US20080066241A1 - Overhead self-levelling lift system for transporting payloads in dynamic settings and use thereof - Google Patents
Overhead self-levelling lift system for transporting payloads in dynamic settings and use thereof Download PDFInfo
- Publication number
- US20080066241A1 US20080066241A1 US11/779,698 US77969807A US2008066241A1 US 20080066241 A1 US20080066241 A1 US 20080066241A1 US 77969807 A US77969807 A US 77969807A US 2008066241 A1 US2008066241 A1 US 2008066241A1
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- US
- United States
- Prior art keywords
- car
- superstructure
- rails
- transporter
- carriage
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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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B3/00—Elevated railway systems with suspended vehicles
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/24—Bridges or similar structures, based on land or on a fixed structure and designed to give access to ships or other floating structures
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G2220/00—Adaptations of particular transporting means
- A61G2220/16—Buses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G3/00—Ambulance aspects of vehicles; Vehicles with special provisions for transporting patients or disabled persons, or their personal conveyances, e.g. for facilitating access of, or for loading, wheelchairs
- A61G3/02—Loading or unloading personal conveyances; Facilitating access of patients or disabled persons to, or exit from, vehicles
- A61G3/06—Transfer using ramps, lifts or the like
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
- A61G7/104—Devices carried or supported by
- A61G7/1042—Rail systems
Abstract
A self-levelling lift system is provided, to transport payloads in dynamic settings. The lift comprises a superstructure, first and second support members, a carriage and a drive. The superstructure has rails along which the carriage moves. The support members allow for the superstructure to change angle in response to a changing relationship between a first surface and a second surface, such as the shore and a boat. Also provided is a use of the system for concurrently transporting a payload and allowing for pedestrian traffic.
Description
- This application claims the benefit of U.S.
provisional application 60/853,323 filed Sep. 15, 2006, the disclosure of which is incorporated herein by reference. - The present disclosure relates to a self-levelling lift system for use in settings where the slope of the supporting structures undergoes change over time. More specifically, it relates to an overhead, mechanized gangway lift system for wheelchairs.
- In recent years there has been the development of sporting equipment for the disabled, including modifications to existing sports equipment. This has allowed many people to participate in sports that they could previously not consider because of handicaps including paraplegia and quadriplegia. At the same time, advancements have been made in mobility aids, including, for example, lifts for use in the home, and for buses.
- For example, US patent application publication number 20060117984 discloses a stair-case lift for transporting a disabled person between floors. It includes at least one guide rail extending substantially parallel to a stairway, a moveable carrier frame suspended from the guide rail means including carrier support means, and drive means of a rack and pinion type drive for displacement of the carrier frame along the guide rail.
- Similarly, U.S. Pat. No. 5,269,227 discloses a portable system for aiding persons in ascending or descending stairways that comprises either a motorized portable upper body support assembly or a motorized vehicle for detachably drivingly engaging elongate tracks associated with different stairways. The detachability of the motorized unit from the track, combined with its portability, enables the user to employ the same portable unit interchangeably with any stairway in any location so long as the stairway is equipped with a mating track, thereby enabling an unlimited number of stairways in private or public buildings to be adapted inexpensively for use by physically impaired persons. The portable motorized unit is readily able to adapt to stairways of different slopes and configurations, and to tracks on either the right-hand or left-hand side of the stairway, so as to maximize the versatility of the portable unit for use with virtually any track-equipped stairway.
- A monorail access system is disclosed in U.S. Pat. No. 5,709,154. This monorail access system makes a boat handicapped accessible. More specifically, a battery powered chair assembly is suspended from an overhead monorail track system, whereby by activating a control mechanism an individual may move anywhere in the boat where the track is installed. Once an individual is seated in the chair assembly, the monorail system allows the individual to travel to the cabins, flying bridge, downstairs to the galley, outside to the rear deck for sunbathing or fishing or over the side to a dock.
- While the foregoing allow increased mobility for physically handicapped people, they are only useful in static settings. In other words, a track or railing must be in place and a moveable assembly mounted on the track. Unfortunately, such systems are not useful for dynamic settings, such as, for example, gangways onto boats, wharves and planes. Of these, gangways onto wharves provide the greatest challenge as the level of the gangway is dependent upon the water level, which in an ocean environment, is constantly changing. Gangways have been developed to accommodate changing water levels.
- For example, U.S. Pat. No. 5,950,267 discloses a portable gangway with levelling stairs. It includes first and second longitudinal frame members each having an elongate housing with a wall structure surrounding an interior thereof and a pair of longitudinal elongate rails extending through a length of the housing in parallel relation to each other and terminating at opposite distal ends; the pair of rails including a fixed rail and a moving rail. A series of step members, each including top bottom step surfaces, are rotatably supported between the first and second longitudinal frame members in pivotal interconnection with the pair of rails of each frame member. Mounting platforms attach to the distal ends of the rails and enable one end of the gangway to move through an arc of movement relative to an opposite fixedly mounted end, thereby causing movement of the moving rails relative to the fixed rails, within each frame member, resulting in synchronized rotation of the step members so that the top and bottom step surfaces of the step members remain horizontal and level upon a change in an upward or downward angle of the gangway. Handrails are removably attachable to the gangway along the outboard sides of the longitudinal frame member and include articulating joints to permit angular movement of the handrails with the gangway.
- U.S. Pat. No. 5,657,832 discloses a stairway for connecting a floating dock or boat to a stationary dock or land. The stairway moves with the moving member and includes stringers connected to the hand rails by pickets and step supporting pivot arms connected to adjustment arms to form a compound parallelogram linkage in which the picket members and the pivot arms remain vertical during movement of the stairway whereby the steps remain horizontal and the hand rails remain parallel to the stringer members during such movement. Similarly, U.S. Pat. No. 4,333,196 discloses a gangway that is has steps that remain horizontal whatever the inclination of the gangway. This is accomplished by using longitudinal side-members and a girder that form a parallelogram articulated about four horizontal axles, two of which are pivotally mounted on the structure supporting the stairway. Thus,an articulated parallelogram is produced. While the foregoing gangways allow for changing levels, they are often far too steep for wheelchairs.
- Most gangways far exceed the maximum 1:12 (40) pitch recommended by the Americans with Disabilities Act Accessibility Guidelines (ADAAG) of the U.S. Architectural and Transportation Barriers Compliance Board (ATBCB), even at high tide. Because of the changing ocean tides, some gangways can range in pitch from 1° to 45° making it impossible for some people to independently access the wharf. ADAAG regulation 4.8.2 requires that the maximum rise for any run in a ramp be no greater than 30°. By default this precludes all conventional marina gangways from use by wheelchair-bound patrons.
- One system, Ramp Rider™ utilizes gangway technology and rail technology to arrive at a system for wheelchairs to be transported between land and a boat or float. The wheelchair is carried in a car that has four tires (two in the front and two in the back) for running on two rails that form the base of a parallelogram. The relationship between the front and back wheels and the rails ensures that the car remains horizontal. It is a stand- alone system and cannot be integrated into an existing gangway. This requires that two gangways and two access points be available in order to move both wheelchairs and foot traffic.
- One cannot simply combine existing wheelchair lift systems that are suitable for static settings with existing gangway designs that are suitable for dynamic settings and arrive at a system that will allow safe access to, for example, boats, floats and planes, while still permitting regular foot traffic. It is an object to overcome the deficiencies in the prior art.
- The present embodiment provides a self-levelling lift for transporting payloads in dynamic settings, in other words, where the slope of the supporting structures are required to undergo change. If a gangway is in place, the system can rely on the existing support and anchor members, assuming that they are capable of supporting the increased weight. By suspending the travelling car over an existing gangway, the required space at the foreshore and landing float is virtually zero. Further, regular foot traffic on the gangway is not impeded by the system. Additionally, the car can be folded out of the way of the gangway, when not in use.
