Handling: hand and hoist-line implements – Hand bars and hand barrows – Ball retriever
Reexamination Certificate
2002-11-15
2004-11-23
Chin, Paul (Department: 3652)
Handling: hand and hoist-line implements
Hand bars and hand barrows
Ball retriever
C294S104000, C410S041000, C410S099000
Reexamination Certificate
active
06820906
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a hand tool for installing tie-down strap corner protectors for use in connection with securing cargo loads in the trucking or other transporting industry. The strap corner protector installation tool has particular utility in connection with reaching and placing corner protectors under tie-down straps in areas around sharp corners, while standing on the ground.
2. Description of the Prior Art
In the trucking industry and other industries involving the transporting of goods, safety is a major concern. It is essential that heavy loads, which often may reach heights up to at least 14 feet, be securely tied down. Strapping and chaining techniques are generally used to properly secure these loads. Where the tie-down straps are pulled tightly over sharp corners, they can become frayed and even cut from the rigors of travel. As a result, corner protectors are often installed over the corners and under the strap to protect both the strap and the cargo. These corner protectors can also be used with chains to help protect the cargo. Since the cargo loads may be tall, the trucker will often have to climb up on top of the load to install the corner protector, which in itself can be a dangerous situation. The present invention discloses a tool that allows these corner protectors to be installed easily and quickly while standing on the ground.
The use of tools for reaching high places and performing specific jobs, as well as cargo corner protectors in general are known in the prior art. For example, U.S. Pat. No. 5,596,863 to Kasel discloses a method and apparatus for applying edge protectors underneath strapping. However, the Kasel '863 patent has a different structure from that of the present invention in that it does not disclose a simple hand tool for installing the corner protectors, but rather a large mechanical frame that is raised and lowered to install the edge protectors on the cargo load.
U.S. Pat. No. 5,848,865 to Beals discloses a lading tie-down strap protector for shielding a tie-down strap in the corner areas of lading or cargo loads and U.S. Pat. No. 4,765,479 to Roberts discloses a strapping corner support. However, both the Beals '865 patent and the Roberts '479 patent are different functionally since they address the corner protectors, but do not address the installation of these protectors.
U.S. Pat. Nos. 4,611,512 to Honda and 2,388,137 to Graumlich disclose devices for replacing fluorescent lamps in high installations, both of which use a long pole for reaching up and changing the lamps. However, both the Honda '512 and Graumlich '137 patents have a different structure from that of the present invention and do not offer the fixturing needed to address the issue of installing corner strapping protectors over cargo loads.
Similarly, U.S. Pat. No. 4,516,360 to Gringer et al. discloses a molded pole-type sandpapering tool for sanding at elevated heights while standing on the floor. However, the Gringer '360 patent has a different structure from that of the present invention and does not offer the fixturing needed to address the issue of installing corner strapping protectors over cargo loads.
Lastly, U.S. Pat. Nos. 5,493,758 to Carmien, D379,401 to Cob discloses apparatus that may be of general interest and pertinent to the construction and design of the present invention. The Carmien '758 and the Cob '401 patents disclose an extension pole and the design of a telescoping pole, respectively, both of which may relate to the present invention. However, these patents do not offer the fixturing needed to address the issue of installing corner strapping protectors over cargo loads.
While the above-described devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not describe a hand tool for use in installing cargo corner protectors from a ground position. While the Honda '512, Graumlich '137, and Gringer '360 patents disclose apparatuses for performing operations at elevated heights, they make no provision for providing fixturing needed to address the issue of installing corner strapping protectors over cargo loads.
Therefore, a need exists for a new and improved hand tool that can be used for installing cargo corner protectors from a ground position. In this regard, the present invention substantially fulfills this need. In this respect, the hand tool for installing corner tie-down protectors according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in doing so provides an apparatus primarily developed for the purpose of installing tie-down protectors over the corners of cargo loads from a ground position.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in the known types of cargo corner protector installation tools now present in the prior art, the present invention provides an improved corner protector installation hand tool, and overcomes the above-mentioned disadvantages and drawbacks of the prior art. As such, the general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new and improved hand tool and method that has all the advantages of the prior art mentioned heretofore and many novel features that result in a corner protector installation hand tool that is not anticipated, rendered obvious, suggested, or even implied by the prior art, either alone or in any combination thereof.
The present disclosed invention is comprised of a hand tool for lifting and positioning a corner protector under the cargo tie-down strap on a flatbed trailer or other cargo transportation vehicle. This tool will enable the corner protector to be quickly and easily applied by the truck driver while standing on the ground, thereby eliminating the need for scaling the side of the loaded flatbed trailer. It will speed up the loading operation and avoid a possible fall to the ground from an elevated height.
The tool measures approximately 12 inches long, 1¼ inches tall, and 4½ inches wide. The base is comprised of a straight tubular handle that can be connected to an industrial-grade telescopic pole (purchased separately). The working end of the tool contains a stationary flat rectangular blade-like back panel attached to a back clip and a rectangular flat blade-like front panel attached to a front rotatable clip that is spring-loaded to serve as a jaw-like holder of tie-down corner protectors. The front clip has a clipboard-style spring loaded means that is activated by pressing a small lever handle extending from the front clip, thereby pivoting the spring-loaded jaw of the front panel away from the stationary back panel. This enables the corner protector to be slipped into position and clamped between the front and back panels.
In use, the truck driver will insert a corner protector between the front and back panels of the installation tool, with extension pole attached, and holding the tool with one hand and the loose strap with the other hand, slightly lift the strap and place the corner protector in place under the strap. The strap is then pull downward on top of the corner protector and the installation tool is pull downward disengaging it from the corner protector, thereby leaving the corner protector in place under the strap. The strap is then pulled tight over the corner protector and secured.
Alternately, the installation tool of the present invention can be used with corner protectors in combination with tie-down chains.
Since the lifting, positioning, and releasing of the corner protector is be performed while standing on the ground beside the flatbed, there is no need for climbing, straining, and possibly falling from an elevated height. This hand tool is ideally suited for truck drivers and trucking companies who use corner protectors to protect their straps and loads from possible damage while traveling. It can also be used on ships, rai
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