CA1059336A - Insulated block - Google Patents
Insulated blockInfo
- Publication number
- CA1059336A CA1059336A CA273,165A CA273165A CA1059336A CA 1059336 A CA1059336 A CA 1059336A CA 273165 A CA273165 A CA 273165A CA 1059336 A CA1059336 A CA 1059336A
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- CA
- Canada
- Prior art keywords
- insert
- web
- block
- slots
- adjacent
- 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.)
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Abstract
ABSTRACT
A preformed masonry building block having a U-shaped preformed insulating insert of molded expandible polystyrene disposed in each cavity thereof. Each web of the building block is provided with a vertical insulating slot which is at least three fourths (3/4) of an inch wide and which has a volume equal to at least one half (1/2) a volume found by multiplying slot width by web height and thickness. Each end web has a slot ad-jacent the end of each leg of the adjacent insert and the legs project into and fill the slots. The intermediate web has a slot on each side thereof adjacent the body portions of the in-serts and a projection on the body portion of each insert enters and fills its adjacent slot.
A preformed masonry building block having a U-shaped preformed insulating insert of molded expandible polystyrene disposed in each cavity thereof. Each web of the building block is provided with a vertical insulating slot which is at least three fourths (3/4) of an inch wide and which has a volume equal to at least one half (1/2) a volume found by multiplying slot width by web height and thickness. Each end web has a slot ad-jacent the end of each leg of the adjacent insert and the legs project into and fill the slots. The intermediate web has a slot on each side thereof adjacent the body portions of the in-serts and a projection on the body portion of each insert enters and fills its adjacent slot.
Description
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The insulation of masonry building blocks has taken a variety o~ ~ormsO After a wall has been constructed or partial-ly constructed o~ such blocks, insulation has been introduced in situ. Insulation has also been molded dir,ectly in $he cavities of such blocks. Further, various splecial types o~
blocks have been provided with insulation mounted internally or secured externally. One ~orm of block insulation, rapidly gain-ing in popularity, is disclosed in U. S. Patent No. 3,885,363 to Richard W. Whittey entitled INSU~ATED BLOCK. As disclosed therein, pre~ormed insula-ting inserts are introduced to the cavities o~ building blocks at the block plant a~ter the blocks have been ~ormed and the blocks may therea~ter be handled dur-~ng c~ns~ruct~on ln the ordinary manner o~ uninsulated blocksO
Obvious advantages in ei~iciency and convenience are thus achleved~
In the last mentioned insulating technique, however, as in substantially all oi the methods employed, the building blocks have two or more transverse webs between inner and outer side sections and substantial heat transier occurs conductively therethroughO To date, there has been no e~ec-tive solution to th~s problem~
It is the general object o~ the present invention to provide an insulated masonry building block oi the type which has one or more cavities containing a pre~ormed insulating in-sert and which also includes transverse webs modi~ied in such manner as substantially to reduce heat trans~er thereacross.
IN THE DRAWINGS:
Fig. 1 is a perspective view oi an improved insulated building block ~orming a ~irst embodiment o~ the present inven-tionO
~ .
v,,~''~g`~ "1 1~59336 ~, Fig. 2 is a horizontal section taken generally asindicated at 2-2 in Fig. 1 and showing the internal con~igura-tion o~ the block and its insulating inserts~
Fig. 3 is a vertical section -taken generally as indi-cated at 3-3 and showing a portion o~ the block and an insert~ `
Directional and/or geometrical terms such as "top", -"bottom", 'tside", '~transverse", "horizontal", "vertical", etc~
axe used ~reely hereinbelow but it is to be understood that such terminology is employed ~or convenience of description only and is not to be regarded as in any way l~miting the invenr tion in the speci~ication or the claims which ~oltow.
~ e~erring particularly to Figs. 1 thxough 3, it will be ob~erved that an insulated building block indicated general-ly at 10 ~s o~ a conventional ltype. While the present inven-tion contemplates conventional masonry building blocks~ it is to be ~urther understood that the invention is not l~mited to block~ o~ any particular con-~iguration or material.
