CA1287522C - Door sill and threshold assembly - Google Patents
Door sill and threshold assemblyInfo
- Publication number
- CA1287522C CA1287522C CA000499873A CA499873A CA1287522C CA 1287522 C CA1287522 C CA 1287522C CA 000499873 A CA000499873 A CA 000499873A CA 499873 A CA499873 A CA 499873A CA 1287522 C CA1287522 C CA 1287522C
- Authority
- CA
- Canada
- Prior art keywords
- sill
- unit
- stops
- assemblies
- jamb
- 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 - Lifetime
Links
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
- E06B3/96—Corner joints or edge joints for windows, doors, or the like frames or wings
- E06B3/9632—Corner joints or edge joints for windows, doors, or the like frames or wings between a jamb and the threshold or sill of window or door frames
-
- 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
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/70—Sills; Thresholds
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Corner Units Of Frames Or Wings (AREA)
- Special Wing (AREA)
Abstract
ABSTRACT
An improved one piece injection molded sill unit is disclosed for use in a door frame having a jamb assembly on each of a pair of parallel sides. The unit has raised locator stops projecting from each end of the top of the sill unit adjacent a threshold portion. The stops abut rabbets on the jamb assemblies to allow simple and easy alignment of the unit with the jamb assemblies. The unit also has end walls and spaced apart ribs on its hollow underside.
An improved one piece injection molded sill unit is disclosed for use in a door frame having a jamb assembly on each of a pair of parallel sides. The unit has raised locator stops projecting from each end of the top of the sill unit adjacent a threshold portion. The stops abut rabbets on the jamb assemblies to allow simple and easy alignment of the unit with the jamb assemblies. The unit also has end walls and spaced apart ribs on its hollow underside.
Description
~2~6-565 BACKGROIlND OF THE INvm~TIoN
Resldential and commercial huildiny de.siyn and construction have been continually changiny to meet the increased demands for energy conservation, safety, fire protection, etc. These demands have also been incorporated into an increasing amount of prefabricated housiny and bullding components. Today, many parts of a building are prefabricated as opposed to being constructed on site. This is particulary -true with door frame construction.
With increased concern over energy consumption, there has been a proliferation of new designs in thermally efficient doors and windows. There has also been a trend to move away from conventlonal bullding supplies such as wood in favor of more durable and formable materia1s such as plastics and metal alloys. ~ :
~ .
In con~unction with new demands and design criteria for building supplies, there has also been an increased demand :: : :
from the general public for new and retrofit construction goods that are~c~apable of being installed by the homeowner and the 20 general purc~haser. Products for this area of the market must be simple to use and install given the general lack of knowledge~and proper tools of the purchaser.
It is therefore an object of the present invention to provlde~a sil;l unlt~;that is lightweight, one piece, easy to insta;ll~and s~elf-~aligning. It is a ~urther object of the present~invention~to provide a slll unit that is easily slzable ~for vàrying~wi~dths~of~doors.
~ Other objeats and advantages of the present invention will b~ecome~apparent from a review of the following 30 specifi;catlon,~drawing~s and claims. -': : ~ ,:
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~ 2~752~
~22~-565 SUHMARY OF THE INVENTION
The present lnventlon relates to an improved sill unit for use with new and pre-exlstlny door frame s;tructures The sill unit is designed to be used with a door frame having a pair of opposed parallel door jambs. Each of the jambs has a rabbet attached thereto which does not extend down to the bottom of the jamb. The sill unit is a one piece injection molded sill with a threshold integrally formed on ~he sill. -~
Projecting outwardly from either end of the sill and adjacent the threshold are raised locator stops. The locator stops are designed to abut the rabbets of the door frame as the assembly is slid into the door frame to automatically align the front and back edges of the sill with the front and back of the door frame.
The sill unit has a hollow bottom and closed ends.
The closed ends provide~a convenient easlly sealable, surface for securing;the assembly to the door frame. The holIow bottom has a plurality of ribs both perpendicular and parallel to the closed ends wh~ich support the unit and breakup air flow to make the unit more therma~lly efflclent. The ribs parallel to the closed end~s are at spaced apart intervals to allow reduced sizlng~of the;unlt~for smaller door frames. By severing ;
portlons~of~the unlt adjacent the exterlor sideæ of the ribs, the~unlt~can be reduc~d in size while still maintaining a closed~end configuration. Thus, the unit can be properly sized :, , for common width doors as required to balance inventory. ~
Accordl~ng to a brcad aspect of the invention there is ~ .
~provlded, ln~an~improved sill unit for use in a door frame having a~jamb assembly on each of a pair of paràllel sides, each~of sald~amb~ assemblies including a front, a bottom and a side~wlth~a rabbet, said rabbets not extending to the bottom '~
,,,,"~ . ,;
375~
~ 6-5~5 of said jamb assemblies, the unit comprising a one piece molded sill, said sill having a Eront edge, a rear edge and end ~7alls integrally formed adjacent the ends of said sill, said sill defining a top and raised locator stops projecting from each end of said top of said sill, said stops being positloned between said top of said sill and said rahbets, each of said stops having a horizontal first surface and a vertical leading edge, whereby said leading edges of said stops abut said rabbets and align said unit with ~he jamb assemblies.
According to another broad aspect of the invention there is provided, in an improved sill unit for use in a door frame having a pair of parallel jamb asse=blies, each of said iamb a,sse=blies inaludiny a frcnt, a back, a bottom and a side ~;
with a~rabbet, said rabbets not extending to the bottom of said ]a=b asse=~b~lies~, said unit comprisinq a one piece molded sill, sald slll defining a top and:raised lccator stops projecting from each e~nd of said top of said ~ill, said stops belng poeltlcned~be~tween;~sald: tcp cf said sill and said rabbets, each of said stcps havlng a horizontal first surface and a vertical : :
leading~edge~ wher~eby said Ieadlng edges of said stops abut said~rabbets and~align said:unit:;with the jamb assemblies, said :sill~further h~a~vlng end walls and a front and a rear edge . .:
dopend;i~ng:~fro= :said~tcp, said sill extending upwardly from said ~:
top~ adjacent~-said rear edge, said sill having a cap, a first -~.
leg~:~and a~secon~d leg,~ said~second leg being joined to said rear edge~of~said~Yi~ by: a horiæcntal lip, said top of said sill slanting~downwardly tc said front edge cf said sill, said raised~locator~stops~prcjectinq from either end of said top of said::sill;:ad~jacent said first leg of said threshold, said stops . ::~
: 30 : :acting~to~ abut~said rabbeta when said unit is inserted between ;~ said~ja=b asY~e=bllYs thereby aligning sald front edge of said :~ :
~ 2~37522 2~236-565 sill with said fron~s of said jamb assemblies and said rear edge of said sill with said backs of sa.ld jamb assemblies.
According to another broad aspect of ~he invention there is provided, in an improved sill unit for use with a door frame having a pair of parallel jamb assemblies, èach of said jamb assemblies including a front, a back, a bottom and a side with a rabbet, said rabbets not extending to the bottom of said jamb assemblies, the unit comprising a one piece injection molded sill, said slll defining a top and raised locator stops projecting from each end of said top of said sill, said stops being positioned between said top of said sill and said rabbet assemblies, whereby said stops align said unit with the jamb assemblles, sald sill further having a hollow bottom with end walls and a front and a rear edqe dependlng from said top, said sill extending upwardly from said top adjacent said rear edge, said s~ having a;cap, a fi~rst ~leg and a second leg, said second leg beln~g ~oined to said rear edge of said sill by a horizontal lip, said top o~f sa~ld sill~slanting downwardly to ~- .
sàid~front e~dge of said sill, said hollow bottom having a first ~plurality~of~ spàced apart parallel rlbs perpendlcular to said closed~ends~ and a second plurality of spaced apart ribs ;
-paràllel to;sald end~wal16~for reduced sizing of said unit andmal;ntaining~ a closed~end configuration for~sald unit, said raised`locator stops~projecting from either end of said top of ~sald~sill~6djacent~6aid first leg of said threshold, said stops actinq~to~abut~said rabbet assemblies when said unit is -~ nse~r~ed~betwe~en said jamb assemblies thereby aligning said front~;e~dge~of said sill wlth said fronts o~ said iamb as6emblie6 and~said rear edge of said sil} with said backs of ~said jamb~assemblies.
:
~ 4a -s~z BRIEF ES ~IPT _N OF_rHE DRA~lINGS
Figure l ls a partial side view of a sill unit according to the present invenklon posi~ioned ad~acerlt to and aligned with a door frame.
Figure 2 is an exploded partial side vie~ of a sill unit according to the present inventlon prior to its attachment to a door frame.
Figure 3 is a cross-sectioned view of the sill unit in Figure l taken along line 3-3.
F1gure 4 is a segmented bottom view of the sill unit according to tbe present lnvention.
Fiqure 5 lS a fragmentary perspective view sho~7ing the closed end o2 the sill unit in relation to a door jamb.
Figure 6 is an end view showing the sill unit in :
relation to a door having a door bottom and sill assemhly .
mounted on its lower edge.
, DES~RIPTIO~ OF THE PREF D EMBODIMENT
Referr1ng to Eigure 1 there is shown a sill unit . ;~
~hereinafter termed a slll and threshold assembly) l0 in abutting relationship with; one side~of a door frame 12. The oppos~te side of the door frame 12 is identical to that shown ~-in~Figure~l~. Furthe~rm~ore, it should be understood that the ~door~f~rame~12~1s~meant to~be representative of door frames in ~general and~not meant to limit the present invention to this spec~1fic~des1gn~of door frame.
The~door frame 12 consists of a door jamb 14 and a r~abbet~16.~The~amb;I4 has a front 18, back 20, interior slde 22 ~and~;bobtom 24. T ~he rabbet 16 is attached to the interior side~22~of~amb 14~ Rabbet 16 has a front face 26, rear face 28~and side~surface 30. The rabbet l~ does not extend down to ~-4b ~ ;
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., . . . . , , , , ~ . . . . . . .
~75~ ~22~6-565 the bottom 24 of the jamb 14 thus enabllng the sill assembly 10 to be slid underneath the rabbet 16 durlny installa~ion. As ~an be seen in Figure 1, the door frame 1~ can also be fltted with a piece of weatherstrlp 32 alony the rear face 28 of rabbet 16 and ad~acent the jamb 14.
Referring to Fiyures 2 and 3, the assembly 10 is a one piece injection molded construction with a sill 34 and a threshold 36 integrally formed on the sill 34. The sill 34 has a top 38 wlth a raised locator stop 40 projecting from each end of the sill top 38. The stops 40 are designed to be . .
complementary with the rabbet 16 whereby the stops 40 abut the rear faces 2a of rabbets 16 and align the assembly 10 with the door frame 12.
, The top 38 of~the sill 34 is provided with a decorative wood grain finish 78.
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This graining is provided during molding. The top 38 may be stained or painted if desired.
In addition -to the top 38, the sill has a hollow bottom 42 and closed end~. 44. Dependiny Erom the top 38 is a front edge 46 and a rear edge 48. As can be seen in Fig. 3, the top 38 of sill 34 slants downwardly fro~ the threshold 36 to the front edge 46. This is to permit water runo-ff should the assembly lO be used with a door frame assembly on -the exterior of a building. The front edge 46 and internal ribs 62 act as a drip lip structure to prevent wa-ter from moving upwardly or wicking upwardly toward the door opening. -The integrally molded threshold 36 extends upwardly from the top 38 of sill 34 adjacent the rear edge 48. The ~;
threshold 36 consists of a cap 50, a first leg 52 and a second leg 54. The second leg 54 is joined to the rear edge 48 of ; sill~34 by a horizontal lip 56 wh1ch runs the length of the sill 34. As can be seen in Fig. 3, the cap 50 of threshold 36 ;~
also slants toward the front edge 46 of sill 34 for the same reasons explained above.
The r~a1sed locator stops 40 project outwardly from the first leg 52 of threshold 36 in a direction toward the - ~front edge 46 of s~ill 34. Referring to Figs. 2 and 3, the raised~ locatar stops 40 have a horizontal first surface 58 and ` a ver~tical leading edge 60. ~The vertical leading edge 60 of ~stop 40~is suffic1ently high~so that when the asse~bly lO is slid into the~door frame 12, it will abut the rear face 28 of rabbet 16~thereby preventing ~further travel of the assembly lO.
Generally, a height of about l/8 of an inch to one inch should :
30 be sufficient~to ensured that the stop 40 will contact the ~
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: ' ~: ,., : : ' ~ 5~ 22236-565 rabbet 16. The stop 40 in Fig. 1 i5 approximately equal in width to the width of rear face 28 of the rabbet 16.
When the vertical leading edge 60 of the stop 40 abuts the rabbet 16, the assembly 10 will be aligned with the front 18 and back 20 of door jamb 14. Specifically, and as can be seen in Figure 3, when the assembly 10 is driven into the door frame 12 a sufficient distance such that the locator stop 40 is abutting rabbet 16, the front edge 46 of sill 34 will be in alignment with the front 18 of jamb 14 and the rear edge 48 of sill 34 will be in alignment with the back 20 of jamb 14.
Thus, it can be seen that the use of the raised locator stops 40 at either end of the assembly 10 provides a simple yet accurate method of aligning the assembly 10 with the door frame 12. This makes it extremely easy for both the professional and ` amateur to properly install a sill and -threshold assembly 10 constructed in conformity with applicant's invention.
The construction of the bottom side 42 of the sill 34 is also important, especially when the assembly 10 will be attached to a door frame 12 prior to the installation of the assembly 10 and frame 12 into the building structure. `
Referring to Flgs. 3 and 4, the hollow bottom 42 of sill 34 has a first plurality of spaced-apart ribs 62 which are .
~ perpendicular to the closed ends 44 of sill 34. These ribs 62 :
serve to~etrengthen the sill 34 while still keeping the assembly lO~lightweight. Ribs 62 depend Erom the hollow bottom 42 far enough to contact the floor 70 below the assembly 10.
As~ a result, ribs 62 act to block air f:Low underneath the sill 34~from the`front edge 46 to the rear edge 48 and vice versa, thus~making the assembly more thermally efficient.
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~2~36-565 As shown in Fig. 5, the closed ends 44 of the sill 34 form an integral and strong structure. Adhesive i~ preferably applied to the outer surface of the closed ends 44 thus forming a tight seal with the jamb 14.
The hollow bottom side 42 also has a second plurality of spaced apart ribs 64 which are parallel to the closed ends 44. These ribs 64 perform a three-fold function. First, they provide support for the assembly 10 as they also depend from the bottom 42 a sufficient distance to contact the floor 70.
Second, the rlbs 64 act to breakup air flow under -the sill 34 in the same fashion as the first plurality of ribs 62. Third, and more importantly, the second plurality of ribs 64 provide an easy means of shortening the width of the assembly lO to accommodate shorter~doorways. The outermost ribs 64 at the ends of sill~34 are spaced at l inch intervals thereby forming segmented end sections 66 and 68. The most common door width -is 36 ~i~nches, however, doors are also made with smaller widths ~, includlng 34, 32 and 30 inches.~ By placing the ribs 64 at l ., ~ , : , , inch intervals,~the assembly l0 can be reduced in size by ` 20 simply~cuttlng off the required~number of end;segments 66 and 68 to~a~rrive at the desir~ed width. For example, to reduce the -width~of~the assembly 10 from its standard 36 inch width to 34 ~inches~ end~segments 66 on either end of the assembly lO are ` severed~by~cutting them along dotted lines 5-5 in Fig. 4. This results i~n~an~assembly of the desired width while still maint~ai~ning~the closed end con~figuration to facilitate ; ; attachment~of~the~ assembly lO to door Erame 12. Similarly, to reduce the~width of~the assembly lO to 32 inches, end segments 66~and~68~;~are~severed~`from~either end of the sill and threshold ~30 a~-emb~:T IO~
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22~36-565 If the sill and threshold asseTnbly 10 is to be made for reduced sizing then the width of the raised locator stops 40 must be increased. Otherwise, the stop~ 40 will be lost ! when the end ,segments 66 and 68 are rernoved from the assembly10. To accommodate this problem, the locator s-tops 40 should be extended inwardly from the closed ends 44 approximately 2 to 4 lnches on either side. Thus, when a segment 66 or segments 66 and 68 are removed, there will still be a sufficient portion of the raised locator stops 40 remaining to abut the rabbets 16. Also, note that the height of the raised loca-tor stops 40 ; is sufficiently small so that increasing their width will not cause safety problems for people stepping on the 9ill and threshold assembly. In fact, the locator stops 40 can be formed to extend all~the way across the sill and threshold assembly 10 without a~fecting the performance of the assembly 10.
To install the sill and threshold assembly 10 in door . frame 12 the assembly 10 is sized for the particular width door ~; frame 12. Sealant or adhesive is preferably placed on the vertical surfaces such as the closed ends 44. The front edge :
46 of sill 34 is then inserted between the door jambs 14 and underneath the~rabbets 16 until the raised locator stops 40 : : :
abut~the rear faces;28 of rabbets 16. At this point, the assembly 10~ is ln alignment with~the door frame 12 and staples ` 72~or~other;suitable means such as nails can be used to secure -~-~the~slll~and~threshold assembly 10 to the door frame 12 via the cloe~ed~ends 42~of sil~l 34. See Figs. 2 and 3.
Referrlng~to~Figs. l and 3, it can be seen that once ;
the~raised~lo~ator~stops 40 contact the rabbets 16, further ` ~ insertion~of~the assembly 10 into the door is impossible. As a result,~ the Iocator stops 40 provide an easy and sure means for :: ~ , :
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~ 7S~ 22236~565 properly aligning the sill and threshold assembly 10 with the front 18 and back 20 of door jamb 14. In addition, the closed end configuration and segmented end sections provide an easy means for reduced sizing of the sill and threshold assembly for smaller sized standard door frame widths.
Refexring to Fig. 6, a sill and threshold assembly 10 is shown together with a door 80. The door has an inswing door bottom and sill assembly 81 mounted on it low edge. The door bottom and sill assembly 81 is constructed in accordance with United States Patent No. 4,411,104. A tubular sealing member 82 extends along the inner edge of the door 80 and projects downwardly. T~e cap 50 and second leg 54 of the threshold 36 define a horizontally extending projection 85 adjacent the inner edge of the door 80. The projection 85 engages and deflects the sealing member 82, as shown in Fig. 6, to provide --a weather impervious barrier.
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Having thus~ described the invention in detail it should be understood that various modifications and changes can .
be made in the inventi~on without departlng from the scope and -~
spirit of the~following claims.
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Resldential and commercial huildiny de.siyn and construction have been continually changiny to meet the increased demands for energy conservation, safety, fire protection, etc. These demands have also been incorporated into an increasing amount of prefabricated housiny and bullding components. Today, many parts of a building are prefabricated as opposed to being constructed on site. This is particulary -true with door frame construction.
With increased concern over energy consumption, there has been a proliferation of new designs in thermally efficient doors and windows. There has also been a trend to move away from conventlonal bullding supplies such as wood in favor of more durable and formable materia1s such as plastics and metal alloys. ~ :
~ .
In con~unction with new demands and design criteria for building supplies, there has also been an increased demand :: : :
from the general public for new and retrofit construction goods that are~c~apable of being installed by the homeowner and the 20 general purc~haser. Products for this area of the market must be simple to use and install given the general lack of knowledge~and proper tools of the purchaser.
It is therefore an object of the present invention to provlde~a sil;l unlt~;that is lightweight, one piece, easy to insta;ll~and s~elf-~aligning. It is a ~urther object of the present~invention~to provide a slll unit that is easily slzable ~for vàrying~wi~dths~of~doors.
~ Other objeats and advantages of the present invention will b~ecome~apparent from a review of the following 30 specifi;catlon,~drawing~s and claims. -': : ~ ,:
~ : :
;
~ ~ 2 ~
.. ,.. ~ :. , : . , .
~ 2~752~
~22~-565 SUHMARY OF THE INVENTION
The present lnventlon relates to an improved sill unit for use with new and pre-exlstlny door frame s;tructures The sill unit is designed to be used with a door frame having a pair of opposed parallel door jambs. Each of the jambs has a rabbet attached thereto which does not extend down to the bottom of the jamb. The sill unit is a one piece injection molded sill with a threshold integrally formed on ~he sill. -~
Projecting outwardly from either end of the sill and adjacent the threshold are raised locator stops. The locator stops are designed to abut the rabbets of the door frame as the assembly is slid into the door frame to automatically align the front and back edges of the sill with the front and back of the door frame.
The sill unit has a hollow bottom and closed ends.
The closed ends provide~a convenient easlly sealable, surface for securing;the assembly to the door frame. The holIow bottom has a plurality of ribs both perpendicular and parallel to the closed ends wh~ich support the unit and breakup air flow to make the unit more therma~lly efflclent. The ribs parallel to the closed end~s are at spaced apart intervals to allow reduced sizlng~of the;unlt~for smaller door frames. By severing ;
portlons~of~the unlt adjacent the exterlor sideæ of the ribs, the~unlt~can be reduc~d in size while still maintaining a closed~end configuration. Thus, the unit can be properly sized :, , for common width doors as required to balance inventory. ~
Accordl~ng to a brcad aspect of the invention there is ~ .
~provlded, ln~an~improved sill unit for use in a door frame having a~jamb assembly on each of a pair of paràllel sides, each~of sald~amb~ assemblies including a front, a bottom and a side~wlth~a rabbet, said rabbets not extending to the bottom '~
,,,,"~ . ,;
375~
~ 6-5~5 of said jamb assemblies, the unit comprising a one piece molded sill, said sill having a Eront edge, a rear edge and end ~7alls integrally formed adjacent the ends of said sill, said sill defining a top and raised locator stops projecting from each end of said top of said sill, said stops being positloned between said top of said sill and said rahbets, each of said stops having a horizontal first surface and a vertical leading edge, whereby said leading edges of said stops abut said rabbets and align said unit with ~he jamb assemblies.
According to another broad aspect of the invention there is provided, in an improved sill unit for use in a door frame having a pair of parallel jamb asse=blies, each of said iamb a,sse=blies inaludiny a frcnt, a back, a bottom and a side ~;
with a~rabbet, said rabbets not extending to the bottom of said ]a=b asse=~b~lies~, said unit comprisinq a one piece molded sill, sald slll defining a top and:raised lccator stops projecting from each e~nd of said top of said ~ill, said stops belng poeltlcned~be~tween;~sald: tcp cf said sill and said rabbets, each of said stcps havlng a horizontal first surface and a vertical : :
leading~edge~ wher~eby said Ieadlng edges of said stops abut said~rabbets and~align said:unit:;with the jamb assemblies, said :sill~further h~a~vlng end walls and a front and a rear edge . .:
dopend;i~ng:~fro= :said~tcp, said sill extending upwardly from said ~:
top~ adjacent~-said rear edge, said sill having a cap, a first -~.
leg~:~and a~secon~d leg,~ said~second leg being joined to said rear edge~of~said~Yi~ by: a horiæcntal lip, said top of said sill slanting~downwardly tc said front edge cf said sill, said raised~locator~stops~prcjectinq from either end of said top of said::sill;:ad~jacent said first leg of said threshold, said stops . ::~
: 30 : :acting~to~ abut~said rabbeta when said unit is inserted between ;~ said~ja=b asY~e=bllYs thereby aligning sald front edge of said :~ :
~ 2~37522 2~236-565 sill with said fron~s of said jamb assemblies and said rear edge of said sill with said backs of sa.ld jamb assemblies.
According to another broad aspect of ~he invention there is provided, in an improved sill unit for use with a door frame having a pair of parallel jamb assemblies, èach of said jamb assemblies including a front, a back, a bottom and a side with a rabbet, said rabbets not extending to the bottom of said jamb assemblies, the unit comprising a one piece injection molded sill, said slll defining a top and raised locator stops projecting from each end of said top of said sill, said stops being positioned between said top of said sill and said rabbet assemblies, whereby said stops align said unit with the jamb assemblles, sald sill further having a hollow bottom with end walls and a front and a rear edqe dependlng from said top, said sill extending upwardly from said top adjacent said rear edge, said s~ having a;cap, a fi~rst ~leg and a second leg, said second leg beln~g ~oined to said rear edge of said sill by a horizontal lip, said top o~f sa~ld sill~slanting downwardly to ~- .
sàid~front e~dge of said sill, said hollow bottom having a first ~plurality~of~ spàced apart parallel rlbs perpendlcular to said closed~ends~ and a second plurality of spaced apart ribs ;
-paràllel to;sald end~wal16~for reduced sizing of said unit andmal;ntaining~ a closed~end configuration for~sald unit, said raised`locator stops~projecting from either end of said top of ~sald~sill~6djacent~6aid first leg of said threshold, said stops actinq~to~abut~said rabbet assemblies when said unit is -~ nse~r~ed~betwe~en said jamb assemblies thereby aligning said front~;e~dge~of said sill wlth said fronts o~ said iamb as6emblie6 and~said rear edge of said sil} with said backs of ~said jamb~assemblies.
:
~ 4a -s~z BRIEF ES ~IPT _N OF_rHE DRA~lINGS
Figure l ls a partial side view of a sill unit according to the present invenklon posi~ioned ad~acerlt to and aligned with a door frame.
Figure 2 is an exploded partial side vie~ of a sill unit according to the present inventlon prior to its attachment to a door frame.
Figure 3 is a cross-sectioned view of the sill unit in Figure l taken along line 3-3.
F1gure 4 is a segmented bottom view of the sill unit according to tbe present lnvention.
Fiqure 5 lS a fragmentary perspective view sho~7ing the closed end o2 the sill unit in relation to a door jamb.
Figure 6 is an end view showing the sill unit in :
relation to a door having a door bottom and sill assemhly .
mounted on its lower edge.
, DES~RIPTIO~ OF THE PREF D EMBODIMENT
Referr1ng to Eigure 1 there is shown a sill unit . ;~
~hereinafter termed a slll and threshold assembly) l0 in abutting relationship with; one side~of a door frame 12. The oppos~te side of the door frame 12 is identical to that shown ~-in~Figure~l~. Furthe~rm~ore, it should be understood that the ~door~f~rame~12~1s~meant to~be representative of door frames in ~general and~not meant to limit the present invention to this spec~1fic~des1gn~of door frame.
The~door frame 12 consists of a door jamb 14 and a r~abbet~16.~The~amb;I4 has a front 18, back 20, interior slde 22 ~and~;bobtom 24. T ~he rabbet 16 is attached to the interior side~22~of~amb 14~ Rabbet 16 has a front face 26, rear face 28~and side~surface 30. The rabbet l~ does not extend down to ~-4b ~ ;
:
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~75~ ~22~6-565 the bottom 24 of the jamb 14 thus enabllng the sill assembly 10 to be slid underneath the rabbet 16 durlny installa~ion. As ~an be seen in Figure 1, the door frame 1~ can also be fltted with a piece of weatherstrlp 32 alony the rear face 28 of rabbet 16 and ad~acent the jamb 14.
Referring to Fiyures 2 and 3, the assembly 10 is a one piece injection molded construction with a sill 34 and a threshold 36 integrally formed on the sill 34. The sill 34 has a top 38 wlth a raised locator stop 40 projecting from each end of the sill top 38. The stops 40 are designed to be . .
complementary with the rabbet 16 whereby the stops 40 abut the rear faces 2a of rabbets 16 and align the assembly 10 with the door frame 12.
, The top 38 of~the sill 34 is provided with a decorative wood grain finish 78.
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This graining is provided during molding. The top 38 may be stained or painted if desired.
In addition -to the top 38, the sill has a hollow bottom 42 and closed end~. 44. Dependiny Erom the top 38 is a front edge 46 and a rear edge 48. As can be seen in Fig. 3, the top 38 of sill 34 slants downwardly fro~ the threshold 36 to the front edge 46. This is to permit water runo-ff should the assembly lO be used with a door frame assembly on -the exterior of a building. The front edge 46 and internal ribs 62 act as a drip lip structure to prevent wa-ter from moving upwardly or wicking upwardly toward the door opening. -The integrally molded threshold 36 extends upwardly from the top 38 of sill 34 adjacent the rear edge 48. The ~;
threshold 36 consists of a cap 50, a first leg 52 and a second leg 54. The second leg 54 is joined to the rear edge 48 of ; sill~34 by a horizontal lip 56 wh1ch runs the length of the sill 34. As can be seen in Fig. 3, the cap 50 of threshold 36 ;~
also slants toward the front edge 46 of sill 34 for the same reasons explained above.
The r~a1sed locator stops 40 project outwardly from the first leg 52 of threshold 36 in a direction toward the - ~front edge 46 of s~ill 34. Referring to Figs. 2 and 3, the raised~ locatar stops 40 have a horizontal first surface 58 and ` a ver~tical leading edge 60. ~The vertical leading edge 60 of ~stop 40~is suffic1ently high~so that when the asse~bly lO is slid into the~door frame 12, it will abut the rear face 28 of rabbet 16~thereby preventing ~further travel of the assembly lO.
Generally, a height of about l/8 of an inch to one inch should :
30 be sufficient~to ensured that the stop 40 will contact the ~
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: ' ~: ,., : : ' ~ 5~ 22236-565 rabbet 16. The stop 40 in Fig. 1 i5 approximately equal in width to the width of rear face 28 of the rabbet 16.
When the vertical leading edge 60 of the stop 40 abuts the rabbet 16, the assembly 10 will be aligned with the front 18 and back 20 of door jamb 14. Specifically, and as can be seen in Figure 3, when the assembly 10 is driven into the door frame 12 a sufficient distance such that the locator stop 40 is abutting rabbet 16, the front edge 46 of sill 34 will be in alignment with the front 18 of jamb 14 and the rear edge 48 of sill 34 will be in alignment with the back 20 of jamb 14.
Thus, it can be seen that the use of the raised locator stops 40 at either end of the assembly 10 provides a simple yet accurate method of aligning the assembly 10 with the door frame 12. This makes it extremely easy for both the professional and ` amateur to properly install a sill and -threshold assembly 10 constructed in conformity with applicant's invention.
The construction of the bottom side 42 of the sill 34 is also important, especially when the assembly 10 will be attached to a door frame 12 prior to the installation of the assembly 10 and frame 12 into the building structure. `
Referring to Flgs. 3 and 4, the hollow bottom 42 of sill 34 has a first plurality of spaced-apart ribs 62 which are .
~ perpendicular to the closed ends 44 of sill 34. These ribs 62 :
serve to~etrengthen the sill 34 while still keeping the assembly lO~lightweight. Ribs 62 depend Erom the hollow bottom 42 far enough to contact the floor 70 below the assembly 10.
As~ a result, ribs 62 act to block air f:Low underneath the sill 34~from the`front edge 46 to the rear edge 48 and vice versa, thus~making the assembly more thermally efficient.
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~2~36-565 As shown in Fig. 5, the closed ends 44 of the sill 34 form an integral and strong structure. Adhesive i~ preferably applied to the outer surface of the closed ends 44 thus forming a tight seal with the jamb 14.
The hollow bottom side 42 also has a second plurality of spaced apart ribs 64 which are parallel to the closed ends 44. These ribs 64 perform a three-fold function. First, they provide support for the assembly 10 as they also depend from the bottom 42 a sufficient distance to contact the floor 70.
Second, the rlbs 64 act to breakup air flow under -the sill 34 in the same fashion as the first plurality of ribs 62. Third, and more importantly, the second plurality of ribs 64 provide an easy means of shortening the width of the assembly lO to accommodate shorter~doorways. The outermost ribs 64 at the ends of sill~34 are spaced at l inch intervals thereby forming segmented end sections 66 and 68. The most common door width -is 36 ~i~nches, however, doors are also made with smaller widths ~, includlng 34, 32 and 30 inches.~ By placing the ribs 64 at l ., ~ , : , , inch intervals,~the assembly l0 can be reduced in size by ` 20 simply~cuttlng off the required~number of end;segments 66 and 68 to~a~rrive at the desir~ed width. For example, to reduce the -width~of~the assembly 10 from its standard 36 inch width to 34 ~inches~ end~segments 66 on either end of the assembly lO are ` severed~by~cutting them along dotted lines 5-5 in Fig. 4. This results i~n~an~assembly of the desired width while still maint~ai~ning~the closed end con~figuration to facilitate ; ; attachment~of~the~ assembly lO to door Erame 12. Similarly, to reduce the~width of~the assembly lO to 32 inches, end segments 66~and~68~;~are~severed~`from~either end of the sill and threshold ~30 a~-emb~:T IO~
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22~36-565 If the sill and threshold asseTnbly 10 is to be made for reduced sizing then the width of the raised locator stops 40 must be increased. Otherwise, the stop~ 40 will be lost ! when the end ,segments 66 and 68 are rernoved from the assembly10. To accommodate this problem, the locator s-tops 40 should be extended inwardly from the closed ends 44 approximately 2 to 4 lnches on either side. Thus, when a segment 66 or segments 66 and 68 are removed, there will still be a sufficient portion of the raised locator stops 40 remaining to abut the rabbets 16. Also, note that the height of the raised loca-tor stops 40 ; is sufficiently small so that increasing their width will not cause safety problems for people stepping on the 9ill and threshold assembly. In fact, the locator stops 40 can be formed to extend all~the way across the sill and threshold assembly 10 without a~fecting the performance of the assembly 10.
To install the sill and threshold assembly 10 in door . frame 12 the assembly 10 is sized for the particular width door ~; frame 12. Sealant or adhesive is preferably placed on the vertical surfaces such as the closed ends 44. The front edge :
46 of sill 34 is then inserted between the door jambs 14 and underneath the~rabbets 16 until the raised locator stops 40 : : :
abut~the rear faces;28 of rabbets 16. At this point, the assembly 10~ is ln alignment with~the door frame 12 and staples ` 72~or~other;suitable means such as nails can be used to secure -~-~the~slll~and~threshold assembly 10 to the door frame 12 via the cloe~ed~ends 42~of sil~l 34. See Figs. 2 and 3.
Referrlng~to~Figs. l and 3, it can be seen that once ;
the~raised~lo~ator~stops 40 contact the rabbets 16, further ` ~ insertion~of~the assembly 10 into the door is impossible. As a result,~ the Iocator stops 40 provide an easy and sure means for :: ~ , :
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~ 7S~ 22236~565 properly aligning the sill and threshold assembly 10 with the front 18 and back 20 of door jamb 14. In addition, the closed end configuration and segmented end sections provide an easy means for reduced sizing of the sill and threshold assembly for smaller sized standard door frame widths.
Refexring to Fig. 6, a sill and threshold assembly 10 is shown together with a door 80. The door has an inswing door bottom and sill assembly 81 mounted on it low edge. The door bottom and sill assembly 81 is constructed in accordance with United States Patent No. 4,411,104. A tubular sealing member 82 extends along the inner edge of the door 80 and projects downwardly. T~e cap 50 and second leg 54 of the threshold 36 define a horizontally extending projection 85 adjacent the inner edge of the door 80. The projection 85 engages and deflects the sealing member 82, as shown in Fig. 6, to provide --a weather impervious barrier.
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Having thus~ described the invention in detail it should be understood that various modifications and changes can .
be made in the inventi~on without departlng from the scope and -~
spirit of the~following claims.
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Claims (5)
1. In an improved sill unit for use in a door frame having a jamb assembly on each of a pair of parallel sides, each of said jamb assemblies including a front, a bottom and a side with a rabbet assemblies, said rabbets not extending to the bottom of said jamb assemblies, the unit comprising, a one piece molded sill, said sill having a front edge, a rear edge and end walls integrally formed adjacent the ends of said sill, said sill defining a top and raised locator stops projecting from each end of said top of said sill, said stops being positioned between said top of said sill and said rabbets, each of said stops having a horizontal first surface and a vertical leading edge, whereby said leading edges of said stops abut said rabbets and align said unit with the jamb assemblies.
2. In an improved sill unit for use in a door frame having a pair of parallel jamb assemblies, each of said jamb assemblies including a front, a back, a bottom and a side with a rabbet, said rabbets not extending to the bottom of said jamb assemblies, said unit comprising a one piece molded sill, said sill defining a top and raised locator stops projecting from each end of said to of said sill, said stops being positioned between said top of said sill and said rabbets, each of said stops having a horizontal first surface and a vertical leading edge, whereby said leading edges of said stops abut said rabbets and align said unit with the jamb assemblies, said sill further having end walls and a front and a rear edge depending from said top, said sill extending upwardly from said top adjacent said rear edge, said sill having a cap, a first leg and a second leg, said second leg being joined to said rear edge of said sill by a horizontal lip, said top of said sill slanting downwardly to said front edge of said sill, said raised locator stops projecting from either end of said top of said sill adjacent said first leg of said threshold, said stops acting to abut said rabbets when said unit is inserted between said lamb assemblies thereby aligning said front edge of said sill with said fronts of said jamb assemblies and said rear edge of said sill with said backs of said jamb assemblies.
3. In an improved sill unit for use with a door frame having a pair of parallel jamb assemblies, each of said jamb assemblies including a front, a back, a bottom and a side with a rabbet, said rabbets not extending to the bottom of said jamb assemblies, the unit comprising a one piece injection molded sill, said sill defining a top and raised locator stops projecting from each end of said top of said sill, said stops being positioned between said top of said sill and said rabbet assemblies, whereby said stops align said unit with the jamb assemblies, said sill further having a hollow bottom with end walls and a front and a rear edge depending from said top, said sill extending upwardly from said top adjacent said rear edge, said sill having a cap, a first leg and a second leg, said second leg being joined to said rear edge of said sill by a horizontal lip, said top of said sill slanting downwardly to said front edge of said sill, said hollow bottom having a first plurality of spaced apart parallel ribs perpendicular to said closed ends and a second plurality of spaced apart ribs parallel to said end walls for reduced sizing of said unit and maintaining a closed end configuration for said unit, said raised locator stops projecting from either end of said top of said sill adjacent said first leg of said threshold, said stops acting to abut said rabbet assemblies when said unit is inserted between said jamb assemblies thereby aligning said front edge of said sill with said fronts of said jamb assemblies and said rear edge of said sill with said backs of said jamb assemblies.
4. In an improved sill unit according to claim 3, wherein said raised locator stops have a horizontal first surface and a vertical leading edge which is adapted to abut said rabbet.
5. In an improved sill unit according to claim 4, wherein said vertical leading edge is at least 1/8 of an inch in height.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71275085A | 1985-03-18 | 1985-03-18 | |
| US712,750 | 1985-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1287522C true CA1287522C (en) | 1991-08-13 |
Family
ID=24863413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000499873A Expired - Lifetime CA1287522C (en) | 1985-03-18 | 1986-01-20 | Door sill and threshold assembly |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA1287522C (en) |
| GB (1) | GB2173239B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IE880509L (en) * | 1988-02-24 | 1989-08-24 | Brian C Allport | Draught excluder for door sill |
| EP0405374B1 (en) * | 1989-06-23 | 1995-02-15 | SCHÜRING GMBH & CO. FENSTERTECHNOLOGIE KG | Threshold for housedoor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB316080A (en) * | 1928-12-07 | 1929-07-25 | Christopher Chamley Booth | Improvements in or relating to window sills |
| GB448557A (en) * | 1934-12-07 | 1936-06-08 | Montague Jones | Improvements relating to draught-and water-excluding devices for doors |
| GB780430A (en) * | 1954-08-30 | 1957-07-31 | Montague Jones | Improvements in or relating to sills for doors |
-
1986
- 1986-01-20 CA CA000499873A patent/CA1287522C/en not_active Expired - Lifetime
- 1986-02-26 GB GB08604722A patent/GB2173239B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2173239B (en) | 1988-04-20 |
| GB8604722D0 (en) | 1986-04-03 |
| GB2173239A (en) | 1986-10-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |