Closure fasteners – Knob rose plates
Patent
1993-06-29
1995-04-25
Lindsey, Rodney M.
Closure fasteners
Knob rose plates
292348, 403349, E05B 1502
Patent
active
054092787
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to a door knob or handle assembly.
BACKGROUND OF THE INVENTION
Assemblies of the type to which the invention relates are commonly called locksets and are typically secured to internal doors of a building or the like. The lockset may include opposed knobs, handles or consist of a knob on one side of the door and a handle on the other. In one earlier proposal the knob-or handle was fixed to a plate or rose for rotation relative thereto and the handles were fixed to each other and to opposite sides of the door by a pair of screws which projected through the roses and through the door. Such a fixing arrangement was not aesthetically pleasing since the heads of the screws were visible externally of each of the roses. For cupboard doors a handle or knob on one side only was required.
In another earlier proposal a concealed fixing arrangement was employed. In that proposal the handles or knobs were fixed to respective roses for rotation thereto and a mounting plate was fixed to each side of the door by screws extending through the mounting plates and the door. The rose was then fixable to the mounting plate by screw threaded engagement therewith. It was typical for the mounting plate to be made of diecast or similar material and have an upstanding spigot with an external screw thread. The rose was provided with a spigot having a corresponding internal screw thread. The screw mounting was tedious to achieve and, if care was not taken cross threading could easily result and because of the nature of the materials involved this could lead to damage of the threads and render the lockset useless.
It is an object of the present invention to provide an improved door knob or handle assembly which at least minimises the disadvantages referred to above.
DISCLOSURE OF THE INVENTION
According to one aspect the invention provides a door knob or handle assembly for a door and having a rose or back plate to which a handle may be fitted and a mounting plate fixable to the door, said back plate and said mounting plate having complementary bayonet fixing means to enable said back plate to be fixed to said mounting plate.
The door knob or handle need not be rotatably mounted relative to the back plate. For example, where the knob or handle is simply intended to be fitted to a wardrobe or cupboard door or the like, rotation need not occur. Also, in such applications the assembly need not include the provision of a novel handle on each side of the door although, if the assembly is intended to be used as a typical lockset, then clearly a novel handle-may be provided on each side of the door and each knob or handle would then be associated with a respective back plate and mounting plate as discussed above.
The knob or handle may be made from any suitable material or made from combinations of materials. For example, the knob may be made of porcelain, Wood or metal. Where a handle is present, the whole of the handle may be made from one material or alternatively several materials may be used to make up the handle. For example, the handle may have a user graspable portion made of wood or porcelain and that part of the handle secured to the back plate may be made of metal.
The bayonet fixing means may comprise outwardly extending projections on one of the back plate or mounting plate and receiving recesses or apertures on the other of the back plate and mounting plate.
Alternatively, projections and recesses or apertures may be present on both of the plates such that a projection on one plate may co-operate with a recess or aperture on the other plate.
It is preferred that the projections extend from the mounting plate and the recesses or apertures be provided on the back plate.
The projections may extend outwardly from the respective plate at spaced locations. Preferably the projections are regularly spaced and circumferentially around the plate. Although there may be a plurality of projections it is preferred that there be three. A greater number of projections may be present. The proje
REFERENCES:
patent: 1497842 (1924-06-01), Dollin
patent: 2027608 (1934-04-01), Moller
patent: 2357102 (1944-08-01), Gold
patent: 2491783 (1949-12-01), Thomas
patent: 2536494 (1951-01-01), Erkkila et al.
patent: 2728597 (1955-12-01), Young
patent: 2778667 (1957-01-01), Young et al.
patent: 2803482 (1957-08-01), Zion
patent: 2810600 (1957-10-01), Kendrick
patent: 2827323 (1958-03-01), Kessel et al.
patent: 3136572 (1964-06-01), Lytle
patent: 3143873 (1964-08-01), Hillgren
patent: 5118152 (1992-06-01), Lin
Lindsey Rodney M.
Whitco Pty Ltd.
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