- More specifically, what is provided is a self-levelling lift system, to transport payloads in dynamic settings. The lift comprises: a superstructure having a first end, a second end and a mount extending between the first end and the second end; first and second support members located proximal to the first end and the second end of the superstructure, wherein the first support members are in moveable contact at a distal end with a first surface, and the second members are affixed at a distal end to a second surface and are in pivotal engagement with a second surface at a distal end; a carriage in moveable engagement with the mount; and a drive to move the car between the first and the second end.
- In one aspect the mount comprises two rails.
- In another aspect the carriage comprises a car, a framework, and a transporter, wherein the transporter has wheels for engaging the rails of the mount.
- In another aspect the carriage further comprises a hydraulic ram mounted between the framework and the transporter, to assist in maintaining the car level.
- In another aspect the car is comprised of two doors, two sides, hinges and a platform, the doors rotatably attached to the platform by the hinges.
- In another aspect the drive is a cable drive.
- In another aspect the cable drive comprises a motor, a worm gear, a winch and a cable.
- In another aspect the system further comprises a brake.
- In another aspect the motor, worm gear and winch are mounted on the transporter.
- In another aspect the system further comprises controls in electronic communication with the cable drive and located within the car.
- In another aspect the system further comprises door hydraulic rams to assist in opening and closing the doors.
- In another aspect the system further comprises retractor hydraulic rams to assist in folding of the car.
- In another aspect the framework further comprises a telescoping arm for raising and lowering the car.
- In another aspect, the superstructure defines an A-frame comprising two rails that function additionally as girders and trusses extending there between.
- In another aspect the system further comprises a gangway located below the superstructure.
- In another aspect, the mount comprises two rails; the carriage comprises a framework, a transporter, wherein the transporter has wheels for engaging the rails and a car, wherein the car is comprised of two doors, two sides, hinges and a platform, the doors rotatably attached to the platform by the hinges; and the drive is a cable drive.
- In another aspect the system further comprises an anchor block.
- Also provided is a use of a system comprising:
-
- a superstructure comprising a first end, a second end and two rails extending between the first end and the second end;
- first and second support members located proximal to the first end and the second end of the superstructure, wherein the first support members are in moveable contact at a distal end with a first surface, and the second members are affixed at a distal end to a second surface and are in pivotal engagement with a second surface at a distal end;
- a carriage in moveable engagement with the mount, the carriage comprising a car, a framework, and a transporter, wherein the transporter has wheels for engaging the rails; and
- a drive to move the car between the first and the second end, to transport a payload between a static surface and a non-static surface.
- In one aspect of the use of the system, the car is retracted and folded.
- Also provided is a use of a system, the system comprising:
-
- a superstructure comprising a first end, a second end and two rails extending between the first end and the second end; first and second support members located proximal to the first end and the second end of the superstructure, wherein the first support members are in moveable contact at a distal end with a first surface, and the second members are affixed at a distal end to a second surface and are in pivotal engagement with a second surface at a distal end;
- a carriage in moveable engagement with the mount, the carriage comprising a car, a framework, and a transporter, wherein the transporter has wheels for engaging the rails;
- a drive to move the car between the first and the second end; and
- a gangway below the superstructure, to concurrently transport a payload in the car and allow pedestrian traffic on the gangway.
- In another aspect, said use is remotely controlled by an operator.
- In another aspect the payload is cargo.
- In one aspect of the use of the system the car is retracted and folded.
-
FIG. 1 is a perspective view of an overhead self-levelling lift system in accordance with an embodiment. -
FIG. 2 is a perspective view showing the superstructure and supporting framework of the overhead self-levelling system ofFIG. 1 . -
FIG. 3 is a perspective view showing the carriage on the superstructure of the overhead self-levelling system ofFIG. 1 . -
FIG. 4 is an exploded perspective view of the carriage ofFIG. 3 . -
FIG. 5 is a perspective view showing the cable drive of the overhead self-levelling system ofFIG. 1 . -
FIG. 6 is a perspective view of an overhead self-levelling lift system mounted overtop of a gangway in accordance with an embodiment. -
FIG. 7 is a perspective view showing the carriage ofFIG. 3 in the partially folded position. - An overhead self-levelling lift system, generally referred to as 10 is shown in
FIG. 1 . Thelift system 10 has a superstructure, generally referred to as 12, as shown inFIG. 2 . Thesuperstructure 12 has twogirders 14 extending along the length of the superstructure and trusses 16 therebetween to form an A-frame-type structure. In one embodiment, thegirders 14 functional so as rails 18. Alternatively, the superstructure supports tworails 18 that are affixed to thegirders 14 and extend the length of thesuperstructure 12. Therails 18 function as mounts. - The superstructure is pivotally mounted proximate to a
first end 20 and asecond end 22 to a first and second supportingframe work support members header 32. Eachsupport member 28 of the first supportingframework 24 is terminated with aroller 34 at adistal end 36 relative to theheader 32. Eachsupport member 30 of the second supportingframework 26 is terminated with apivot mount 38 at or near aproximal end 40 relative to theheader 32, for pivotal engagement with thegirders 14. Thedistal end 42 of eachsupport member 30 is affixed to ananchor block 44 by abottom flange plate 46. Theanchor block 44 is suitably affixed to the shore and is also the attachment point for agangway 48. The gangway can be any design of gangway, as the overhead self-levellinglift system 10 can be manufactured to the appropriate dimensions. - A carriage, generally referred to as 50 is rollably suspended from the
rails 18 as shown inFIG. 3 . Thecarriage 50, as shown inFIG. 4 hascar 52 and aframework 54 that connects thecar 52 to atransporter 56, which is located above thecar 52. Thecar 52 has aplatform 58, aproximate side 60, an opposingside 62, aback door 64 and afront door 66. Theproximate side 60 assists in supporting the remainder of thecar 52 and is telescopically attached to theframework 54 by atelescoping arm 68, which forms part of theframework 54. Thetelescoping arm 68 allows thecar 52 to be raised and lowered. - The opposing
side 62 consists of two safety rails that are pivotally mounted on theproximate side 60. Thedoors platform 58 by hinges 63. Thedoors hydraulic rams 70 are located between theplatform 58 and the back andfront doors doors hydraulic rams 72 are located between theplatform 58 and theframework 54 to assist in folding thecar 52 by raising theplatform 58 into a vertical position. A fifthhydraulic ram 74 is located between theframework 54 and thetransporter 56, and aids in maintaining theplatform 54 level. Thetransporter 56 hastrucks 76 mounted on theundersides 78 of thetransporter 56 such that the wheels 8o of thetrucks 76 rollably suspend thecarriage 50 from therails 18. Thetransporter 56 additionally has Teflon sides 57. - A cable drive, generally referred to 82, as shown in
FIG. 5 is connected to thecarriage 50. Thecable drive 82 has acable 84, awinch 86, amotor 88 and a worm drive go. Additionally, abrake 92 is integrated into thecable drive 82.Controls 94 are in electronic communication with thebrake 92 and thecable drive 82 and are housed within thecarriage 50, more specifically in thetransporter 56, as shown inFIG. 4 . Apan 59 covers thecable drive 82. The worm drive go transfers power from themotor 88 to thewinch 86 and thewinch 86 advances thecable 84 to move thecarriage 50 along therails 18. The direction that the cable 8o moves determines the direction that thecarriage 50 moves. - In use, the overhead self-levelling
lift system 10 can transport cargo, people in wheelchairs, powerchairs and scooters, able-bodied people and essentially any payload that weighs less than about 3000 pounds, in dynamic settings, such between a static surface, for example a runway, or the shore and a non-static surface for example a plane deck, a float deck or a ship. At thefirst end 20 theappropriate door door platform 58. Thedoor brake 92 is released and thecable drive 82 is actuated to move thecarriage 50 along therails 18. Once thecarriage 50 reaches thesecond end 22, thebrake 92 is engaged, theappropriate door FIG. 6 , the overhead self-levellinglift system 10 can concurrently move pedestrian traffic along the gangway 48 and a payload in thecar 52. - The
