CA1246805A - Sink fastening assembly - Google Patents

Sink fastening assembly

Info

Publication number
CA1246805A
CA1246805A CA000443769A CA443769A CA1246805A CA 1246805 A CA1246805 A CA 1246805A CA 000443769 A CA000443769 A CA 000443769A CA 443769 A CA443769 A CA 443769A CA 1246805 A CA1246805 A CA 1246805A
Authority
CA
Canada
Prior art keywords
sink
bolt
fastening device
bracket
counter top
Prior art date
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
Application number
CA000443769A
Other languages
French (fr)
Inventor
Felix Q. Cappella
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Waltec Inc
Original Assignee
Waltec Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Waltec Inc filed Critical Waltec Inc
Priority to CA000443769A priority Critical patent/CA1246805A/en
Application granted granted Critical
Publication of CA1246805A publication Critical patent/CA1246805A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03CDOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/32Holders or supports for basins
    • E03C1/33Fastening sinks or basins in an apertured support
    • E03C1/335Fastening sinks or basins in an apertured support the fastening means comprising a screw

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sink And Installation For Waste Water (AREA)

Abstract

ABSTRACT

In the modern household kitchen, it is common to install a sink in the counter top. Protection must be provided against leakage of water into or below the normally waterproof counter top upper surface. In order to accomplish this, proper contact must be provided between the sink rim and the counter top. The present invention ensures that proper contact is maintained by providing a sink fastening device that is attached to the sink prior to placing the sink in the counter. The sink fastening device is easy to install and may be adjusted to compensate for counter tops of varied thickness. The principle of the fastening device and the location of the fastening bracket result in the application of a shear force to the bracket rather than a twisting or pulling force, thus lessen-ing any tendency for the fastening bracket to become detached from the sink.
The bracket has a slot which accommodates a reduced diameter portion of a bolt which is threadably engaged with a claw member. The bolt hangs vertically in the slot and turning the bolt moves the claw up into engagement with the under-side of a counter top whereby force is applied to pull the sink rim down into tight engagement with the top surface of the counter top.

Description

~LZ~L61~5 The present invention relates to a sink fastening device designed to facilitate the installation of a sink in a counter top.
One problem of such an installation is the necessity for providing proper contact between the rim of the sink and the counter top.
The sink is normally composed of stainless steel or porcelainated steel metal. The counter top is usually constructed of wood, plywood or similar material. Protection must be provided against leakage of water under the sink rim which would run beneath the normally waterproof counter top upper surface.
Prior art sink fastening devices'are rather complicated and awkward to assemble. Canadian Patent No. 464,719 of Andrew H. Galley, issued April 25, 1950, discloses a sink fastenin~ device in which sheet metal bearing pla~es are welded to the sides of a sink. Separable bracket members fit into these plates and hold a clamping bolt and a nut. Turning the bolt advances it tc engage the underside of a counter and the nut pushes down on the bracket to pull the sink down. The brackets and bolts are attached after the sink is put in the opening in the counter top. This structure requires a specially formed bearing plate and bracket member and is somewhat complicated to construct.
Canadian Patent No. 815,203 of Karl K. Kaempfer, issued June 17, 1969, discloses a sink fastening device in which base members are welded to a sink. A
bracing member is provided with a slot through which fl scrcw fits. The shaft of the screw A].SO fits in a ll-shaped ~lot locatod on a lip l)ortiol~ o~ tho baso member. Tightening a win~ nu~ on ~he scrow pu;lls a rlln ~lango o~ the sink down against the counter. l'he force is not straight down, as in tho present inVOll-tion, so that it w~u'ld tend to pul] the base member away from the sink, a problem avoided by the present invention.
Canadian Patent No. 878,242 of Edward I. Blake, issued ~ugust 17, ]971, discloses a fastening device in which a saddle is welded to the underside 1~" ~

~L2~6~3~5 of a sink. l~hen in use the saddle would be subject to tension forces, not shear forces as in the present invention. The saddle has a slotted dimple to accommo-date the head of a bolt. A clamp bar is moved up the bolt by a wing nut.
The present invention provides a sink fastening device which is of simple construction and is easy to assemble. Also, the device is attached to the sink prior to placing the sink in the counter and before vision is obstruc-ted by the cabinet.
The sink fastening device comprises a fastening bracket which is secured to the sink, a threaded bolt which is engageable with the fastening bracket, and a metal claw adapted to move vertically along said bolt when said bolt is rotated. The bolt is easily rotated causing the metal claw to move vertically until the claw makes contact with the underside of a counter top.
Further rotation of the bolt causes the sink to be pulled down so that the rim of the sink is brought into firm engagement with the colmter top.
The sink fastening device remains conveniently in the vertical plane, perpendicular to the sink rim and the counter top, even when under considerable stress, due to the broad, flat nature of the metal claw.
The fastening bracket is welded to the sink in the ideal location for enabling the fastening device to exert the optimum force on the sink which has a flexible ledge (rim). The flexible ledge allows the sink to be drawn down to the counter top to create a very tight seal between the sinlc rim and the colmter top, evon if tho colJntor top is not per~octly ~ t. Tho ~ovora~o of ~ho Insten-ing device mit~ lizes thc necessary ~Irivo torque on the bolt.
The principle of the fastening device and t]lC location of the fasten-ing bracket re.sults in the application of a tensile force to the fastening brackot which subjects the weld to a shear force, rather than imposing a twist-ing force on the bracket which would cause a peeling or pulling force on the weld.

