CA2370897A1 - Helicopter line wear cover - Google Patents
Helicopter line wear cover Download PDFInfo
- Publication number
- CA2370897A1 CA2370897A1 CA 2370897 CA2370897A CA2370897A1 CA 2370897 A1 CA2370897 A1 CA 2370897A1 CA 2370897 CA2370897 CA 2370897 CA 2370897 A CA2370897 A CA 2370897A CA 2370897 A1 CA2370897 A1 CA 2370897A1
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- Prior art keywords
- cover
- attachment
- members
- edge
- side members
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/122—Sling or load protectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D1/00—Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Electric Cable Installation (AREA)
Abstract
A helicopter wear line cover for protecting and separating a load bearing cable used for lifting a load suspended from a helicopter from a non-load bearing cable used for controlling the release of the load which includes a pair of elongated flat side members connected together longitudinally along two lines of attachment to form a first tube between the side members, a first attachment member attached to one of the side members adjacent a first edge and a second attachment member attached to the other of the side members remote from the first edge. When the first and second attachment members are attached together, the side members form a second tube parallel with the first tube and separated from the tube by one of the side members and the diameters of the first and second tubes are large enough to enable free longitudinal movement of the cables within the first and second tubes when the first and second attachment members are attached together.
Description
Helicopter Line Wear Cover FIELD OF THE INVENTION
The present invention relates generally to helicopter line wear covers and more specifically to helicopter line wear covers protecting a load bearing line and a non-load bearing line and preventing tensile forces from causing wear on the lines.
BACKGROUND OF THE INVENTION
Helicopters are commonly employed in lifting, transporting and unloading of various cargo items suspended from a line or cable attached to the helicopter at one end and to the load to be lifted at the other. Helicopter load lines are usually comprised of two separate lines or cables, a load bearing line which supports the load and connects it to the helicopter, and a control line used to send control signals to the load latch permitting the helicopter operator, sitting in the helicopter cockpit, to :remotely unlatch a load release mechanism to release the load while the helicopter remains in the air:
In the past, helicopter load lines made of steel wire rope were employed as the load bearing line.
However, wire ropes are heavy and, as helicopters have limited lifting capacity, heavy wire ropes meant reduced loads could be carned by the helicopter. As a consequence, synthetic ropes have recently come into favour to replace wire ropes: Synthetic ropes have the advantage of being considerably lighter than wire ropes with equal carrying capacity, permitting heavier loads to be carried by the helicopter with a synthetic rope as compared to a wire rope: As a consequence, synthetic ropes have successfully replaced wire ropes in most helicopter load lifting operations employing a helicopter load line.
Synthetic ropes suffer from the disadvantage that they are much more prone to wear when contacted by other objects, such as the non-load bearing control wire positioned adjacent the load bearing line, as well as foreign objects on the ground, such as trees and the like which contact the synthetic load bearing line when the line is lowered to pick up a load, or to drop off a load. This is a particularly difficult problem in helicopter logging operations where helicopters are used to carry logs from a logging site to a collection site for transport to a lumber mill. The line often contacts trees and other foreign objects in raising and lowering a load for transport or to be dropped.
In order to protect synthetic load bearing lines from physical damage, covers have been employed to cover all, or a part of, the load bearing line preventing the line from contacting foreign objects thereby reducing the wear and tear on the line, lengthening its life and reducing the possibility of line breakage. These covers usually also cover the control line to protect it from damage and wear from the elements and from foreign matter, such as tree branches and the like.
When a cover is wrapped about the control line and the load line, both lines can be damaged when they rub together, due primarily to vibrational forces on the lines which causes wear on both lines as they contact one another. A cover maintains the load bearing line and control line in close proximity arong all, or substantially all of, the length of each of these lines. This can lead to premature wear and breakage of the load bearing line as well as the control line due to frictional forces when they rub together.
As a consequence, there is a need for a helicopter line wear cover which is cheap to manufacture, simple to install which protects both the control line and load line from the elements and foreign material and which separates and protects the two lines from each other thereby avoiding wear on both lines.
