EP0667437A1 - Centre key - Google Patents
Centre key Download PDFInfo
- Publication number
- EP0667437A1 EP0667437A1 EP95300821A EP95300821A EP0667437A1 EP 0667437 A1 EP0667437 A1 EP 0667437A1 EP 95300821 A EP95300821 A EP 95300821A EP 95300821 A EP95300821 A EP 95300821A EP 0667437 A1 EP0667437 A1 EP 0667437A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile
- body portion
- cap
- caps
- centre
- 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.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
- E06B3/663—Elements for spacing panes
- E06B3/667—Connectors therefor
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Lock And Its Accessories (AREA)
- Supports Or Holders For Household Use (AREA)
- Connection Of Plates (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Wing Frames And Configurations (AREA)
Abstract
Description
- This invention relates to a key for joining hollow profiles in the formation of a decorative grille which can be inserted in a glazing panel to simulate traditional Georgian windows. Such keys are widely known in the double glazing industry as "centre keys".
- Known centre keys includes a body portion and a number of tongues which project from the body portion for insertion into the open ends of respective lengths of profile. The body portion usually remains visible in the finished glazing unit and is designed to provide a matching, aesthetically attractive square edged interface between the cut ends of the profiles. Injection mouldings are widely used to form a one piece component incorporating both the attachment tongues and the centre section. The polymer used is a light-fast, UV stable grade of pigmented engineering plastics, but the mass of the centre section can cause so-called weld lines to appear, and can produce shrinkage at the edges which causes the moulded centre to gape apart from the raw cut edges of the profiles.
- Another known form of key has metal covers for the body portion, which are held in place by integral tongues which project into the ends of the profiles. This system enables the covers to be paint finished, matching exactly the finish of the profiles. However, this arrangement still has several disadvantages, which include the following:
- The cut ends of the profiles remain exposed detracting from the visual appearance of the finished grille.
- The range of cap configurations which can be produced is very limited due to metal forming techniques.
- The metal caps can chatter against the glass due to vibrations caused by traffic or aircraft for example.
- An aim of the present invention may be viewed as being to overcome the limitations of both integrally moulded centre keys and composite keys with metal covers.
- The present invention proposes a centre key of the kind set forth in the appended Claims.
-
- The following description and the accompanying drawings referred to therein are included by way of non-limiting example in order to illustrate how the invention may be put into practice. In the drawings:
- Figure 1 is a plan view of the main part of a centre key of the invention together with a cap which is shown separately,
- Figure 2 is an end view of one of the tongues shown in Fig. 1 with two caps in place, and
- Figure 3 is longitudinal section taken through the tongue of Fig. 2 in position III-III of Fig. 1.
- Referring firstly to Fig. 1, the
main part 1 of the centre key is an integral plastics moulding which includes a substantiallysquare body part 10 having four tongues 12-15 of known form projecting from its four sides to receive fourprofile sections 16, shown in outline only. The tongues each have a pair of upstanding longitudinally extendingribs 17 which are continued across thebody part 10 to be continuous with theribs 17 of the opposite tongue. At the root of each tongue the ribs are bridged by atransverse bar 19. - The opposite rear face of the
main part 1 is of substantially the same configuration, and a pair of substantiallyidentical caps 3 are provided to completely cover and enclose the opposite faces of the body part 10 (only one being seen in Fig. 1). Thefront wall 32 of the caps is substantially square and may be of any desired style (e.g. "square cut" or "pyramid") to provide an aesthetically attractive interface between theprofiles 16. As can be seen in Fig. 2, anabutment wall 33 depends from each of the four straight edges of thefront wall 32, being slightly inset from the extreme marginal edge of the front wall which thus forms aprojecting lip 38. The fourabutment walls 33 are each provided withdouble notches 34 to receive theribs 17 when the cap is superimposed on thebody portion 10, in which position theabutment walls 33 are positively located between the fourtransverse bars 19. - The two
caps 3 may be secured to thebody portion 10 by means of a suitable adhesive, by a suitable plastics welding technique, or by means of co-operating snap-engageable formations on the cap and body portion. - When a length of
profile 16 is pushed over one of thetongues 12 as shown in Fig. 3, the leading cut end eventually abuts thewall 33 which provides a positive stop for the profile. The position of the cut end is therefore determined relative to the cap rather than the body portion, ensuring that the end is covered irrespective of the relative positions of the cap and body portion. Theprojecting lip 38 closely overlies the cut end of the profile, hiding the cut end from view. Although the lip is only short, its length is still sufficient to cover the end face of the profile in the event of normal shrinkage in the length of the profile. - The caps and body portion can be formed with an aperture for insertion of a resilient glass buffer, to prevent chattering against the glass sheets in a double glazing panel.
- The advantages of the present centre key may be summarised as follows:
- 1. The cut ends of the profiles are not visible.
- 2. Only one main part need be moulded for a given size of profile.
- 3. The main part can be moulded in inexpensive materials without regard to colour, in order to reduce component costs.
- 4. The moulding tools for the caps can easily be provided with interchangeable inserts for manufacture of various cover shapes.
- 5. The caps can be moulded from different coloured materials for use with a range of profile colours at minimum cost.
- 6. The caps can be cycled quicker, reducing moulding costs.
- 7. Shrinkage problems related to moulding of heavy sections are eliminated.
