US3464161A - Door assembly - Google Patents
Door assembly Download PDFInfo
- Publication number
- US3464161A US3464161A US701141A US3464161DA US3464161A US 3464161 A US3464161 A US 3464161A US 701141 A US701141 A US 701141A US 3464161D A US3464161D A US 3464161DA US 3464161 A US3464161 A US 3464161A
- Authority
- US
- United States
- Prior art keywords
- door
- arm
- arms
- movable
- door assembly
- 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
- 238000013016 damping Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009956 central mechanism Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D15/00—Suspension arrangements for wings
- E05D15/40—Suspension arrangements for wings supported on arms movable in vertical planes
- E05D15/403—Suspension arrangements for wings supported on arms movable in vertical planes with arms fixed on the wing pivoting about an axis outside the wing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/13—Type of wing
- E05Y2900/132—Doors
Definitions
- the present invention relates to a door asembly comprising a door frame and a vertically swingable door and, more particularly, to a door assembly of the type most often used in motor car garages.
- the door proper does at each of its two top corners have a roller journaled for longitudinal movement in a rail of channel-shaped cross-section.
- Tiltable doors of that kind and of similar types are, however, subjected to several disadvantages both as far as the installation work and the operation is concerned. It is necessary for the rails to extend into the room by an amount equal to the height of the door and they must als be slightly inclined inwardly to yield a satisfactory function. It is easily realized that the installation work is comparatively complicated also disregarding the case, which is by no means uncommon, when the available interior head room is substantially greater than the height of the door which makes the means for suspending the rails bulky and disturbing. A further drawback is that doors of that type require a relatively great control power, especially near the closed position. Still another disadvantage is that the manufacturing and installation costs are high, one reason for the level of the last-mentioned costs being that it is highly desirable that the assembling is carried out by mechanics specially trained by the manufacturer.
- the main object of the present invention is to provide a door assembly of the kind above referred to at which said disadvantages and deficiencies are eliminated so that the door is cheap to manufacture, simple to assemble and easy to control.
- Another object of the incention is to provide a door assembly which operates very smoothly and with a minimum of noise.
- a further object of the invention is to provide a door assembly the frame of which supports the entire central mechanism. The principle of design last referred to does, in addition to the simplified assembling work, avoid the need for disturbing mountings secured to the ceiling of the room or, stated in other words, the entire door with its related frame and control arrangement may in prefabricated form be supplied from the factory as a complete and self-contained unit.
- a door frame includes two vertical posts, and a door is swingably supported by the frame between a substantially vertical closed position and a horizontal open position.
- a support arm is rigidly attached to each of said 3,464,161 Patented Sept. 2, 1969 posts and extends inwardly therefrom.
- a pair of movable arms is provided, each of these movable arms being rigidly and non-niovably secured to the upper portion of the garage door and extending substantially perpendicular thereto. These movable arms are also pivotally connected to the inner ends of the support arms.
- a damping means is connected between each support arm and its associated movable arm, the support arms being disposed substantially horizontally.
- the arrangement is such that when the door is in its open position the movable arms are substantially vertically oriented, while in the closed position of the door, the support arms and the movable arms are disposed in parallel relationship to one another with the movable arms positioned above the support arms.
- FIGURE 1 is a partial isometric view of a small garage building equipped iwth a door assembly designed according to one embodiment of the invention, the door being shown in its completely open position:
- FIGURE 2 is an isometric view, drawn to a greater scale, showing the control mechanism at the one side of the door which again is in its open position;
- FIGURE 3 corresponds to FIGURE 2 but illustrates the mechanism when the door is fully closed.
- Reference numeral 1 designates a garage having a vertically swingable door 2 mounted in a frame comprising two vertical posts 3 and 4. To each of said posts there is secured a horizontal support arm 5 extending backwards, i.e., towards the interior of the garage. For rigid fixation of the arm it rests on a triangular bracket 6 welded to the arm and to the post. It is seen from FIG. 1 that the distance between arm 5 and the floor of the garage is considerably greater than the distance between the arm and the top of the door opening. Calculations and practical tests have shown that the former distance should preferably equal 1.5-2.5 times the latter one. It will be appreciated that this location of the two arms if of great importance for the space occupied by the control mechanism and it should be emphasized that this space is considerably less than for prior art doors.
