US3824649A - Door bumper - Google Patents

Door bumper Download PDF

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Publication number
US3824649A
US3824649A US31193272A US3824649A US 3824649 A US3824649 A US 3824649A US 31193272 A US31193272 A US 31193272A US 3824649 A US3824649 A US 3824649A
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United States
Prior art keywords
bumper
wall
doorknob
cushion member
mounted
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Inventor
D Kempf
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D Kempf
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Publication date
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Priority to US31193272 priority Critical patent/US3824649A/en
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Publication of US3824649A publication Critical patent/US3824649A/en
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Application status is Expired - Lifetime legal-status Critical

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00Springs
    • F16F1/36Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/42Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing
    • F16F1/422Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing the stressing resulting in flexion of the spring
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00Braking devices, e.g. checks; Stops; Buffers
    • E05F5/06Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2236/00Mode of stressing of basic spring or damper elements or devices incorporating such elements
    • F16F2236/02Mode of stressing of basic spring or damper elements or devices incorporating such elements the stressing resulting in flexion of the spring
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T16/00Miscellaneous hardware [e.g., bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance, etc.]
    • Y10T16/61Closure checks
    • Y10T16/625Spring
    • Y10T16/628Rubber
    • Y10T16/6285Rubber cushioned

Abstract

A wall mounted door knob bumper having a resilient cushioning member attached to a flexible adhesive carrying backing member such as a flexible sheet of plastic attached to and extending beyond the periphery of the cushioning member to form a decorative border. The cushioning member may be made in various cross-sectional configurations some of which are solid and some having apertures therein. The exposed portion of the backing member may be made in any number of different designs such as flowers, geometric patterns, or any other desired motif. The bumper is attached to a wall simply by peeling a protective cover off the adhesive backing and pressing the bumper in the desired location on a wall where it will be contacted by a doorknob.

Description

United States Patent 1191 Kempf 1111 3,824,649 July 23, 1974 4] DOOR BUMPER 5,161 9/1909 Great Britain 16/86 A [76] Inventor: Donald F. Kempf, 435 N. Lincoln 51,, O C lif. 92666 Zrimary Examiner--Pva,u:lR. Glglllilamdd ssistant Examineri iam y ane [22] 1972 Attorney, Agent, or Firm-Paul E. Milliken [21] Appl. No.: 311,932

[57] ABSTRACT v C(Ill A Wall mounted door knob bumper having a resilient [58] a 48/205 cushioning member attached to a flexible adhesive {61/167 carrying backing member such as a flexible sheet of plastic attached to and extending beyond the periph- [56] References Cited ery of the cushioning member to form a decorative 1 border. The cushioning member may be made in vari- UNITED STATES PATENTS I ous cross-sectional configurations some of which are 329,321 10/1885 Leger 292/D1G. 8 solid and some having apertures therein The exposed 2,115,449 6/1937 Pradt..... 248/205 A portion f the ki e b may b d i any g iZ Q number of different designs such as flowers, geometric an patterns, or any other desired motif. The bumper is 3 409,257 3/1967 Elm 248/205 A 3 687 792 8/1972 Ruff 161/406 x attached to a wall SmPIY by Peelmg a Pmtectve off the adhesive backing and pressing the bumper in FOREIGN PATENTS OR APPLICATIONS the desired location on a wall where it will be con- 1,169,10O 0/1969 Great Britain 161/167 tacted by a doorknob. 1,050,987 2/1964 Great Britain 16/86 R 913,107 9/1960 Great Britain 248/205 A 4 Claims, 10 Drawing Figures J i I -c-- 1 noon BUMPER PRIOR ART OBJECTS OF THE INVENTION 3 It is an object of this invention to provide a door knob bumper which is simple in construction, inexpensive to manufacture, attractive in appearance and easily attached to the wall without damaging the wall or leaving any holes in the wall.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front-elevational view showing one embodiment of the invention mounted on a wall;

FIG. 2 is a cross-sectional view taken on line 22 of FIG. 1;

FIG. 3 is a side viewof the embodiment shown in FIG. 1 with a portion of the cover sheet peeled back from the adhesive layer;