car 52 can be folded away when not in use. As shown inFIG. 7 , the opposingside 62 is pivoted upward, the front andback doors platform 58 and the front andback doors hydraulic rams 72 and thecar 52 is raised by retracting thetelescoping arm 68. - The foregoing is a description of an embodiment of the invention. As would be known to one skilled in the art, variations in the design that do not alter the scope of the invention are contemplated. For example, one rail could be used rather than two, and a cable system that is suspended by pulleys could replace the rail system. The girders and trusses could be replaced by any supporting superstructure, including joists and rafters, for example. The rollers terminating the columns of the first supporting framework could be replaced with a single roller or with any means to permit horizontal movement between the column and the float, for example, but not limited to, a slide mechanism. Similarly, the columns can be affixed to an existing gangway and utilize the system that allows the gangway to move across the float. The anchor block could be, for example, but not limited to a steel framework, or a concrete block. The cable drive can be replaced with any drive as would be known to one skilled in the art, including for example, but not limited to a chain drive or a belt drive. Similarly the wheels of the trucks can replaced with belts that move along cogs. The controls can be located on the gangway as an alternative to having them in the carriage, or can be both in the carriage and at each end of the gangway, for example. This would permit remote operation of the system by an operator. The car can be, for example, but not limited to, a platform, a box, or a specialized structure for carrying cargo.
Claims (33)
1. A self-levelling lift system, to transport payloads in dynamic settings, said lift comprising:
a superstructure having a first end, a second end and a mount extending between said first end and said second end;
first and second support members located proximal to said first end and said second end of said superstructure, wherein said first support members are in moveable contact at a distal end with a first surface, and said second members are affixed at a distal end to a second surface and are in pivotal engagement with a second surface at a distal end;
a carriage in moveable engagement with said mount; and
a drive to move said car between said first and said second end.
2. The system of claim 1 wherein said mount comprises two rails.
3. The system of claim 2 wherein said carriage comprises a car, a framework, and a transporter, wherein said transporter has wheels for engaging the rails of the mount.
4. The system of claim 3 wherein said carriage further comprises a hydraulic ram mounted between the framework and the transporter, to assist in maintaining the car level.
5. The system of claim 4 wherein said car is comprised of two doors, two sides, hinges and a platform, said doors rotatably attached to said platform by said hinges.
6. The system of claim 3 wherein said drive is a cable drive.
7. The system of claim 6 wherein said cable drive comprises a motor, a worm gear, a winch and a cable.
8. The system of claim 7 further comprising a brake.
9. The system of claim 8 wherein said motor, worm gear and winch are mounted on said transporter.
10. The system of claim 9 further comprising controls in electronic communication with said cable drive and located within said car.
11. The system of claim 5 , further comprising door hydraulic rams to assist in opening and closing said doors.
12. The system of claim 11 further comprising retractor hydraulic rams to assist in folding of the car.
13. The system of claim 12 further wherein said framework further comprises a telescoping arm for raising and lowering the car.
14. The system of claim 13 , wherein said superstructure defines an A-frame comprising two rails that function additionally as girders and trusses extending therebetween.
15. The system of claim 1 further comprising a gangway located below said superstructure.
16. The system of claim 15 wherein:
said mount comprises two rails;
said carriage comprises a framework, a transporter, wherein said transporter has wheels for engaging the rails and a car, wherein said car is comprised of two doors, two sides, hinges and a platform, said doors rotatably attached to said platform by said hinges; and
said drive is a cable drive.
