Caster and dolly wheel attachments for cylindrical tanks
DCFirst Claim
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1. A combination of a caster assembly, and a tank and a wheel dolly assembly, wherein the caster assembly snap fits onto the tank, the combination comprising:
- at least one caster assembly comprising a housing comprising an outer shell connected to at least one caster wheel, the outer shell also being connected to an outer wall, the outer wall extending downward from the outer shell before terminating at a u-shaped lower edge connected to and disposed between the outer wall and an upwardly extending inner wall, the outer wall being connected to an inwardly extending ledge disposed above the u-shaped lower edge and which extends towards the inner wall, the outer wall, u-shaped lower edge, inner wall and ledge of the caster housing defining a female receiving area,a tank comprising an outer wall that extends downwardly and terminates at a radially outwardly extending lower bead, the lower bead being disposed between and connected to the outer wall of the tank and an upwardly extending inner wall of the tank,the lower bead of the tank snap fitting into the female receiving area of the caster housing,an upper portion of the outer shell of the caster assembly being in contact with the outer wall of the tank in a manner so that the caster assembly provides support to the tankthe tank being connected to a wheel dolly assembly comprising comprising a housing comprising an outer shell connected to an axel disposed between and connected to a pair of wheel, the outer shell of the wheel dolly housing also being connected to a first outer wall, the first outer wall of the wheel dolly housing extending downward from the outer shell of the wheel dolly housing before terminating at a first u-shaped lower edge connected to and disposed between the first outer wall of the wheel dolly housing and a first upwardly extending inner wall, the first outer wall of the wheel dolly housing being connected to a first inwardly extending ledge disposed above the first u-shaped lower edge of the wheel dolly housing and which extends towards the first inner wall of the wheel dolly housing, the first outer wall, first u-shaped lower edge, first inner wall and first ledge of the wheel dolly housing defining a first female receiving area of the wheel dolly housing, andthe bead of the tank snap fitting into the first female receiving area of the wheel dolly housing.
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Abstract
Caster wheel assemblies that may be snap-fitted onto a cylindrical tank or drum are shown and described. Also dolly-wheel assemblies that include an axle supported by two wheels are also disclosed which may be snap-fitted onto a cylindrical tank or drum. The caster wheel assemblies and dolly wheel assemblies disclosed herein may be easily mounted onto a tank or drum without the need for a separate supporting platform. A flexible nature of the caster wheel assemblies and wheel-dolly assemblies enables them to be snap-fitted onto tanks of varying diameters.
32 Citations
31 Claims
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1. A combination of a caster assembly, and a tank and a wheel dolly assembly, wherein the caster assembly snap fits onto the tank, the combination comprising:
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at least one caster assembly comprising a housing comprising an outer shell connected to at least one caster wheel, the outer shell also being connected to an outer wall, the outer wall extending downward from the outer shell before terminating at a u-shaped lower edge connected to and disposed between the outer wall and an upwardly extending inner wall, the outer wall being connected to an inwardly extending ledge disposed above the u-shaped lower edge and which extends towards the inner wall, the outer wall, u-shaped lower edge, inner wall and ledge of the caster housing defining a female receiving area, a tank comprising an outer wall that extends downwardly and terminates at a radially outwardly extending lower bead, the lower bead being disposed between and connected to the outer wall of the tank and an upwardly extending inner wall of the tank, the lower bead of the tank snap fitting into the female receiving area of the caster housing, an upper portion of the outer shell of the caster assembly being in contact with the outer wall of the tank in a manner so that the caster assembly provides support to the tank the tank being connected to a wheel dolly assembly comprising comprising a housing comprising an outer shell connected to an axel disposed between and connected to a pair of wheel, the outer shell of the wheel dolly housing also being connected to a first outer wall, the first outer wall of the wheel dolly housing extending downward from the outer shell of the wheel dolly housing before terminating at a first u-shaped lower edge connected to and disposed between the first outer wall of the wheel dolly housing and a first upwardly extending inner wall, the first outer wall of the wheel dolly housing being connected to a first inwardly extending ledge disposed above the first u-shaped lower edge of the wheel dolly housing and which extends towards the first inner wall of the wheel dolly housing, the first outer wall, first u-shaped lower edge, first inner wall and first ledge of the wheel dolly housing defining a first female receiving area of the wheel dolly housing, and the bead of the tank snap fitting into the first female receiving area of the wheel dolly housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A caster assembly snap-fitting onto a tank connected to a wheel dolly assembly, the caster assembly comprising:
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a housing comprising an outer shell connected to at least one caster wheel, the outer shell also being connected to an outer wall, the outer wall extending downward from the outer shell before terminating at a u-shaped lower edge connected to and disposed between the outer wall and an upwardly extending inner wall, the outer wall being connected to an inwardly extending ledge disposed above the u-shaped lower edge and which extends towards the inner wall, the outer wall, u-shaped lower edge, inner wall and ledge of the caster housing defining a female receiving area, wherein the outer wall of the caster housing forms part of a threaded aperture disposed on a side of the outer wall of the caster housing radially opposite from the female receiving area, the u-shaped lower edge of the caster housing comprising an opening aligned with the threaded aperture, the caster assembly further comprising a fastener received in the threaded aperture, the fastener comprising a flange received in the opening of the u-shaped lower edge, and wherein the wheel dolly assembly comprises a housing comprising an outer shell connected to an axel disposed between and connected to a pair of wheel, the outer shell of the wheel dolly housing also being connected to a first outer wall, the first outer wall of the wheel dolly housing extending downward from the outer shell of the wheel dolly housing before terminating at a first u-shaped lower edge connected to and disposed between the first outer wall of the wheel dolly housing and a first upwardly extending inner wall, the first outer wall of the wheel dolly housing being connected to a first inwardly extending ledge disposed above the first u-shaped lower edge of the wheel dolly housing and which extends towards the first inner wall of the wheel dolly housing, the first outer wall, first u-shaped lower edge, first inner wall and first ledge of the wheel dolly housing defining a first female receiving area of the wheel dolly housing, a bead of the tank snap fitting into the first female receiving area of the wheel dolly housing. - View Dependent Claims (15, 16)
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17. A vacuum cleaner comprising:
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a cylindrical tank comprising an outer wall that extends downwardly and terminates at a radially outwardly extending lower bead, the lower bead being disposed between and connected to the outer wall of the tank and an upwardly extending inner wall of the tank, a plurality of caster assemblies, each caster assembly comprising a housing comprising an outer shell connected to at least one caster wheel, the outer shell also being connected to an outer wall, the outer wall of the caster housing extending downward from the outer shell before terminating at a u-shaped lower edge connected to and disposed between the outer wall of the caster housing and an upwardly extending inner wall, the outer wall of the caster housing being connected to an inwardly extending ledge disposed above the u-shaped lower edge and which extends towards the inner wall of the caster housing, the outer wall, u-shaped lower edge, inner wall and ledge of the caster housing defining a female receiving area, the lower bead of the tank snap fitting into the female receiving area of each caster housing with the caster assemblies spaced apart around the lower bead of the tank, an upper portion of the outer shell of the caster assembly being in contact with the outer wall of the tank in a manner so that the caster assembly provides support to the tank, wherein the tank is connected to two spaced apart caster assemblies and the tank is also connected a wheel dolly assembly that comprises a wheel dolly assembly comprising a housing comprising an outer shell connected to an axel disposed between and connected to a pair of wheel, the outer shell of the wheel dolly housing also being connected to a first outer wall, the first outer wall of the wheel dolly housing extending downward from the outer shell of the wheel dolly housing before terminating at a first u-shaped lower edge connected to and disposed between the first outer wall of the wheel dolly housing and a first upwardly extending inner wall, the first outer wall of the wheel dolly housing being connected to a first inwardly extending ledge disposed above the first u-shaped lower edge of the wheel dolly housing and which extends towards the first inner wall of the wheel dolly housing, the first outer wall, first u-shaped lower edge, first inner wall and first ledge of the wheel dolly housing defining a first female receiving area of the wheel dolly housing, and the bead of the tank snap fitting into the first female receiving area of the wheel dolly housing. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A combination of a caster assembly, and a tank, and a wheel dolly assembly, wherein the caster assembly snap fits onto the tank, the combination comprising:
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at least one caster assembly comprising a housing comprising an outer shell connected to at least one caster wheel, the outer shell also being connected to an outer wall, the outer wall extending downward from the outer shell before terminating at a u-shaped lower edge connected to and disposed between the outer wall and an upwardly extending inner wall, the outer wall being connected to an inwardly extending ledge disposed above the u-shaped lower edge and which extends towards the inner wall, the outer wall, u-shaped lower edge, inner wall and ledge of the caster housing defining a female receiving area, a tank comprising an outer wall that extends downwardly and terminates at a radially outwardly extending lower bead, the lower bead being disposed between and connected to the outer wall of the tank and an upwardly extending inner wall of the tank, the bead of the tank snap fitting into the female receiving area of the caster housing, wherein the tank is also connected to a wheel dolly assembly that comprises a housing comprising an outer shell connected to an axel disposed between and connected to a pair of wheel, the outer shell of the wheel dolly housing also being connected to a first outer wall, the first outer wall of the wheel dolly housing extending downward from the outer shell of the wheel dolly housing before terminating at a first u-shaped lower edge connected to and disposed between the first outer wall of the wheel dolly housing and a first upwardly extending inner wall, the first outer wall of the wheel dolly housing being connected to a first inwardly extending ledge disposed above the first u-shaped lower edge of the wheel dolly housing and which extends towards the first inner wall of the wheel dolly housing, the first outer wall, first u-shaped lower edge, first inner wall and first ledge of the wheel dolly housing defining a first female receiving area of the wheel dolly housing. - View Dependent Claims (28, 29)
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30. A vacuum cleaner comprising:
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a cylindrical tank comprising an outer wall that extends downwardly and terminates at a radially outwardly extending lower bead, the lower bead being disposed between and connected to the outer wall of the tank and an upwardly extending inner wall of the tank, a plurality of caster assemblies, each caster assembly comprising a housing comprising an outer shell connected to at least one caster wheel, the outer shell also being connected to an outer wall, the outer wall of the caster housing extending downward from the outer shell before terminating at a u-shaped lower edge connected to and disposed between the outer wall of the caster housing and an upwardly extending inner wall, the outer wall of the caster housing being connected to an inwardly extending ledge disposed above the u-shaped lower edge and which extends towards the inner wall of the caster housing, the outer wall, u-shaped lower edge, inner wall and ledge of the caster housing defining a female receiving area, the bead of the tank snap fitting into the female receiving area of each caster housing with the caster assemblies spaced apart around the lower bead of the tank, wherein the tank is connected to two spaced apart caster assemblies and the tank is also connected a wheel dolly assembly that comprises; a wheel dolly assembly comprising a housing comprising an outer shell connected to an axel disposed between and connected to a pair of wheel, the outer shell of the wheel dolly housing also being connected to a first outer wall, the first outer wall of the wheel dolly housing extending downward from the outer shell of the wheel dolly housing before terminating at a first u-shaped lower edge connected to and disposed between the first outer wall of the wheel dolly housing and a first upwardly extending inner wall, the first outer wall of the wheel dolly housing being connected to a first inwardly extending ledge disposed above the first u-shaped lower edge of the wheel dolly housing and which extends towards the first inner wall of the wheel dolly housing, the first outer wall, first u-shaped lower edge, first inner wall and first ledge of the wheel dolly housing defining a first female receiving area of the wheel dolly housing, the bead of the tank snap fitting into the first female receiving area of the wheel dolly housing. - View Dependent Claims (31)
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Specification