The words “comprising,” “having,” “containing,” and “including,” and other forms thereof, are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items, or meant to be limited to only the listed item or items.
Bed frames are commonly used structures to support above a floor a box-spring and mattress. These bed frames include legs that frequently have at each of their terminal ends a wheel assembly, which enables the bed frame to be moved around. Typically, they are made of a number of pieces that are shipped assembled or unassembled and then assembled by an installer at the location where the bed frame is to be used. In many prior art bed frames the pieces are frequently numerous and sometimes require the use of tools to connect them together. This adds cost to manufacturing, shipping and installation. Ideally, a bed frame and wheel assembly should have a minimum number of pieces, be easy to package and ship, and be conveniently and quickly assembled.
My wheel-mounting device has one or more of the features depicted in the embodiment discussed in the section entitled “DETAILED DESCRIPTION OF ONE ILLUSTRATIVE EMBODIMENT.” The claims that follow define my wheel-mounting device and method of manufacturing, distinguishing them from the prior art; however, without limiting the scope of my wheel-mounting device and method of manufacturing as expressed by these claims, in general terms, some, but not necessarily all, of their features are:
One, my wheel-mounting device includes a pair of plates that are connected together to hold between them a shaft of a wheel assembly. Each plate may have a substantially flat surface, and the flat surface of each plate has therein an elongated indentation and each indentation has an open external end portion at an edge of the plate in which the indentation is situated. The plates are attached together with the flat surfaces abutting and the indentations being aligned and facing each other to form a cavity upon attachment of the plates. The cavity may have a substantially cylindrical configuration with a predetermined substantially uniform diameter. The open external end portions of the indentations form at an outer end of the cavity an open entryway along the edges of the abutting and attached plates. The plates may be substantially mirror images. Each plate may comprise a carrier portion and a wing portion along an outer edge of the carrier portion, and each wing member may be substantially at 90 degrees with respect to the plate. The wing member facilitates detachably connecting the wheel-mounting device to a bed frame. A portion of the attached plates may form a stop member at an inner end of the cavity opposite the open entryway to limit inward movement lengthwise of the shaft.
Two, each indentation includes an inwardly projecting dimple element. The dimple elements may be aligned along a common line and point towards each other. Upon attachment of the plates, the dimple elements are separated by a predetermined distance to enable these elements to hold a shaft of a wheel within the cavity. The predetermined distance is such to enable the dimple elements to prevent the wheel shaft from moving lengthwise out the open entryway after the shaft has been placed within the cavity.
Three, the cavity and the wheel shaft are sized and configured to be interactive. The wheel assembly may be, for example, of the swivel type, which has a wheel mounted between arms of a yoke and an elongated shaft extending outward from the yoke's crosspiece. The shaft may include an upper end portion comprising an enlarged element having a width dimension slightly greater than the predetermined distance between the dimple elements. The shaft may have a predetermined length that enables a lower end to extend from the open entryway. The enlarged element may be at or nearby the inner end of the cavity and inward of the dimple elements after the plates are attached to hold the shaft within the cavity and prevent movement lengthwise out the open entryway. The shaft may include a substantially cylindrical main body portion with a diameter less than the predetermined distance between the dimple elements.
Four, the enlarged element is positioned along the main body of the shaft so upon being positioned within the cavity between the assembled plates, it is inward of the dimple elements to hold the shaft within the cavity and prevent movement lengthwise out the open entryway. The enlarged element may be a substantially annular member having a diameter greater than the diameter of the main body portion and less than the predetermined diameter of the cylindrical cavity. The lower end of the shaft may have a cylindrical configuration with a diameter about equal to the diameter of the cavity. The dimple elements function as a bearing for the shaft and the lower cylindrical end also functions as a bearing for the shaft.
These features are not listed in any rank order nor is this list intended to be exhaustive.
My method of manufacturing my wheel-mounting device comprises at least two steps. First, a pair of plates is provided that are substantially mirror images. Each plate has a substantially L-shaped configuration and is manufactured from substantially flat metallic sheets punch pressed and bent into the L-shaped configuration in accordance with conventional metal forming processes. Each plate includes a wall with an indentation therein, and each indentation includes an inwardly projecting dimple element. Each indentation has an open end along an edge of the plate. Second, the plates are fastened together with the walls of the plates abutting each other and the indentations aligned to form a cavity having along the edges an entryway adapted to receive a shaft of a wheel. The dimples may be aligned opposite each other and are spaced apart a predetermined distance to hold the shaft of the wheel in the cavity. The shaft may be inserted into the entryway of the cavity after fastening the plates together. Or, the shaft may be placed between the plates and then the plates are fastened together.
One embodiment of my wheel-mounting device, a bed using this device, and methods are shown in the accompanying drawing, which is for illustrative purposes only. This drawing includes the following figures (Figs.), with like numerals indicating like parts:
As shown in
As shown best in
This embodiment of my wheel-mounting device 10 includes a pair of plates P1 and P2 that hold the wheel assembly 30 in position. The plates P1 and P2 are substantially mirror images of each other and have a generally L-shaped configuration with a carrier portion CP and a wing portion WP. Each wing portion WP is substantially at 90 degrees with respect to the carrier portion CP.
The plates P1 and P2 are manufactured from flat metallic sheets punch pressed and bent to into the L-shaped configuration. The sheets are placed into suitable shaped dies. As each metallic sheet enters and leaves a die, it will conform to the shape of the die. One die will form the plate P1, and another die will be the plate P2. As best shown in
As shown best in
Once the plates P1 and P2 are joined, as shown in
In one method of assembly, the shaft S of the wheel assembly 30 is inserted through the open entryway 20 into the cavity C after the plates P1 and P2 are joined. As best shown in
An alternate method of assembly is to place the shaft S between unattached plates P1 and P2 and within the indentations I1 and I2 so the free end E5 abuts the tip T of the stop member SM. Then the plates P1 and P2 are attached together using, for example, nuts and bolts.
As shown in
The above presents a description of the best mode contemplated of carrying out my swivel wheel-mounting device, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains to make and use my wheel-mounting device. My wheel-mounting device is, however, susceptible to modifications and alternate constructions from the illustrative embodiment discussed above which are fully equivalent. Consequently, it is not the intention to limit my swivel wheel-mounting device to the particular embodiment disclosed. On the contrary, my wheel-mounting device is to cover all modifications and alternate constructions coming within the spirit and scope of my swivel wheel-mounting device as generally expressed by the following claims, which particularly point out and distinctly claim the subject matter of my swivel wheel-mounting device: