The present disclosure relates generally to positioning loads, and more particularly to push/pull tag line system for precisely and safely positioning a load.
Conventional methods for positioning loads typically involve a lifting mechanism such as, for example, a crane, that includes a load support line. A load may be coupled to the load support line and the lifting mechanism may then be used to lift and move the load to a desired location. The positioning of the load once it has been moved into the vicinity of the desired location can raise a number of issues.
Traditionally, tag lines have been used to provide positioning of the load once it has been moved into the vicinity of the desired location. Conventional tag lines include a carabiner attached to a rope. The carabiner is secured to the load, and when the load is moved into the vicinity of the desired location, a user may grab and pull the rope in order to move the load towards the desired location. However, for situations in which precise positioning of the load on the desired location is required, these conventional tag lines provide several disadvantages. For example, the rope only allows a pulling force to be imparted by the user on the rope. If the load is pulled beyond the desired location, the user must either wait for the load to swing back past the desired location, which increases the time needed to position the load, attach an additional tag line to the load to be able to pull the load in an opposite direction, which complicates the positioning of the load, or the user must push directly on the load to move it to the desired location, which increases the risk of injury to the user that is associated with the positioning of the load.
Accordingly, it would be desirable to provide an improved tag line.
A push/pull tag line includes an elongated rigid member having a first end and a second end located opposite the first end, a flexible member coupled to the elongated rigid member and extending from the first end of the elongated rigid member, and a load connector coupled to the second end of the elongated rigid member.
a is a side view illustrating an embodiment of a push/pull tag line.
b is a side view illustrating an embodiment of the push/pull tag line of
c is a side view illustrating an embodiment of the push/pull tag line of
d is a partial cross-sectional view illustrating an embodiment of the push/pull tag line of
e is a cross sectional view illustrating an embodiment of the push/pull tag line of
a is a flow chart illustrating an embodiment of a method for positioning a load.
b is a side view illustrating an embodiment of a load being lifted with the push/pull tag line of
c is a side view illustrating an embodiment of the load of
d is a side view illustrating an embodiment of the load of
e is a side view illustrating an embodiment of the load of
a is a partial cross-sectional view illustrating an embodiment of a push/pull tag line.
b is a cross-sectional view illustrating an embodiment of the push/pull tag line of
Referring first to
In an embodiment, the rigid section 104 includes an elongated rigid member 104a having a first end 104b and a second end 104c located opposite the first end 104b, and a rigid member cover 104d that engages an outer surface 104e of the elongated rigid member 104a. In the illustrated embodiment, the elongated rigid member 104a is an elongated rigid tubular member that defines a passageway 104f extending along the length of the elongated rigid member 104a, and the rigid member cover 104d includes a rope. In an embodiment, the elongated rigid tubular member 104a may be a 3/16 inch stainless steel type-304 rod. In an embodiment, the elongated rigid tubular member 104a may be a fiberglass rod. In an embodiment, the elongated rigid tubular member 104a may be a Poly Vinyl Chloride (PVC) pipe. Thus, elongated rigid member 104a may be fabricated from a variety of materials as long as the structure of the elongated rigid member 104a is rigid and not flexible such that the elongated rigid member 104a will transmit a force that is applied to the elongated rigid member 104a in any direction, described in further detail below. In an embodiment, the rigid member cover 104d may be a 5/16 inch diameter 3 strand twisted nylon rope that includes heat shrink wrapped sections 104g. In an embodiment, the rigid member cover 104d is a rope that is wrapped around the elongated rigid member 104a in a substantially perpendicular orientation relative to the longitudinal axis of the push/pull tag line 100 in order to provide better grip on the push/pull tag line 100 for a user. In the illustrated embodiment, the load connector 102 is rigidly mounted to the second end 104c of the elongated rigid member 104a by, for example, a weld and/or other rigid mounting means known in the art.
In an embodiment, the flexible section 106 includes a flexible member 106a that is secured to the elongated rigid member 104a and extends through the passageway 104f defined by the elongated rigid member 104a and out of the elongated rigid member 104a from the first end 104b. In an embodiment, the flexible member 106a may be a ⅝ inch diameter polyester and ultra blue fiber rope. In an embodiment, the flexible member 106a may be a nylon rope. In an embodiment, the flexible member 106a may be a polydacron rope. Thus, the flexible member 106a may be fabricated from a variety of material as long as the structure of the flexible member 106a is flexible. In an embodiment, an outer layer of smaller diameter rope may be wrapped around the flexible member 106a in order to resist the flexible member 106a from turning on itself and wrapping around objects. In an embodiment, the flexible member 106a has no knots or raised surfaces. In an embodiment, the flexible member 106a has been dipped in polyurethane in order to, for example, increase the resistance of the flexible member 106 to ultraviolet radiation, toughen the flexible member 106a, and/or a variety of other benefits known in the art.
In an embodiment, the rigid section 104 of the push/pull tag line 100 may be approximately 4 feet long, while the flexible member 106a that makes up the flexible section 106 of the push/pull tag line 100 may be approximately 10-15 feet measured from a point on the flexible member 106a immediately adjacent the first end 104b of the elongated rigid member 104a to the distal end 106b of the flexible member 106a that is part of the flexible section 106 of the push/pull tag line 100. However, one of skill in the art will recognize that the dimensions of the rigid section 104 and the flexible section 106 may be modified from those disclosed above without departing from the scope of the present disclosure.
Referring now to
Referring now to
Thus, as the load 202a is moved in the vicinity of the load destination 202e, the elongated rigid member 104a allows the user 202e to position the load 202a by applying a variety of forces to the elongated rigid member 104a in order to move the load 202a in a variety of directions without the user 202e having to physically touch the load 202a, which allows precise positioning of the load 202a while decreasing the safety risk to the user 202e associated with positioning the load 202a. The dimensions of the rigid section 104 and the flexible section 106 on the push/pull tag line 100 may be varied according to application in order to ensure that a user will be able to acquire the push/pull tag line 100 using the flexible section 106 at an appropriate time during the moving of the load, and then precisely position the load using the rigid section 104 while remaining far enough away from the load to ensure the users safety. The method 200 then proceeds to block 212 where the tag line is decoupled from the load. The push/pull tag line 100 may be unsecured from the load 202a using the load securing member 102b and decoupled the from the load 202a by decoupling the load coupling member 102a from the tag line coupling 202b, as illustrated in
Referring now to
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Although illustrative embodiments have been shown and described, a wide range of modification, change and substitution is contemplated in the foregoing disclosure and in some instances, some features of the embodiments may be employed without a corresponding use of other features. Accordingly, it is appropriate that the appended claims be construed broadly and in a manner consistent with the scope of the embodiments disclosed herein.
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Number | Date | Country | |
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20120043514 A1 | Feb 2012 | US |