[특허]Ladder carrier

Rich, Christian Stacy

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특허 상세정보

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Ladder carrier

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62B-001/26 B62B-001/00 B62B-001/14 B62B-001/22 E06C-007/00
출원번호	US-0888829 (2013-05-07)
등록번호	US-9475512 (2016-10-25)
발명자 / 주소	Rich, Christian Stacy
출원인 / 주소	Rich, Christian Stacy
대리인 / 주소	Cooper, J. Carl
인용정보	피인용 횟수 : 0 인용 특허 : 29

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A ladder carrier is disclosed herein. The ladder carrier includes a pair of pneumatic tires that are connected to each other through an axle. The ladder carrier further includes a support frame that is mounted on the axle. The support frame may include two bars that may be configured to hold at least one ladder such that center of gravity of the at least one ladder is supported by the pair of pneumatic tires. Further, the ladder carrier includes a base structure that may be connected between the two bars. The base structure may be connected to the two ba...

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1. A ladder carrier comprising: a pair of pneumatic tires, each disposed on one side of the ladder carrier and connected to each other through an axle such that said pneumatic tires rest on a surface over which the ladder carrier may be propelled in front and rear directions on the surface perpendicular to the axle;a base structure comprised of two bars disposed between the pneumatic tires with each bar coupled to the axle with each bar extending in a straight line from the fore end of the respective bar at a point fore of the tires to the aft end of the respective bar at a point aft of the axle when the two bars are in a horizontal position;a support frame including the base structure wherein the support frame comprises an additional two upwardly disposed bars, a lower end of one of the upwardly disposed bars being disposed fore of the tires and coupled to the fore portion of a first one of the two bars of the base structure at substantially a right angle, and the lower end of the other of the two upwardly disposed bars being disposed aft of the axle and coupled to the aft portion of said first one of the two bars of the base structure, upper ends of the two upwardly disposed bars extending above the pneumatic tires; andsaid base structure configured to hold the at least one ladder such that the center of gravity of the at least one ladder is supported by the pair of pneumatic tires in a fashion that the ladder carrier can be propelled frontward or rearward with the pushing or pulling force applied by a single operator person holding directly by hand at or near an end of said at least one ladder such that the combination of the ladder and the ladder carrier is balanced by the operator person while being propelled. 2. The ladder carrier as claimed in claim 1, wherein said support frame comprises four upwardly disposed bars, including said two upwardly disposed bars plus two further upwardly disposed bars with the lower end of each of the two further upwardly disposed bar coupled to one of the fore or aft portions respectively of a second one of said two base frame bars, thereby providing two upward bars disposed fore of the tires and two disposed aft of the axle. 3. The ladder carrier as claimed in claim 2, wherein each of the pair of pneumatic tires is individually rotating. 4. The ladder carrier as claimed in claim 1, wherein the ladder carrier is made up of a material selected from high carbon steel, steel alloy, aluminum, plastic, fiber glass, and carbon fiber. 5. The ladder carrier as claimed in claim 1, wherein the support frame can hold said at least one ladder such that said at least one ladder acts as a handle for maneuvering the ladder carrier by the operator person's hand. 6. The ladder carrier as claimed in claim 1, wherein the support frame is connected to the axle with a nut and bolt. 7. The ladder carrier as claimed in claim 1, including a tool holder attached to said support frame and the tool holder comprises a platform or an open top box or cage and is made up of a wire mesh. 8. The ladder carrier as claimed in claim 1 further comprising a tool holder incorporated in the base structure disposed at a surface of the base structure, wherein the tool holder is configured in the form of a platform or an open top box or cage to carry tools and when the surface of the base structure is in a horizontal position the entire base structure is lower than the top of the pneumatic tires. 9. The ladder carrier as claimed in claim 8, wherein the tool holder is detachable. 10. The ladder carrier as claimed in claim 1 further comprising an upper platform disposed at the top of the support frame enabling the at least one ladder to be hooked at a side portion of the support frame. 11. The ladder carrier as claimed in claim 10, wherein the upper platform is configured to include a hook for holding the ladder at said side portion of the support frame. 12. The ladder carrier as claimed in claim 1, wherein the magnitude of the force applied by hand by the single operator person at or near the end of the ladder in order to balance the ladder on the pneumatic tires is at the most 10% of the weight of the ladder, and wherein the force is applied in an upward or downward direction. 13. An apparatus comprising: a pair of tires each having a rim portion connected to each other through an axle wherein the tires are in contact with terrain and are individually rotating and inflated to a pressure between 5 and 35 psi that gives the apparatus the ability to be navigated by a person by hand over different kinds of the terrain;a support frame coupled to the axle, wherein the support frame comprises four upwardly disposed bars, disposed two fore and two aft, with the upper ends of the four bars extending above the pneumatic tires and configured to hold one or more ladders such that the center of gravity of the one or more ladders is supported by the pair of tires with force applied directly by the hand of the operator person at or near an end of the one or more ladders such that the apparatus is thereby held in equilibrium; anda base structure part of the support frame having fore and aft ends connected between the lower ends of the four bars at a portion of the fore and aft ends, which are vertically positioned above the vertical height of the axle, below the upper rim of the tires and outside the diameter of the rim when the base structure is in a horizontal position, wherein the base structure provides a platform for supporting the one or more ladders above the terrain. 14. The apparatus of claim 13, wherein the support frame holds the one or more ladders in a fashion that one ladder acts as a handle for maneuvering the apparatus over the terrain by the hand of the operator person. 15. The apparatus of claim 13, wherein the apparatus is configured such that when the apparatus is maneuvered over the terrain by the operator person, the clearance provided between the base structure and the terrain is sufficient to prevent the ends of the one or more ladders being carried from dragging on the terrain when the apparatus is used on terrain. 16. The apparatus of claim 13, wherein the support frame additionally comprises two cross bars, disposed at the upper ends of the upwardly disposed bars, parallel to the axle, one cross bar fore and one cross bar aft of the axle and each cross bar includes a hook for carrying the one or more ladders at the side of the support frame. 17. The apparatus of claim 13, wherein the apparatus includes a tool holder attached to the support frame disposed at a surface of the base structure, and wherein the tool holder has an open top and is configured to carry a plurality of tools. 18. The apparatus of claim 13, wherein the apparatus is configured to include a tray attached to the support frame to allow the apparatus to carry hand tools in addition to ladders. 19. The apparatus of claim 13, wherein the air pressure in the tires can be adjusted from 5 to 35 psi to facilitate the navigation of the apparatus over different terrain. 20. The apparatus of claim 13, wherein the apparatus is configured to be dismantled for shipping and/or transport. 21. The apparatus of claim 17, wherein said tool holder is detachable. 22. The apparatus of claim 18, wherein said tray is detachable. 23. The ladder carrier as claimed in claim 7, wherein the tool holder is detachable.

이 특허에 인용된 특허 (29)

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Ladder carrier

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Ladder carrier

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