- a movable arm 7 At each side of the door 2 there is a movable arm 7, the one end of which is secured to the door whereas the other end is pivotably connected to the support arm 5.
- arm 7 has a tongue 7a rigidly secured thereto and extending substantially perpendicularly to the longitudinal axis of arm 7. It is connected to a pivot 8.
- a damping device 9 Between arms 5 and 7 there is interconnected a damping device 9.
- device consists of a gas spring, i.e., a piston-cylinder unit filled with gas and adapted so that the sliding movement of the piston can be braked as desired.
- This device does also afford a possibility to vary the magnitude of the force which has to be overpowered for relative movement between the piston and the cylinder.
- At its cylinder end device 9 is pivotably connected to support arm 5 by means of a pivot 10 whereas the free end of the piston rod is in a correesponding manner connected to a pivot 11 in arm 7.
- support arms 5 and pivot arms 7 are as shown on the drawing given a channel-shaped crosssection and are mounted so that in the closed position of the door the open side of the channel is faced downwardly in respect of the pivot arms and upwardly as far as the support arms are concerned. Thanks to this arrangement, when the door is closed, each damping 'cylinder 9 will be located inside a protected space omnilaterally closed excepting the two narrow horizontal slots between the pairs of the opposite flanges of the channel sections.
- a door assembly comprising a door frame including two substantially vertical posts, a door swingably supported by said frame between a substantially vertically closed position and a substantially horizontal open position, the swingable support for said door including a substantially horizontal support arm rigidly secured to each of said posts and extending inwardly therefrom, a pair of movable arms each of which is rigidly and non-movably secured at one end to an upper portion of said door and extending substantially perpendicular to the door, the opposite end of each of said movable arms being swingably connected to the inner end of an associated support arm, so that in the open position of the door, said movable arms are substantially vertically oriented, and in the closed position of the door each of said movable arms is positioned substantially parallel with and above an associated support arm, and damping means connected between each support arm and an associated movable arm.
- each of said support arms and each of said movable arms are of channel-shaped cross-sectional configuration so that each support arm and the associated movable arm defines a protected space within which the associated damping device is disposed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wing Frames And Configurations (AREA)
Description
K. O. JONSSON DOOR ASSEMBLY 2 Sheets-Sheet 1 Filed Jan. 29, 1968 Sept. 2, 1969 K. o. JONSSON DOOR AS S EMBLY 2 Sheets-Sheet 2 Filed Jan. 29, 1968 United States Patent 3,464,161 DOOR ASSEMBLY Karl O. Jonsson, Elvagen 4, Tillberga, Sweden Filed Jan. 29, 1968, Ser. No. 701,141 Claims priority, application Sweden, Jan. 27, 1967, 1,229/ 67 Int. Cl. E05d .15/56, 15/38 US. Cl. 49-197 3 Claims ABSTRACT OF THE DISCLOSURE The present invention relates to a door asembly comprising a door frame and a vertically swingable door and, more particularly, to a door assembly of the type most often used in motor car garages. In one of the most common designs the door proper does at each of its two top corners have a roller journaled for longitudinal movement in a rail of channel-shaped cross-section. It is also general practice to dispose, at each side of the door opening, a two-armed lever pivotally connected to the door frame and having its one end articulated to the movable door, whereas the opposite end is connected to a heavy spring action between the lever and a stationary point on or near the frame. Tiltable doors of that kind and of similar types are, however, subjected to several disadvantages both as far as the installation work and the operation is concerned. It is necessary for the rails to extend into the room by an amount equal to the height of the door and they must als be slightly inclined inwardly to yield a satisfactory function. It is easily realized that the installation work is comparatively complicated also disregarding the case, which is by no means uncommon, when the available interior head room is substantially greater than the height of the door which makes the means for suspending the rails bulky and disturbing. A further drawback is that doors of that type require a relatively great control power, especially near the closed position. Still another disadvantage is that the manufacturing and installation costs are high, one reason for the level of the last-mentioned costs being that it is highly desirable that the assembling is carried out by mechanics specially trained by the manufacturer.
The main object of the present invention is to provide a door assembly of the kind above referred to at which said disadvantages and deficiencies are eliminated so that the door is cheap to manufacture, simple to assemble and easy to control. Another object of the incention is to provide a door assembly which operates very smoothly and with a minimum of noise. A further object of the invention is to provide a door assembly the frame of which supports the entire central mechanism. The principle of design last referred to does, in addition to the simplified assembling work, avoid the need for disturbing mountings secured to the ceiling of the room or, stated in other words, the entire door with its related frame and control arrangement may in prefabricated form be supplied from the factory as a complete and self-contained unit.
Summary of the invention A door frame includes two vertical posts, and a door is swingably supported by the frame between a substantially vertical closed position and a horizontal open position. A support arm is rigidly attached to each of said 3,464,161 Patented Sept. 2, 1969 posts and extends inwardly therefrom. A pair of movable arms is provided, each of these movable arms being rigidly and non-niovably secured to the upper portion of the garage door and extending substantially perpendicular thereto. These movable arms are also pivotally connected to the inner ends of the support arms. A damping means is connected between each support arm and its associated movable arm, the support arms being disposed substantially horizontally. The arrangement is such that when the door is in its open position the movable arms are substantially vertically oriented, while in the closed position of the door, the support arms and the movable arms are disposed in parallel relationship to one another with the movable arms positioned above the support arms.
The invention will now be described in greater detail, reference being made to the accompanying drawing in which:
FIGURE 1 is a partial isometric view of a small garage building equipped iwth a door assembly designed according to one embodiment of the invention, the door being shown in its completely open position:
FIGURE 2 is an isometric view, drawn to a greater scale, showing the control mechanism at the one side of the door which again is in its open position;
FIGURE 3 corresponds to FIGURE 2 but illustrates the mechanism when the door is fully closed.
Reference numeral 1 designates a garage having a vertically swingable door 2 mounted in a frame comprising two vertical posts 3 and 4. To each of said posts there is secured a horizontal support arm 5 extending backwards, i.e., towards the interior of the garage. For rigid fixation of the arm it rests on a triangular bracket 6 welded to the arm and to the post. It is seen from FIG. 1 that the distance between arm 5 and the floor of the garage is considerably greater than the distance between the arm and the top of the door opening. Calculations and practical tests have shown that the former distance should preferably equal 1.5-2.5 times the latter one. It will be appreciated that this location of the two arms if of great importance for the space occupied by the control mechanism and it should be emphasized that this space is considerably less than for prior art doors.
At each side of the door 2 there is a movable arm 7, the one end of which is secured to the door whereas the other end is pivotably connected to the support arm 5. As can be seen from FIGURE 2, that articulation is not direct because arm 7 has a tongue 7a rigidly secured thereto and extending substantially perpendicularly to the longitudinal axis of arm 7. It is connected to a pivot 8. Between arms 5 and 7 there is interconnected a damping device 9. According to the embodiment of the invention here illustrated that device consists of a gas spring, i.e., a piston-cylinder unit filled with gas and adapted so that the sliding movement of the piston can be braked as desired. This device does also afford a possibility to vary the magnitude of the force which has to be overpowered for relative movement between the piston and the cylinder. At its cylinder end device 9 is pivotably connected to support arm 5 by means of a pivot 10 whereas the free end of the piston rod is in a correesponding manner connected to a pivot 11 in arm 7.