SUMMARY OF THE INVENTION
A cover for protecting and separating a load bearing cable used for the lifting of a load suspended from a helicopter from a non-load bearing cable used for controlling the release of the load, includes a pair of elongated flat side members having first and second longitudinal edges, the members connected together along two lines of attachment longitudinally to form a first tube between the side members. A first attachment member.is attached to one of the side members adjacent the first edge and a second attachment member is attached to the other of the side members remote from the first edge. When a first and second attachment members are attached together, the side members form a second tube, parallel, with the first tube, and separated from the first tube by one of the side members. The diameters of the first and second tubes are large enough .to enable free longitudinal movement of each of the cables within respective first and second tubes when the first and second attachment members are attached together.
In a further embodiment of the invention; a cover for protecting and separating a load bearing cable used for the lifting of a load suspended from a helicopter from a non-bearing cable used for controlling the release of the load includes' an elongated cover member having first and second longitudinal edges, a first tube connected longitudinally to one side of the cover member, a first attachment member attached to onside of the cover member adjacent the first edge and a second attachment member attached to the other side of the covei member adjacent the second edge: A
connecting member connects the first end of the load bearing cable connected to the helicopter to the cover to support the cover relative to the first end. When the first and second attachment members are attached together, the cover member forms a second tube parallel with the first tube and the diameters bf the first and second tubes are large enough to enable free longitudinal movement of each of the cables with respective first and second tubes when the first and second attachment members are attached together.
In a further embodiment, a first securing element attaches the first attachment member and the side members together and a second securing element attaches the second attachment member and the side members together wherein the first and second securing elements define the first tube between the side members.
In a further embodiment, the first securing element attaches a first edge of the first attachment member to a first edge of the side members and the second securing element attaches a first edge of the second attachment member to the second edge of the side member with a third securing element attaching a second edge of the first attachment member to one of. the lines of attachment and a fourth securing element attaching a second edge of the second attachment member to the other of the lines of attachment.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective view of the helicopter line wear cover and top attachment member of the present invention.
Figure 2 is a cross-sectional view taken at line 2-2 of Figure 1.
Figure 3 is a top plan view of the helicopter line wear cover of Figure 1 laid flat.
Figure 4 is a cross-sectional view taken along line 4-4 of Figure 3.
Figure 5 is a cross-sectional view of the top attachment member taken along line 5-5 of Figure 1.
Figure 6 is a top plan view of the top attachment member of the subject invention, laid flat.
Figure 7 is a bottom plan view of the top attachment member of Figure 6.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Figure 1 depicts helicopter line cover 10 made up of elongated line cover 12 and top attachment member 14. Cover 12 is depicted encircling load line 16 which is a load bearing line attached to a load at its lower end (not shown) and attached to loop eye 18 at its upper end. Cover 12 also encircles control line 20 used to control release of the load which is attached at its lower end to the load release mechanism (not shown) for attaching the load to the load line 16 and at its upper end to a control system (not shown) accessible in the helicopter cockpit to enable manual release of the load from the helicopter on remote actuation of the release mechanism load through control line 20.
Referring to Figures 3 and 4, cover 12 is depicted in its open position, laid flat. Cover 12 is made up of upper side member 22 and lower side member 24 with member 22 overlying member 24. Cover 12 further includes loop fastener 26 comprising a first attachment member of a loop and hook fastening system attached to upper side member 22. Cover 12 further includes hook fastener 28 comprising a second attachment member; of a loop and hook fastening system attached to lower side member 24.
Loop fastener 26 is attached to cover 12 by means of outer sewn thread 30 adjacent first edge 32.
Thread 30 extends through both upper side member 22 and lower side member 24 to attach loop fastener 26 and upper side member 22 and lower side member 24 together adjacent edge 32.
Similarly, loop fastener 26 is attached to cover 12 by means of inner sewn thread 34 which extends through loop fastener 26, upper side member 22 and lower side member 24 to attach fastener 26 and members 22, 24 together at inner sewn thread 34. ;
Hook fastener 28 is attached to lower side member 24 adjacent edge 36 which is opposite to edge 32. Cover 12 extends longitudinally for a substantial length, substantially equal to the length of line 16 and 20.