The fastening device allows for installation of a sink in counter tops o various thickness, for example up to 2", which is important in the event of installation in a position on the counter where there is additional support material.
The attachment of the bolt directly to the fastening bracket facili-tates the turning action of the bolt and avoids binding, even under considerable stress. Fastening is facilitated because the bolt turns freely in the fastening bracket, but the bolt cannot move up or down. This facilitates the fastening procedure because the head of the bolt remains in essentially the same position throughout the fastening procedure. Unfastening is equally easy.
More particularly, according to the present invention, there is provided a sink fastening device comprising a bolt having a head and a threaded shank, said shank having a first and second portion in between which is a portion of reduced diameter; a fastening bracket adapted to be secured to a sink body and having a slot which accommodates the portion of reduced diameter on said bolt; and a clamp means comprising a metal claw screw-threadably engaged with the shank of said bolt, whereby when the bolt is rotated in a predetermined direction the metal claw moves vertically along said bolt until said claw makes contact with the underside of a counter top, further rotation causing said sink to be pulled down so that the rim o the sink is brought into firm engagement with the counter topO
The advantages and other features of the present invention will be more fully described with reference to the accompanying drawings, in which:
Figure 1 is a perspective view of a portion of a sink installed Oll a counter top and showing a sink fastening device according to the invention;
Figure 2 is a vertical side view showing more clearly the details of the sink fastening device; and , 12~6~

Figures 3, 4, and 5 are perspective views showing how the bolt is engaged with the fastening bracket.
Reference should first be made to Figure 1 in which 10 illustrates a portion of a sink and 11 illustrates a portion of a counter top. A flexible ledge (rim) 12 on the sink 10 allows the sink to be drawn down to the counter top 11 to create a very tight seal between the sink rim and the counter top, even if the counter top is not perfectly flat.
The fastening device comprises a fastening bracket 13, a bolt 14, and a metal claw 15.
The bolt 14 comprises a head 18, and a threaded shank having a top portion 21 and a lower portion 19, in between which is a portion of reduced diameter 20.
The fastening bracket 13 is welded to the sink body at 16 e.g. by spot welds (not shown). The bracket 13 has a slot 17 which acconmodates the portion of reduced diameter 20 on the bolt 14. More details on the fitting of the bolt 14 into the slot 17 will be provided when Figures 3 to 5 are discussed.
Fastening is accomplished through the use of the metal claw 15 having teeth 22 at one end and a threaded hole 23 at the other. The threaded hole 23 is screw-threadably engaged with the lower portion 19 of the threaded shank.
The metal claw 15 is a broad, flat piece of metal that is bent a total of 90 between the hole 23 and the tecth 22.
~ ur~ 2 shows mor~ .ll~arly ~ho ~ boncl o:f tl)o mol:al claw 15 botwocn the threadcd hole 23 and thc tceth 22. Ihe motal claw L5 has two bends 24 alld 25 of about 45 each in order to achieve a total bcnd of 90.
~s thc bo1t 14 (w:;th its portion of reduced diameter 20 in the slot 17 of the fastening brackot 13) is turned in a predetermined direction, e g. clock-wise~ the claw 15 travels upwards to make contact with the underside of a ~LZ~6~3~5 counter top 1I to ensure firm engagement of the sink rim 12 with the counter top 11. The head 18 of the bolt is preferably designed to accommodate either a socket driver, a flat screwdriver, or a Robertson screwdriver.
Reference should now be made to Figures 3, 4, and 5 for a more detailed discussion of how the bolt 14 fits into the bracket 13. The fastening bracket 13 comprises a back portion 31 and a hollow rectangular portion 30 that is as wide as the back portion 31, said hollow rectangular portion 30 extending outwardly from the bottom part of the back portion 31. The hollow rectangular portion 30 comprises an upper surface 32, a lower surface 33, and a front surface 34.
The slot 17 which accommodates the portion of reduced diameter 20 of the bolt 14 comprises an enlarged portion 35 on the centre of the upper surface 32 which is slightly wider than the diameter of the bolt 14 and slightly longer than the length of the top portion 21 of the bolt 14, a vertical portion 36 on the centre of the frollt surface 34 which extends along the entire height of the front surface 34 and is slightly wider than the portion of reduced diameter 20 on the bolt 14, and a portion 37 on the centre of the lower surface 33 which extends inwardly from the front surface to a depth that will enable the bolt to rest in a vertical position and is slightly wider than the portion of reduced diameter 20 on the bolt 14.
The slot 17 in the rect~mgular portion ~0 allows t.h~ port:ion ol reduced diamoter 20 to ontQr ~,and l-o renlove~l~ only frolll tllO tOI~ ~Ind Ollly Whell the bolt l~ :i.s hor.izolltll:l, as SIlOWII in l~iguros 3 ~md 4. Wllon tllO bo:lt :i.s swung from a horizontal position as in ~igure 4 to a vertica~ oslt:ion as in l~;.gure 5, it is restrictcd against vertical movement by cngagement with the sides of tho port.i.on 37 of slot 17. I-lowever, tho bolt is still frec to turn around :its centre line.

63~

As the bolt 1~ is turned in a pre-determined direction, e.g. clock-wise, the metal claw 15 travels vertically upwards until the teeth 22 make contact with the counter top 11 and further turning draws the sink rim 12 down into firm engagement with counter 11. Thus, a tight fit between the sink and counter top is attained and because the bolt 14 remains in a vertical position, the welds joining the fastening bracket 13 to the sink 10 are subject to a shear force only, and will therefore have less tendency to break than if subjected to tension forces.
The fastening bracket 13 can be formed by stamping or cutting the slot 17 in a flat piece of metal and then bending the metal to the shape shown in the drawings. If required to provide strength, the flat portion 50 (Figure 5) may be welded to the back portion 51.

Claims (8)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A sink fastening device comprising a bolt having a head and a threaded shank of first diameter, said shank having a first and second portion in between which is a portion of second diameter less than said first diameter; a fastening bracket adapted to be secured to a sink body and having a slot which accommo-dates the portion of reduced diameter on said bolt; and a clamp means comprising a metal claw screw-threadably engaged with said bolt, whereby when said bolt is rotated in a pre-determined direction said metal claw moves vertically along said bolt until said claw makes contact with the underside of a counter top whereby a rim of said sink may be pulled into firm engagement with a counter top.
2. A sink fastening device as claimed in claim 1 wherein said fastening bracket comprises a back portion and a hollow rectangular portion which extends outwardly from the bottom part of the back portion of the bracket, wherein said rectangular portion has an upper, a front and a lower surface.
3. A sink fastening device as claimed in claim 2, wherein said slot comprises a rectangular portion in said upper surface which is slightly wider than the diameter of said bolt, and slightly longer than the length of said first portion of said bolt; a vertical portion in said front surface which extends along the entire height of the front surface and is slightly wider than the portion of reduced diameter on said bolt; and a portion in said lower surface which extends inwardly from the front surface to in depth that enables said bolt to be held in a vertical position, and is slightly wider than the portion of reduced diameter on said bolt.
4. A sink fastening device as claimed in claim 3 wherein said fastening bracket is adapted to be secured to a sink body by welds.
5. A sink fastening device as claimed in claim 3 wherein the head of said bolt is designed to accommodate a socket driver or a screwdriver.
6. A sink fastening device as claimed in claim 3 wherein said metal claw has teeth at its upper end, which make contact with the lower side of a counter top.
7. A sink fastening device as claimed in claim 6 wherein said metal claw has a total bend of 90° between a threaded hole at one end, with which it engages the bolt, and said teeth at the other end.
8. A sink fastening device as claimed in claim 6 wherein said metal claw has two bends of approximately 45° each located between a threaded hole at one end, with which it engages the bolt, and said teeth of the other end.
CA000443769A 1983-12-20 1983-12-20 Sink fastening assembly Expired CA1246805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000443769A CA1246805A (en) 1983-12-20 1983-12-20 Sink fastening assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000443769A CA1246805A (en) 1983-12-20 1983-12-20 Sink fastening assembly

Publications (1)

Publication Number Publication Date
CA1246805A true CA1246805A (en) 1988-12-20

Family

ID=4126789

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000443769A Expired CA1246805A (en) 1983-12-20 1983-12-20 Sink fastening assembly

Country Status (1)

Country Link
CA (1) CA1246805A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000052270A2 (en) 1999-03-04 2000-09-08 Elkay Manufacturing Company Mounting device for securing a sink to a countertop and method of using same
WO2007090540A1 (en) * 2006-02-11 2007-08-16 Blanco Gmbh + Co Kg Mounting device for mounting fitted equipment to a worktop
WO2007090539A1 (en) 2006-02-11 2007-08-16 Blanco Gmbh + Co Kg Mounting device for mounting a sink on a worktop

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000052270A2 (en) 1999-03-04 2000-09-08 Elkay Manufacturing Company Mounting device for securing a sink to a countertop and method of using same
US6216992B1 (en) 1999-03-04 2001-04-17 Elkay Manufacturing Company Mounting device for securing a sink to a countertop and method of using same
WO2007090540A1 (en) * 2006-02-11 2007-08-16 Blanco Gmbh + Co Kg Mounting device for mounting fitted equipment to a worktop
WO2007090539A1 (en) 2006-02-11 2007-08-16 Blanco Gmbh + Co Kg Mounting device for mounting a sink on a worktop

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