FIG. 4 is a cross-sectional view through another embodiment of a cushioning member having a recessed center;

FIG. is a cross-sectional view through another type of cushioning member having a hole through the center;

FIG. 6 is a cross-sectional view through another type of cushioning member;

FIG. 7 is a cross-sectional view through another type of cushioning member having a rearwardly facing cavit FIG. 8 is a cross-sectional view through the cushioning member shown in FIG. 7 but showing the cushion-- ing member under compression from a doorknob;

FIG. 9 is a front elevational view of another type of cushioning member having radially outwardly extending petal-like members; and

FIG. is a cross-sectional view taken on line l0l0 of FIG. 9.

DESCRIPTION OF THE PREFERRED EMBODIMENT S In FIGS. 1 and 2 of the drawings a bumper 1 is attached to a wall 2. The bumper 1 has a resilient cushion 3 made preferably of rubber, deformable plastic, or any other suitable material having' the desired resilient properties to properly cushion the blow of a doorknob and protect the wall from damage. The cushion 3 is shown in FIGS. 1 through 3 as being dome shaped and having a flat back side 4 to which is adhered a backing sheet 5 made of flexible plastic or other suitable material. A layer 6 of pressure sensitive adhesive covers the back side of the sheet 5. The adhesive layer 6 is covered by a removeable protective cover sheet 7 shown partially peeled back in FIG. 3. By removing the cover sheet 7 and pressing the bumper 1 against the wall the adhesive layer causes the bumper to stick to the wall without the need for any other type of fastener.

The backing sheet 5 extends beyond the periphery of the cushion 3 and forms a decorative border around the cushion. The sheet 5 is made with a contrasting peripheral contour to that of the bumper 3. In FIG. 1 sheet 5 has a peripheral contour in the shape of flower petals and the round bumper 3 serves as the center portion of the simulated flower. The sheet 5 could of course be made in various shapes and colors and combined with other shapes of cushions as will hereafter be described.

In FIG. 4 a cushion 8 of another shape is shown having a round peripheral ring portion 9 surrounding a round recess 10 in the center thereof on the front side of the cushion 8 and having a flat back side 11.

A cushion 12 is shown in FIG. 5 in the shape of a ring having a rounded front portion 13 and a flat back side 14.

A cushion 15 in FIG. 6 is similar to the cushion 8 in FIG. 4 but it has a ring 16 in which the sides are tapered at a wider angle with respect to each other than they are in the ring 9. The ring 16 surrounds a centrally located round recess 17: on the front side and the back side 18 of the ring 15 is flat.

FIGS. 7 and 8 shows another embodiment of bumper 19 having a peripheral base ring portion 20, an intermediate portion 21 connecting the ring portion 20 to a round center portion 22 which is contacted by a doorknob 23 shown in FIG. 8. The base ring portion 20 is substantially triangular in cross section and tapers from a wide flat back side 24 to a thin apex where it joins with the thin intermediate portion 21. The center portion 22 has a rearwardly facing conical portion 25 with an apex'26 facing rearwardly of the bumper 19. The taper of the conical portion 25 and the inner surface of ring portion 20 is such that it defines an annular cavity 27 on the back side of the bumper 19.

The cross sectional design of the bumper 19 is such that when the door knob 23 contacts the center portion 22 of bumper 19, it drives the center portion rearwardly into the cavity 27. As the center portion 22 first moves rearwardly, the intermediate portion 21 is drawn rearwardly and radially inwardly by the center portion 22 in a rolling motion. This movement offers some resistance to the doorknob and hence starts to slow down ,the rearward travel of the doorknob gradually. As the center portion 22 continues to move rearwardly the apex 26 of the conical portion 25 contacts the backing sheet 28 next to the wall 29 and as the conical portion 25 is compressed against the backing sheet 28 it progressively exerts more and more resistance to the force of the doorknob. This is because the manner in which the conical portion 25 is tapered. When the apex 26 first touches the backing sheet 28 there is little resistance since the diameter of the conical portion is less at that position. As the conical portion is moved farther rearwardly there is a larger diameter of the conical portion under compression and therefore the resistance increases progressively and the diameter under compression increases. The result of this cross-sectional design is that the movement of the doorknob is slowed down gradually but at an increasing rate as the knob 23 pushes the center portion 22 further rearwardly. This means that the doorknob will not meet abrubt resistance which will cause it to rebound abruptly after v 3 striking the cushion 19 and strike someone passing through the door. Depending upon the resilint properties of the material from which the bumper 19 is made it may be desirable to have pressure release ports between the cavity 27 and the outside of the bumper 19 to release excessive pressure build-up in the cavity when thedoorknob pushes the center portion 22 rearwardly as shown in FIG. 8. In some instances such ports may not be needed and for the sake of simplicty have not been shown in the present drawings.

