US2618329A - Venetian blind construction - Google Patents

Venetian blind construction Download PDF

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Publication number
US2618329A
US2618329A US780653A US78065347A US2618329A US 2618329 A US2618329 A US 2618329A US 780653 A US780653 A US 780653A US 78065347 A US78065347 A US 78065347A US 2618329 A US2618329 A US 2618329A
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United States
Prior art keywords
bar
channel
cover
tilt
blind
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Expired - Lifetime
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US780653A
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English (en)
Inventor
Nelson Harry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LORENTZEN HARDWARE Manufacturing CORP
LORENTZEN HARDWARE MF'G CORP
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LORENTZEN HARDWARE Manufacturing CORP
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Priority to US780653A priority Critical patent/US2618329A/en
Priority to DEL3740A priority patent/DE852608C/de
Application granted granted Critical
Publication of US2618329A publication Critical patent/US2618329A/en
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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
    • E06B9/38—Other details
    • E06B9/388—Details of bottom or upper slats or their attachment

Definitions

  • FIG I BY flea M4 2; l wn M.
  • This invention relates to Venetian blinds, the invention including a new and improved form of bottom bar, tilt bar and head bar for such blinds.
  • Venetian blinds are provided with a bottom bar extending for the width of the blind and to which the lower ends of the ladder tapes, and usually the lift cords, are secured. This bar is thicker and heavier than the intermediate blind slats and in the past has usually been formed of wood even though the. intermediate slats are often formed of steel. .
  • Many Venetian blinds are also provided with substantially solid wooden head bars and tilt bars, these bars often approximating in overall dimensions the bottom bar.
  • the bottom bar, tilt bar and head bar are all formed of generally similar assemblies of rolled and stamped sheet metal parts, consisting principally of a channel-shaped body and a resilient transversely-arched sheet metal cover for the body, preferably formed of a metal intermediate blind slat.
  • the bar body is preferably one which may serve equally well in a head bar, tilt bar or bottom bar.
  • auxiliary fittings such as anchors for the ends of the ladder tapes and lift cords and end fittings for the body, complete the assembly of bottom bar, head bar or tilt bar.
  • the individual parts of the bar in each instance are held in assembled relation by the interfitting of the parts, special fastening or welding of the parts of each assembly being unnecessary.
  • Certain of the fittings are useful in more than one of the thre bars. I
  • An object of the present invention is to provide a rigid, durable, easily-assembled bottom bar, tilt bar and head bar for a Venetian blind.
  • Another object is to provide a Venetian blind bottom bar, head bar and tilt bar that may be fabricated economically of rolled and stamped sheet metal parts.
  • a further object of the invention is to provide an improved channel-shaped body assembly suitable for use in a Venetian blind bottom bar, head bar or tilt bar.
  • a still further object is to generally improve Venetian blind bottom bars, head bars and tilt bars.
  • Fig. 1 is a front elevation of a Venetian blind having a bottom bar, head bar andtilt bar in accordance with the preferred form of the present invention.
  • Fig. 2 i an end elevation of the blind shown in Fig. 1, looking from the right of Fig. 1.
  • Fig. 3 is a cross section of the head bar and tilt bar taken on the line 3-3 of Fig. 1.
  • Fig. 4 is a fragmentary longitudinal vertical section of the blind, taken on the line 4-4 of Fig. 2.
  • Fig. 5 is a cross section of the bottom bar taken on the line 55 of Fig. 1.
  • Fig. 6 is a fragmentary perspective view of an end portion of the bottom bar.
  • Fig. '7 is a fragmentary perspective view of a lower corner of the blind, including one end of the bottom bar, the end fitting of the bar being shown 'in exploded relation to the bar.
  • Fig. 8 is a perspective view of an alternative end fitting for the bottom bar, which may also be used as an end fitting for the tilt bar.
  • Fig. 9 is an elevation of the pin shown in the end fitting of Fig. 8.
  • Fig. 10 is a perspective view of the filter-engag ing end of the tilt bar, the filter-engaging end fitting being shown in exploded relation to the tilt bar.
  • Fig. 11 is a perspective view of the underside of a ladder tape and lift cord anchor for the bottom bar of a two-lift-cord blind.
  • Fig. 12 is a perspective view of the underside of a ladder tape anchor and cord pulley for incorporation in the bottom bar of a four-lift-cord Venetian blind, this fitting being also usable as a cord-pulley in the head bar of the blind. shown.
  • Fig. 13 is a perspective view of a ladder tape anchor for the tilt bar. 3 H
  • the Venetian blind there shown has a head bar 20 by which the, blind'is supported adjacent a wall openin by suitable installation brackets, not here shown, such as shown in my U.'. S. Patent No. 2,281,043.
  • the tilt bar 24 is rotatably supported, in aposition parallel to and a short distance below the head bar, by a tilter mechanism 2
  • may be of the type shown in Lorentzen U. S. Patent No. 2,228,623 issued December 31, 1940.
  • the cord lock and bracket fitting 22 may be of the type shown in Lorentzen U. S. Patent No. 2,120,284 issued June 14,1938.
  • a pair of lift cords 3.1, 31 are reeved in the usual manner through the head bar and pass through slots provided in the'tilt bar and the intermediate slats, the ends of these lift cords being anchored within the bottom bar.
  • the intermediate slats 26 are formed of thin, resilient, transverselyarched sheet metal strips.
  • a bhannel 28 is proii ded which is -'-'of uniform cross-section'al shape throughont its length.
  • This channel has a flat base 29 and generally parallel sides 239, 311 which terminate in inwardly-turned up'wardly-l inclined longitudinal edges 3l,- 3l'.
  • 'Th'e base-29- of the chahnel fiil is folded-upwardly into-a pair of tight folds 32, 32 which extend-between and-above the longitudinal-edges" 3 l 31 and are' equally-spaced irbmfthe longitudinal center line 'of the -z'zhan nel.
  • folds 32532 form longitudinal'ribs that-serve to strengthen the channel materially against beiidir i'g and 'serve other purposes to be hereinafter-explained.
  • a metal obverse is pr'o vided for the channel '28.
  • Thiscover resilient'and-normally lightly arched transversely, being formed of the slat 'stock-nsed fol the intermediate slats of the I bl-ind.
  • the enter? 35 preferably formed identical -tothe intermediate slats 26 a11dinay-be the lowermostintermediate slat of the blind.
  • the bottom bar 21 is -provided -with' necessary fittings tor cooperation -Witl'-I the 3 lift -cords" 3 1 3 I and th'e adder tapes' 25, as well as fittings fol 'clb si-fig the ends of the Channel 2 8-and retaining the cover in position.
  • V Anchors-3 nowadays
  • the central portion 40-of anchor 39 may also" be provided with two fingers 44 and 45 stamped therefrom and extending below and generally 1 parallel to the central portion 40 of the anchor.
  • the finger 44 projects lengthwise of the central portion-4cof the anchor and provides a projection about which a bight 48 of the lift cord 31 I may be passed.
  • the finger 45 lies somewhat closer against the central portion 44 of the anchor 39 so that the end of the lift cord 31 may be en- I gaged beneath this finger, the latter finger frictionally engaging the cord so as to retain the bi'ght 46 about thefinger 44.
  • the flat central portion 4flnfutheanchor 39 is of 'suitablewidth so that-when positioned within the channel 28 it overlies :the central portion.
  • Thezends :of: the channel 28 are closed-by an end fitting 52, this fitting being formed bf stampedzsheet metal: and having the general configurationIshown-in Figs.l5, 6, 7-anda8.
  • the endzfitting S-L hasa'fiat'end wall-54 of suitable shape (to extend. completelyover the endof the channel; the side extremitiesof the wall 5'4 lying outside-of. and against the end sur'faces of the channel sides 30, 30.