Claims (6)
- A centre key comprising a unitary main part (1) which includes a body portion (10) and a plurality of tongues (12-15) which project from the body portion for insertion into the open ends of respective lengths of profile (16), and a cap (3) to cover the body portion in use, the key including abutment means (33) to, provide a stop for abutment with cut ends of the lengths of profile,
characterised in that the cap is moulded of plastics and has a lip or flange portion (38) which, in use, overlies the cut end of a length of profile when in contact with the abutment means. - A centre key according to Claim 1, in which the abutment means (33) is formed on the cap.
- A centre key according to Claim 1 or 2, in which the cap is secured to main part by snap engagement.
- A centre key according to Claim 1 or 2, in which the cap is secured to main part by an adhesive.
- A centre key according to Claim 1 or 2, in which the cap is secured to main part by welding.
- A centre key according to any preceding claim, in which two such caps are provided, for mounting on opposite sides of the body portion.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9402649 | 1994-02-11 | ||
GB9402649A GB2286419B (en) | 1994-02-11 | 1994-02-11 | Centre key |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0667437A1 true EP0667437A1 (en) | 1995-08-16 |
EP0667437B1 EP0667437B1 (en) | 1998-04-29 |
Family
ID=10750238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19950300821 Expired - Lifetime EP0667437B1 (en) | 1994-02-11 | 1995-02-09 | Centre key |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0667437B1 (en) |
CA (1) | CA2142234C (en) |
DE (1) | DE69502215D1 (en) |
ES (1) | ES2116679T3 (en) |
GB (1) | GB2286419B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19714557C1 (en) * | 1997-04-09 | 1999-02-11 | Werner Dipl Ing Schmitz | Cross-stay with four arms |
WO2001071146A1 (en) * | 2000-03-21 | 2001-09-27 | Erbslöh Rolltech A/S | Longitudinal connector for hollow profiles |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022105435A1 (en) | 2022-03-08 | 2023-09-14 | S & T Components Gmbh & Co. Kg | Cross connector |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3221117A1 (en) * | 1981-07-03 | 1983-04-07 | Fa. Franz Knack, 4400 Münster | Insulating-glass element with ornamental glass element inserted between two panes and with distance pieces |
FR2550577A1 (en) * | 1983-06-22 | 1985-02-15 | Freudenberg Carl | Set of elements for assembling at least two window panes with a seal and a certain mutual separation |
GB2147045A (en) * | 1981-08-12 | 1985-05-01 | Hepworth Plastics Ltd | Windows |
US4783938A (en) * | 1988-02-05 | 1988-11-15 | Sne Enterprises | Window panel assembly |
AT394617B (en) * | 1990-07-23 | 1992-05-25 | Proglas Handelsgmbh & Co Kg | Window glazing-bar system comprising hollow profiles and connections thereof |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1564447A (en) * | 1977-03-09 | 1980-04-10 | Bkl Extrusions Ltd | Glazing strips |
US4610901A (en) * | 1984-10-25 | 1986-09-09 | Wayne Boren Corporation | Dual glazed insulatable stained glass window and method of making same |
AU5658786A (en) * | 1985-04-26 | 1986-11-06 | Mansion Industries Inc. | Grid for windows |
GB2242699A (en) * | 1990-04-03 | 1991-10-09 | Ellay Enfield Tubes Limited | Decorative grid inserts for double-glazing |
-
1994
- 1994-02-11 GB GB9402649A patent/GB2286419B/en not_active Expired - Lifetime
-
1995
- 1995-02-09 DE DE69502215T patent/DE69502215D1/en not_active Expired - Lifetime
- 1995-02-09 EP EP19950300821 patent/EP0667437B1/en not_active Expired - Lifetime
- 1995-02-09 ES ES95300821T patent/ES2116679T3/en not_active Expired - Lifetime
- 1995-02-10 CA CA 2142234 patent/CA2142234C/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3221117A1 (en) * | 1981-07-03 | 1983-04-07 | Fa. Franz Knack, 4400 Münster | Insulating-glass element with ornamental glass element inserted between two panes and with distance pieces |
GB2147045A (en) * | 1981-08-12 | 1985-05-01 | Hepworth Plastics Ltd | Windows |
FR2550577A1 (en) * | 1983-06-22 | 1985-02-15 | Freudenberg Carl | Set of elements for assembling at least two window panes with a seal and a certain mutual separation |
US4783938A (en) * | 1988-02-05 | 1988-11-15 | Sne Enterprises | Window panel assembly |
US4783938B1 (en) * | 1988-02-05 | 1993-06-25 | Sne Enterprises Inc | |
AT394617B (en) * | 1990-07-23 | 1992-05-25 | Proglas Handelsgmbh & Co Kg | Window glazing-bar system comprising hollow profiles and connections thereof |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19714557C1 (en) * | 1997-04-09 | 1999-02-11 | Werner Dipl Ing Schmitz | Cross-stay with four arms |
WO2001071146A1 (en) * | 2000-03-21 | 2001-09-27 | Erbslöh Rolltech A/S | Longitudinal connector for hollow profiles |
Also Published As
Publication number | Publication date |
---|---|
GB2286419A (en) | 1995-08-16 |
EP0667437B1 (en) | 1998-04-29 |
GB2286419B (en) | 1997-02-12 |
GB9402649D0 (en) | 1994-04-06 |
DE69502215D1 (en) | 1998-06-04 |
CA2142234C (en) | 2005-08-30 |
ES2116679T3 (en) | 1998-07-16 |
CA2142234A1 (en) | 1995-08-13 |
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