Outer sewn thread 38 attaches hook fastener 28 to lower side member 24 adjacent edge 36 and also attached hook fastener 28 and upper and lower side members 22 and 24 together. Inner sewn thread 40 attaches the inner edge 42 of hook fastener 28 to lower side membei 24 and also attached hook fastener 28 arid upper and lower side members 22 and 24 together. Referring to figure 4, side members 22, 24 may be attached together at each end 66, 68 of hook fastener 28 and each end 70, 72 of loop fastener 26.
As best seen in Figure 4, the segment of upper side member 22 and lower side member 24 between threads 34 and 40 and that portion of ends 62; 64 between threads 34 and 40, are not fastened together. Threads 34 and 40 thereby form a first tube 42 longitudinally between members.22 and 24 and threads 34 and 40.
It can also be seen that loop fastener 26 is substantially wider than hook fastener 28; in order to provide adjustability when cover 12 is wrapped around line 16 and to permit attachment of top attachment member 14, as is discussed below.
Referring to Figure 2, cover 12 is depicted surrounding lines 16 and 20 as shown along line 2-2 of Figure 1. Cover.12 is looped in a circle with hook fastener 28 attached to loop fastener 26 to form a releasable attachment with cover 12 encircling lines 16 and 2f. When in this position, lower side member 24 forms a second tube 44 which encircles line 16. Figure 2 depicts control line 20 extending through first tube 42 and load line 16 extending through second tube 44. It can be seen that tube 42 is dimensioned large enough in diameter to permit line 20 to extend loosely within tube 42. As well, the user will select the appropriate position for attachment of loop fastener 26 to hook fastener 28 to provide loose fitting enclosure of load line 16 within second tube 44. 'This permits lines 16 and 20 to move longitudinally within tubes 42 and 44 while minimising the frictional forces on member 22 and 24 as lines 16 and 20 expand and contract within tubes 42 and 44. It can also be seen that member 24 separates line 16 from line 20 preventing frictional contact between lines 16 arid 20 thereby minimizing frictional damage to those lines as they vibrate within tubes 42 and 44.
Due to the fact that tubes 42 and 44 are loosely fit about liens 20 and 16 respectively, cover 12 must be supported at its upper end to prevent cover 12 from sliding downwardly through force of gravity impairing the ability of cover 12 to protect lines 16 and 20 and otherwise interfering with the lifting and release of the load.
Top attachment inembei 14 is designed to support cover 12 when wrapped around lines 16 and 20 to prevent cover l2 from moving downwardly along lines 16 and 20 when in use. Referring to: Figures 5, 6 and 7, top attachment member 14 is generally hourglass-shaped with wider portion 46 connected to narrower portion 48 be means of intermediate portion 50. Referring .
briefly to Figure 1, intermediate portion 50 is narrow in width to enable portion 50 to extend through Loop 18 to support portions 46 and 48.
Referring back to Figure 7 which depicts inner side 58 of member 14, wider portion 46 includes a pair of longitudinal spaced parallel loop portions 52 of a loop and hook fastening system along outer edges of wider portion 46. Narrower portion 48 includes a pair of longitudinally hook portions 54 of a loop and hook fastening system along outer edges of narrower portion 48.
As depicted in Figure 6; outer side 60 of member 14 includes a pair of elongated loop portions 56 of a loop and hook fastening system attached along outer edges of wider portion 46.
As can be seen best in Figure 5, when member 14 is attached to line cover l2 with portion 50 through eye 18 as depicted in Figure 1, wider portion 46 extends substantially about cover 12.
When intermediate portion 50 extends through loop eye 18, wider portion 46, and narrower portion 48 extend downwardly from loop eye 18. Wider portion 46 is positioned with hook portions 52 on the inner side 58 of member 14. Both of the parallel hook portions 52 are then attached to loop fastener 26 of cover 12. This rigidly attaches member 14 to cover 12 with loop portions 56 facing outwardly in parallel alignment adjacent one another.