  • Acurved"inwardly-projecting fiangei 55 along. the top .:of the. end wall 54 fits 'between the longitudinal edges 3
  • JIhe'end'fitting 52 is also provided with a-centfal portion 57 projecting from the bottom edge of .the fiatxend wall 54. and between the flanges 516;; 15.6. :Th-is-tcentral portion extends horizontally so 'as-"ton-liealong the-inside or. theubasezflfi of the channel between the folds.32;, '32 and:isr then turned upwardly into a plane parallel withi the wall--54.
  • the wall -54rand thegupturned partof the centralportion ,5] are provided with aligned holes 59 and 69, respectively, the hole 59 within the end wall 54 being somewhat larger than the hole 69 and being surrounded by a circular outwardly-projecting bead 6
  • the central portion 51 is bifurcated by a slot cut lengthwise thereof and extending through the hole 60 and downwardly for a sufficient length of the central portion so that the upturned part of this portion may be resiliently spread.
  • the central portion 51 may be reinforced by a pair of longitudinallyextending beads 64, 64, which extend along the horizontal leg of portion 51, around the corner. and into the vertical leg.
  • the remainder of the blind is first assembled, with the lift cords 31, 31 and the ladder tapes 25, 25 depending from the tilt bar 24.
  • the intermediate slats 26 are positioned within the ladder tapes 25, 25 and the lift cords 31, 31 passed therethrough in the customary fashion.
  • the lowermost slat becomes the cover 35; and after the lift cords 31, 31 have been passed through the slots 36, 36 thereof, they are passed through the anchors 39, 39.
  • the lower ends of the lift cords are then secured to the anchors as already described.
  • the ladder tapes 25, 25 are then engaged with the anchors 39, 39, the ends of the ladder tape branches having previously been folded back upon themselves and stapled to form terminal loops. This is done by crowding the loop onto the long finger and then smoothing it out to telescope it onto the short finger 49 also.
  • cover 35 and anchors 39, 39 are then telescoped within the channel 28, it being necessary to increase slightly the transverse arching of the cover 35 to accomplish this. Such deformation may be accomplished by hand and without the use of tools.
  • the lift cord slots 36, 36 of the cover 35 retain the anchors 39, 39 due to engagement of the flange 42 thereof in these slots.
  • cover 35 When in position within the channel 28, the central portion of cover 35 will lie against the top edges of the folds 32, 32 of the channel while the lateral edges of the cover will lie tightly against the underside of the inturned longitudinal edges 3
  • the cover 35 will be deformed to a slightly greater arching above the anchors 39, 39 due to the interposition of the anchors above the top edges of the folds 32, 32 of the channel. However, this is of such slight degree as to be scarcely apparent.
  • bottom bar 21 is completed by insertion of the end fittings 52, 52. This is accomplished by entering the lower flanges 56, 56 thereof within the channel 28, the upper flange being entered above the cover 35 as the fitting is forced into position.
  • the fitting may be telescoped into position within the channel 28 by a steady pressure or by driving it inwardly with a hammer or other tool, this fitting being forced inwardly until the end wall 54 thereof lies against the squared end of the channel.
  • One of these end fittings may be entered into the channel 28 prior to assembly of the cover 35 therewith.
  • the holes 59 and 69 provided in the end fitting 52 are for the purpose of receiving a pin (see Figs. 8 and 9) for use when hold-down brackets are used in conjunction with the bottom bar.
  • the pin 65 comprises a short cylindrical body having a circumferential groove 66 near one end and a conical tapered portion 61 between the slot 66 and the end of the pin.
  • the pin 65 may be inserted by hand, tapered end first, into the holes 59 and 69.
  • the tapered end 61 engages and slightly spreads the resilient central portion 51 of the end fitting 52 until the groove 66 reaches the wall portion about the hole, at which time the wall portion will snap into and engage within the groove 66 so as to retain the pin 65 in position.