The operation of the arrangement above described should be directly understandable. It should, however, be emphasized that thanks to the presence of tongue 7a the gravitational force which, in the open position of door 2, is absorbed by support arms 5 will have its resultant line of action located so far rearwardly that there will appear a force component striving to maintain the door in its open position. That design in combination with the damping devices 9 makes it possible to balance the door so that the net force required for operating it becomes extremely small. A further advantage is that the magnitude of that force remains substantially constant within the entire operational range between the closed and opened positions of the door. In one preferred embodiment of the invention support arms 5 and pivot arms 7 are as shown on the drawing given a channel-shaped crosssection and are mounted so that in the closed position of the door the open side of the channel is faced downwardly in respect of the pivot arms and upwardly as far as the support arms are concerned. Thanks to this arrangement, when the door is closed, each damping 'cylinder 9 will be located inside a protected space omnilaterally closed excepting the two narrow horizontal slots between the pairs of the opposite flanges of the channel sections.
The embodiment here described and shown is only intended to illustrate the general inventive concept which is that all of the control assembly is attached to the door and the door frame and comprises a pivot arm and a support arm, respectively, at at least the one side of the door opening. It should be understood that the positions and mechanical construction of the arms may be altered and that the same is true as far as the damping devices 9 are concerned. In some cases it is suitable to supplement the arrangement with means, for example, leaf springs, disposed between the pivot arm and the support arm and exerting a damping action during the final portion of the closing movement of the door. This does on the one hand make the final phase of the closing cycle softer because a contribution is given to the action of devices 9 and, on the other, the door becomes balanced also in the corresponding position.
What I claim is:
1. A door assembly comprising a door frame including two substantially vertical posts, a door swingably supported by said frame between a substantially vertically closed position and a substantially horizontal open position, the swingable support for said door including a substantially horizontal support arm rigidly secured to each of said posts and extending inwardly therefrom, a pair of movable arms each of which is rigidly and non-movably secured at one end to an upper portion of said door and extending substantially perpendicular to the door, the opposite end of each of said movable arms being swingably connected to the inner end of an associated support arm, so that in the open position of the door, said movable arms are substantially vertically oriented, and in the closed position of the door each of said movable arms is positioned substantially parallel with and above an associated support arm, and damping means connected between each support arm and an associated movable arm.
2. Apparatus are defined in claim 1 wherein each of said support arms and each of said movable arms are of channel-shaped cross-sectional configuration so that each support arm and the associated movable arm defines a protected space within which the associated damping device is disposed.
3. Apparatus as defined in claim 1 wherein said damping device comprises a pneumatic cylinder.
