BACKGROUND
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.
SUMMARY
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.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
a is a side view illustrating an embodiment of a push/pull tag line.
FIG. 1
b is a side view illustrating an embodiment of the push/pull tag line of FIG. 1a.
FIG. 1
c is a side view illustrating an embodiment of the push/pull tag line of FIGS. 1a and 1b with a rigid member cover removed.
FIG. 1
d is a partial cross-sectional view illustrating an embodiment of the push/pull tag line of FIG. 1c.
FIG. 1
e is a cross sectional view illustrating an embodiment of the push/pull tag line of FIGS. 1a, 1b, 1c, and 1e.
FIG. 2
a is a flow chart illustrating an embodiment of a method for positioning a load.
FIG. 2
b is a side view illustrating an embodiment of a load being lifted with the push/pull tag line of FIGS. 1a, 1b, 1c, 1d, and 1e coupled to the load.
FIG. 2
c is a side view illustrating an embodiment of the load of FIG. 2b being positioned by a user using a flexible member on the push/pull tag line of FIGS. 1a, 1b, 1c, 1d, and 1e.
FIG. 2
d is a side view illustrating an embodiment of the load of FIG. 2c being positioned by the user using an elongated rigid member on the push/pull tag line of FIGS. 1a, 1b, 1c, 1d, and 1e.
FIG. 2
e is a side view illustrating an embodiment of the load of FIGS. 2b, 2c, and 2d with the push/pull tag line of FIGS. 1a, 1b, 1c, 1d, and 1e decoupled from the load.
FIG. 3
a is a partial cross-sectional view illustrating an embodiment of a push/pull tag line.
FIG. 3
b is a cross-sectional view illustrating an embodiment of the push/pull tag line of FIG. 3a.
FIG. 4 is a side view illustrating an embodiment of a push/pull tag line.
FIG. 5 is a side view illustrating an embodiment of a push/pull tag line.
FIG. 6 is a side view illustrating an embodiment of a push/pull tag line.
FIG. 7 is a perspective view illustrating an embodiment of a load connector on a push/pull tag line.
DETAILED DESCRIPTION
Referring first to FIGS. 1a, 1b, 1c, 1d, and 1e, a push/pull tag line 100 is illustrated. The push/pull tag line 100 includes a load connector 102 that is coupled to a rigid section 104, and a flexible section 106 that extends from the rigid section 104. In an embodiment, the load connector 102 includes a load coupling member 102a and a load securing member 102b that is moveably coupled to the load coupling member 102. In the illustrated embodiment, the load coupling member 102a and the load securing member 102b of the load connector 102 provide a snap-hook that allows the push/pull tag line 100 to be quickly and easily connected and secured to a load, as will be explained in further detail below. While a specific load connector 102 has been described and illustrated, one of skill in the art will recognize that a variety of load connectors having different structure and functionality may be substituted without departing from the scope of the present disclosure.
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 FIGS. 1a, 1b, 2a, 2b, and 2c, a method 200 for positioning a load is illustrated. The method 200 begins at block 202 where a load coupled to a load support line is provided. A load 202a that includes a tag line coupling 202b and that is coupled to a load support line 202c is provided. In an embodiment, the load support line 202c may be coupled to a lifting mechanism such as, for example, a crane and/or other lifting mechanism known in the art, in order to facilitate the positioning of the load 202a at a load destination 202d by a user 202e. The method 200 then proceeds to block 204 where a tag line is coupled to the load. In an embodiment, the push/pull tag line 100 is coupled to the load 202a by attaching the load connector 102 to the tag line coupling 202b using the load coupling member 102a and securing the load connector 102 to the tag line coupling 202b using the load securing member 102b. The load 202a may then be lifted using the load support line 202c. With the push/pull tag line 100 coupled to the load 202a during the lifting of the load 202a, the push/pull tag line 100 hangs from the load 202a due to the force of gravity, as illustrated in FIG. 2b. The method 200 then proceeds to block 206 where the flexible member on the tag line is acquired. As the load 202a is lowered towards the load destination 202d using the load support line 202c, the user 202e may acquire the distal end 106b of the flexible member 106a in order to gain control of and acquire the flexible member 106a, as illustrated in FIG. 2c.
