|Publication number||US2988392 A|
|Publication date||Jun 13, 1961|
|Filing date||Mar 16, 1960|
|Priority date||Mar 16, 1960|
|Publication number||US 2988392 A, US 2988392A, US-A-2988392, US2988392 A, US2988392A|
|Inventors||Kuo Chi Sheng|
|Original Assignee||Kuo Chi Sheng|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (9), Classifications (8)|
|External Links: USPTO, USPTO Assignment, Espacenet|
June 13, 1961 CHI SHENG KUO 2,988,392
COMBINATION DOOR HOLDER AND STOPPER Filed March 16, 1960 as I 32 24 1 J g .1:
CHI SHENG KUO ATTORN EY 2,988,392 COMBINATION DOOR HOLDER AND STOPPER Chi Sheng Kuo, 10 Tunis Ave, Yonkers, NY. Filed Mar. 16, 1960, Ser. No. 15,444 2 Claims. (Cl. 292338) This invention relates to hardware, and more particularly to a combination door holder and stopper.
Ordinarily, many of the door holders now available do not allow for the opening, closing, or holding of doors by persons on both sides of the door, so that the doors are usually jammed and prevent proper access of persons approaching the door from one side. It is therefore an object of the present invention to provide a combination door holder and stopper which can be conveniently attached to the lower end of a solid or hollow door, which will allow control of the door from the side for movement between an open and a closed position.
Another object of the present invention is to provide a combination door holder and stopper which when applied to the door can be readily disengaged from contact with the floor by simply elevating it out of engagement therewith, after which it will be retained in the elevated position until manually pressed down for use at a later time.
A further object of the present invention is to provide a combination door holder and stopper of the type described which may be adjusted to provide for varying degrees of resistance to movement of the door between open and closed positions, in order to adapt itself for use in connection with all types of floor surfaces.
All of the foregoing and still further objects and advantages of this invention will become apparent from a study of the following specification, taken in connection with the accompanying drawing, wherein FIG. 1 is a front elevational view of a combination door holder and stopper made in accordance with the present invention;
FIG. 2 is a side elevational view of the same, with parts broken away and partly in section;
FIG. 3 is a sectional view taken on the line 33 of FIG. 1, showing the device attached to a hollow door;
FIG. 4 is a fragmentary sectional view taken on the line 4-4 of FIG. 1; and
FIG. 5 is a front elevational view of the mounting bracket, per se, of the device.
Referring in detail to the drawing, a combined door holder and stopper made in accordance with the present invention is shown to include a main mounting plate 12 having a plurality of apertures 14 for receiving screws or bolts 16 or 17, respectively, for mounting the device on and near the bottom of a solid or a hollow door, shown respectively in FIGS. 2 and 3.
The main mounting plate 12 is also provided with a pair of forwardly extending ears 18, each of which has an opening 20 therethrough for receiving fasteners 22 which pivotally support a pair of arms 24 thereupon. The opposite free ends of the arms 24 are provided with apertures 25 and 25a which receive a mounting shaft 26 therethrough, which is surrounded by a bushing 27, upon which a roller 28 having a resilient covering 30 is rotatably supported. Opposed friction discs 32 disposed between the arms 24 and the roller 28 serve to exert a frictional pressure against the facing sides of the roller 28 under the control of a lock nut 34 that exerts an axial pressure upon a pair of spring washers 36. The shaft 26 has one end 26a square in cross-section registering in the complementary square aperture 25a. By tightening the nut 34, the pressure upon the spring washers 36 can be increased in order to increase the bearing pressure of the arms 24 and friction discs 32 upon the sides of the roller States atent O F 2,988,392 Patented June 13, 1961 28, thus controlling the amount of force necessary to overcome the frictional resistance of the roller.