The building block 10 illustrated in Figs. 1-3 is generally rectangular in ~orm and includes ~irst and second ldentical cavities or vertical through openings 12, 14. That i~, the openings or cavities 12, 14 extend throughout the verti-cal dimension o~ the block and are bounded transversely by webs 16, lB and 20. The transverse webs 16 and 20 are located approximately at end portions o~ the block and the web 18 is lo-cated approximately centrally or intermediate the length thereo~. Opposite parallel side sections 22, 24 o~ the block extend longitudinally in transversely spaced relationship and are con~entionally ~ormed integrally with the webs 16, 18 and 20, The building block 10 is pre~ormed in a conventional manner and it will be apparent that the block can be readily
~s~3~ ` ~
The insulation of masonry building blocks has taken a variety o~ ~ormsO After a wall has been constructed or partial-ly constructed o~ such blocks, insulation has been introduced in situ. Insulation has also been molded dir,ectly in $he cavities of such blocks. Further, various splecial types o~
blocks have been provided with insulation mounted internally or secured externally. One ~orm of block insulation, rapidly gain-ing in popularity, is disclosed in U. S. Patent No. 3,885,363 to Richard W. Whittey entitled INSU~ATED BLOCK. As disclosed therein, pre~ormed insula-ting inserts are introduced to the cavities o~ building blocks at the block plant a~ter the blocks have been ~ormed and the blocks may therea~ter be handled dur-~ng c~ns~ruct~on ln the ordinary manner o~ uninsulated blocksO
Obvious advantages in ei~iciency and convenience are thus achleved~
In the last mentioned insulating technique, however, as in substantially all oi the methods employed, the building blocks have two or more transverse webs between inner and outer side sections and substantial heat transier occurs conductively therethroughO To date, there has been no e~ec-tive solution to th~s problem~
It is the general object o~ the present invention to provide an insulated masonry building block oi the type which has one or more cavities containing a pre~ormed insulating in-sert and which also includes transverse webs modi~ied in such manner as substantially to reduce heat trans~er thereacross.
IN THE DRAWINGS:
Fig. 1 is a perspective view oi an improved insulated building block ~orming a ~irst embodiment o~ the present inven-tionO
~ .
v,,~''~g`~ "1 1~59336 ~, Fig. 2 is a horizontal section taken generally asindicated at 2-2 in Fig. 1 and showing the internal con~igura-tion o~ the block and its insulating inserts~
Fig. 3 is a vertical section -taken generally as indi-cated at 3-3 and showing a portion o~ the block and an insert~ `
Directional and/or geometrical terms such as "top", -"bottom", 'tside", '~transverse", "horizontal", "vertical", etc~
axe used ~reely hereinbelow but it is to be understood that such terminology is employed ~or convenience of description only and is not to be regarded as in any way l~miting the invenr tion in the speci~ication or the claims which ~oltow.
~ e~erring particularly to Figs. 1 thxough 3, it will be ob~erved that an insulated building block indicated general-ly at 10 ~s o~ a conventional ltype. While the present inven-tion contemplates conventional masonry building blocks~ it is to be ~urther understood that the invention is not l~mited to block~ o~ any particular con-~iguration or material.
The building block 10 illustrated in Figs. 1-3 is generally rectangular in ~orm and includes ~irst and second ldentical cavities or vertical through openings 12, 14. That i~, the openings or cavities 12, 14 extend throughout the verti-cal dimension o~ the block and are bounded transversely by webs 16, lB and 20. The transverse webs 16 and 20 are located approximately at end portions o~ the block and the web 18 is lo-cated approximately centrally or intermediate the length thereo~. Opposite parallel side sections 22, 24 o~ the block extend longitudinally in transversely spaced relationship and are con~entionally ~ormed integrally with the webs 16, 18 and 20, The building block 10 is pre~ormed in a conventional manner and it will be apparent that the block can be readily
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li-fted and manipulated by a mason or other workman grasping one of the webs thereof ~rom above9 -finger access from above thus being essentialO Similarly, ~inger access to the webs ~rom be-low should be provided for when the blocks are handled in an attitude inverted from that shown, the latter attitude being conventional during construction while the ~ormer prevails dur-ing block manufacture.
The cavities 12 and 14 taper gradually inwardly and downwardly as shown and during block manufacture the cores em-ployed in molding the blocks may of course vary somewhat in dimension, particularly as abrasive wear occurs on the ou-ter sur~aces thereof over long periods oi use. Thus, the cross sectional con-~igurations and/or dimensions o~ cavities such as 12, 14 are subject to variat~on over a substantial range~ Such variation may occur ~rom block to block and even from cavity to cavity within a single blockO
First and second or le~t and right hand insulating in- ~
serts 26, 26 in Figs. 1-3 are ~ormed o~ a light weight iorami- : -nous heat insulating and fire retardant material. Thus, a fire stop iunction and a substantial degree o~ resistance to sound .0 a~d mo~stuxe transmission are also provided~ molded expanded polystyrene presently comprising a pre~erred material. The in-serts are preiormed in a con~iguration such as to enter and sub-stantially ~it the cavities in the building blocks and a sub-stantial cross sectional compressibility is provided ~or whereby ~
a condition o~ slight compression exists when an insert is en- ~ -tered and secured ln its cavity. Thus, the external sur~ace of the insert is in ~irm engagement with the cavity walls irrespective o~ the dimensional variations as aforesaid and the inserts are ~rictionally retained within the cavitles against accidental or unintended displacement during transport, etcO
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A second important consideration in insert configura-tion resides in the provision of an insert whercin at least a part of one end portion adjacent a web is substan-tially removed or otherwise modified to provide for finger access to the web, lifting and manipulation of the building block thus being ~acilita tedO "' As described more fully in the aforesaid U. S. ;;
Patent No. 3,885,363, at least one elongated vertical opening ~
is provided in each insert and extends from top to bottom ;
whereby to enhance the cross sectional compressibility of the insert. In each of theinserts 26, 26 illustrated, a relatively large and centrally located vertical through opening is provid-ed at 28. Further, the required finger access to the end webs 16, 20 ol' the block is provided for by removal of an outer or end wall of each insert 26 at an area 290 More particularly, and as illustrated in Figs o 1-3 ~ the entire outer or end wall o~ each insert 26 at 29 is dispensed with from top to bottom `
and a U-shaped insert cross section results, each insert thus having a body portion 30 and first and second similar legs 32, 34 integra~ with the body portion~ The "U" configuration :Eor the ins~rts is found to be particularly desirable in the p:rovi-sion o~ both top and bottom finger access to the end webs 16, 20 and in a relatively high level of cross sectional compressi-bility resulting from both the provision of the central through openings 28, 28 and the removal of outer end walls, inwardly flexible legs 32, 34 thus being provided.
Building blocks equipped with the specific U-shaped insulating inserts shown and described above or with other in-serts within -the scope of the invention exhibit substantial re-duction in thermal conductivity or heat transfer characteristics, .. . . . ~ , .
1~59336 commonly expressed in the industry as an improvement in "UFactor". It is known, however, that substantial heat transfer occurs through the transverse webs o~ the blocks~ such as indi-cated at 16, 18, 20. Accordingly, the present inventiGn contem-plates the modification o~ such webs to substantially improve the desired heat transfer characteristics, i.e. -to improve or to lower the"U Factor ~t such that there is less heat loss through the building blocks comprising the walls o~ a heated building or conversely, a lesser degree o~ heat transfer inwardly through the walls o~ an air conditioned building. The pre~erred manner in which web modification is accomplished involves the provision o~ slots in one or more o~ the transverse webs in a building block, th~ slots being ~illed with integral projections ~ormed on ad~acent insulating inserts.
The coniiguxationsand dimensions oi the slots provided ln the transverse webs may vary within the scope o~ the inven-tion, but must represent a judicious compromise between insulat-ing efficiency and maintenance of top to bottom compressive strength o~ the building blocks. It is presently pre~erred practice to provide a slot having a depth at least one fourth (1/4j the thickness o~ the web in which it is ~ormed and, more particularly, optimum slot depth is thought to be approximately one hal~ (1/2) the thickness of the web. Thus, where a web thickness of approximately one inch is provided, as is conven-tional in many building block designs or con~igurations, a slot depth o~ approximately one hal~ (1/2) inch is provided for.
Similarly, the volume o~ the web slot should be at least one fourth (l/4) of the volume iound by multiplying web thickness times web heig~ times the width at the mouth o~ the slot. With the slot depth o~ one hal~ (1/2) web thickness, the slot volume :L~)59336 is o~ course, one hal~ (1/2) this volumeO Slot width may also vaxy but should be at least thxee fourths (3/4) of an inch, a three ~ourths (3/4) inch insulated gap having thermal resistance characteristics equal to that of a much larger gap.
Reverting now to Figs. 1-3, and with particular refer-ence to Fig. 2, it will be obsexved that the transverse end web 16 is provided with a pair of similar vertical insulatin~ slots 36, 38~ Ths slots 36, 38 extend thxough approximately one half (1/2) the thickness of the web 16, ~rom top to bottom thereo~
and the width thereo~ may be regarded as approximately three fourths (3/4) of an inch. Further, the slots are respectively ad~acent and aligned with end poxtions of the legs 32, 34 o~
~hc ~t hand insulating in~ert Z6 and, ex~ensions or proJections on the legs extend into and substantially ~ill the slots. That is, 1~ the insert 26 is regarded as normally having legs extend-ing to the interior sur~ace or wall o~ the transverse web 16 the extreme end portions of the legs shown may be regarded as exten-sions ox projections entering and ~illing the slots 36, 38.
The intermediate transverse web 18 in Fig. 2 is also pro~ided with insulatlng slots and, pxe~erably, a pair of trans-versely spaced slots are arranged as illustxated at 40, 42. That is, a ~ixs~ slot 40 is provided adjacent a body portion 30 o~
the le~t hand insert and a second slot 42 adjacent the body por-tion 30 of the right hand insert 26. The slots 40, 42 are or may bs identical with the slots 36, 38 extending through one hal~ (l/2~ web thickness, ~rom top to bottom of the web, and ha~ing a width o-~ approximately three fourths (3/4) o~ an inch.
As will be obvious, the slots 40, 42 are o~set transversely an equal distance from a longitudinal center line through the building block and this provides for identity and convellient ~i:
~L~)S933~
molding of the inserts 26, 26 each with a projection 4~ thereon.
The projections 44, 44 on the inserts 26, 26 extend into and substantially fill the slots 40, 42 from the body portions 30, 30 of the inserts.
The right hand web 20 is provided with insulating -slots 46, 48 in a manner identical with the provision of the in-sulating slots 36, 38 in the left hand end web 16. FUrther, projections on the ends of the legs 32, 34 of the right hand in-sert 26 respectively enter and fill the slots as in the case of the left hand insert.
With the presently preferred block and insert configu-ration of Figs. 1~3, a substantial U-Factor improvement is achleved~ ancl no signi~icant loss in vertical compressive strength is encountered. The use o~ insulating inserts alone and without any form of web treatment is iound to achieve a U- t,' Factor improvement from approximately .3 to .2 or slightly below.
With the web and insert modifica-tion illustrated in Figs. 1-3 a further reduction from a U-Factor of approximately .2 to a U-Factor of appxoximately .13 to u15 is achieved, a substantial conservation o~ energy being thus realized.
From the foregoing, it will be appaxent that the building block and insert assembly achieves substantial improve-mant in thermal resistance or insulating characteristics, due consideration is nevertheless given to the ease and convenience with which blocks can be lifted and manipulated during transport and on site construction, and manufacture of both blocks and in-serts can be achieved at economic advantageu Still further, mo-dification or slo-t treatment of -the trallsverse webs of the building blocks is accomplished in such manner as not to effect significantly the top to bottom compressive s-trength thlereof.
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~)S9336 ~ ~
li-fted and manipulated by a mason or other workman grasping one of the webs thereof ~rom above9 -finger access from above thus being essentialO Similarly, ~inger access to the webs ~rom be-low should be provided for when the blocks are handled in an attitude inverted from that shown, the latter attitude being conventional during construction while the ~ormer prevails dur-ing block manufacture.
