US 3300913 A
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Description (OCR text may contain errors)
L 1967 F. J. PATRY ETAL EXPANSION JOINT COVER AND FLASHING THEREFOR Filed March 2, 1964 ATTORNEYS H. Bloir Lamont United States Patent 3,300,913 EXPANSION JOINT COVER AND FLASHENG TIEREFOR Francis J. Patry, Lewiston, and Harold Blair Lamont, Lincolnville, Maine, assignors to Lamont & Riley, Inc., Worcester, Mass, a corporation of Massachusetts Filed Mar. 2, 1964, Ser. No. 348,491 8 Claims. (CI. 5258) This invention relates to expansion joint covers of the type often used in buildings and other structures Where it is desirable to cover an expansion joint. This invention is an improvement on the expansion joint cover of the prior copending application of Harvey L. Patry, Ernest Patry, Francis J. Patry and H. Blair Lamont, Serial Number 72,179 filed November 28, 1960, now United States Patent 3,123,188, granted March 3, 1964, now Reissue Patent No. 25,733, granted February 23, 1965. A machine for and method of manufacturing the aforesaid earlier form of expansion joint cover is shown and described in connection with the copending application of Harvey L. Patry, Ernest Patry, Francis J. Patry and H. Blair Lamont, Serial Number 342,766, filed February 5, 1964.
A major object of the present invention is to provide an improved expansion joint cover of the type disclosed in the aforesaid prior application, now Reissue Patent No. 25,733.
Another object of this invention is to provide an expansion joint cover which can be installed more easily than those of the prior art.
A further object of this invention is to provide an expansion joint cover which is simple to install and reliable in operation.
Another object of this invention is to provide an expansion joint cover which, considering the costs of installation, is lower in cost than heretofore.
A further object of the invention is to improve the durability of expansion joint covers.
A still further object of the invention is to provide an expansion joint cover which has improved thermal insulation and soundproof characteristics.
Other objects and advantages of the invention will appear as this description proceeds.
In carrying out the aforesaid objects, I provide an elastic strip with metal extensions extending away from each elongated edge of the elastic strip whereby to effectively widen the expansion joint cover. These metal extensions are folded back on themselves to provide U- shaped clips adjacent their opposite edges. These U- shaped clips extend the full length of the expansion joint cover and include restricted entranceways so as to securely hold a piece of flashing which enters the same. The elastic strip preferably has a piece of closed cell foam or insulating foam adhesively secured to the underside thereof and which covers substantially the entire area of one face of the elastic strip, except for limited portions adjacent opposite edges which are covered by the aforesaid metal extensions. If desired the insulating foam may also cover the metal extensions or part thereof.
The metal extensions are attached to the elastic strip by means of a socket into which the elastic strip fits, the socket being a part of the metal extension.
The socket is described in considerable detail and made the subject of the aforesaid prior copending application, now Reissue Patent No. 25,733.
Other features of my invention will appear as this description proceeds and the combinations of elements constituting my invention will be defined in the appended claims.
In the drawings:
FIGURE 1 is a plan view of the expansion joint cover with one end shown in cross-section.
FIGURE 2 is a cross-sectional view of the invention as installed on a building or structure.
FIGURE 3 is a more detailed view of a portion of the expansion joint cover constituting the invention along with a piece of flashing of a building.
FIGURE 4 is a detailed cross-sectional view of a modified form of the invention as installed.
FIGURE 5 is an end view of the piece of flashing used in FIGURE 4.
FIGURE 6 is an end view of the metal extension 16-18 etc. of FIGURE 4.
The expansion joint cover of FIGURES 1, 2 and 3 includes an elastic strip 11) which is preferably 20 feet long, although it may be of any suitable length. It is supported by two metal extensions 12 and 13, each of which has portions 14 and 15 which are clamped on to limited side portions of the elastic strip 119, respectively adjacent opposite edges thereof. The portion 15 of member 13 lies parallel to the strip 16 which has a bend 16a so that thereafter it is more nearly in the same plane, which is the major plane of the joint cover, as the portion 15. At a suitable distance from bend 16a, the direction of the member 13 again changes at 17, and terminates in a U- shaped clip 1849, which clip includes a folded-over portion 20 to provide a restricted entrance for the U-shaped clip 1819.
The elastic strip 10 of FIGURES 1, 2 and 3 is attached to the inner faces of the socket 14-15 by means of a suitable adhesive, as Well as to a minor extent by the clamping action of the members 1445. The socket portion 14 is corrugated along its full length to enable the device to be easily installed in the field. One such corrugation is shown at 14a of the FIGURE 3. Except for the portions of strip 10 which are covered by the two socket elements 14 and 15, the lower face of the strip 10 is covered by a piece of insulating foam 11 which is preferably quite thick as compared to the thickness of the elastic strips 10. The elastic strip 10 is made of a suitable strong elastic material as, for example, neoprene, or any other of the materials described in either of the aforesaid applications referred to above. Thus, strip 11) is adapted to stand most of the stresses and strains, while the insulating foam strip 11 is adapted to provide additional thermal insulation and to make the expansion joint cover more soundproof, etc.
One of the important features of the invention shown in FIGURES 1, 2 and 3, resides in the use of clips 18-19 adjacent to each edge of the expansion joint cover. These clips enable the expansion joint cover to be readily attached to pieces of flashing such as 21. The piece of flashing shown includes the vertical portion 21 adapted to be attached to an expansion joint BB of a building. It is understood that the two portions BB of FIG- URE 2 are adjacent portions of a building which are not attached together and which may move with respect to each other to permit expansion and contraction of the elements of the building. Thus the two walls BB may move in any direction with respect to each other as the temperature van'es. The two pieces of flashing 21 are attached to these two elements BB respectively, and each piece of flashing 21 has a generally horizontal portion 22 which contains a series of raised portions 23 formed by indenting the top face of strip 22 at spaced intervals as, for example, every inch or two. When the strip 22 with its raised portions 23 enters the restricted entrance to the U-shaped clips 18-19, the raised portion 23 causes the members 18 and 19 to separate, and when the strip 22 has .passed so far inward that the raised portion passes enlargement 20, the spring action of clip 18-19 causes the strips 18 and 19 to approach each other. Thus, the enlargement 20 moves against strip 22 to the right of raised portion 23 (see FIGURE 3) and locks the clip onto the flashing 21-23. Normally the flashing members 2121 are installed on the building first, and the expansion joint cover is very simply and easily installed by inserting the two clips 18-19 onto the two flashing members 21-23.
FIGURE 4 is a modified form of the invention which is identical in every respect to FIGURES 1, 2 and 3 except as follows. The insulating foam 11 instead of terminating at the edge of the socket 1415 as in FIG- URE 3, extends to the edge of the clip 1819 and thus covers the top surface of the members B. The clips 18-19 of FIGURE 4 are vertical instead of horizontal as in FIGURES 1 to 3, and the flashing 21 may therefore be mounted in a diiierent way, as shown.
It is understood that, while FIGURE 4 shows only the right-hand member B, there are two members B, the same as in FIGURES 1 to 3; and the left-hand member B and the left-hand part of the expansion joint cover is built the same way as the right-hand part.
FIGURE 5 illustrates the piece of flashing 42; and
FIGURE 6 the socket elements 14-45 and clips 18-19 for the left-hand part of FIGURE 4. The flashing 42 is secured to the top of wooden member B by nails 44 and extends downward to form drip line 43 upward to form the clip-receiving portion 41.
I claim to have invented:
1. An expansion joint cover for a building structure comprising a strip of elastic material, a metal strip attached thereto and extending away from one side of the elastic strip, and a piece of flashing, said flashing having a projecting portion including a raised portion, said metal strip including socket means for attaching the elastic strip to said flashing, said socket means comprising a U-shaped c-lip receiving said projecting portion of the flashing for attachment thereto, said U-shaped clip having means for providing a restricted entrance into the clip and for holding the projecting portion of the flashing in the clip by mechanically co-operating with said raised portion, the retaining means comprising an enlargement on one leg of said U-shaped clip.
2. An expansion joint cover as defined in claim 1 wherein one of the legs of said U-shaped clip is generally in line with the major plane of the joint cover.
3. An expansion'joint cover as defined in claim 1 wherein said elastic strip includes a strip of insulating foam covering one face of the elastic strip, said strip of insulating foam being substantially thicker than said strip of plastic material.
4. An expansion joint cover as defined in claim 1 wherein the legs of said -U-shaped clip are generally transverse to the major plane of the joint cover.
5. An expansion joint cover as defined in claim 4 wherein said joint cover further comprises a strip of insulating foam covering one face of said elastic strip together with one face of said metal strip.
6. An expansion joint cover as defined in claim 1 wherein said metal strip is folded back on itself at at least two places to integrally form said socket means, the first folded back portion being resilient and forming said U-shaped clip and the second folded back portion providing the restricting and holding means.
7. An expansion joint cover as defined in claim 6 wherein said metal strip is folded back on itself at at least three places to integrally form said socket means and wherein said metal strip further includes an approximately bend, the third folded back portion and the 90 bend causing the extended sides of said U-shaped clip to be generally perpendicular to the major plane of the joint cover.
8. An expansion joint cover as defined in claim 1 wherein the strip of elastic material has sufficient re-' siliency to enable said clip to be readily inserted on the projecting portion of the flashing.
References Cited by the Examiner UNITED STATES PATENTSv Re. 25,733 2/1965 Patry et al 52--396 502,009 7/ 1 893 Neel 5296 1,357,713 11/1920 Lane 52468 X 1,589,675 6/1926 Belding 52-522 2,126,499 8/ 1938 Petersen 5252t2 X 2,140,407 12/ 1938 Schilling t 52-60 X 2,226,886 12/1940 Willis 52-673 X 2,231,065 2/1941 Gabel 5296 X 2,260,438 10/1941 Cheney 52-60 2,741,000 4/ 1956 De Martin 52-208 3,093,934 6/1963 'Underhill 52469 X FOREIGN PATENTS 43,132 7/ 1888 Germany. 567,364 10/ 1957 Italy.
FRANK L. ABBOTT, Primary Examiner.
M. O. WARNECKE, Assistant Examiner.