A tension spring 40, secured at one end to a transversely extending pin 42 that extends inward from the central portion of one of the arms 24, is provided with an opposite end which is mounted upon an eyelet 44 of the mounting plate 12 in a position substantially intermediate the height of the ears 18. As is quite clearly shown in FIG. 2 of the drawing, the spring 40 is an offcenter type spring which yieldably resists movement of the arm assembly out of either the downwardly extended operative position and the upwardly raised inoperative position. Upward movement of the arm assembly is limited by the abutment of a stop element or nose 46 on one of the arms 24 with stop lug 48 on the lower edge of one of the ears 18 of the main mounting plate 12, on the inner side of the ear. It is to be noted, FIGS. 2 and 3, that the ears have the outline of an acute angle and that the lower edgespf the ears extend at an upwardly sloping angle with respect to the horizontal from the plate 12. The lower surface of the nose 46 is flat and the upper surface of the lug 48 is flat and parallel with the lower edges of the ears 18.
It will be recognized now that in actual use, the arm assembly may be selectively moved to either the elevated position or the lower operative position simply by flipping it either up or down, respectively. In the lower operative position, the friction upon the sides of the roller 28 may be varied by adjusting the nut 34, thus providing sufficient resistance to prevent inadvertent opening or closing of the door, but also allowing such frictional resistance to be overcome by a person attempting to open the door from the side opposite the side on which the device is mounted. The resilient covering 30 prevents scratching the floor, and it will also allow for rolling of the roller 28 upon pile and carpet surfaces.
While the invention has been described with particular reference to the construction shown in the drawing, it is to be understood that such is not to be construed as imparting limitations upon the invention which is best defined by the claims appended hereto.
Having thus described my invention, claim as new and desire to secure by Letters Patent:
1. A combined door holder and stopper comprising a main mounting plate rectangular in outline adapted to be secured in vertical position flush against one side of a door, spaced parallel vertical ears including upper and lower edges extending from the opposed vertical edges of said plate at right angles to the plate, said ears having aligned openings therethrough in the outer ends thereof, a pair of spaced parallel arms having a shaft passing therethrough at one end thereof and a roller rotatably mounted on said shaft, said arms having aligned openings therethrough in the opposite ends thereof, said arms being positioned between said ears with each of the arms closely adjacent one of the ears and with the openings in the ears aligned with said openings in said opposite ends of the arms, pivot fasteners extending through the aligned openings in the ears and arms pivotally securing the arms to the ears, a horizontal pin extending inward from one of said arms, an eyelet on said plate positioned between said ears and substantially intermediate the height of the cars, a coiled spring having one end thereof secured to said pin and the other end thereof secured to said eyelet, one of said arms having a nose extending longitudinally from said opposite end thereof, that one of said ears which is positioned closely adjacent said one of said arms having a lug on the lower edge thereof extending inward into the path of said nose, said arms being pivotal between a position in which the same extend angularly downward to a position in which the same extend angularly upward, said spring releasably maintaining the arms selectively in either of said positions thereof, the lower surface of said nose in the last-named position of said arms engaging the upper surface of said lug.
2. A device according to claim 1, the lower edge of said one of said ears sloping upward in a direction outward from said plate, said lug having said upper surface thereof flat and parallel with said last-named lower edge, said lower. surface of said nose being flat, said surfaces being in mutual contact when said arms are in said last-named position thereof.
References Cited in the file of this patent UNITED STATES PATENTS
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|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3116946 *||May 23, 1962||Jan 7, 1964||Deloume Jean Etienne||Door check|
|US3129969 *||Dec 29, 1961||Apr 21, 1964||Kuo Chi Sheng||Combination door holder and stopper|
|US3783658 *||Feb 23, 1972||Jan 8, 1974||Wada W||Door lock|
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|US5799367 *||Oct 5, 1995||Sep 1, 1998||Triangle Brass Manufacturing Company||Floor mounted doorstop having adjustable rigidity|
|US6035487 *||Oct 13, 1998||Mar 14, 2000||Triangle Brass Manufacturing Co.||Universal door stop|
|US20140345083 *||May 22, 2014||Nov 27, 2014||Maxtech Consumer Products Limited||Door stay|
|WO1989002509A1 *||Sep 9, 1988||Mar 23, 1989||Brian Dennis Harrison||Doorstop|
|U.S. Classification||292/338, 292/79, 16/86.00C, 292/DIG.150|
|Cooperative Classification||E05C17/443, Y10S292/15|