Hook portion 54 attached to narrower portion 48 on the upper side 58 of member 14 may then be attached to loop portion 56 to secure wider portion 46 to narrower portion 48 thereby securing member 14 through loop. eye 18 further securing member 14 and cover 12 to loop eye ,18 at the upper portion of load line l6.
Users simply thread control line 20 through first tube 42 along substantially the entire length of control line 20. Cover 12 is then wrapped loosely about load line 16 and attached by means of fasteners 26 and 28, as depicted in Figure 2. Attachment member 14 is then extended through loop eye 18, preferably by threading narrower portion 48 through eye 18 so that intermediate portion 50 is positioned within eye 18. Wider portion 46 and narrower portion 48 are then ' positioned downwardly and member 14 is attached to cover 12 by means of hook portion 52 attached to loop fastener 26. Narrow portion 48 is then attached to wider portion 50 by connecting hook portions 54 to loop portions 56.
It will be readily appreciated that other means for attaching the various members can be employed, in addition to a loop and hook fastening system including a zipper system, hook and eye system, and other suitable means to releasably secure top attachment member 14 to line cover 12 and to attach cover 12 and member 14 to loop eye 18. It should also be appreciated that loop and hook fastening components of a loop and hook fastening system may be reversed from that as described herein without departing from the invention.
The present invention relates generally to helicopter line wear covers and more specifically to helicopter line wear covers protecting a load bearing line and a non-load bearing line and preventing tensile forces from causing wear on the lines.
BACKGROUND OF THE INVENTION
Helicopters are commonly employed in lifting, transporting and unloading of various cargo items suspended from a line or cable attached to the helicopter at one end and to the load to be lifted at the other. Helicopter load lines are usually comprised of two separate lines or cables, a load bearing line which supports the load and connects it to the helicopter, and a control line used to send control signals to the load latch permitting the helicopter operator, sitting in the helicopter cockpit, to :remotely unlatch a load release mechanism to release the load while the helicopter remains in the air:
In the past, helicopter load lines made of steel wire rope were employed as the load bearing line.
However, wire ropes are heavy and, as helicopters have limited lifting capacity, heavy wire ropes meant reduced loads could be carned by the helicopter. As a consequence, synthetic ropes have recently come into favour to replace wire ropes: Synthetic ropes have the advantage of being considerably lighter than wire ropes with equal carrying capacity, permitting heavier loads to be carried by the helicopter with a synthetic rope as compared to a wire rope: As a consequence, synthetic ropes have successfully replaced wire ropes in most helicopter load lifting operations employing a helicopter load line.
Synthetic ropes suffer from the disadvantage that they are much more prone to wear when contacted by other objects, such as the non-load bearing control wire positioned adjacent the load bearing line, as well as foreign objects on the ground, such as trees and the like which contact the synthetic load bearing line when the line is lowered to pick up a load, or to drop off a load. This is a particularly difficult problem in helicopter logging operations where helicopters are used to carry logs from a logging site to a collection site for transport to a lumber mill. The line often contacts trees and other foreign objects in raising and lowering a load for transport or to be dropped.
In order to protect synthetic load bearing lines from physical damage, covers have been employed to cover all, or a part of, the load bearing line preventing the line from contacting foreign objects thereby reducing the wear and tear on the line, lengthening its life and reducing the possibility of line breakage. These covers usually also cover the control line to protect it from damage and wear from the elements and from foreign matter, such as tree branches and the like.
When a cover is wrapped about the control line and the load line, both lines can be damaged when they rub together, due primarily to vibrational forces on the lines which causes wear on both lines as they contact one another. A cover maintains the load bearing line and control line in close proximity arong all, or substantially all of, the length of each of these lines. This can lead to premature wear and breakage of the load bearing line as well as the control line due to frictional forces when they rub together.
As a consequence, there is a need for a helicopter line wear cover which is cheap to manufacture, simple to install which protects both the control line and load line from the elements and foreign material and which separates and protects the two lines from each other thereby avoiding wear on both lines.