17. The system of claim 16 wherein said carriage further comprises a hydraulic ram mounted between the framework and the transporter, to assist in maintaining the car level.
18. The system of claim 17 wherein said cable drive comprises a motor, a worm gear, a winch and a cable.
19. The system of claim 18 further comprising a brake.
20. The system of claim 19 wherein said motor, worm gear and winch are mounted on said transporter.
21. The system of claim 20 further comprising controls in electronic communication with said cable drive and located within said car.
22. The system of claim 21 , further comprising door hydraulic rams to assist in opening and closing said doors.
23. The system of claim 22 further comprising retractor hydraulic rams to assist in folding of the car.
24. The system of claim 23 further wherein said framework further comprises a telescoping arm for raising and lowering the car.
25. The system of claim 24 , wherein said superstructure defines an A-frame comprising two rails that function additionally as girders and trusses extending therebetween.
26. The system of claim 25 , wherein said superstructure defines an A-frame comprising two rails that function additionally as girders and trusses extending therebetween.
27. The system of claim 26 further comprising an anchor block.
28. A use of a system comprising:
a superstructure comprising a first end, a second end and two rails extending between said first end and said second end;
first and second support members located proximal to said first end and said second end of said superstructure, wherein said first support members are in moveable contact at a distal end with a first surface, and said second members are affixed at a distal end to a second surface and are in pivotal engagement with a second surface at a distal end;
a carriage in moveable engagement with said mount, said carriage comprising a car, a framework, and a transporter, wherein said transporter has wheels for engaging the rails; and
a drive to move said car between said first and said second end, to transport a payload between a static surface and a non-static surface.
29. The use of claim 28 further comprising retracting and folding said car.
30. A use of a system, said system comprising:
a superstructure comprising a first end, a second end and two rails extending between said first end and said second end;
first and second support members located proximal to said first end and said second end of said superstructure, wherein said first support members are in moveable contact at a distal end with a first surface, and said second members are affixed at a distal end to a second surface and are in pivotal engagement with a second surface at a distal end;
a carriage in moveable engagement with said mount, said carriage comprising a car, a framework, and a transporter, wherein said transporter has wheels for engaging the rails;
a drive to move said car between said first and said second end; and
a gangway below said superstructure, to concurrently transport a payload in said car and allow pedestrian traffic on said gangway.
31. The use of claim 30 wherein said drive is controlled remotely by an operator.
32. The use of claim 31 wherein said payload is cargo.
33. The use of claim 30 , further comprising retracting and folding said car.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CA002560033A CA2560033A1 (en) | 2006-09-15 | 2006-09-15 | Overhead self-levelling lift system for transporting payloads in dynamic settings and use thereof |
CA2,560,033 | 2006-09-15 |
Publications (1)
Publication Number | Publication Date |
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US20080066241A1 true US20080066241A1 (en) | 2008-03-20 |
Family
ID=39181997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/779,698 Abandoned US20080066241A1 (en) | 2006-09-15 | 2007-07-18 | Overhead self-levelling lift system for transporting payloads in dynamic settings and use thereof |
Country Status (2)
Country | Link |
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US (1) | US20080066241A1 (en) |
CA (1) | CA2560033A1 (en) |
Cited By (6)
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US7618223B1 (en) * | 2008-04-30 | 2009-11-17 | Handicaptain Brands, LLC | Dock to boat transfer aid for handicapped boaters |
US20090288578A1 (en) * | 2008-05-23 | 2009-11-26 | Alan Hepner | Carriage traction vehicle |
US20110061184A1 (en) * | 2009-09-14 | 2011-03-17 | Kimener R Peter | Repositionable pit seal |
CN104709296A (en) * | 2015-02-28 | 2015-06-17 | 徐州徐工随车起重机有限公司 | Expandable and foldable work platform |
CN109162201A (en) * | 2018-09-25 | 2019-01-08 | 中铁二局第五工程有限公司 | A kind of novel chain type track installation vehicle |
US11117044B1 (en) * | 2020-07-27 | 2021-09-14 | Wang-Chuan Chen | Ramp system for sports |
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CN107344556B (en) * | 2017-06-20 | 2018-08-24 | 中建空列(北京)科技有限公司 | Suspension cable formula track girder and suspension cable formula sky iron traffic system |
CN112942110B (en) * | 2021-01-21 | 2022-10-04 | 北京市政路桥股份有限公司 | Convenient and fast movable type bridge centralized drainage pipeline installation operation platform |
CN113322817A (en) * | 2021-05-25 | 2021-08-31 | 豫新华通路桥集团有限公司 | Bridge construction supporting equipment in field of bridge engineering |
CN114391521B (en) * | 2022-01-08 | 2023-09-12 | 深圳市登普科技有限公司 | Aquatic fishing platform |
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US2563260A (en) * | 1949-04-04 | 1951-08-07 | Julius D Stone | Inclined elevator |
US3170412A (en) * | 1963-05-06 | 1965-02-23 | Ribiet Tramway Company | Chair swing damper |
US4043427A (en) * | 1976-03-19 | 1977-08-23 | Ray Ackerman | Stair elevator |
US4438830A (en) * | 1979-06-25 | 1984-03-27 | Born Raymond W | Stairway with fail safe power lift for lading, the infirm, wheelchair patients, and the like |
US6182798B1 (en) * | 1994-07-26 | 2001-02-06 | Agm Container Controls, Inc. | Mobile lifting device for the disabled |
US5836423A (en) * | 1996-11-04 | 1998-11-17 | Kunczynski; Jan K. | People mover system |
US5709154A (en) * | 1996-11-21 | 1998-01-20 | Schott; Fred R. | Monorail access system for making a boat handicapped accesible |
US6460657B1 (en) * | 1999-01-22 | 2002-10-08 | Siemag Transplan Gmbh | Conveyor apparatus for open-cut mining |
US20020074188A1 (en) * | 1999-02-19 | 2002-06-20 | Marc Lorton | Installation for transporting people, in particular those with reduced mobility, and fitting of this installation from notably an escalator |
US20040083922A1 (en) * | 2001-04-28 | 2004-05-06 | Gnezdilov Vladimir A. | Guideway for transport means |
US6739430B2 (en) * | 2002-01-16 | 2004-05-25 | Robert Hill | Variable-incline ramp system |
Cited By (11)
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US7618223B1 (en) * | 2008-04-30 | 2009-11-17 | Handicaptain Brands, LLC | Dock to boat transfer aid for handicapped boaters |
US20090288578A1 (en) * | 2008-05-23 | 2009-11-26 | Alan Hepner | Carriage traction vehicle |
US8113125B2 (en) | 2008-05-23 | 2012-02-14 | Alan Hepner | Carriage traction vehicle |
US8578861B2 (en) | 2008-05-23 | 2013-11-12 | Alan Hepner | Carriage traction vehicle |
US20110061184A1 (en) * | 2009-09-14 | 2011-03-17 | Kimener R Peter | Repositionable pit seal |
US20110061185A1 (en) * | 2009-09-14 | 2011-03-17 | Kimener R Peter | Repositionable pit seal |
US8006338B2 (en) | 2009-09-14 | 2011-08-30 | Midwest Industrial Door, Inc. | Repositionable pit seal |
US8056174B2 (en) | 2009-09-14 | 2011-11-15 | Midwest Industrial Door, Inc. | Repositionable pit seal |
CN104709296A (en) * | 2015-02-28 | 2015-06-17 | 徐州徐工随车起重机有限公司 | Expandable and foldable work platform |
CN109162201A (en) * | 2018-09-25 | 2019-01-08 | 中铁二局第五工程有限公司 | A kind of novel chain type track installation vehicle |
US11117044B1 (en) * | 2020-07-27 | 2021-09-14 | Wang-Chuan Chen | Ramp system for sports |
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