Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS2451194 A
Publication typeGrant
Publication dateOct 12, 1948
Filing dateOct 3, 1945
Priority dateOct 3, 1945
Publication numberUS 2451194 A, US 2451194A, US-A-2451194, US2451194 A, US2451194A
InventorsBraun Frank Conrad
Original AssigneeBraun Frank Conrad
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Adhesive-containing suction cup
US 2451194 A
Previous page
Next page
Description  (OCR text may contain errors)

Oct. 12, 1948. j, BRAUN 2,451,194


This invention relates to suction devices or so-called suction cups of the kind that will adhere by suction to a smooth surface when pressed against it and that have means for attachment to some object which it is desired to support on the surface.

The usual type of suction cup cannot be relied upon to maintain its suction indefinitely and is likely to lose its grip on the surface to which it is applied at any time; and moreover it does not usually adhere to the surface with enough tenacity to permit relatively heavy objects to be supported by it.

The principal object of this invention is to provide an improved suction device or suction cup that will adhere to the surface to which it is applied more firmly and more permanently than the usual type of suction cup. A further object is to provide a suction cup which will adhere to the surface to which it is applied with enough tenacity and permanence to permit relatively heavy objects to be supported by it for a long period of time.

According to the invention the usual cupped disc portion of the suction device carries a part within which there is a reservoir that contains a small quantity of a fluid adhesive. A small slit in the rubber wall of the cupped disc portion communicates with the adhesive reservoir and opens through the concave face of the cupped disc. This slit normally remains closed siifiiciently to prevent escape of the adhesive from the reservoir; but before applying the suction device to the surface to which it is to be attached, the user causes some of the adhesive to be emruded through the slit to the concave face of the cupped disc, in the manner hereinafter described, and then spreads it over the face. The adhesive at the edge portion of the cupped disc functions to seal the suction and thereby insures a permanent and strong adhesion of the suction device to the surface.

The invention is illustrated in the accompanying drawing, in which:

Figure 1 is a side elevation of a suction device or suction cup embodying the invention;

Fig. 2 is a vertical section of the suction cup shown in Fig. 1;

Fig. 3 is a top plan view of the suction cup of Fig.1; and

Fig. 4 shows in vertical section a modified way in which the adhesive reservoir may be formed.

As will be seen from Fig. 1 the suction device, in its preferred form, has the same outward appearance as a well-known type of rubber suction cup having a button or knob to which the object to be supported by the suction cup may be attached. It has a cupped disc I with a concave suction face 2 and a button or knob 3 at the convex side of the disc connected to the disc by means of a shank portion 4. The entire device is preferably made of rubber or some other similar resilient material.

As is well understood, the usual suction cup is applied to a smooth surface by pressing the concave suction face of the disc against the surface by means of the knob, the suction created under the disc being relied upon to retain the suction cup affixed to the surface.

In accordance with the preferred form of my invention I utilize the knob 3 and its shank for the above-mentioned adhesive reservoir. For this purpose the knob is made hollow as shown at 3 in Fig. 2 and the shank 4 is also made hollow, i. e. is provided with a passage 4' which leads from the chamber in the knob to the convex side of the disc. The reservoir formed within the knob and shank is filled with an adhesive 5. The disc 1 is provided with a slit 6 which communicates with the adhesive reservoir and opens through the concave face 2 of the disc. The resiliency of the rubber keeps the slit normally closed, or sufficiently so, to prevent the adhesive in the reservoir from flowing through it. For convenience in manufacturing the device the knob and shank may be formed separately from the disc, as shown in Fig. 2, and vulcanized to it. The adhesive may be placed in the reservoir before the parts are vulcanized together, or it may be injected into the reservoir through the slit 6 after the device is otherwise completed.

To apply the suction cup to the surface to which it is to be attached some of the adhesive is first forced from the reservoir to the concave face of the cupped disc and spread uniformly thereon. This may be conveniently accomplished by bending the edges of the cupped disc backwardly by the thumbs and forefingers while exerting pressure on the top of the knob 3 with one of the other fingers. the knob is made relatively thin, as shown in Fig. 2, so that it will yield to the pressure exerted by the finger. The backward bending of the edges of the disc will open the slit 8 and the pressure exerted on the top of the knob will extrucle some of the adhesive through the slit to the concave face of the disc. The adhesive may then be spread evenly over the concave face of the disc with the finger, or with any suitable instrument, care being taken to see that the The top wall I of 3 adhesive is spread over the face of the disc all the way to its extreme edge. After the adhesive has been extruded to the concave face of the disc it will clog the slit and a suction will be created under the disc in the usual way when the disc is pressed against the surface to which it is to be affixed. The adhesive around the edge portion of the concave face of the disc will seal the suction or vacuum and prevent ingress of air into the space between the disc and the suit-- face to which it is attached, thus making the grip of the disc on the surface strong and prac tically permanent.