SUMMARY OF THE INVENTION
A cover for protecting and separating a load bearing cable used for the lifting of a load suspended from a helicopter from a non-load bearing cable used for controlling the release of the load, includes a pair of elongated flat side members having first and second longitudinal edges, the members connected together along two lines of attachment longitudinally to form a first tube between the side members. A first attachment member.is attached to one of the side members adjacent the first edge and a second attachment member is attached to the other of the side members remote from the first edge. When a first and second attachment members are attached together, the side members form a second tube, parallel, with the first tube, and separated from the first tube by one of the side members. The diameters of the first and second tubes are large enough .to enable free longitudinal movement of each of the cables within respective first and second tubes when the first and second attachment members are attached together.
In a further embodiment of the invention; a cover for protecting and separating a load bearing cable used for the lifting of a load suspended from a helicopter from a non-bearing cable used for controlling the release of the load includes' an elongated cover member having first and second longitudinal edges, a first tube connected longitudinally to one side of the cover member, a first attachment member attached to onside of the cover member adjacent the first edge and a second attachment member attached to the other side of the covei member adjacent the second edge: A
connecting member connects the first end of the load bearing cable connected to the helicopter to the cover to support the cover relative to the first end. When the first and second attachment members are attached together, the cover member forms a second tube parallel with the first tube and the diameters bf the first and second tubes are large enough to enable free longitudinal movement of each of the cables with respective first and second tubes when the first and second attachment members are attached together.
In a further embodiment, a first securing element attaches the first attachment member and the side members together and a second securing element attaches the second attachment member and the side members together wherein the first and second securing elements define the first tube between the side members.
In a further embodiment, the first securing element attaches a first edge of the first attachment member to a first edge of the side members and the second securing element attaches a first edge of the second attachment member to the second edge of the side member with a third securing element attaching a second edge of the first attachment member to one of. the lines of attachment and a fourth securing element attaching a second edge of the second attachment member to the other of the lines of attachment.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective view of the helicopter line wear cover and top attachment member of the present invention.
Figure 2 is a cross-sectional view taken at line 2-2 of Figure 1.
Figure 3 is a top plan view of the helicopter line wear cover of Figure 1 laid flat.
Figure 4 is a cross-sectional view taken along line 4-4 of Figure 3.
Figure 5 is a cross-sectional view of the top attachment member taken along line 5-5 of Figure 1.
Figure 6 is a top plan view of the top attachment member of the subject invention, laid flat.
Figure 7 is a bottom plan view of the top attachment member of Figure 6.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Figure 1 depicts helicopter line cover 10 made up of elongated line cover 12 and top attachment member 14. Cover 12 is depicted encircling load line 16 which is a load bearing line attached to a load at its lower end (not shown) and attached to loop eye 18 at its upper end. Cover 12 also encircles control line 20 used to control release of the load which is attached at its lower end to the load release mechanism (not shown) for attaching the load to the load line 16 and at its upper end to a control system (not shown) accessible in the helicopter cockpit to enable manual release of the load from the helicopter on remote actuation of the release mechanism load through control line 20.
Referring to Figures 3 and 4, cover 12 is depicted in its open position, laid flat. Cover 12 is made up of upper side member 22 and lower side member 24 with member 22 overlying member 24. Cover 12 further includes loop fastener 26 comprising a first attachment member of a loop and hook fastening system attached to upper side member 22. Cover 12 further includes hook fastener 28 comprising a second attachment member; of a loop and hook fastening system attached to lower side member 24.
Loop fastener 26 is attached to cover 12 by means of outer sewn thread 30 adjacent first edge 32.
Thread 30 extends through both upper side member 22 and lower side member 24 to attach loop fastener 26 and upper side member 22 and lower side member 24 together adjacent edge 32.
Similarly, loop fastener 26 is attached to cover 12 by means of inner sewn thread 34 which extends through loop fastener 26, upper side member 22 and lower side member 24 to attach fastener 26 and members 22, 24 together at inner sewn thread 34. ;
Hook fastener 28 is attached to lower side member 24 adjacent edge 36 which is opposite to edge 32. Cover 12 extends longitudinally for a substantial length, substantially equal to the length of line 16 and 20.