  • the hole 59 and central portion 51 of the end fitting 52 may be omitted if desired.
  • the tilt bar 24 is also comprised of a metal channel and cover which preferably have the same cross-sectional shape as the channel 28 and cover 35, respectively, of the bottom bar 21.
  • a channel 69 is severed from channel stock of indeterminate length, the length of channel 69 being somewhat shorter than the length of the bottom bar 21 as is customary in this type of Venetian blind.
  • transverse slots 19 extending across the base of the channel and between the folds of the channel base, these slots being properly located lengthwise of the channel to adapt them for passage of the lift cords 31, 31.
  • the open side of the channel 69 is provided with a cover 1
  • is provided with transverse slots 36 similar. to the slots 36 of the intermediate slats and of cover 35 of the bottom bar, these slots being likewise properly located longitudinally of the cover for passage of the lift cords 31, 31. Since the tilt bar 24 and channel 69 thereof are somewhat shorter than the bottom bar 21 and the intermediate slats 26, the cover 1
  • Ladder tape anchors 14, 14 are provided within the tilt bar 24 for receiving the top ends of the branches of ladder tapes 25, 25.
  • the anchors 14, 14, best shown in Fig. 13, are generally similar to the anchors 39 within the bottom bar and are assembled with the ladder tapes, the channel 69 and the cover 1
  • the ladder tape-engaging side portions 15, 15 of the anchors 14, 14 may be identical to those of the anchors 39, 39.
  • a central portion 16, however, is somewhat different in that in this instance a transverse slot 11 is provided in each central portion to permit passage of the lift cords 31,31.
  • part of the metal displaced thereby is formed into a collar or annular flange 19 (see Fig. 4) projecting upwardly from the anchor.
  • The'collar. 19 is generally similar to the collar about the.
  • of the anchor 39 but is generally oval to conform with the slot 11.
  • This collar is adapted to be passed through a transverse slot 36 of the cover 1
  • the tilt bar 24 is provided with end fittings chor the lift cord ends and the ladder tape in the tilt bar, two tilt bar ladder tape anchors 74 also being used in the tilt bar.
  • two tilt bar ladder tape anchors 74 also being used in the tilt bar.
  • four of the cord guides 89 are used within the bottom bar, these parts also serving to anchor the bottom ends of the ladder tapes.
  • the cord guides 89 may be formed with ladder tape-engaging fingers, as previously described, although the fin gers have no function when the part is being used within the head bar.
  • the remainder of the fittings of a four-lift-cord blind may be identical with the fittings already described.
  • bottom bar, head bar and tilt bar may be used together, or independently, the other bars of the blind being conventional in construction.
  • the metal bottom bar described may be used with a blind having an enclosed metal head containing a tilt rod.
  • a bar suitable for a head bar, tilt bar or bottom bar comprising a channel-shaped sheet metal body having an open side defined by inwardly-turned longitudinal edges and a longitudinal rib projectingwithin the channel-shaped body from the base thereof and between its inwardly-turned edges, and a resilient sheet metal cover for closing the open side of said channel-shaped body, said cover being engageable under the longitudinal edges of the body and being transversely defiected by the longitudinal rib of the body upon application of the cover, thereby biasing the cover against said longitudinal edges.
  • a bar having a channel-shaped sheet metal body comprising a base and upwardly and inwardly-turned longitudinal edges, the base of the body being folded upwardly upon itself to form a, longitudinal stiffening rib projecting between and above the level of the inwardly-turned edges of the body.
  • a bar having a, channel-shaped sheet metal body comprising a base and upwardly and inwardly-turned longitudinal edges, the base of the body being tightly folded upwardly upon itself to form a pair of vertical longitudinal-extending stiffening ribs projecting between and above the level of the inwardlyturned edges of the body and substantially equidistant from the longitudinal center line thereof.
  • a hollow bar suitable for a tilt bar or bottom bar comprising a metal channel of uniform cross section throughout its length and having upwardly and inwardly turned longitudinal edges defining an open side, the edges being located a substantial distance above the bottom of the channel and extending in an uninterrupted straight line throughout the length of the channel, and a resilient, transversely slightly arched cover extending for the length of said channel and having longitudinal edges engaged beneath the upwardly-and-inwardly-turned edges of the channel, the ends of the branches of the ladder tapes bein entered within said bar between the upwardly-and-inWardly-turned edges of the channel and the portions of the cover lying beneath said edges, and. being anchored within the bar.
  • a hollow metal bar suitable for a tilt bar or bottom bar comprising a channel-shaped member having inwardly-turned, longitudinal edges and a rib projecting upwardly from the base between the longitudinal edges, a resilient cover extending for the length of the channel and having a hole to permit the passage of a lift cord therethrough, and a ladder tape anchor within said bar, the anchor being resiliently engaged between the cover and the rib of the channel-shaped member and having a projecting portion lying within the hole in said cover for preventing displacement of the anchor longitudinally of the bar.
  • a bar suitable for a head bar, tilt bar or bottom bar comprising a, channel-shaped sheet metal body having an open side defined by inwardly-turned longitudinal edges and a pair of longitudinal ribs spaced equidistant flOm the longitudinal center line of the body and projecting within the body from the base thereof and between its inwardlyturned edges, and a resilient sheet metal cover for closing the open side of said channel-shaped body, said cover being engageable under the longitudinal edges of the body and being transversely deflected by the longitudinal ribs of the body upon application of the cover and thereby biasing the cover against said longitudinal edges.
  • a bar suitable for a head bar, tilt bar, or bottom bar comprising a channel-shaped sheet metal body having a base and upwardly-and-inwardly turned longitudinal edges, the base of the body being folded upwardly upon itself to form a longitudinal stiifening rib projecting between and beyond the level of the inwardly-turned edges of the body, and a, resilient sheet metal cover closing the open side of said channel-shaped body, the cover having its side edges engaged beneath the inwardly-turned longitudinal edges of the body and its underside engaged by the stiffening rib.
  • a bar suitable for a head bar, tilt bar, or bottom bar comprising a channel-shaped sheet metal body having a base and upwardly-and-inwardly turned longitudinal edges, the base of the body being folded upwardly upon itself to form a pair of vertical, longitudinal extending stiffening ribs projecting between and beyond the level of the inwardly-turned edges of the body and substantially equidistant from the longitudinal center line thereof, and a resilient sheet metal cover closing the open side of said channel-shaped body, the cover having its side edges engaged beneath the inwardly-turned longitudinal edges of the body and its underside engaged by the stiffening rlbs- HARRY NELSON.
US780653A 1947-10-18 1947-10-18 Venetian blind construction Expired - Lifetime US2618329A (en)

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660238A (en) * 1950-09-18 1953-11-24 Guarantee Specialty Mfg Compan Combination venetian blind tape fastener, cord anchor, pulley support, and cover therefor
US2696879A (en) * 1950-06-17 1954-12-14 Walker Brooks Venetian blind
US2697487A (en) * 1948-06-03 1954-12-21 Lorentzen Hardware Mfg Corp Venetian blind bottom bar
US2745486A (en) * 1951-07-24 1956-05-15 Lorentzen Hardware Mfg Corp Venetian blind construction
US2756816A (en) * 1954-06-22 1956-07-31 Globe Venetian Blind Corp Unitary structures for venetian blinds
US2767786A (en) * 1952-09-11 1956-10-23 Edward C James Venetian blind pull cord and tape fasteners
US2783831A (en) * 1953-01-14 1957-03-05 Kirsch Co Bottom rail construction for venetian blind
US2812022A (en) * 1952-12-23 1957-11-05 Gottfrid C Lawson Venetian blind bottom rail
US2861631A (en) * 1953-08-03 1958-11-25 Lorentzen Hardware Mfg Corp Venetian blind bottom bar organization
WO1996036787A1 (en) * 1995-05-18 1996-11-21 D.C.B. Development, Ltd. Window blind with storage rail
US6443207B1 (en) * 2001-05-30 2002-09-03 Zipshade Industrial (B.V.I.) Corp. Window covering adjustment apparatus and method
US6648049B2 (en) 2000-12-19 2003-11-18 David C. Bryant Cord lock and method for adjusting the length of a window blind assembly
US6681831B1 (en) * 2002-05-17 2004-01-27 Zipshade Industrial (B.V.I.) Corp. Window covering height adjustment apparatus and method using fixed position rotor
US6761202B1 (en) 2002-06-05 2004-07-13 Zipshade Industrial (B.V.I.) Corp. Window covering height adjustment method and apparatus using traveling rotor
US7000521B1 (en) 2002-10-29 2006-02-21 Zipshade Industrial (B.V.I.) Corp. Pleated shade cut-off method and apparatus
US20150218879A1 (en) * 2012-12-06 2015-08-06 Hunter Douglas Inc. End cap for a rail for a window covering
US10036200B2 (en) 2012-12-06 2018-07-31 Hunter Douglas Inc. Covering for an architectural opening
US20220049545A1 (en) * 2020-08-12 2022-02-17 Thuytrinh Pham Power Generating Blind Assembly

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US667567A (en) * 1900-05-14 1901-02-05 Emmett D Page Conduit for electric wires.
US686052A (en) * 1901-08-09 1901-11-05 Joseph Henry Golding Casing or covering for conductors in buildings.
US1668953A (en) * 1926-04-10 1928-05-08 Frederic W Erickson Molding for electric cables
US2100648A (en) * 1935-12-21 1937-11-30 Gottfrid C Lawson Fastener
US2158826A (en) * 1937-12-01 1939-05-16 Hans K Lorentzen Head-bar organization for venetian blinds
US2161414A (en) * 1936-10-17 1939-06-06 United Metal Box Co Inc Venetian blind head bar
US2202293A (en) * 1938-01-26 1940-05-28 Gottfrid C Lawson Venetian blind
US2260726A (en) * 1940-11-25 1941-10-28 Harry S Rosenbaum Lower rail for venetian blinds
US2391904A (en) * 1944-11-22 1946-01-01 Bela B Junkunc Venetian blind rail and tape fastener
US2421505A (en) * 1945-02-13 1947-06-03 Hunter Eng Co Bottom rail assembly for venetian blinds
US2485217A (en) * 1946-04-05 1949-10-18 Reverso Products Co Bottom rail for venetian blinds
US2508742A (en) * 1945-06-16 1950-05-23 Kirsch Co Venetian blind
US2534080A (en) * 1946-07-08 1950-12-12 Carey Mcfall Company Venetian blind mechanism
US2573163A (en) * 1945-12-07 1951-10-30 J & J Tool And Machine Co Venetian blind rail and tape fastener

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US667567A (en) * 1900-05-14 1901-02-05 Emmett D Page Conduit for electric wires.
US686052A (en) * 1901-08-09 1901-11-05 Joseph Henry Golding Casing or covering for conductors in buildings.
US1668953A (en) * 1926-04-10 1928-05-08 Frederic W Erickson Molding for electric cables
US2100648A (en) * 1935-12-21 1937-11-30 Gottfrid C Lawson Fastener
US2161414A (en) * 1936-10-17 1939-06-06 United Metal Box Co Inc Venetian blind head bar
US2158826A (en) * 1937-12-01 1939-05-16 Hans K Lorentzen Head-bar organization for venetian blinds
US2202293A (en) * 1938-01-26 1940-05-28 Gottfrid C Lawson Venetian blind
US2260726A (en) * 1940-11-25 1941-10-28 Harry S Rosenbaum Lower rail for venetian blinds
US2391904A (en) * 1944-11-22 1946-01-01 Bela B Junkunc Venetian blind rail and tape fastener
US2421505A (en) * 1945-02-13 1947-06-03 Hunter Eng Co Bottom rail assembly for venetian blinds
US2508742A (en) * 1945-06-16 1950-05-23 Kirsch Co Venetian blind
US2573163A (en) * 1945-12-07 1951-10-30 J & J Tool And Machine Co Venetian blind rail and tape fastener
US2485217A (en) * 1946-04-05 1949-10-18 Reverso Products Co Bottom rail for venetian blinds
US2534080A (en) * 1946-07-08 1950-12-12 Carey Mcfall Company Venetian blind mechanism

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697487A (en) * 1948-06-03 1954-12-21 Lorentzen Hardware Mfg Corp Venetian blind bottom bar
US2696879A (en) * 1950-06-17 1954-12-14 Walker Brooks Venetian blind
US2660238A (en) * 1950-09-18 1953-11-24 Guarantee Specialty Mfg Compan Combination venetian blind tape fastener, cord anchor, pulley support, and cover therefor
US2745486A (en) * 1951-07-24 1956-05-15 Lorentzen Hardware Mfg Corp Venetian blind construction
US2767786A (en) * 1952-09-11 1956-10-23 Edward C James Venetian blind pull cord and tape fasteners
US2812022A (en) * 1952-12-23 1957-11-05 Gottfrid C Lawson Venetian blind bottom rail
US2783831A (en) * 1953-01-14 1957-03-05 Kirsch Co Bottom rail construction for venetian blind
US2861631A (en) * 1953-08-03 1958-11-25 Lorentzen Hardware Mfg Corp Venetian blind bottom bar organization
US2756816A (en) * 1954-06-22 1956-07-31 Globe Venetian Blind Corp Unitary structures for venetian blinds
WO1996036787A1 (en) * 1995-05-18 1996-11-21 D.C.B. Development, Ltd. Window blind with storage rail
US5655590A (en) * 1995-05-18 1997-08-12 Bryant; David C. Window blind with storage rail
US5765621A (en) * 1995-05-18 1998-06-16 Bryant; David C. Window blind with storage rail
US6648049B2 (en) 2000-12-19 2003-11-18 David C. Bryant Cord lock and method for adjusting the length of a window blind assembly
US6443207B1 (en) * 2001-05-30 2002-09-03 Zipshade Industrial (B.V.I.) Corp. Window covering adjustment apparatus and method
US6681831B1 (en) * 2002-05-17 2004-01-27 Zipshade Industrial (B.V.I.) Corp. Window covering height adjustment apparatus and method using fixed position rotor
US6761202B1 (en) 2002-06-05 2004-07-13 Zipshade Industrial (B.V.I.) Corp. Window covering height adjustment method and apparatus using traveling rotor
US6948545B1 (en) 2002-06-05 2005-09-27 Zipshade Industrial (B.V.I.) Corp. Window covering height adjustment method and apparatus using traveling rotor
US7000521B1 (en) 2002-10-29 2006-02-21 Zipshade Industrial (B.V.I.) Corp. Pleated shade cut-off method and apparatus
US20150218879A1 (en) * 2012-12-06 2015-08-06 Hunter Douglas Inc. End cap for a rail for a window covering
US9759008B2 (en) * 2012-12-06 2017-09-12 Hunter Douglas Inc. End cap for a rail for a window covering
US20170362886A1 (en) * 2012-12-06 2017-12-21 Hunter Douglas, Inc. End cap for a rail for a window covering
US10036200B2 (en) 2012-12-06 2018-07-31 Hunter Douglas Inc. Covering for an architectural opening
US10584528B2 (en) 2012-12-06 2020-03-10 Hunter Douglas Inc. End cap for a rail for a window covering
US11225831B2 (en) 2012-12-06 2022-01-18 Hunter Douglas Inc. Covering for an architectural opening
US20220049545A1 (en) * 2020-08-12 2022-02-17 Thuytrinh Pham Power Generating Blind Assembly

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