The adhesive employed may be of any suitable fluid type provided it is not' so thin as to leak through the slit 6 and is not so thick as to make it difiicult to extrude it through the slit when pressure is applied to the knob. Preferably, the adhesive is of a type which will remain fluid or flowable when confined within the adhesive reservoir but when applied to the suction face of the disc will dry after a short period of time around the peripheral edge portion of the disc and firmly cement it to the surface to which the suction cup is attached.

Fig. 4 shows a modified form of the suction cup in which the disc, knob and shank are molded in one piece, the knob and shank being madenollow, as previously described, but the top wall 7' of the knob being formed separately and later positioned by cementing or vulcanizing it in place. As shown, this upper wall of the knob is preferably made thinner than the side walls so that it will readily'yield to the pressure required to extrucle the adhesive from the reservoir. The interior surface of the knob where it meets the top wall 1' is preferably out :back to form a'ioevel or clearance, as shown at 8, to perrni't a relatively large amount of inward movement of the top wall when it is depressed to extrude the adhesive. I

In both forms of the invention the knob and shank portion have sufficient lateral rigidity to enable them to support a relatively'heavy object on the surface to which the suction cup is affixed, even though the top of the knob is sufficiently flexible to permit it to be depressed with the finger for the purpose of extruding some of the adhesive as above described.

I claim:

1. A suction cup comprising a cupped disc, a knob on the convex side of the disc, a shank por- 4 tion connecting the knob to the disc, all of said parts being made of resilient material, said knob and shank being hollow to form an adhesive reservoir, adhesive in the reservoir, a slit in the disc communicating with the adhesive reservoir and opening through the concave suction face of the disc, said slit normally being maintained closed by the resiliency of the disc material, and the top wall of the knob being adapted to yield under pressure to extrude some of the adhesive through the slit to the concave face of the disc.

2. .A suction cup made of resilient material and comprising a cupped disc, a projecting portion on the convex side of the disc, said projecting portion being h'oll-ow to form an adhesive reservoir, adhesive in said reservoir, and a slit in s'aid disc conununicating with the adhesive reservoir and opening through the concave suction face of with one of the other two parts and vulcanized to the second, the hollow interior of said projecting portion constituting an adhesive reservoir,

adhesive in said reservoir, and a slit in said disc communicating with the adhesive reservoir and opening through the concave suction face of the disc, said adhesive reservoir extending upwardly to near the'top end of said projecting portion whereby said top wall is thin enough to yield.

under pressure applied 't-o it by the {thumb or finger to extrude some of the. adhesive through said slit to the concave side ofthe disc;


REFERENCES orrsn The following references are of record in the filejof this patent: 7 V

UNITED STATES PATENTS Number 7 Date 7 Name 1,859,893 Ritz-Woller i May 24, 1932 1,885,501

Wilson. i Nov. 1; 193-2!