References Cited UNITED STATES PATENTS 2,540,761 2/1951 Sjoboen 49-205 X 2,603,842 7/1952 Robinson 49-206 X 2,729,862 1/1956 Marjarna 49--205 3,261,051 7/ 1966 Priest 16-163 3,303,613 2/1967 Seuntjens 49-131 DENNIS L. TAYLOR, Primary Examiner US. Cl. X.R.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1229/67A SE313000B (en) | 1967-01-27 | 1967-01-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3464161A true US3464161A (en) | 1969-09-02 |
Family
ID=20257822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US701141A Expired - Lifetime US3464161A (en) | 1967-01-27 | 1968-01-29 | Door assembly |
Country Status (2)
Country | Link |
---|---|
US (1) | US3464161A (en) |
SE (1) | SE313000B (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3869168A (en) * | 1973-06-04 | 1975-03-04 | Donald L Matheson | Power gate and lift means |
US3995890A (en) * | 1975-07-07 | 1976-12-07 | Fletcher Robert L | Convertible structure |
US4124018A (en) * | 1976-10-14 | 1978-11-07 | Barry-Wehmiller Company | Solar heat collecting, storing and utilizing apparatus |
US4287833A (en) * | 1979-09-19 | 1981-09-08 | Pullman Incorporated | Auto carrier railway car |
US4464868A (en) * | 1981-05-18 | 1984-08-14 | Howroyd Lawrence H | Building construction |
US4733436A (en) * | 1985-06-17 | 1988-03-29 | Exemplar, Inc. | Door mechanism spring assembly |
US4765026A (en) * | 1985-06-17 | 1988-08-23 | Exemplar, Inc. | Door mechanism spring assembly |
US5384975A (en) * | 1994-03-30 | 1995-01-31 | Yuran; Joseph J. | Overhead door apparatus |
WO1997007712A1 (en) * | 1995-08-30 | 1997-03-06 | Accuride International, Inc. | Braking mechanism for over-top flipper door slide system |
US6061965A (en) * | 1998-08-07 | 2000-05-16 | Schrock; Stanton E. | Door operator with short stroke actuator |
US6883273B2 (en) | 1998-11-10 | 2005-04-26 | Cottonwood Welding & Manufacturing, Inc. | Hydraulically operated overhead door |
US7070176B1 (en) * | 2003-09-26 | 2006-07-04 | Mario Rios | Enclosed spring mechanism for trailer ramp doors |
US20090284112A1 (en) * | 2008-05-13 | 2009-11-19 | Waterloo Industries, Inc. | Storage Enclosure |
US20100252682A1 (en) * | 2009-04-07 | 2010-10-07 | Airbus Operations Gmbh | Fuselage nose door |
US20110185635A1 (en) * | 2010-02-02 | 2011-08-04 | Keller Richard D | Hydraulic cylinder control |
US8104850B2 (en) | 2007-05-30 | 2012-01-31 | Steelcase Inc. | Furniture storage unit |
US8714229B2 (en) * | 2012-05-31 | 2014-05-06 | Crown Industries, Inc. | Hydraulic leveraged overhead door assembly |
US20150204131A1 (en) * | 2014-01-23 | 2015-07-23 | Carl S. Petrat | Airport hangar door |
US11136815B2 (en) * | 2016-10-17 | 2021-10-05 | Sorrel Quarters, Llc | Overhead door frame assembly |
US11428036B1 (en) * | 2020-03-10 | 2022-08-30 | Powerlift Door Consultants, Inc. | Bi-fold overhead door with concealed hydraulic cylinder |
US11549294B1 (en) * | 2020-03-10 | 2023-01-10 | Powerlift Door Consultants, Inc. | Overhead door system with concealed hydraulic cylinder |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6471312B1 (en) * | 2000-03-23 | 2002-10-29 | Steelcase Development Corporation | Binder bin including dampening mechanism for door |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2540761A (en) * | 1947-06-13 | 1951-02-06 | George W Sjoboen | Actuating and counterbalancing mechanism for overhead horizontally hinged closures |
US2603842A (en) * | 1946-10-19 | 1952-07-22 | Crawford Door Co | Tilting door assembly |
US2729862A (en) * | 1951-05-28 | 1956-01-10 | Alvin L Marjama | No-sag overhead retracting doors |
US3261051A (en) * | 1964-04-27 | 1966-07-19 | Priest Harry Dale | Door hardware |
US3303613A (en) * | 1965-02-04 | 1967-02-14 | Ronald P Seuntjens | Farm gate |
-
1967
- 1967-01-27 SE SE1229/67A patent/SE313000B/xx unknown
-
1968
- 1968-01-29 US US701141A patent/US3464161A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2603842A (en) * | 1946-10-19 | 1952-07-22 | Crawford Door Co | Tilting door assembly |
