초록

The present invention provides a new material handling cart adapted for easy travel over uneven surfaces including a pair of independently extendable handles, and optionally having a convertible secondary deck assembly.

대표청구항 ▼

1. A cart for transporting objects, said cart comprising:a primary deck;at least two wheel assemblies, said at least two wheel assemblies positioned on opposite sides of said primary deck, said wheel assemblies adapted to support said primary deck above a support surface;a first side-rail assembly a

1. A cart for transporting objects, said cart comprising:a primary deck;at least two wheel assemblies, said at least two wheel assemblies positioned on opposite sides of said primary deck, said wheel assemblies adapted to support said primary deck above a support surface;a first side-rail assembly and a second side rail assembly, said first and second side-rail assemblies positioned at opposing sides of said primary deck and extending above said primary deck; and,wherein each of said first and second side-rail assemblies include an independently extendable handle assembly wherein each independently extendable handle assembly is adjustable to extend at varying lengths horizontally beyond said primary deck.2. The cart according to claim 1, wherein said first and second side-rail assemblies are removably connected to said primary deck.3. The cart according to claim 1, wherein said independently extendable handle assembly comprises a handle tube and an inner handle member, said inner handle member adapted to be slidably received within said handle tube.4. The cart according to claim 3, wherein said independently extendable handle assembly includes a means for adjustably securing the inner handle member at different extended positions from said handle tube.5. The cart according to claim 4, wherein said means for securing comprises a setscrew.6. The cart according to claim 3, wherein said inner handle member is adapted to adjustably extend from either end of said handle tube.7. The cart according to claim 3, wherein said handle tube includes a rear stop adapted to prevent said inner handle member from extending from the rear of said handle tube.8. The cart according to claim 1, wherein said first and second side-rail assemblies comprise an inverted U-shape and include a front leg, a front corner, a top rail, a rear corner and a rear leg, said front and rear legs adapted to be removably connected to said primary deck.9. The cart according to claim 8, wherein each of said independently extendable handle assemblies are attached to the first and second side-rail assemblies at a position vertically spaced from said top rail.10. A cart for transporting objects, said cart comprising:a primary deck;at least two wheel assemblies, said at least two wheel assemblies positioned on opposite sides of said primary deck, said wheel assemblies adapted to support said primary deck above a support surface;a first side-rail assembly and a second side rail assembly, said first and second side-rail assemblies positioned at opposing sides of said primary deck; and,a convertible secondary deck assembly, said convertible secondary deck assembly including a first deck arm and a second deck arm, each of said first and second deck arms having a first end pivotably connected to one of said first and second side-rails and a second end adapted to make rotational-limiting engagement with the other one of the first and second side-rails, said first and second deck arms being independently pivotable with respect to the other one of the first and second deck arms.11. The cart according to claim 10, wherein said first and second side-rail assemblies each include an independently extendable handle assembly.12. The cart according to claim 11, wherein said independently extendable handle assembly includes a handle tube and an inner handle member, said inner handle member adapted to be slidably received within said handle tube; and, said first end comprises a sleeve adapted to be slidably fitted around said handle tube, whereby said first deck arm may pivot about said handle tube.13. The cart according to claim 10, wherein said first and second side-rail assemblies are removably connected to said primary deck.14. The cart according to claim 12, wherein said first and second side-rail assemblies comprise an inverted U-shape and include a front leg, a front corner, a top rail, a rear corner and a rear leg; said handle tube of each independently extendable handle assembly is affixed to said front leg and said rear leg of the respective side-rail assembly, said handle tube including a first portion extending outwardly beyond said front leg and a second portion extending outwardly beyond said second leg.15. The cart according to claim 14, wherein said first end of said first deck arm is pivotably connected to said first portion of said first side-rail assembly and said second end is adapted to make rotational-limiting engagement with said first portion of said second side-rail assembly.16. The cart according to claim 14, wherein said first end of said second deck arm is pivotably connected to said second portion of said first side-rail and said second end is adapted to make rotational-limiting engagement with said second portion of said second side-rail.17. A cart for transporting objects, said cart comprising:a primary deck;two wheel assemblies, said two wheel assemblies positioned on opposite sides of said primary deck, said wheel assemblies adapted to support said primary deck above a surface;a first side-rail assembly and a second side rail assembly, said first and second side-rail assemblies positioned at opposing sides of said primary deck, each of said first and second side-rail assemblies including an independently extendable handle assembly extendable to varying lengths independent of the independently extendable handle assembly of the other one of the first and second side-rail assemblies; and,a convertible secondary deck assembly, said convertible secondary deck assembly including a first deck arm and a second deck arm, each of said first and second deck arms having a first end pivotably connected to one of said first and second side-rail assemblies and a second end adapted to make rotational-limiting engagement with the opposing side-rail assembly.18. The cart according to claim 17, wherein said first and second side-rail assemblies are removably attached to said primary deck.19. The cart according to claim 17, wherein said independently extendable handle assembly includes a handle tube and an inner handle member slidably received within said handle tube.20. The cart according to claim 19, wherein said independently extendable handle assembly includes a means for securing said inner handle member at different positions extending from said handle tube.