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1859893 *Nov 14, 1931May 24, 1932Ritz-Woller Oliver CSuction cup
US1885501 *Jun 18, 1930Nov 1, 1932Crystal Tissue CompanyFlat sheet dispensing package
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2538658 *Oct 31, 1945Jan 16, 1951Ohio Rubber CoResilient mounting for motors and the like
US2557434 *Jul 25, 1949Jun 19, 1951Hoverder Wallace PSupporting fixture
US2666354 *Jun 1, 1950Jan 19, 1954Dim JacobSealing assembly
US2671441 *Sep 10, 1948Mar 9, 1954Clyde W HarrisVariable heat insulating apparatus and solar heating system comprising same
US2739632 *Jul 26, 1954Mar 27, 1956Davol Rubber CoFountain bag support
US3061895 *Aug 5, 1960Nov 6, 1962Pawling Rubber CorpResilient caulking seal
US3109619 *Dec 29, 1958Nov 5, 1963Martin KrugSupporting means and method for toothbrushes and the like
US3291094 *May 17, 1965Dec 13, 1966Nolte Albert C JrCleat device for water borne vessel
US3338293 *Aug 16, 1965Aug 29, 1967William R HohmannAutomobile windshield protecting device
US3675813 *Jul 16, 1970Jul 11, 1972Morgan Johnson TCover for waste container
US4101104 *Dec 14, 1976Jul 18, 1978The Raymond Lee Organization, Inc.Utility knob
US4138807 *Mar 30, 1978Feb 13, 1979Martin TrachtenburgGlazing strip and method
US4309016 *Mar 30, 1978Jan 5, 1982Tendler Robert KWall hanger
US4338151 *Sep 19, 1980Jul 6, 1982Physical Systems, Inc.Method of securing an adhesive attachment assembly to a substrate
US4389035 *Nov 6, 1980Jun 21, 1983Freeman James DHanger-type ceiling-attachable support having self-dispensing cement
US4390576 *Apr 16, 1982Jun 28, 1983Physical Systems, Inc.Adhesive attachment assembly
US4421288 *Jan 19, 1981Dec 20, 1983Henry BlaszkowskiSuction cup
US4668546 *Sep 4, 1985May 26, 1987Physical Systems, Inc.One-piece plastic molding
US4778702 *May 15, 1986Oct 18, 1988Physical Systems, Inc.Disk-shaped footplate
US4822656 *Sep 24, 1986Apr 18, 1989Physical Systems, Inc.Fixture for securing an adhesive attachment to a substrate
US4830558 *Aug 17, 1987May 16, 1989Theodore J. Sweeney & Co.Adhesively securable fastener
US4842912 *Feb 8, 1988Jun 27, 1989Physical Systems, Inc.Adhesive attachment and mounting fixture
US4923159 *Dec 22, 1988May 8, 1990Wang Hsug FangHook seat with a separable hook
US4991806 *Oct 12, 1988Feb 12, 1991Nakamura Jeffrey MSuction mounted clip
US4999887 *Nov 16, 1989Mar 19, 1991Trw United-Carr Gmbh & Co.Plastic base plate
US5044852 *Feb 18, 1988Sep 3, 1991Theodore Sweeney & Company, Inc.Vacuum fixed adhesively secured fastener
US5535506 *Aug 4, 1994Jul 16, 1996Geisler Ganz CorporationApparatus for the right-side up application of jewels to fabric
US5631426 *Aug 28, 1995May 20, 1997The Goodyear Tire & Rubber CompanySensors for vibration detection
US5765706 *Sep 15, 1995Jun 16, 1998Senetics, Inc.Flush mounted indicator device
US5909758 *Nov 21, 1996Jun 8, 1999Kitamura; AkioSupporting tool and method of installing same
US5964437 *Oct 27, 1997Oct 12, 1999Belokin; PaulMounting support
US6012888 *Aug 8, 1997Jan 11, 2000Theodore Sweeney & Co.Adhesive fastener and method
US7051885Apr 7, 2003May 30, 2006Displays By Martin Paul, Inc. - Creative CenterCross-merchandising display shelf
US7740221Jul 24, 2006Jun 22, 2010Sheffield Jr Douglas MSuction-mountable display device having a periphery and a bend adjacent the periphery
US8728602Apr 28, 2008May 20, 2014The Charles Stark Draper Laboratory, Inc.Multi-component adhesive system
US20090090714 *Dec 6, 2007Apr 9, 2009Oliver AlbersCanister with Flexible Airtight Lid
USRE30930 *Jun 30, 1980May 18, 1982 Glazing strip and method
EP0401212A1 *Feb 18, 1988Dec 12, 1990Theodore J SweeneyVacuum fixed adhesively secured fastener.
EP0775462A2Nov 25, 1996May 28, 1997Hokumei Co., Ltd.Supporting tool and method of installing same
WO2014009595A1 *Jul 11, 2013Jan 16, 2014Tyynelae SanttuSuction cup
U.S. Classification248/544, 206/829, 248/205.6, 206/813, 52/390, 248/205.3, 411/258, 248/205.4
International ClassificationF16B11/00, F16B47/00
Cooperative ClassificationF16B47/00, F16B11/006, Y10S206/813, Y10S206/829
European ClassificationF16B47/00