Outer sewn thread 38 attaches hook fastener 28 to lower side member 24 adjacent edge 36 and also attached hook fastener 28 and upper and lower side members 22 and 24 together. Inner sewn thread 40 attaches the inner edge 42 of hook fastener 28 to lower side membei 24 and also attached hook fastener 28 arid upper and lower side members 22 and 24 together. Referring to figure 4, side members 22, 24 may be attached together at each end 66, 68 of hook fastener 28 and each end 70, 72 of loop fastener 26.
As best seen in Figure 4, the segment of upper side member 22 and lower side member 24 between threads 34 and 40 and that portion of ends 62; 64 between threads 34 and 40, are not fastened together. Threads 34 and 40 thereby form a first tube 42 longitudinally between members.22 and 24 and threads 34 and 40.
It can also be seen that loop fastener 26 is substantially wider than hook fastener 28; in order to provide adjustability when cover 12 is wrapped around line 16 and to permit attachment of top attachment member 14, as is discussed below.
Referring to Figure 2, cover 12 is depicted surrounding lines 16 and 20 as shown along line 2-2 of Figure 1. Cover.12 is looped in a circle with hook fastener 28 attached to loop fastener 26 to form a releasable attachment with cover 12 encircling lines 16 and 2f. When in this position, lower side member 24 forms a second tube 44 which encircles line 16. Figure 2 depicts control line 20 extending through first tube 42 and load line 16 extending through second tube 44. It can be seen that tube 42 is dimensioned large enough in diameter to permit line 20 to extend loosely within tube 42. As well, the user will select the appropriate position for attachment of loop fastener 26 to hook fastener 28 to provide loose fitting enclosure of load line 16 within second tube 44. 'This permits lines 16 and 20 to move longitudinally within tubes 42 and 44 while minimising the frictional forces on member 22 and 24 as lines 16 and 20 expand and contract within tubes 42 and 44. It can also be seen that member 24 separates line 16 from line 20 preventing frictional contact between lines 16 arid 20 thereby minimizing frictional damage to those lines as they vibrate within tubes 42 and 44.
Due to the fact that tubes 42 and 44 are loosely fit about liens 20 and 16 respectively, cover 12 must be supported at its upper end to prevent cover 12 from sliding downwardly through force of gravity impairing the ability of cover 12 to protect lines 16 and 20 and otherwise interfering with the lifting and release of the load.
Top attachment inembei 14 is designed to support cover 12 when wrapped around lines 16 and 20 to prevent cover l2 from moving downwardly along lines 16 and 20 when in use. Referring to: Figures 5, 6 and 7, top attachment member 14 is generally hourglass-shaped with wider portion 46 connected to narrower portion 48 be means of intermediate portion 50. Referring .
briefly to Figure 1, intermediate portion 50 is narrow in width to enable portion 50 to extend through Loop 18 to support portions 46 and 48.
Referring back to Figure 7 which depicts inner side 58 of member 14, wider portion 46 includes a pair of longitudinal spaced parallel loop portions 52 of a loop and hook fastening system along outer edges of wider portion 46. Narrower portion 48 includes a pair of longitudinally hook portions 54 of a loop and hook fastening system along outer edges of narrower portion 48.
As depicted in Figure 6; outer side 60 of member 14 includes a pair of elongated loop portions 56 of a loop and hook fastening system attached along outer edges of wider portion 46.
As can be seen best in Figure 5, when member 14 is attached to line cover l2 with portion 50 through eye 18 as depicted in Figure 1, wider portion 46 extends substantially about cover 12.
When intermediate portion 50 extends through loop eye 18, wider portion 46, and narrower portion 48 extend downwardly from loop eye 18. Wider portion 46 is positioned with hook portions 52 on the inner side 58 of member 14. Both of the parallel hook portions 52 are then attached to loop fastener 26 of cover 12. This rigidly attaches member 14 to cover 12 with loop portions 56 facing outwardly in parallel alignment adjacent one another.
Hook portion 54 attached to narrower portion 48 on the upper side 58 of member 14 may then be attached to loop portion 56 to secure wider portion 46 to narrower portion 48 thereby securing member 14 through loop. eye 18 further securing member 14 and cover 12 to loop eye ,18 at the upper portion of load line l6.
Users simply thread control line 20 through first tube 42 along substantially the entire length of control line 20. Cover 12 is then wrapped loosely about load line 16 and attached by means of fasteners 26 and 28, as depicted in Figure 2. Attachment member 14 is then extended through loop eye 18, preferably by threading narrower portion 48 through eye 18 so that intermediate portion 50 is positioned within eye 18. Wider portion 46 and narrower portion 48 are then ' positioned downwardly and member 14 is attached to cover 12 by means of hook portion 52 attached to loop fastener 26. Narrow portion 48 is then attached to wider portion 50 by connecting hook portions 54 to loop portions 56.
It will be readily appreciated that other means for attaching the various members can be employed, in addition to a loop and hook fastening system including a zipper system, hook and eye system, and other suitable means to releasably secure top attachment member 14 to line cover 12 and to attach cover 12 and member 14 to loop eye 18. It should also be appreciated that loop and hook fastening components of a loop and hook fastening system may be reversed from that as described herein without departing from the invention.
Claims (24)
1. A cover for protecting and separating a load bearing cable used for the lifting of a load suspended from a helicopter from a non-load bearing cable used for controlling the release of the load, comprising:
(i) a pair of elongated flat side members having first and second longitudinal edges, the members connected together along two lines of attachment longitudinally to form a first tube between the side members;
(ii) a first attachment member attached to one of the side members adjacent the first edge; and (iii) a second attachment member attached to the other of the side members remote from the first edge;
wherein:
(A) when the first and second attachment members are attached together the side members form a second tube parallel with the first tube and separated from the first tube by one of the side members; and (B) the diameters of the first and second tubes are large enough to enable free longitudinal movement of each of the cables within respective first and second tubes when the first and second attachment members are attached together.
(i) a pair of elongated flat side members having first and second longitudinal edges, the members connected together along two lines of attachment longitudinally to form a first tube between the side members;
(ii) a first attachment member attached to one of the side members adjacent the first edge; and (iii) a second attachment member attached to the other of the side members remote from the first edge;
wherein:
(A) when the first and second attachment members are attached together the side members form a second tube parallel with the first tube and separated from the first tube by one of the side members; and (B) the diameters of the first and second tubes are large enough to enable free longitudinal movement of each of the cables within respective first and second tubes when the first and second attachment members are attached together.
2. The cover as described in claim 1 wherein one of the lines of attachment of the side members is adjacent the first edge and the other of the lines of attachment of the side members is in an intermediate region between the first and second edges.
3. The cover as described in claim 1 wherein one of the lines of attachment of the side members is adjacent the first edge.
4. The cover as described in claim 1 wherein one of the lines of attachment of the side members is in an intermediate region between the first and second edges.
5. The cover as described in claim 1 wherein one of the lines of attachment of the side members is adjacent the first edge and the other of the lines of attachment of the side members is adjacent the second edge.
6. The cover as described in claim 1 further comprising a cover support connected to the cover and connectable to a first end of the load bearing cable connected to the helicopter to support the cover relative to the first end.
7. The cover as described in claim 2 wherein the second attachment member extends in width between the intermediate region and the second edge.
8. The cover as described in claim 4 wherein the second attachment member extends in width between the intermediate region and the second edge.
9. The cover as described in claim 1 further comprising a first securing element attaching the first attachment member and the side members together and a second securing element attaching the second attachment member and the side members together and wherein the first and second securing elements define the first tube between the side members.
10. The cover as described in claim 9 wherein the first securing element attaches a first edge of the side members together with the first attachment member.
11. The cover as described in claim 10 wherein the second securing element attaches the second edge of the side members together with the second attachment member.
