IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0705712
(2007-02-12)
|
등록번호 |
US-7562897
(2009-07-29)
|
발명자
/ 주소 |
- Sherman, Arnold
- Sherman, Lindy
|
인용정보 |
피인용 횟수 :
18 인용 특허 :
9 |
초록
▼
A collapsible transport cart includes a bottom wall with a planar top surface, and a plurality of apertures formed in opposed corners thereof. First and second axially opposed walls are attached to the bottom wall, and third and fourth walls are attached to opposed longitudinal edges thereof. A plur
A collapsible transport cart includes a bottom wall with a planar top surface, and a plurality of apertures formed in opposed corners thereof. First and second axially opposed walls are attached to the bottom wall, and third and fourth walls are attached to opposed longitudinal edges thereof. A plurality of brackets is removably mated with top edges of the walls such that a rectangular cavity is defined within an interior perimeter thereof. A plurality of shelves and caster assemblies is adjustably mated to the bottom wall. A mechanism adjustably and removably supports the shelves within the cavity such that the shelves remain statically nested within the cavity when the walls are biased to a horizontal and open position.
대표청구항
▼
What is claimed as new and what is desired to secure by Letters Patent of the United States is: 1. A collapsible transport cart for storing and carrying objects between remote locations, said collapsible transport cart comprising: a bottom wall having a planar top surface elevated above a ground su
What is claimed as new and what is desired to secure by Letters Patent of the United States is: 1. A collapsible transport cart for storing and carrying objects between remote locations, said collapsible transport cart comprising: a bottom wall having a planar top surface elevated above a ground surface during transport procedures, said bottom wall having a plurality of apertures formed in opposed corners thereof respectively; first and second axially opposed walls pivotally attached to said bottom wall and registered orthogonal to a centrally positioned longitudinal axis of said bottom wall; third and fourth walls pivotally attached to opposed longitudinal edges of said bottom wall; a plurality of brackets removably mated with contiguously abutted top edges of said first, second, third, and fourth walls such that a rectangular cavity is defined within an interior perimeter of said first, second, third and fourth walls respectively; a plurality of shelves; a plurality of spring-loaded and detachable caster assemblies adjustably mated to said bottom wall; and means for adjustably and removably supporting said shelves within said cavity such that said shelves remain statically nested within said cavity when said first, second, third, and fourth walls are biased to a horizontal and open position. 2. The collapsible transport cart of claim 1, wherein said shelves supporting means comprises: a plurality of elongated and rectilinear rods vertically anchored within said apertures and extending upwardly therefrom while remaining registered orthogonally to said bottom wall, each of said rods having a plurality of notches formed therein, each of said notches being equidistantly juxtaposed along a longitudinal length of said rods, said notches facing inwardly towards a center of said bottom wall; and a plurality of pegs having arcuate inner surfaces firmly abutted against associated ones of said rods, each of said pegs further having male portions removably interfitted within said notches such that said pegs remain statically affixed to said rods during transport procedures; wherein each of said shelves is provided with arcuately shaped opposed corners directly engaged with an outer surface of said rods and directly seated on said pegs during transport procedures respectively. 3. The collapsible transport cart of claim 1, wherein each of said spring-loaded caster assemblies comprises: a caster; an anchor bracket and a deformably resilient spring member having opposed ends directly engaged with a bottom surface of said anchor bracket and a bottom surface of said bottom wall respectively; a linear axle directly coupled to said anchor bracket and extending horizontally outward therefrom, said caster being journaled about said axle; and a deformably resilient arm having first and second portions directly anchored to said bottom wall and said axle respectively, wherein said arm automatically flexes between compressed and elongated positions when said spring member is biased between elongated and compressed positions respectively. 4. The collapsible transport cart of claim 1, wherein each of said first, second, third, and fourth walls are independently and simultaneously articulated about intersecting arcuate paths inwardly defined within a perimeter of said bottom wall. 5. The collapsible transport cart of claim 1, wherein each of said brackets is L-shaped. 6. A collapsible transport cart for storing and carrying objects between remote locations, said collapsible transport cart comprising: a bottom wall having a planar top surface elevated above a ground surface during transport procedures, said bottom wall having a plurality of apertures formed in opposed corners thereof respectively; first and second axially opposed walls pivotally attached to said bottom wall and registered orthogonal to a centrally positioned longitudinal axis of said bottom wall; third and fourth walls pivotally attached to opposed longitudinal edges of said bottom wall, wherein said first and second walls pivot about first and second co-planar axes registered parallel to each other, said third and fourth walls being pivotal about co-planar axes registered parallel to each other and further registered orthogonally to said axes of said first and second walls, said axes of said first and second walls being disposed above said axes of said third and fourth walls respectively such that said first and second walls horizontally lay directly on said third and fourth walls during non-transport procedures; a plurality of brackets removably mated with contiguously abutted top edges of said first, second, third, and fourth walls such that a rectangular cavity is defined within an interior perimeter of said first, second, third and fourth walls respectively; a plurality of shelves; a plurality of spring-loaded and detachable caster assemblies adjustably mated to said bottom wall; and means for adjustably and removably supporting said shelves within said cavity such that said shelves remain statically nested within said cavity when said first, second, third, and fourth walls are biased to a horizontal and open position. 7. The collapsible transport cart of claim 6, wherein said shelves supporting means comprises: a plurality of elongated and rectilinear rods vertically anchored within said apertures and extending upwardly therefrom while remaining registered orthogonally to said bottom wall, each of said rods having a plurality of notches formed therein, each of said notches being equidistantly juxtaposed along a longitudinal length of said rods, said notches facing inwardly towards a center of said bottom wall; and a plurality of pegs having arcuate inner surfaces firmly abutted against associated ones of said rods, each of said pegs further having male portions removably interfitted within said notches such that said pegs remain statically affixed to said rods during transport procedures; wherein each of said shelves is provided with arcuately shaped opposed corners directly engaged with an outer surface of said rods and directly seated on said pegs during transport procedures respectively. 8. The collapsible transport cart of claim 6, wherein each of said spring-loaded caster assemblies comprises: a caster; an anchor bracket and a deformably resilient spring member having opposed ends directly engaged with a bottom surface of said anchor bracket and a bottom surface of said bottom wall respectively; a linear axle directly coupled to said anchor bracket and extending horizontally outward therefrom, said caster being journaled about said axle; and a deformably resilient arm having first and second portions directly anchored to said bottom wall and said axle respectively, wherein said arm automatically flexes between compressed and elongated positions when said spring member is biased between elongated and compressed positions respectively. 9. The collapsible transport cart of claim 6, wherein each of said first, second, third, and fourth walls are independently and simultaneously articulated about intersecting arcuate paths inwardly defined within a perimeter of said bottom wall. 10. The collapsible transport cart of claim 6, wherein each of said brackets is L-shaped. 11. A method for storing and carrying objects between remote locations, said method comprising the steps of: a. providing a bottom wall having a planar top surface elevated above a ground surface during transport procedures, said bottom wall having a plurality of apertures formed in opposed corners thereof respectively; b. pivotally attaching first and second axially opposed walls to said bottom wall and registered orthogonal to a centrally positioned longitudinal axis of said bottom wall; c. pivotally attaching third and fourth walls to opposed longitudinal edges of said bottom wall, wherein said first and second walls pivot about first and second co-planar axes registered parallel to each other, said third and fourth walls being pivotal about co-planar axes registered parallel to each other and further registered orthogonally to said axes of said first and second walls, said axes of said first and second walls being disposed above said axes of said third and fourth walls respectively such that said first and second walls horizontally lay directly on said third and fourth walls during non-transport procedures; d. removably mating a plurality of brackets with contiguously abutted top edges of said first, second, third, and fourth walls such that a rectangular cavity is defined within an interior perimeter of said first, second, third and fourth walls respectively; e. providing a plurality of shelves; f. adjustably mating a plurality of spring-loaded and detachable caster assemblies to said bottom wall; and g. removably supporting said shelves within said cavity such that said shelves remain statically nested within said cavity when said first, second, third, and fourth walls are biased to a horizontal and open position. 12. The method of claim 11, further comprising the steps of: a. vertically anchoring a plurality of elongated and rectilinear rods within said apertures and extending upwardly therefrom while remaining registered orthogonally to said bottom wall, each of said rods having a plurality of notches formed therein, each of said notches being equidistantly juxtaposed along a longitudinal length of said rods, said notches facing inwardly towards a center of said bottom wall; and b. firmly abutting a plurality of pegs having arcuate inner surfaces against associated ones of said rods, each of said pegs further having male portions removably interfitted within said notches such that said pegs remain statically affixed to said rods during transport procedures; wherein each of said shelves is provided with arcuately shaped opposed corners directly engaged with an outer surface of said rods and directly seated on said pegs during transport procedures respectively. 13. The method of claim 11, wherein each of said spring-loaded caster assemblies comprises: a caster; an anchor bracket and a deformably resilient spring member having opposed ends directly engaged with a bottom surface of said anchor bracket and a bottom surface of said bottom wall respectively; a linear axle directly coupled to said anchor bracket and extending horizontally outward therefrom, said caster being journaled about said axle; and a deformably resilient arm having first and second portions directly anchored to said bottom wall and said axle respectively, wherein said arm automatically flexes between compressed and elongated positions when said spring member is biased between elongated and compressed positions respectively. 14. The method of claim 11, wherein each of said first, second, third, and fourth walls are independently and simultaneously articulated about intersecting arcuate paths inwardly defined within a perimeter of said bottom wall. 15. The method of claim 11, wherein each of said brackets is L-shaped.
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