US1983784A - Flexible doorstop - Google Patents

Description

Patented Dec. 11, 1934 I UNITED STATES "PATENT -o1=-1=rE-- FLEXIBLE DOORSTOP Robert C. Watkins and Joseph May, San Francisco, Calif.

Application September 30, 1933, Serial No. 691,662

1 Claim. (01. 16-85) Our invention relates to improvements in flexits free end. The wire 2 is formed into a cylinible door stops, and it consists of the combinadrical coil indicated generally at 4, the adjacent tions, constructions and arrangements hereinafter coils contacting with each other. From the cyldescribed and claimed. inder 4 the wire 2 is wound into a number of 5 In the rigid type of door stop there is no poscoils, each coil gradually increasing in diameter 5 sibility of the door stop yielding whenstruck from and forming a conical shaped portion 5 that the side, as for example when a cleaning implemerges into the cylindrical portion 4. At the ment, such as a vacuum sweeper or a mop, base of the cone 5 the coils are spaced from each strikes the side of the door stop. The result is other as indicated at 6.

that the door stop is frequently broken. The Figures 2 and 3 clearly show the wire 2 dis- 10 principal object of the present invention is to posed at the base as being formed into a numprovide a flexible door stop which will bend latber of small loops or eyes 7. Fastening screws erally when struck from the side, and which will 8 are insertable in these loops and may be screwed then return to: normal position. Such a type of into a wall 9 for supporting the flexible door stop door stop will remain indefinitely secured to the the desired distance above the floor 10. 5 supporting surface. The button 3 is preferably made of rubber and In rigid door stops very little yielding is perhas a semi-spherical head 11 with a cylindrical mitted in the direction of the length of the stop. shank 12 projecting th rom. The diameter of When a door strikes such a stop it generally rethe shank is slightly greater than the inner diambounds a considerable distance. In our flexible eter of the cylind c portion s permits 20 door stop we form the device from a wire, and the shank to be screwed into the portion4 and the fashion this wire into coils. Adjacent coils conrubber surface will give, a v oves f ed tact with each other, with the exception of a few t e n Complementary to t Coils forming the coils disposed near the base. These coils are Cylindrical portion ThiS Construction P spaced a slight distance from each other, and vents the button from being removed without 25 when a door strikes the end of the door stop the first rotating it so as to unscrew it from the p spaced coils will give and act as a snubber and tion The Coils in the Po 4 preVent h bring the door to a quick, quiet stop with pracs a k f m being m v d l ud al y. tically no rebound. From the foregoing description of the various The device saves the hinges of the door in that parts of the device, the operation thereof may 30 it gently brings the door to a stop rather than be readily understood. abruptly stopping the swinging movement of the The door stop will flex when struck on the door. The device is also silent in operation beside and then will resume its normal position. cause the noise caused by an abrupt stop is elim- This flexing strain is not transmitted to the base inated by the door being brought to a gradual and therefore the device will have no tendency 35 stop. to be pulled from the supporting wall. When a The device is extremely simple in construction force is exerted in the direction of the axis of and is made in two pieces, one a coil of wire the door stop the spaced loops 6 will permit the shaped in a particular manner, and the other a stop to compress a slight distance in the direcrubber button secured to the free end of the coil. tion of its length. This movement will bring 40 Other objects and advantages will appear in the door to a quick stop without unnecessarily the following specification, and the novel feajarring the door. The hinges on the door are tures of the device will be particularly pointed therefore not subjected to undue strain. The reout in the appended claim. bounding of the door is also eliminated, and the 5 Our i vent is illustrated in the c p ydevice will operate silently because of this paring drawing forming apart of this application, in ticular manner of bringing the door to a stop.

which. The shank 12 of the button 3 is made long enough Figure 1 is a side elevation of the device shown to prevent the accidental removal of the button operatively applied to a wall; from the device. The cone 5 gives a firm support Figure 2 is a bottom plan view of the device; to the button 3. 50 and While we have shown only the preferred form of Figure 3 is a top plan view thereof. our invention, it should be understood that vari- In carrying out our invention we provide a flexous changes or modifications may be made within ible door step indicated generally at 1, and made the scope of the appended claim without departfrom a wire 2 and having a button 3 secured to ing from the spirit of the invention. 55

We claim:

A door bumper comprising a wire formed into a cylindrical coil, the loops of the coil contacting with each other, a rubber button having a shank 5 threaded into the cylindrical portion, the wire being formed into a frusto-conical portion, the loops ofthe conical portion for the greater portion of its length contacting with each other, whereby a door stop is formed that is rigid in the direction of its axis but flexible when struck from the side, a few loops adjacent to the base of the conical portion being spaced from each other for allowing the bumper to be compressed slightly when struck a blow in the direction of its axis, and means for securing the bumper to a support.

ROBERT C. WATKINS. JOSEPH MAY.

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