12. The cover as described in claim 9 wherein the first securing element attaches a first edge of the first attachment member to a first edge of the side members and the second securing element attaches a first edge of the second attachment member to the second edge of the side member and further comprising a third securing element attaching a second edge of the first attachment member to one of the lines of attachment and a fourth securing element attaching a second edge of the second attachment member to the other of the lines of attachment.
13. The cover as described in claim 12 wherein at least one of the lines of attachment is in an intermediate region between the first and second edges.
14. The cover as described in claim 1 wherein the first edges of the side members are connected together.
15. The cover as described in claim 1 wherein the first and second attachment members are attached to the same side member.
16. The cover as described in claim 1 wherein the first and second attachment members are attached to different side members.
17. The cover as described in claim 1 wherein the first and second attachment members are releasably attachable together.
18. The cover as described in claim 1 wherein the first and second attachment members comprise a zipper.
19. The cover as described in claim 1 wherein the first and second attachment members comprise a hook and loop fastener system.
20. A cover for protecting and separating a load bearing cable used for the lifting of a load suspended from a helicopter from a non-load bearing cable used for controlling the release of the load, comprising:
(i) an elongated cover member having first and second longitudinal edges;
(ii) a first tube connected longitudinally to one side of the cover member;
(iii) a first attachment member attached to one side of the cover member adjacent the first edge;
(iv) a second attachment member attached to the other side of the cover member adjacent the second edge; and (v) connecting member connects the first end of the load bearing cable connected to the helicopter to the cover to support the cover relative to the first end.
wherein:
(A) when the first and second attachment members are attached together the cover member forms a second tube parallel with the first tube; and (B) the diameters of the first and second tubes are large enough to enable free longitudinal movement of each of the cable within respective first and second tubes when the first and second attachment members are attached together.
(i) an elongated cover member having first and second longitudinal edges;
(ii) a first tube connected longitudinally to one side of the cover member;
(iii) a first attachment member attached to one side of the cover member adjacent the first edge;
(iv) a second attachment member attached to the other side of the cover member adjacent the second edge; and (v) connecting member connects the first end of the load bearing cable connected to the helicopter to the cover to support the cover relative to the first end.
wherein:
(A) when the first and second attachment members are attached together the cover member forms a second tube parallel with the first tube; and (B) the diameters of the first and second tubes are large enough to enable free longitudinal movement of each of the cable within respective first and second tubes when the first and second attachment members are attached together.
21. The cover as described in claim 20 wherein the first and second attachment members are attached to different side members.
22. The cover as described in claim 20 wherein the first and second attachment members are releasably attachable together.
23. The cover as described in claim 20 wherein the first and second attachment members comprise a zipper.
24. The cover as described in claim 20 wherein the first and second attachment members comprise a hook and loop fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2370897 CA2370897A1 (en) | 2002-02-08 | 2002-02-08 | Helicopter line wear cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2370897 CA2370897A1 (en) | 2002-02-08 | 2002-02-08 | Helicopter line wear cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2370897A1 true CA2370897A1 (en) | 2003-08-08 |
Family
ID=27626617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2370897 Abandoned CA2370897A1 (en) | 2002-02-08 | 2002-02-08 | Helicopter line wear cover |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2370897A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3915874A1 (en) | 2020-05-26 | 2021-12-01 | Leonardo S.p.a. | Aircraft capable of hovering and method for transporting a load suspended from such aircraft |
-
2002
- 2002-02-08 CA CA 2370897 patent/CA2370897A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3915874A1 (en) | 2020-05-26 | 2021-12-01 | Leonardo S.p.a. | Aircraft capable of hovering and method for transporting a load suspended from such aircraft |
| EP3915873A1 (en) * | 2020-05-26 | 2021-12-01 | LEONARDO S.p.A. | Aircraft capable of hovering and method for transporting a load suspended for such aircraft |
| WO2021240405A1 (en) | 2020-05-26 | 2021-12-02 | Leonardo S.P.A. | Aircraft capable of hovering and method for transporting a load suspended from such aircraft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |