US2420301A - Venetian blind - Google Patents

Venetian blind Download PDF

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US2420301A
US2420301A US564231A US56423144A US2420301A US 2420301 A US2420301 A US 2420301A US 564231 A US564231 A US 564231A US 56423144 A US56423144 A US 56423144A US 2420301 A US2420301 A US 2420301A
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slats
blind
spring
casing
line
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US564231A
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Cusumano Rudolph
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    • 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
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/303—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape
    • E06B9/305—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape with tilting bar and raising cords guided along fixed bar

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  • My invention relates to Venetian blinds of the type well known as including a plurality of spaced slats supported in spaced relation by ladder tapes, the slats being raised and lowered by cables or cords. In all such blinds, the slats are held in any raised or lowered position by fastening the raising or lowering cord or cable on a suitable anchoring device usually attached to a window or door jamb or other structural part of a building.
  • the objects of the present invention are to provide a Venetian blind in which the slats thereof maybe raised and lowered manually, Without the use of cords or cables and in which the slats may be retained in any adjusted position, Without locks or supplemental anchorage.
  • Another object of the invention is to provide in a Venetian blind, a means for counter-balancing the Weight of the blind in any raised or lowered position.
  • Another object of the invention is to provide in a Venetian blind a spring mechanism, providing tension by which the blind is held counterbalanced in any position between the limits of its movement and an adjustment by which such tension in the spring may be varied according to the weight of the blind.
  • My invention also has for its objects to pro'- vide such means that are positive in operation, convenient in use, easily installed in a Working position and easily disconnected therefrom, economical of manufacture, relatively simple, and of general superiority and serviceability.
  • Fig. l is an elevational view, partly in section of a device embodying my invention.
  • Fig. 2 is a top plan view.
  • Fig. 3 is an enlarged section on line 3 3 of Fig. 2.
  • Fig. 4 is a top plan View of a modied form of my invention.
  • Fig. 5 is a fragmentary elevational view showing the suspension means for the slats and Fig. 6 is a section on line 6 6 of Fig. 5.
  • the invention comprises a Venetian blind of usual structure, suitably suspended, as from the upper jamb of a door or a window or other opening, or from a housing that may be attached to the frame Work of a window or door.
  • the slats are operable to raised or lowered position by rotatable or oscillatable means, to Which cables or cords are connected, and the rotatable means is under tension and furnished with means by which the tension may be regulated and adjusted in accordance With the Weight of the blind in any position oi its movement, so that the blind, when manually raised or lowered, will remain in such position without further aid.
  • the invention is shown as comprising a casing or enclosure I0, open at the tcp.
  • the enclosure which may be a structural part of a building, is provided with bottom openings, around which are positioned guide members or eyes II, secured to the floor I2 of the enclosure I0.
  • the ends of said wire ropes or cables I3, are secured to opposite sides of and in a cylindrical groove I8, that forms a part of a cone member I9, hereinafter more specially referred to.
  • the Wire ropes or cables I3, pass through openings in the slats I2 0, of the blind I5, which comprises said slatsv 20, ladder tapes ZI, for supporting said slats 20 in spaced relation, and a bottom rail I4, to which the wire ropes or cables I 3 are attached in any convenient manner, whereby the rail I4 and consequently a portion of the slats 20 or all of them are held in raised or lowered position by the means detailed later herein.
  • the tapes 2I, supporting the slats 20, are secured at the top to cylindrical carriers or elements 23, that are mounted or fixed upon a common shaft 24, at spaced points thereon.
  • the shaft 24 operates in-bearings 25, and one end thereof is provided with a gear 25, in mesh with a worm 21, on a shaft 28, in and extending beyond the enclosure or housing I0.
  • the extended end of said shaft 28, mounts a grooved pulley 29, or other means, over which extends preferably an endless line, or rope 30, which is operable by pulling on one or the other of the parallel portions thereof to tilt the slats 20 in one direction or another.
  • the aforenamed cone member I9 which is journaled in a member I9 and in a bearing plate I9 is provided with a continuous spiral groove 3
  • the Vblind may be raised orlowered Yas desired, withl small, effort.v and, maintainedin Vadjusted position without any supplemental means..
  • the tensionlof the-spring .33 when .thesystem iscOnnected as eigplained, may. be, adjustedby anyy means; asa turnbllckle 3.1. Itis believed,y
  • the lor in, Fig- 4 differsfmmitheierm here tofo'rfe described, in theemplQyment of. ator7 sional spring 40,' contained .arid hQllSQd in the.. usual Ima'nneroa.conventionalspring typeloller L 511129211. .which are. @flanged to, Wind the vWire rolg'iesfofrA cablesconneoted with., the-bottom rail I 4;,"U,pon ⁇ 'the shaft; is fixedlymounted an cone member")'If,v provided with an exterior continuousspiralgroove ⁇ ,4Ii,.in and rfrom whichis adaptedto ivindorunwind a.
  • ⁇ means A.co1'ine-cted,-viith Asaid rail vto opposite sides used to lift the blind, as it must be in the present instance, it is desirable to coat, cover or encase the wood or metal rail in a soil-proof material or in one from which stains, dirt and marks are easily removed.
  • a cover, coat or case may be a plastic, as suggested at 48, in Fig. 6.
  • the lower rail I4 may be composed of plastic material.
  • the upper rail 49 where exposed, as shown in Fig. 5, may constitute a tilt rail for tilting .the slats forwardly orrearwardly by any means.
  • the bottom rail and the operating wires or cables may be housed to slide in Window or vdoor jambs, and-thus be invisible; also the tilting mechanism.heretofore referred to, may likewise behoused and only the operating member extenddin. convenient access to or reach of the operator.
  • a Venetian blind including a plurality of slats, ladder tapes upon which said slats are supported and a bottom rail; the combination of a casing, a horizontal shaft journaled in said casing and provided with cylindrical means to support said tapes, a gear on one end of said shaft, a transversely disposed shaft journaled in and extending beyond said casing and provided with a Worm in engagement With said gear, a pulley on the end of said transverse shaft, exible means carried by said transverse shaft-pulley to tilt said slats, a single spirally grooved conoidal body journaled in said casing and provided With a cylindrical groove, exible means connecting said rail to said cylindrical groove, a spring fixed at one end to and in said casing, a block at the other end of said spring, a block xed in said casing, a line tensioned by said spring and threaded over said blocks, said line having one end i'lXed to and in said casing and
  • a Venetian blind including a plurality of slats; ladder tapes upon which said slats are supported and a bottom rail; the combination of a casing, a shaft journaled in said casing, spaced cylindrical members xed on said shaft to support said tapes, a single conoidal body journaled in said casing having a cyilndrical portion provided with a groove and a continuous spiral groove, pulleys in said casing in line with said tapes and with the cylindrical groove of said body, flexible means threading over said pulleys and connecting said rail to opposite sides of said groove on the cylindrical portion, means to cause said conoidal body to oscillate and to alternately Wind said flexible means on and 01T said cylindrical groove as the blind is raised and lowered, comprising a line attached to said body in said spiral groove, a horizontal spring, anchored at one end toand in said casing and at the other end connected to said line to maintain said line in tension,.said spiral groove automatically adjusting the tension 0f said spring to

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Blinds (AREA)

Description

May 13, 1947. R. CUSUMANO 2,420,301
VENETIAN BLIND Filed Nov. 20, 1944 2 Sheets-Sheet 2 INVENToR. Rudow/1 Cusumano .BY Mgg m A T7' ORNE Y Patented May 13, 1947 UNITED STATES PATENT oFElcE VENETIAN BLIND Rudolph Cusumano, Los Angeles, Calif.
Application November 20, 1944, Serial No. 564,231
4 Claims. (Cl. 160-34) My invention relates to Venetian blinds of the type well known as including a plurality of spaced slats supported in spaced relation by ladder tapes, the slats being raised and lowered by cables or cords. In all such blinds, the slats are held in any raised or lowered position by fastening the raising or lowering cord or cable on a suitable anchoring device usually attached to a window or door jamb or other structural part of a building. The objections to this necessity of manipulation are many, and chiey the time and trouble involved in loosening the raising and lowering cord or cable from its anchorage, operating the cord to eiect the elevation or descent of the slats and the wear and tear on the operating medium.
The objects of the present invention are to provide a Venetian blind in which the slats thereof maybe raised and lowered manually, Without the use of cords or cables and in which the slats may be retained in any adjusted position, Without locks or supplemental anchorage.
Another object of the invention is to provide in a Venetian blind, a means for counter-balancing the Weight of the blind in any raised or lowered position.
Another object of the invention is to provide in a Venetian blind a spring mechanism, providing tension by which the blind is held counterbalanced in any position between the limits of its movement and an adjustment by which such tension in the spring may be varied according to the weight of the blind.
My invention also has for its objects to pro'- vide such means that are positive in operation, convenient in use, easily installed in a Working position and easily disconnected therefrom, economical of manufacture, relatively simple, and of general superiority and serviceability.
The invention also comprises novel details of construction and novel combinations and arrangement of parts, which will more fully appear in the course of the following description. However, the drawings merely show, and the following description merely describes embodiments of the invention which are given by way of illustration or example only.
In the drawings, like reference numerals designate similar parts in the several views.
Fig. l is an elevational view, partly in section of a device embodying my invention.
Fig. 2 is a top plan view.
Fig. 3 is an enlarged section on line 3 3 of Fig. 2.
Fig. 4 is a top plan View of a modied form of my invention.
Fig. 5 is a fragmentary elevational view showing the suspension means for the slats and Fig. 6 is a section on line 6 6 of Fig. 5.
In a general sense, the invention comprises a Venetian blind of usual structure, suitably suspended, as from the upper jamb of a door or a window or other opening, or from a housing that may be attached to the frame Work of a window or door. The slats are operable to raised or lowered position by rotatable or oscillatable means, to Which cables or cords are connected, and the rotatable means is under tension and furnished with means by which the tension may be regulated and adjusted in accordance With the Weight of the blind in any position oi its movement, so that the blind, when manually raised or lowered, will remain in such position without further aid.
In a specific sense, the invention is shown as comprising a casing or enclosure I0, open at the tcp. The enclosure which may be a structural part of a building, is provided with bottom openings, around which are positioned guide members or eyes II, secured to the floor I2 of the enclosure I0. Wire ropes or cables I3, secured to the bottom rail I4, Fig. 6, of the blind I5, pass through said guide members or eyes II and over pulleys I6, hung from the under side of cross bars I1, connecting the top of the sides of the enclosure. The ends of said wire ropes or cables I3, are secured to opposite sides of and in a cylindrical groove I8, that forms a part of a cone member I9, hereinafter more specially referred to. The Wire ropes or cables I3, pass through openings in the slats I2 0, of the blind I5, which comprises said slatsv 20, ladder tapes ZI, for supporting said slats 20 in spaced relation, and a bottom rail I4, to which the wire ropes or cables I 3 are attached in any convenient manner, whereby the rail I4 and consequently a portion of the slats 20 or all of them are held in raised or lowered position by the means detailed later herein. The tapes 2I, supporting the slats 20, are secured at the top to cylindrical carriers or elements 23, that are mounted or fixed upon a common shaft 24, at spaced points thereon. The shaft 24 operates in-bearings 25, and one end thereof is provided with a gear 25, in mesh with a worm 21, on a shaft 28, in and extending beyond the enclosure or housing I0. The extended end of said shaft 28, mounts a grooved pulley 29, or other means, over which extends preferably an endless line, or rope 30, which is operable by pulling on one or the other of the parallel portions thereof to tilt the slats 20 in one direction or another. The aforenamed cone member I9, which is journaled in a member I9 and in a bearing plate I9 is provided with a continuous spiral groove 3|, more clearly shown in Fig. 3, in which is arranged to thread an end portion of a block line 32, which is under tension, as of a spring 33. In the form shown in Fig. 1, the other end of the block line 32, is anchored as -suggestedat 34 and the intermediate portion of'the line or cable 32 passes over a pulley block connected to said spring 33 and pulley block` 36 ixedly secured in said housing I0 in spaced relation to said block- 35. In this manner, theejtielri;A
sion of the spring is reilected in the cone member I9 through the block line or cable 32;'-th'e cone member being rotated duringY themanual tionA oispeed inthe., elevation of 'the blind. aszit approaches its'top or uppermost position. Inr
drawing downthe blind, the blqclgline 32 rotates the'vconemember I9 in thelopposite directiQn,.as itunwindsrfrom the groovesSI, thereby .placing the4 sprite 33t-under. a progressively decreasing tension,` which, however, is at.V all timesproportionedv vequally `to the. Weight f @the blind. ,Thus
the Vblindmay be raised orlowered Yas desired, withl small, effort.v and, maintainedin Vadjusted position without any supplemental means..
The tensionlof the-spring .33, when .thesystem iscOnnected as eigplained, may. be, adjustedby anyy means; asa turnbllckle 3.1. Itis believed,y
Cl?. witfhllt further illustratisn. ,that .the Sim- Plfpflllsysof sbseres and 35....may .be mumerooved.OrothGrWSQQmDQunded.to ,exert greater .force'or.allelhqlal Qf motion, of the .block lije? and the. CQne-bedrl 9...,
The lor in, Fig- 4, differsfmmitheierm here tofo'rfe described, in theemplQyment of. ator7 sional spring 40,' contained .arid hQllSQd in the.. usual Ima'nneroa.conventionalspring typeloller L 511129211. .which are. @flanged to, Wind the vWire rolg'iesfofrA cablesconneoted with., the-bottom rail I 4;,"U,pon `'the shaft; is fixedlymounted an cone member")'If,v provided with an exterior continuousspiralgroove `,4Ii,.in and rfrom whichis adaptedto ivindorunwind a. cablev or, cord or other iieiiibleA means', .41',- that is tpaidout lfrom.o r wound upori'said`ro1l,er4I,.against `or by thetension of thE .SPIing All, The result attained by zthis form isi,practicallyidentical with the resultI attained by the,deviceshowninFigs 1 and 2.` Invthis latter form where `the wires orv cables .carrying the bottom rail .I4 aremounted .to v,wind on and oithedru'ms 4.4, itis, possible tovmount or at-` tach ythese Carrying wires to lthe outside ends-pt` bothrthe ,top and bottom. rails, as illustrated in Fig., 15a'lndthis arrangement leaves ,the slats rofr of ythe, lo1in:l fre ertobe removed .from the ladders ,Y or tapelsyzl. Where thetop and bottom rail :of alle',blindy .are exposed, .andtlie'-l bottom,frail2 is,im
` means A.co1'ine-cted,-viith Asaid rail vto opposite sides used to lift the blind, as it must be in the present instance, it is desirable to coat, cover or encase the wood or metal rail in a soil-proof material or in one from which stains, dirt and marks are easily removed. Such a cover, coat or case may be a plastic, as suggested at 48, in Fig. 6. Obviously, the lower rail I4 may be composed of plastic material. The upper rail 49, where exposed, as shown in Fig. 5, may constitute a tilt rail for tilting .the slats forwardly orrearwardly by any means.
It is believed clear without further illustration, lthat in this latter form of the invention, shown n,-I}`i g, 4, the bottom rail and the operating wires or cables may be housed to slide in Window or vdoor jambs, and-thus be invisible; also the tilting mechanism.heretofore referred to, may likewise behoused and only the operating member extenddin. convenient access to or reach of the operator.
Whilel :have .illustrated .and described what I nowfregardas the preferred:embodimentfof my irrvszintion,` theQnstruQtimis. 0I course. Subject., tomodieatonswithout.departing from the spirit.
assistere of my. invention.. I. therefore do not wishto ,restrictmyself.tothe particular form, .0.,f
coristrlitinillustrated.- and.; describe@ but d@-` sire to.availfmyselffof allymodifications that. may fell, .Withintlie Scene .of the appended-,Claims- Haring.. thus des-Qribemmy invention., what I. desire .to Secure. byLettsrsPatent lof. the United.
casing; a shaft journaled in saidcasing, spacedA cylindrical members iixed Von said shaft Ato .supp01*@ 4Said tapes: a Gone-shaped msm-ber rotatably mounted in saidecasing yand -having acylindrical el'OQye. and a, continuous, spiral groove; flexible.
of said cylindrical groove; a ,spring fastened yat oneendftosaidgcasing; andacable connected to andtensioned .by said spring, said cabley connected toA and operable fin, the ,spiral groove, of said member to regulate the tensionfofsaid spring in agzcorrla-nc with the .weight of -the lblindand means :to 1oscillate said shaft to cause the cylindricalmembers thereon to vary the angle .,ofsaid 2.-,*In la,I Venetian .blind including a plurality of slats; ladderV tapes upon-` which said.slats.ar,e supported and a bottom rail; Vthel.combination of a. cas,ing, yashaftjournaled in'l said casing and prollded Wthcylindricalmembers to supportcsaid tapes, la kgeaiyoriysaid (shaft, lmeanslengaging said geararld(manually` operable to oscillate said shaftand :tilt said'slats, Vafspirally groovedconefshaped body journaledgcentrallyiinsaidasing having a cylindrical. portionprovided with agroove, exiblefmeans connecting saidrail; andicylindrical groove, meansA .to cause said :bodyto .oscillate vas thefblind ,'is Araised .and .'loweredi'to wind said Iilexiblemeans onzandoff the spiralgrooye: including asprngxed ateone :endfto and inisaid casing, ablocli at the other fend orsaid'springfa sheave block xed in said casing, a line-tensionedfby said-,spring and threaded; over ,said blocks said line having one endxed V,to=..and;in saidcasing and-the other ,end anchored t0-said body insaid spiral groove, thereby tto goausefsaid .line to wind from and into said spiral.groove` rastheblind 'is raisedor .lowered land Vto .regulate the line.pul1
on said spring in accordance with the weightoi the blind, and means to adjust the tension of said spring.
3. In a Venetian blind including a plurality of slats, ladder tapes upon which said slats are supported and a bottom rail; the combination of a casing, a horizontal shaft journaled in said casing and provided with cylindrical means to support said tapes, a gear on one end of said shaft, a transversely disposed shaft journaled in and extending beyond said casing and provided with a Worm in engagement With said gear, a pulley on the end of said transverse shaft, exible means carried by said transverse shaft-pulley to tilt said slats, a single spirally grooved conoidal body journaled in said casing and provided With a cylindrical groove, exible means connecting said rail to said cylindrical groove, a spring fixed at one end to and in said casing, a block at the other end of said spring, a block xed in said casing, a line tensioned by said spring and threaded over said blocks, said line having one end i'lXed to and in said casing and the other end anchored to and in said spiral groove, thereby to regulate the line pull of said spring as the blind is raised and lowered, and an adjustment means in said casing for regulating the tension of said spring.
4. In a Venetian blind including a plurality of slats; ladder tapes upon which said slats are supported and a bottom rail; the combination of a casing, a shaft journaled in said casing, spaced cylindrical members xed on said shaft to support said tapes, a single conoidal body journaled in said casing having a cyilndrical portion provided with a groove and a continuous spiral groove, pulleys in said casing in line with said tapes and with the cylindrical groove of said body, flexible means threading over said pulleys and connecting said rail to opposite sides of said groove on the cylindrical portion, means to cause said conoidal body to oscillate and to alternately Wind said flexible means on and 01T said cylindrical groove as the blind is raised and lowered, comprising a line attached to said body in said spiral groove, a horizontal spring, anchored at one end toand in said casing and at the other end connected to said line to maintain said line in tension,.said spiral groove automatically adjusting the tension 0f said spring to the weight of the blind, means to regulate the tension of said spring, and independent manual means for operating said shaft to adjust the angle of said slats independently of said exible means.
RUDOLPH CUSUMANO.
REFERENCES CITED The following references are of record in the le of this patent:
UNITED STATES PATENTS Number Name Date 13,251 Bixler July 17, 1855 2,328,305 De Stefano Aug. 31, 1943 FOREIGN PATENTS Number Country Date 10,177 Great Britain July 13, 1888
US564231A 1944-11-20 1944-11-20 Venetian blind Expired - Lifetime US2420301A (en)

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Cited By (60)

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US2687769A (en) * 1952-05-09 1954-08-31 Seymour P Gershuny Venetian blind
US5133399A (en) * 1990-12-17 1992-07-28 Hiller Jeffrey H Apparatus by which horizontal and vertical blinds, pleated shades, drapes and the like may be balanced for "no load" operation
US5280818A (en) * 1991-06-21 1994-01-25 Sonne Regen Ag Pulling device, preferably to pull a blind of a window blind assembly inwardly and outwardly, and an assembly incorporating such device
EP0677638A1 (en) * 1994-04-06 1995-10-18 Newell Operating Company Cordless, balanced window covering
US5482100A (en) * 1994-04-06 1996-01-09 Newell Operating Company Cordless, balanced venetian blind or shade with consistent variable force spring motor
US5706876A (en) * 1996-07-29 1998-01-13 Lysyj; Phillip A. Cordless, roller bar cellular shade
US5778956A (en) * 1997-02-18 1998-07-14 Judkins; Ren Venetian blinds with lateral tilt
US5799715A (en) * 1997-12-03 1998-09-01 Biro; Michael Julius Liftable window covering with multiple lifting cords and a single pull cord
US5813447A (en) * 1996-07-29 1998-09-29 Lysyj; Phillip A. Cordless cellular and pleated shade
US6135189A (en) * 1997-07-28 2000-10-24 Weinreich; Steve Mechanism for constant balance
US6283192B1 (en) 1997-11-04 2001-09-04 Andrew J. Toti Flat spring drive system and window cover
US6289965B1 (en) 2000-02-11 2001-09-18 Newell Operating Company Take-up drum for a cordless shade counterbalance
US6293329B1 (en) 1997-11-04 2001-09-25 Andrew J. Toti Coil spring drive system and window cover
US6330899B1 (en) 1994-04-06 2001-12-18 Newell Window Furnishings. Inc. Cordless balanced window covering
US6412537B1 (en) 1999-01-12 2002-07-02 Newell Operating Company Bottom rail weight and balancing system
US20020174961A1 (en) * 1999-03-23 2002-11-28 Hunter Douglas Inc. Modular transport system for coverings for architectural openings
US6571853B1 (en) 2000-07-06 2003-06-03 Newell Window Furnishings, Inc. Cordless blind having variable resistance to movement
US20030104536A1 (en) * 1998-10-07 2003-06-05 Genentech, Inc. Secreted and transmembrane polypeptides and nucleic acids encoding the same
US20030111191A1 (en) * 2001-12-14 2003-06-19 Zazu Ciuca One way brake for a cordless blind
US6622769B2 (en) 2000-04-14 2003-09-23 Ren Judkins Lift system having length adjustment for window blinds
US6644375B2 (en) 2001-01-09 2003-11-11 Newell Window Furnishings Cordless blind brake
US6644372B2 (en) 2001-03-22 2003-11-11 Ren Judkins Cordless blind
US6644373B2 (en) 2001-11-08 2003-11-11 Newell Window Furnishings, Inc. Cordless blind
US6648050B1 (en) 1997-11-04 2003-11-18 Andrew J. Toti Spring drive system and window cover
US6675861B2 (en) 2001-12-14 2004-01-13 Newell Window Furnishings, Inc. Brake for a cordless blind
US20040016518A1 (en) * 2002-05-17 2004-01-29 Hunter Douglas Inc. Balanced tilt mechanism for a covering for an architectural opening
US6684930B2 (en) 2001-12-14 2004-02-03 Newell Window Furnishings, Inc. Brake for a cordless blind
US6725897B2 (en) 2000-08-22 2004-04-27 Newell Window Furnishings, Inc. Variable friction device for a cordless blind
US20040177933A1 (en) * 2000-11-28 2004-09-16 Newell Window Furnishings, Inc. Cordless blind
US20040182526A1 (en) * 2003-03-20 2004-09-23 Springs Window Fashions Lp Cordless blinds
US20040182522A1 (en) * 2003-03-20 2004-09-23 Springs Window Fashions Lp Cordless blinds
US20050109471A1 (en) * 2003-10-10 2005-05-26 Springs Window Fashions Lp Window covering lifting system and method
US7025107B2 (en) 2001-07-31 2006-04-11 Newell Window Furnishings, Inc. One-way tensioning mechanism for cordless blind
