the swivel boom 104. However, the freedom of movement of the assembly, including swivel boom 104 (with first arm 106 and second arm 108), can be set to match the desired movement characteristics of the user, for example, to allay potential concerns that the arms, in motion, may continue to move to an undesired extent once worker movement on the roof has stopped.
In one embodiment, one or more coiled springs (not shown) may be linked between the swivel boom 104 and the fall arm assembly 112. In one embodiment, this linkage is located at or below (distal to) the level of the spooling device tray 122. In one embodiment, one or more dashpot shock absorbers (dampers) are used in alternative or in conjunction with the one or more coiled springs. A coiled spring, or shock absorber, may be coupled separately between the swivel boom 104 extending to each separate arm 106, 108, or alternatively, a coiled spring or shock absorber may be coupled between the swivel boom 104 the fall arm assembly 112. The tension of a coiled spring or shock absorber will facilitate slowing and stopping the movement of a worker in a potential fall incident, and further, may serve to facilitate recovering the fallen worker and resetting the fall arm assembly 112 to its initial resting position weighted against the second arm 108 (
In general operation, as shown in
In the event of a worker 142 fall, as shown in
During repositioning or hoisting of the mobile safety anchor system 100, a locking pin (e.g., bolt, cotter pin, etc.) may be inserted into an aperture 136 of the swivel boom plate 138, which mates with frame plate 140, stably arresting and securing the motion of the swivel boom 104 in one of a select number of predetermined positions.
It will be appreciated that the mobile safety anchor components are preferably fabricated primarily of steel; however, the components may also be built of other durable, hard, weather-resistant materials, including aluminum alloy, titanium alloy, or carbon composite, among others.
Exemplary embodiments are described in the preceding paragraphs. No element, act, or instruction used in this description should be construed as important, necessary, critical, or essential unless explicitly described as such. Note that although only a few of the exemplary embodiments have been described in detail herein, those skilled in the art will readily appreciate that many modifications are possible in these exemplary embodiments without materially departing from the novel teachings and advantages herein. Accordingly, all such modifications are intended to be included within the scope of this invention.
This application claims the benefit of U.S. Provisional Application Ser. No. 62/639,562, filed on Mar. 7, 2018, which is incorporated herein by reference.
Number | Date | Country | |
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62639562 | Mar 2018 | US |