Referring now to FIGS. 1a, 1b, 1c, 2a, 2c, and 2d, the method 200 then proceeds to block 208 where a pulling force is applied on the flexible member to position the load. Upon acquiring the flexible member 106a, the user 202e may then position the load 202a by applying a pulling force A to the flexible member 106a that is directed away from the load 202a, and the pulling force A will be transmitted through the push/pull tag line 100 to the load 202a to move the load 202a in a direction B and position the load 202a adjacent the load destination 202d. However, in the event the pulling force A is too great, applied for too long, etc., the load 202a may move too far in the direction B and may not be positioned appropriately adjacent the load destination 202d. The method 200 may then proceed to block 210 where a pushing force is applied on the rigid member to position the load. As the load 202a is lowered further using the load support line 202c from the position illustrated in FIG. 2c, the user 202e may use the flexible member 106a to acquire the rigid member 104a, as illustrated in FIG. 2d. In acquiring the elongated rigid member 104a, the user 202e may choose to grip the elongated rigid member 104a adjacent the first end 104b in order to be positioned as far as possible from the load 202a in order to lessen the risk of injury while safely positioning the load 202a using the elongated rigid member 104a. The user 202e may then apply a pushing force C that is directed towards the load 202a, and the pushing force C will be transmitted through the elongated rigid member 104a to the load 202a to move the load 202a in a direction D to position the load 202a adjacent the load destination 202d. Furthermore, the user 202e may apply a pulling force to the elongated rigid member 104a that is directed opposite the pushing force C and away from the load 202a, and that pulling force will be transmitted through the elongated rigid member 104a to the load 202a to move the load 202a in a direction opposite the direction D and position the load 202a adjacent the load destination 202d. Also, other forces may be applied to the elongated rigid member 104a and transmitted through the elongated rigid member 104a to the load 202a to move the load 202a in any direction the user 202e desires in order to position the load 202a adjacent the load destination 202d such that the load 202a may be positioned on the load destination 202d, as illustrated in FIG. 2e.
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 FIG. 2e.
Referring now to FIGS. 3a and 3b, a push/pull tag line 300 is illustrated that is substantially similar in structure and operation to the push/pull tag line 100 described above with reference to FIGS. 1a, 1b, 1c, 1d, 1e, 2a, 2b, 2c, 2d, and 2e, with the provision of a modified elongated rigid member 302 and flexible member 304. In the illustrated embodiment, the elongated rigid member 302 is an elongated rigid solid member that includes a first end 302a, a second end 302b and an outer surface 302c. The load coupling member 102a and the load securing member 102b are rigidly mounted to the second end 302b of the elongated rigid member 302. The flexible member 304 is secured to the elongated rigid member 302, engages the outer surface 302c of the elongated rigid member 302, and extends from the first end 302a of the elongated rigid member 302. The push/pull tag line 300 is operable in the same manner as described above for the push/pull tag line 100 according to the method 200.
Referring now to FIG. 4, a push/pull tag line 400 is illustrated that is substantially similar in structure and operation to the push/pull tag line 300 described above with reference to FIGS. 3a and 3b, with the provision of secondary load coupling member 402 that is coupled to the second end 302b of the rigid member 302 by a secondary flexible member 404. In an embodiment, the push/pull tag line 400 is operable in the same manner as described above for the push/pull tag line 100 according to the method 200, with the provision that the secondary load coupling member 402 may be coupled to the load 202a to provide a redundant connection for the push/pull tag line 400 to the load 202a.
Referring now to FIG. 5, a push/pull tag line 500 is illustrated that is substantially similar in structure and operation to the push/pull tag line 400 described above with reference to FIG. 4, with the removal of the load coupling member 102a and the load securing member 102b. In an embodiment, the push/pull tag line 500 is operable in the same manner as described above for the push/pull tag line 100 according to the method 200, with the provision that the secondary load coupling member 402 may be coupled to the load 202a in the manner described for the load connector 102.
Referring now to FIG. 6, a push/pull tag line 600 is illustrated that is substantially similar in structure and operation to the push/pull tag line 100 described above with reference to FIGS. 1a, 1b, 1c, 1d, 1e, 2a, 2b, 2c, 2d, and 2e, with the provision of a handle 602 that extends from the rigid section 104. In an embodiment, the handle 602 may extend from the rigid member 104a. In another embodiment, the handle 602 may extend from the rigid member cover 104d. The push/pull tag line 600 is operable in the same manner as described above for the push/pull tag line 100 according to the method 200, with the provision that the handle 602 may be used to precisely position the load 202a.
Referring now to FIG. 7, a push/pull tag line 700 is illustrated that is substantially similar in structure and operation to the push/pull tag line 100 described above with reference to FIGS. 1a, 1b, 1c, 1d, 1e, 2a, 2b, 2c, 2d, and 2e, with the provision of a modified load connector 702 replacing the load connector 102. The modified load connector 702 includes a load coupling member 702a and a load securing member 702b. In the illustrated embodiment, the load coupling member 102a and the load securing member 102b of the load connector 102 provide a strap and rings connector that allow the load connector 702 to be secured to a load using methods known in the art. The push/pull tag line 700 is operable in the same manner as described above for the push/pull tag line 100 according to the method 200, with the provision that the load connector 702 is coupled to the load 202a in place of the load connector 102.
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.
Patent Application
20120043514