FIGS. 9 and show an another embodiment of cushion 30 having a round, relatively thick center portion 31 having a flat back side 32 and a domed front side 33. A plurality of petal shaped members 34 extend radially outwardly from the center portion 31 and are integral therewith. Each petal member is thickest near its base and tapers to a thinner dimension at its tip. The

wardly in such a position that the outer tips 35 are first contacted by the doorknob when it strikes the bumper cushion 30. Since the tips are thinner the doorknob meets with less resistance at first contact and then progressively greater resistance as the petals 34 are bent rearwardly and the knob contacts thicker portions of the petals. Thus the cushion 30 provides gradually increasing resistance to the movement of the doorknob based on a similar principle to that illustrated in FIGS. 7 and 8.

While certain'embodiments have been shown and described herein for the purposes of illustrating the invention it will beobvious that various other modifications and combinations may be made in the embodiments shown. herein without departing from the scope of the invention. Both the backingsheets and cushionsmay be made in various shapes and colors and from various materials so long as they have the necessary physical properties to function as required.

I claim:

l. A wall mounted doorknob bumper comprising:

A. a resilient cushion member having a substantially flat rear surface,

B. a backing sheet of thin flexible material adhered to the rear surface of the cushion member and extending radially outwardly beyond the periphery of the cushion member to form a border therearound which has a peripheral contour of contrasting shape to that of the cushion member,

C. said backing sheet having rearwardly facing pressure sensitive adhesive for securing the bumper on a wall surface when the bumper is pressed thereagainst and a removeable cover sheet to protect the adhesive until the bumper is mounted on a wall,

D. said cushion member being shaped in a configuration to project outwardly from the wall on which it is mounted and engage a doorknob of an opened door, thereby preventing damage to the wall, said cushion member comprising a relatively thick peripheral base ring portion of substantially triangular cross-section and having a flat rear surface for attachment to the backing sheet, a round center petals in cross-section curve forwardly and radially outportion, the rear of which is of substantially conical shape with the apex extending rearwardly to make contact with the backing sheet when the center section is pushed rearwardly by a doorknob striking it, and a relatively thin intermediate portion joining the base ring portion and center portion and supporting the center portion a spaced distance from the backing sheet, said intermediate portion being sufficiently flexible to resistably permit the center portion to move rearwardly when struck by a doorknob and seat temporarily against the backing sheet and the .wall supporting the backing sheet,

E. all components of the bumper being cooperatively flexible to permit the bumper to conform to any surface irregularities of the wall on which the bumper is mounted.

