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US 5,209,167 AGranted
Trolley wheel assembly and housing having injection molded plastic parts
AssigneeMannesmann Aktiengesellschaft
InventorsKlaus Donner, Eberhard Becker, Roland Staggl
Life of this patent
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Abstract
The present invention relates to a wheel casing with a housing formed of two shells with bearings for a wheel. According to the invention, the shells (6, 7) of the housing (5) are injection molded parts, and they are connected to each other in a force-locked and/or a form-locked manner.
Claims17
A wheel assembly for being mounted on a trolley, said wheel assembly comprising:
- a housing comprising a first shell and a second shell, said first shell and said second shell being connected to one another to form said housing;
- a wheel being mounted for rotational movement at least partly within said housing;
- bearing means for guiding the rotational movement of said wheel;
- at least one of:
- means for interlocking said first shell and said second shell together;
- and
- means for friction-locking said first shell and said shell together;
- and
- means for friction-locking said first shell and said second shell together;
- to connect said first shell and said second shell to form said housing;
- said wheel comprising a central hub being disposed across said housing;
- said bearing means comprising a plurality of bearings;
- means for retaining said bearings towards said hub;
- means for reinforcing said bearing means;
- each of said first wheel and said second shell having an interior surface facing towards said wheel;
- said reinforcing means being disposed on at least one of said first shell and said second shell;
- and
- said reinforcing means comprising a plurality of spoke-like webs extending away from said retaining means along the interior surface of said at least one of said first shell and said second shell.
15 more elements
A trolley comprising:
- at least one wheel assembly being attached to said trolley;
- said at least one wheel assembly comprising a housing and a wheel being mounted for rotational movement at least partly within said housing;
- said housing comprising a first shell and a second shell, said first shell and said second shell being connected to one another to form said housing;
- said first shell and said second shell being injection molded;
- at least one of:
- means for interlocking said first shell and said second shell together;
- and
- means for friction-locking said first shell and said second shell together;
- to connect said first shell and said second shell to form said housing;
- said wheel comprising a central hub being disposed across said housing;
- bearing means for guiding the rotational movement of said wheel;
- means for retaining said bearings toward said hub;
- means for reinforcing said bearing means;
- said bearing means comprising a plurality of bearings;
- each of said first shell and said second shell comprising at least one of an injection-molded plastic material and an injection-molded light alloy material;
- each of said first shell sand said second shell having an interior surface facing towards said wheel;
- said reinforcing means being disposed on at least one of said first shell and said second shell;
- and
- said reinforcing means comprising a plurality of spoke-like webs extending away from said retaining means along the interior surface of said at least one of is a first shell and said second shell.
16 more elements
A wheel assembly for being mounted on a trolley, said wheel assembly comprising:
- a housing comprising a first shell and a second shell, said first shell and said second shell being connected to one another to form said housing;
- said first shell and said second shell being injection molded;
- at least one of:
- means for interlocking said first shell and said second shell together;
- and
- means for friction-locking said first shell and said second shell toegher;
- to connect said first shell and said second shell to form said housing;
- a wheel being mounted for rotational movement of at least partly within said housing;
- said wheel comprising a central hub being disposed across said housing;
- bearing means for guiding the rotational movement of said wheel;
- means for retaining said bearings towards said hub;
- means for reinforcing said bearing means;
- said bearing means comprising a plurality of bearings;
- each of said first shell and said second shell comprising at least one of an injection-molded plastic material and an injection-molded light alloy material;
- each of said first shell and said second shell having an interior surface facing towards said wheel;
- said reinforcing means being disposed on at least one of said first shell and said second shell;
- and
- said reinforcing means comprising a plurality of spoke-like webs extending away from said retaining means along the interior surface of said at least one of said first shell and said second shell.
15 more elements
Dependencies are inferred from the claim text.