The cavities 12 and 14 taper gradually inwardly and downwardly as shown and during block manufacture the cores em-ployed in molding the blocks may of course vary somewhat in dimension, particularly as abrasive wear occurs on the ou-ter sur~aces thereof over long periods oi use. Thus, the cross sectional con-~igurations and/or dimensions o~ cavities such as 12, 14 are subject to variat~on over a substantial range~ Such variation may occur ~rom block to block and even from cavity to cavity within a single blockO
First and second or le~t and right hand insulating in- ~
serts 26, 26 in Figs. 1-3 are ~ormed o~ a light weight iorami- : -nous heat insulating and fire retardant material. Thus, a fire stop iunction and a substantial degree o~ resistance to sound .0 a~d mo~stuxe transmission are also provided~ molded expanded polystyrene presently comprising a pre~erred material. The in-serts are preiormed in a con~iguration such as to enter and sub-stantially ~it the cavities in the building blocks and a sub-stantial cross sectional compressibility is provided ~or whereby ~
a condition o~ slight compression exists when an insert is en- ~ -tered and secured ln its cavity. Thus, the external sur~ace of the insert is in ~irm engagement with the cavity walls irrespective o~ the dimensional variations as aforesaid and the inserts are ~rictionally retained within the cavitles against accidental or unintended displacement during transport, etcO
~L~S5133~
A second important consideration in insert configura-tion resides in the provision of an insert whercin at least a part of one end portion adjacent a web is substan-tially removed or otherwise modified to provide for finger access to the web, lifting and manipulation of the building block thus being ~acilita tedO "' As described more fully in the aforesaid U. S. ;;
Patent No. 3,885,363, at least one elongated vertical opening ~
is provided in each insert and extends from top to bottom ;
whereby to enhance the cross sectional compressibility of the insert. In each of theinserts 26, 26 illustrated, a relatively large and centrally located vertical through opening is provid-ed at 28. Further, the required finger access to the end webs 16, 20 ol' the block is provided for by removal of an outer or end wall of each insert 26 at an area 290 More particularly, and as illustrated in Figs o 1-3 ~ the entire outer or end wall o~ each insert 26 at 29 is dispensed with from top to bottom `
and a U-shaped insert cross section results, each insert thus having a body portion 30 and first and second similar legs 32, 34 integra~ with the body portion~ The "U" configuration :Eor the ins~rts is found to be particularly desirable in the p:rovi-sion o~ both top and bottom finger access to the end webs 16, 20 and in a relatively high level of cross sectional compressi-bility resulting from both the provision of the central through openings 28, 28 and the removal of outer end walls, inwardly flexible legs 32, 34 thus being provided.
Building blocks equipped with the specific U-shaped insulating inserts shown and described above or with other in-serts within -the scope of the invention exhibit substantial re-duction in thermal conductivity or heat transfer characteristics, .. . . . ~ , .
1~59336 commonly expressed in the industry as an improvement in "UFactor". It is known, however, that substantial heat transfer occurs through the transverse webs o~ the blocks~ such as indi-cated at 16, 18, 20. Accordingly, the present inventiGn contem-plates the modification o~ such webs to substantially improve the desired heat transfer characteristics, i.e. -to improve or to lower the"U Factor ~t such that there is less heat loss through the building blocks comprising the walls o~ a heated building or conversely, a lesser degree o~ heat transfer inwardly through the walls o~ an air conditioned building. The pre~erred manner in which web modification is accomplished involves the provision o~ slots in one or more o~ the transverse webs in a building block, th~ slots being ~illed with integral projections ~ormed on ad~acent insulating inserts.
The coniiguxationsand dimensions oi the slots provided ln the transverse webs may vary within the scope o~ the inven-tion, but must represent a judicious compromise between insulat-ing efficiency and maintenance of top to bottom compressive strength o~ the building blocks. It is presently pre~erred practice to provide a slot having a depth at least one fourth (1/4j the thickness o~ the web in which it is ~ormed and, more particularly, optimum slot depth is thought to be approximately one hal~ (1/2) the thickness of the web. Thus, where a web thickness of approximately one inch is provided, as is conven-tional in many building block designs or con~igurations, a slot depth o~ approximately one hal~ (1/2) inch is provided for.
Similarly, the volume o~ the web slot should be at least one fourth (l/4) of the volume iound by multiplying web thickness times web heig~ times the width at the mouth o~ the slot. With the slot depth o~ one hal~ (1/2) web thickness, the slot volume :L~)59336 is o~ course, one hal~ (1/2) this volumeO Slot width may also vaxy but should be at least thxee fourths (3/4) of an inch, a three ~ourths (3/4) inch insulated gap having thermal resistance characteristics equal to that of a much larger gap.
Reverting now to Figs. 1-3, and with particular refer-ence to Fig. 2, it will be obsexved that the transverse end web 16 is provided with a pair of similar vertical insulatin~ slots 36, 38~ Ths slots 36, 38 extend thxough approximately one half (1/2) the thickness of the web 16, ~rom top to bottom thereo~
and the width thereo~ may be regarded as approximately three fourths (3/4) of an inch. Further, the slots are respectively ad~acent and aligned with end poxtions of the legs 32, 34 o~
~hc ~t hand insulating in~ert Z6 and, ex~ensions or proJections on the legs extend into and substantially ~ill the slots. That is, 1~ the insert 26 is regarded as normally having legs extend-ing to the interior sur~ace or wall o~ the transverse web 16 the extreme end portions of the legs shown may be regarded as exten-sions ox projections entering and ~illing the slots 36, 38.
The intermediate transverse web 18 in Fig. 2 is also pro~ided with insulatlng slots and, pxe~erably, a pair of trans-versely spaced slots are arranged as illustxated at 40, 42. That is, a ~ixs~ slot 40 is provided adjacent a body portion 30 o~
the le~t hand insert and a second slot 42 adjacent the body por-tion 30 of the right hand insert 26. The slots 40, 42 are or may bs identical with the slots 36, 38 extending through one hal~ (l/2~ web thickness, ~rom top to bottom of the web, and ha~ing a width o-~ approximately three fourths (3/4) o~ an inch.
As will be obvious, the slots 40, 42 are o~set transversely an equal distance from a longitudinal center line through the building block and this provides for identity and convellient ~i:
~L~)S933~
molding of the inserts 26, 26 each with a projection 4~ thereon.
The projections 44, 44 on the inserts 26, 26 extend into and substantially fill the slots 40, 42 from the body portions 30, 30 of the inserts.
The right hand web 20 is provided with insulating -slots 46, 48 in a manner identical with the provision of the in-sulating slots 36, 38 in the left hand end web 16. FUrther, projections on the ends of the legs 32, 34 of the right hand in-sert 26 respectively enter and fill the slots as in the case of the left hand insert.
With the presently preferred block and insert configu-ration of Figs. 1~3, a substantial U-Factor improvement is achleved~ ancl no signi~icant loss in vertical compressive strength is encountered. The use o~ insulating inserts alone and without any form of web treatment is iound to achieve a U- t,' Factor improvement from approximately .3 to .2 or slightly below.
With the web and insert modifica-tion illustrated in Figs. 1-3 a further reduction from a U-Factor of approximately .2 to a U-Factor of appxoximately .13 to u15 is achieved, a substantial conservation o~ energy being thus realized.
From the foregoing, it will be appaxent that the building block and insert assembly achieves substantial improve-mant in thermal resistance or insulating characteristics, due consideration is nevertheless given to the ease and convenience with which blocks can be lifted and manipulated during transport and on site construction, and manufacture of both blocks and in-serts can be achieved at economic advantageu Still further, mo-dification or slo-t treatment of -the trallsverse webs of the building blocks is accomplished in such manner as not to effect significantly the top to bottom compressive s-trength thlereof.
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Claims (6)
1. The combination of a preformed building block of concrete and at least one preformed generally U-shaped open ended insulating insert therefor; said block having generally parallel and planar top and bottom surfaces with at least one top-to-bottom through cavity of generally rectangular cross sec-tion, said block also having opposite generally parallel side sections and at least two transverse webs of substantially uni-form thickness extending between said side sections, integral at opposite ends with the side sections and defining said cavity in cooperation with said side sections, the said generally rectan-gular cross sectional configuration and dimensions of said cavity being surbject to variation within a significant range dur-ing manufacture, said insert being of a light weight cellular heat insulating and fire retardant material and having an exter-nal configuration which is generally rectangular and adapted to enter said cavity in the block, the insert when so entered hav-ing its connecting portion extending along and engaging one of said webs, its opposite legs extending along and respectively engaging said opposite side sections of the block, and its open end and the end surfaces of its legs adjacent the opposite web, the insert thus being disposed with top and bottom surfaces of its legs and connecting portion adjacent and substantially para-llel respectively with said block top and bottom surfaces and defining a second and somewhat smaller top-to-bottom through cavity within itself, and the dimension between said top and bottom insert surfaces being equal to or less than the corres-ponding dimension between the block top and bottom surfaces such that neither of said surfaces projects beyond the adjacent block top and bottom surface, and said insert being cross sectionally .
compressible with its legs slightly flexible transversely so as to accommodate said cross sectional variation in said block cavity and to provide for slight compression and firm engagement of insert external surfaces with the cavity wall and for secure frictional retention of the insert in the block cavity, said transverse block web adjacent said end surfaces of the insert and its open end having a pair of similar top-to-bottom through slots extending respectively adjacent said leg end surfaces, and said insert legs being sufficiently long and flexible respect-ively to enter said slots, said transverse block web adjacent said connecting web also having a top-to-bottom through slot, said insert having an integral external top-to-bottom extending projection on its said connecting portion entering said slot,and each of said slots having a depth at least one fourth (1/4) the thickness of its web so as to locally reduce web thickness, a width at least three fourths (3/4) of an inch, and a total vol-ume equal to at least one fourth (1/4) the volume found by mul-tiplying web thickness times web height times the width at the mouth of the slot.
compressible with its legs slightly flexible transversely so as to accommodate said cross sectional variation in said block cavity and to provide for slight compression and firm engagement of insert external surfaces with the cavity wall and for secure frictional retention of the insert in the block cavity, said transverse block web adjacent said end surfaces of the insert and its open end having a pair of similar top-to-bottom through slots extending respectively adjacent said leg end surfaces, and said insert legs being sufficiently long and flexible respect-ively to enter said slots, said transverse block web adjacent said connecting web also having a top-to-bottom through slot, said insert having an integral external top-to-bottom extending projection on its said connecting portion entering said slot,and each of said slots having a depth at least one fourth (1/4) the thickness of its web so as to locally reduce web thickness, a width at least three fourths (3/4) of an inch, and a total vol-ume equal to at least one fourth (1/4) the volume found by mul-tiplying web thickness times web height times the width at the mouth of the slot.
2. The combination comprising a preformed building block and insulating insert as set forth in claim 1 wherein said slots have a depth approximately one half (1/2) the thickness of the webs, and wherein total volume of each is equal to approxi-mately one half (1/2) the volume found by multiplying web thick-ness times web height times the width at the mouth of the slot
3. The combination comprising a preformed building block and insulating insert as set forth in claim 1 wherein two (2) substantially identical cavities are formed in the building block, wherein three (3) transverse webs of substantially uni-form thickness are formed with one web intermediate the cavities and with the remaining two webs disposed respectively adjacent outer ends of the cavities, the said webs being thus located approximately at opposite ends of the block, and wherein a U-shaped insert is provided for each of said cavities.
4. The combination comprising a preformed building block and insulating insert as set forth in claim 3 wherein said webs are provided with slots as aforesaid, wherein said inserts are disposed in their respective cavities with their body por-tions adjacent said intermediate web and the ends of their legs adjacent said opposite end webs, said insert legs and integral projections entering and fitting said slots as aforesaid.
5. The combination comprising a preformed building block and insulating insert as set forth in claim 4 wherein said intermediate web slots respectively on opposite sides thereof are spaced transversely from each other, and wherein the insert integral projections respectively enter and substantially fill said slots, said inserts being identical but oppositely oriented in their cavities.
6. The combination as set forth in claim 5 wherein said inserts are of a molded expandible polystyrene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA273,165A CA1059336A (en) | 1977-03-03 | 1977-03-03 | Insulated block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA273,165A CA1059336A (en) | 1977-03-03 | 1977-03-03 | Insulated block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1059336A true CA1059336A (en) | 1979-07-31 |
Family
ID=4108074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA273,165A Expired CA1059336A (en) | 1977-03-03 | 1977-03-03 | Insulated block |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1059336A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4557093A (en) * | 1984-02-10 | 1985-12-10 | Epsm Inc. | Insulated building block |
| US4557094A (en) * | 1984-02-10 | 1985-12-10 | Epsm Inc. | Insulated block building |
| CN111188452A (en) * | 2020-03-16 | 2020-05-22 | 晋江市美石美刻工艺美术品有限公司 | Light heat-preservation sound-insulation decorative building block and production process thereof |
-
1977
- 1977-03-03 CA CA273,165A patent/CA1059336A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4557093A (en) * | 1984-02-10 | 1985-12-10 | Epsm Inc. | Insulated building block |
| US4557094A (en) * | 1984-02-10 | 1985-12-10 | Epsm Inc. | Insulated block building |
| CN111188452A (en) * | 2020-03-16 | 2020-05-22 | 晋江市美石美刻工艺美术品有限公司 | Light heat-preservation sound-insulation decorative building block and production process thereof |
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