2. A wall mounted doorknob bumper as claimed in claim 1 wherein the backing sheet is made of plastic.

3. A wall mounted doorknob bumper comprisingi A. a resilient cushion member having a substantially flat rear surface, B. a backing sheet of thin flexible material adhered to the rear surface of the cushion member and extending radially outwardly beyond the periphery of the cushion member to form a border therearound which has a peripheral contour of contrasting shape to that of the cushion member, C. said backing sheet having rearwardly facing pressure sensitive adhesive for securing the bumper on a wall surface'when the bumper is pressed thereagainst and a removeable cover sheet to protect the adhesive until the bumper is mounted on a wall, D. said cushion member being shaped in a configuration to project outwardly from the wall on which it is mounted and engage a doorknob of an opened door, thereby preventing damage to the wall, said cushion member having a round center portion and a plurality of radially outwardly extending members integral therewith, said members being thinner at their outer extremities than at their radially inner ends to provide progressively greater flexibility from the center portion toward the outer extremities of the members, the outer extremities of the members being spaced a greater distance from the wall on which the bumper is mounted than the radially inner ends of the members, whereby a doorknob hitting the bumper first contacts the thinner outer extremities of the members and then bends the members toward the wall so that it contacts progressively thicker and stiffer portions of the members and thereby the resistance to the doorknob is progressively increased, E. all components of the bumper being cooperatively flexible to permit the bumper to conform to any surface irregularities of the wall on which the bum- I per is mounted. 4. A wall mounted doorknob bumper as claimed in claim 3 wherein the backing sheet is made of plastic.

Claims (4)

1. A wall mounted doorknob bumper comprising: A. a resilient cushion member having a substantially flat rear surface, B. a backing sheet of thin flexible material adhered to the rear surface of the cushion member and extending radially outwardly beyond the periphery of the cushion member to form a border therearound which has a peripheral contour of contrasting shape to that of the cushion member, C. said backing sheet having rearwardly facing pressure sensitive adhesive for securing the bumper on a wall surface when the bumper is pressed thereagainst and a removeable cover sheet to protect the adhesive until the bumper is mounted on a wall, D. said cushion member being shaped in a configuration to project outwardly from the wall on which it is mounted and engage a doorknob of an opened door, thereby preventing damage to the wall, said cushion member comprising a relatively thick peripheral base ring portion of substantially triangular crosssection and having a flat rear surface for attachment to the backing sheet, a round center portion, the rear of which is of substantially conical shape with the apex extending rearwardly to make contact with the backing sheet when the center section is pushed rearwardly by a doorknob striking it, and a relatively thin intermediate portion joining the base ring portion and center portion and supporting the center portion a spaced distance from the backing sheet, said intermediate portion being sufficiently flexible to resistably permit the center portion to move rearwardly when struck by a doorknob and seat temporarily against the backing sheet and the wall supporting the backing sheet, E. all components of the bumper being cooperatively flexible to permit the bumper to conform to any surface irregularities of the wall on which the bumper is mounted.
2. A wall mounted doorknob bumper as claimed in claim 1 wherein the backing sheet is made of plastic.
3. A wall mounted doorknob bumper comprising: A. a resilient cushion member having a substantially flat rear surface, B. a backing sheet of thin flexible material adhered to the rear surface of the cushion member and extending radially outwardly beyond the periphery of the cushion member to form a border therearound which has a peripheral contour of contrasting shape to that of the cushion member, C. said backing sheet having rearwardly facing pressure sensitive adhesIve for securing the bumper on a wall surface when the bumper is pressed thereagainst and a removeable cover sheet to protect the adhesive until the bumper is mounted on a wall, D. said cushion member being shaped in a configuration to project outwardly from the wall on which it is mounted and engage a doorknob of an opened door, thereby preventing damage to the wall, said cushion member having a round center portion and a plurality of radially outwardly extending members integral therewith, said members being thinner at their outer extremities than at their radially inner ends to provide progressively greater flexibility from the center portion toward the outer extremities of the members, the outer extremities of the members being spaced a greater distance from the wall on which the bumper is mounted than the radially inner ends of the members, whereby a doorknob hitting the bumper first contacts the thinner outer extremities of the members and then bends the members toward the wall so that it contacts progressively thicker and stiffer portions of the members and thereby the resistance to the doorknob is progressively increased, E. all components of the bumper being cooperatively flexible to permit the bumper to conform to any surface irregularities of the wall on which the bumper is mounted.
4. A wall mounted doorknob bumper as claimed in claim 3 wherein the backing sheet is made of plastic.
US31193272 1972-12-04 1972-12-04 Door bumper Expired - Lifetime US3824649A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6296237B1 (en) * 1998-11-24 2001-10-02 Tokai Rubber Industries, Ltd. Bump stopper
US20060244286A1 (en) * 2005-05-02 2006-11-02 Meyers Jason A Resilient wedge for a vehicle door wedge assembly
US20070006419A1 (en) * 2005-07-07 2007-01-11 Forrest Paul B Doorstop
US20080272621A1 (en) * 2007-05-03 2008-11-06 177197 Canada Ltee Door shock absorber
US20090195028A1 (en) * 2008-02-02 2009-08-06 Ford Global Technologies,Llc Self-Adjusting Automotive Radiator Grille Support
WO2012071691A1 (en) * 2010-10-28 2012-06-07 北京世博金属制品有限公司 Elastic buffer
US20170037669A1 (en) * 2014-03-31 2017-02-09 Grass Gmbh & Co. Kg Device for influencing the movement of a furniture part, and a furniture part