US20060096720A1 (en) * 2004-10-27 2006-05-11 Overhead Door Corporation Side mount counterbalance system for upward acting door
US20060258635A1 (en) * 2003-02-05 2006-11-16 Photobiochem N.V. Use of a porphyrin compound for the treatment of skin fungi
US20070151675A1 (en) * 2005-11-02 2007-07-05 Ching Feng Home Fashions Co., Ltd. Blind body collecting-expanding control device for window blinds
US20070199663A1 (en) * 2006-02-27 2007-08-30 Yang Nelson T Two-way elevation curtain structure
US20080203211A1 (en) * 2007-02-22 2008-08-28 Tait Towers, Inc. Portable curtain retraction device and system
US20080210390A1 (en) * 2007-01-13 2008-09-04 Hunter Douglas Industries Bv Controlling a position of a flexible covering
US20090020239A1 (en) * 2007-07-19 2009-01-22 Fu-Lai Yu Self-raising window covering
US20100319860A1 (en) * 2009-06-23 2010-12-23 Newell Window Furnishings, Inc. Spring motor and window covering
US20120061031A1 (en) * 2009-05-22 2012-03-15 Xuezhong Zhang Hollow built-in window blind
US20140020854A1 (en) * 2012-07-18 2014-01-23 Hsien-Te Huang Unlocking assembly for feedback window curtain set
US8739853B2 (en) 2001-03-22 2014-06-03 Ren Judkins Cordless blind and operator device
US9121220B2 (en) 2009-05-22 2015-09-01 Shanghai Kingshine Plastic Manufacture Co., Ltd. Hollow built-in blind
US9121221B2 (en) * 2013-05-28 2015-09-01 Li-Ming Cheng Cord-winding assembly of a window blind
US20160082529A1 (en) * 2014-09-22 2016-03-24 Sd3, Llc Blade elevation mechanisms and anti-backdrive mechanisms for table saws
US9309716B2 (en) * 2014-08-22 2016-04-12 Nien Made Enterprise Co., Ltd. Transmission mechanism of window covering
US9316050B2 (en) * 2014-06-15 2016-04-19 Ching Feng Home Fashions Co., Ltd. Cordless curtain assembly
US9957750B2 (en) 2016-06-09 2018-05-01 Whole Space Industries Ltd Window covering positional adjustment apparatus
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US10415306B2 (en) 2017-07-05 2019-09-17 Whole Space Industries Ltd Window covering and stability mechanism for the same
US10550635B2 (en) 2017-08-09 2020-02-04 Whole Space Industries Ltd Window covering control apparatus
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US11149489B2 (en) * 2019-03-05 2021-10-19 Hunter Douglas Inc. Transmission for an architectural-structure covering
USD935221S1 (en) 2019-06-26 2021-11-09 Whole Space Industries Ltd Bottom rail for a window covering
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US12000208B2 (en) 2020-01-31 2024-06-04 Pella Corporation Integrated pleated screen assembly

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US10221619B2 (en) 2015-01-21 2019-03-05 Nien Made Enterprise Co., Ltd. Lifting device of cordless covering
US9957750B2 (en) 2016-06-09 2018-05-01 Whole Space Industries Ltd Window covering positional adjustment apparatus
US10329836B2 (en) 2016-06-09 2019-06-25 Whole Space Industries Ltd Window covering positional adjustment apparatus
US10415306B2 (en) 2017-07-05 2019-09-17 Whole Space Industries Ltd Window covering and stability mechanism for the same
US10550635B2 (en) 2017-08-09 2020-02-04 Whole Space Industries Ltd Window covering control apparatus
US10676988B2 (en) 2017-09-20 2020-06-09 Whole Space Industries Ltd. Window covering control apparatus
US11643864B2 (en) 2018-01-23 2023-05-09 Pella Corporation Screen edge retention and screen rethreading features for a hidden screen assembly and a fenestration assembly
US11643865B2 (en) 2018-01-23 2023-05-09 Pella Corporation Roller assembly and screen end retention features for a hidden screen assembly and a fenestration assembly
US11230881B2 (en) * 2018-09-26 2022-01-25 Nien Made Enterprise Co., Ltd. Block and tackle window blind
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USD935221S1 (en) 2019-06-26 2021-11-09 Whole Space Industries Ltd Bottom rail for a window covering
US12000208B2 (en) 2020-01-31 2024-06-04 Pella Corporation Integrated pleated screen assembly
US20230075977A1 (en) * 2020-05-11 2023-03-09 Marc Queralt Monso Device for rolling and unrolling roll-up blinds and similar

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