US2540761A (en) * | 1947-06-13 | 1951-02-06 | George W Sjoboen | Actuating and counterbalancing mechanism for overhead horizontally hinged closures |
US2729862A (en) * | 1951-05-28 | 1956-01-10 | Alvin L Marjama | No-sag overhead retracting doors |
US3261051A (en) * | 1964-04-27 | 1966-07-19 | Priest Harry Dale | Door hardware |
US3303613A (en) * | 1965-02-04 | 1967-02-14 | Ronald P Seuntjens | Farm gate |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3869168A (en) * | 1973-06-04 | 1975-03-04 | Donald L Matheson | Power gate and lift means |
US3995890A (en) * | 1975-07-07 | 1976-12-07 | Fletcher Robert L | Convertible structure |
US4124018A (en) * | 1976-10-14 | 1978-11-07 | Barry-Wehmiller Company | Solar heat collecting, storing and utilizing apparatus |
US4287833A (en) * | 1979-09-19 | 1981-09-08 | Pullman Incorporated | Auto carrier railway car |
US4464868A (en) * | 1981-05-18 | 1984-08-14 | Howroyd Lawrence H | Building construction |
US4733436A (en) * | 1985-06-17 | 1988-03-29 | Exemplar, Inc. | Door mechanism spring assembly |
US4765026A (en) * | 1985-06-17 | 1988-08-23 | Exemplar, Inc. | Door mechanism spring assembly |
US5384975A (en) * | 1994-03-30 | 1995-01-31 | Yuran; Joseph J. | Overhead door apparatus |
WO1997007712A1 (en) * | 1995-08-30 | 1997-03-06 | Accuride International, Inc. | Braking mechanism for over-top flipper door slide system |
US5758937A (en) * | 1995-08-30 | 1998-06-02 | Accuride International, Inc. | Braking mechanism for over-top flipper door slide system |
US6061965A (en) * | 1998-08-07 | 2000-05-16 | Schrock; Stanton E. | Door operator with short stroke actuator |
US6883273B2 (en) | 1998-11-10 | 2005-04-26 | Cottonwood Welding & Manufacturing, Inc. | Hydraulically operated overhead door |
US7070176B1 (en) * | 2003-09-26 | 2006-07-04 | Mario Rios | Enclosed spring mechanism for trailer ramp doors |
US8104850B2 (en) | 2007-05-30 | 2012-01-31 | Steelcase Inc. | Furniture storage unit |
US20090284112A1 (en) * | 2008-05-13 | 2009-11-19 | Waterloo Industries, Inc. | Storage Enclosure |
US8215728B2 (en) | 2008-05-13 | 2012-07-10 | Waterloo Industries, Inc. | Storage enclosure |
US20100252682A1 (en) * | 2009-04-07 | 2010-10-07 | Airbus Operations Gmbh | Fuselage nose door |
US8459592B2 (en) * | 2009-04-07 | 2013-06-11 | Airbus Operations Gmbh | Fuselage nose door |
US20110185635A1 (en) * | 2010-02-02 | 2011-08-04 | Keller Richard D | Hydraulic cylinder control |
US8327586B2 (en) | 2010-02-02 | 2012-12-11 | Hi-Fold Door Corporation | Hydraulic cylinder control |
US8800208B2 (en) | 2010-02-02 | 2014-08-12 | Hi-Fold Door Corporation | Hydraulic cylinder control |
US8714229B2 (en) * | 2012-05-31 | 2014-05-06 | Crown Industries, Inc. | Hydraulic leveraged overhead door assembly |
US9273507B2 (en) * | 2014-01-23 | 2016-03-01 | Carl S. Petrat | Airport hangar door |
US20150204131A1 (en) * | 2014-01-23 | 2015-07-23 | Carl S. Petrat | Airport hangar door |
EP3102763A4 (en) * | 2014-01-23 | 2017-11-22 | Petrat, Carl, S. | Airport hangar door |
US11136815B2 (en) * | 2016-10-17 | 2021-10-05 | Sorrel Quarters, Llc | Overhead door frame assembly |
US11655666B2 (en) | 2016-10-17 | 2023-05-23 | Sorrel Quarters, Llc | Overhead door frame assembly |
US11686148B2 (en) | 2016-10-17 | 2023-06-27 | Sorrel Quarters, Llc | Leg for a frame of an overhead door assembly |
US11788342B2 (en) | 2016-10-17 | 2023-10-17 | Sorrel Quarters, Llc | Tripod leg |
US11428036B1 (en) * | 2020-03-10 | 2022-08-30 | Powerlift Door Consultants, Inc. | Bi-fold overhead door with concealed hydraulic cylinder |
US11549294B1 (en) * | 2020-03-10 | 2023-01-10 | Powerlift Door Consultants, Inc. | Overhead door system with concealed hydraulic cylinder |
Also Published As
Publication number | Publication date |
---|---|
SE313000B (en) | 1969-07-28 |
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