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US329321A (en) * 1885-10-27 legee
GB1050987A (en) * 1900-01-01
GB190905161A (en) * 1909-03-03 1910-01-06 George Looms Improvements in or relating to Pneumatic Doors Stops and Silencers.
US2115449A (en) * 1937-06-28 1938-04-26 Marathon Paper Mills Co Display support
US2899703A (en) * 1959-08-18 Door stop
GB913107A (en) * 1959-10-01 1962-12-19 Lionite Specialities Ltd Improvements in or relating to articles having adhesive backing
US3386125A (en) * 1965-10-14 1968-06-04 Emhart Corp Door bumper
US3409257A (en) * 1967-03-10 1968-11-05 Minnesota Mining & Mfg Cable clip with pressure sensitive attaching means
GB1169100A (en) * 1966-09-30 1969-10-29 Minnesota Mining & Mfg Adhesive Pads and Method of Making and Using Them
US3687792A (en) * 1969-11-25 1972-08-29 Standard Products Co Decorative trim strip

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US329321A (en) * 1885-10-27 legee
GB1050987A (en) * 1900-01-01
US2899703A (en) * 1959-08-18 Door stop
GB190905161A (en) * 1909-03-03 1910-01-06 George Looms Improvements in or relating to Pneumatic Doors Stops and Silencers.
US2115449A (en) * 1937-06-28 1938-04-26 Marathon Paper Mills Co Display support
GB913107A (en) * 1959-10-01 1962-12-19 Lionite Specialities Ltd Improvements in or relating to articles having adhesive backing
US3386125A (en) * 1965-10-14 1968-06-04 Emhart Corp Door bumper
GB1169100A (en) * 1966-09-30 1969-10-29 Minnesota Mining & Mfg Adhesive Pads and Method of Making and Using Them
US3409257A (en) * 1967-03-10 1968-11-05 Minnesota Mining & Mfg Cable clip with pressure sensitive attaching means
US3687792A (en) * 1969-11-25 1972-08-29 Standard Products Co Decorative trim strip

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6296237B1 (en) * 1998-11-24 2001-10-02 Tokai Rubber Industries, Ltd. Bump stopper
US20060244286A1 (en) * 2005-05-02 2006-11-02 Meyers Jason A Resilient wedge for a vehicle door wedge assembly
US20070006419A1 (en) * 2005-07-07 2007-01-11 Forrest Paul B Doorstop
US7412751B2 (en) * 2005-07-07 2008-08-19 Paul Bradley Forrest Doorstop
US20080272621A1 (en) * 2007-05-03 2008-11-06 177197 Canada Ltee Door shock absorber
US20090195028A1 (en) * 2008-02-02 2009-08-06 Ford Global Technologies,Llc Self-Adjusting Automotive Radiator Grille Support
US7758106B2 (en) * 2008-02-02 2010-07-20 Ford Global Technologies, Llc Self-adjusting automotive radiator grille support
WO2012071691A1 (en) * 2010-10-28 2012-06-07 北京世博金属制品有限公司 Elastic buffer
US20170037669A1 (en) * 2014-03-31 2017-02-09 Grass Gmbh & Co. Kg Device for influencing the movement of a furniture part, and a furniture part
US9890574B2 (en) * 2014-03-31 2018-02-13 Grass Gmbh & Co. Kg Device for influencing the movement of a furniture part, and a furniture part

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