US3696568A - Collapsible, extendible double tubular structure - Google Patents
Collapsible, extendible double tubular structure Download PDFInfo
- Publication number
- US3696568A US3696568A US84724A US3696568DA US3696568A US 3696568 A US3696568 A US 3696568A US 84724 A US84724 A US 84724A US 3696568D A US3696568D A US 3696568DA US 3696568 A US3696568 A US 3696568A
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- US
- United States
- Prior art keywords
- sheet
- elongated thin
- thin sheet
- collapsible
- extendible
- 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
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/005—Girders or columns that are rollable, collapsible or otherwise adjustable in length or height
Definitions
- the elongated thin metallic sheet is adaptable to be rolled into a coil about an axis generally transverse to its longitudinal axis in a generally flattened condition.
- two lengthwise rows of slots are provided in the elongated thin metallic sheet that are located near the longitudinal central axis of the sheet and a series of tabs are located on the edges of the sheet that are adapted to be inserted in the slots when the elongated metallic sheet is unrestrained from a flattened condition.
- an extendible element be readily adapted to be tightly rolled in its flat configuration on a drum or the like so that the coiled or rolled element forms a very compact package and this requires that the element possess a high degree of flexibility as it is about to be rolled on the drum and also during the time it is rolled on the drum.
- the extended element possess a high degree of rigidity and be resistant to bending or twisting.
- Prior attempts to obtain this rigidity have included rolling or forming the long narrow sheet into a long thin tube having generally a circular ring shaped cross section. Commonly, tabs and/or slots are provided on the edges of the sheet for assisting in holding the long narrow sheet in its rolled or tubular configuration.
- the extendible element of this invention overcomes these problems associated with prior extendible elements and provides an element that has an improved degree of rigidity and a high moment of inertia from a low weight sheet.
- This invention relates to extendible elements and more particularly to a collapsible coilable extendible element that is pre-stressed to form cylindrical sections when unrestrained from a flattened condition.
- the present invention provides a collapsible, extendible pre-stressed element comprising an elongated thin sheet pre-stressed to have one edge curl about one of its sides about an axis which is substantially parallel to the longitudinal central axis of the sheet to form a first hollow substantially cylindrical section and to have its opposite edge curl about its opposite side about a third axis that is substantially parallel to the longitudinal central axis of the sheet and lies in a substantially common plane with the first axis and the longitudinal central axis to form a second hollow substantially cylindrical section when the thin sheet is unrestrained from a flattened condition.
- the elongated thin sheet is adapted to be rolled in a coil about an axis generally transverse to its longitudinal axis in a generally flattened condition.
- FIG. 1 is a perspective view of the collapsible, extendible element of the present invention as it is being extended;
- FIG. 2 is a front elevational view of the structure illustrated in FIG. 1;
- FIG. 3 is an end view of the extendible element illustrated in FIGS. 1 and 2;
- FIG. 4 is a perspective view of an additional embodiment of the collapsible, extendible element of the invention as it is being extended;
- FIG. 5 is a front elevational view of the structure illustrated in FIG. 4;
- FIG. 6 is an end view of the extendible element illustrated in FIGS. 4 and 5;
- FIG. 8 is a perspective view of an additional embodiment of the collapsible, extendible element of the invention as it is being extended.
- FIG. 9 is an end view of the extendible element illustrated in FIG. 8.
- the collapsible, extendible device of the invention designated generally as 10 comprises an elongated thin metallic sheet 11 that is pre-stressed so that one of its edges which will be referred to as its left edge 12 will curl upward about one side of the sheet about an axis A that is parallel to the longitudinal central axis B of the sheet to form a hollow substantially cylindrical section 13 when the sheet is unrestrained and so that its other edge which will be referred to as its right edge 14 will curl under about the opposite side of the sheet about an axis C that is also parallel to the longitudinal central axis B to form a hollow substantially cylindrical section 15 that is located adjacent to the section 13 when the sheet is not restrained in its flattened condition.
- the axis A and the axis C which are the longitudinal axes of the respective substantially cylindrical sections 13 and 15 lie in substantially the same plane indicated by the line D as the longitudinal axis 8 of the sheet and this permits the extended sheet 11 to resist bending in a direction parallel to the plane D.
- the elongated thin metallic sheet 11 is formed from a resilient material such as spring steel or beryllium copper having sufficient flexibility to enable the sheet to be opened flat without a permanent set so that the energy produced by the pre-stressing is stored by the sheet and is available when the sheet is unrestrained so that its edges will curl in the manner previously described.
- the elongated metallic sheet 11 is adapted to be rolled into a coil about an axis generally transverse to its longitudinal axis in its flattened or restrained condition about a cylindrical drum 16 that is rotatably mounted on a shaft 17 that passes through the long axis of the drum.
- a tube guide designated generally as 18 is located in front of the drum l6 and comprises rollers 19 and 20 rotatably mounted on respective shafts 21 and 22.
- the rollers 19 and 20 have respective dished surfaces 23 and 24 that substantially match the exterior shape of the respective cylindrical sections 13 and 15.
- the rollers 19 and 20 are located opposite each other and they are spaced apart by a sufficient distance so that the distance measured between the respective surfaces 23 and 24 of the rollers is approximately equal to the width of the extended sheet 11 when it has curled to form the two cylindrical sections 13 and 15, so that the guide rollers assist the sheet in assuming its proper configuration as it is being extended.
- the tube guide 18 also comprises a guide wheel 25 that is rotatably mounted on a shaft 26 above the extended portion of the sheet 11 and is adapted to contact the underside of the left edge portion of the sheet as it is being extended so that it guides and assists the sheet in assuming its proper extended configuration.
- the tube guide 18 also comprises a guide wheel 27 that is substantially identical to the guide wheel 25 that is rotatably mounted on a shaft 28 below the extended portion of the sheet 1 l and is adapted to contact the upperside of the right edge portion of the sheet as it is being extended to assist the sheet in assuming its proper extended configuration.
- the shafts 17, 21, 22, 26, and 28 can be mounted on a suitable frame (not shown) so that the respective drum 16, rollers 19 and 20, and guide wheels 25 and 27 are held in their desired relationships.
- the hollow substantially cylindrical section 13 and the hollow substantially cylindrical section 15 have substantially circular cross sections so that the cross section of the entire extended curled sheet 11 is substantially shaped like a figure 8.
- the left portion of the sheet has curled upward and inward so that the left edge of the sheet 12 is in contact with the upper surface of the central portion of the sheet.
- the right portion of the sheet has curled downward and inward so that the right edge of the sheet 14 is in contact with the lower surface of the central portion of the sheet.
- a second form of extendible device is illustrated and generally designated as 29 that comprises an elongated pre-stressed thin metallic sheet 30 that is partially wound in a coil about an axis generally transverse to its longitudinal axis in a flattened condition upon a drum 31 that is rotatably mounted on a shaft 32 in a manner similar to that previously described with reference to the embodiment of the invention illustrated in FIGS. 1 and 2.
- the elongated thin metallic sheet 30 is formed from the same type of resilient material such as spring steel or beryllium copper as the sheet 11 illustrated in FIGS.
- the sheet 30 has a series of generally pointed tabs 33 located at intervals along and extending from what will be referred to as its left edge 34 and a series of substantially identical generally pointed tabs 35 located at intervals along and extending from what will be referred to as its right edge 36.
- the sheet 30 has a row of spaced slots 37 that are located substantially parallel to the longitudinal central axis of the sheet and slightly toward the right edge 36 from the longitudinal central axis.
- the slots 37 are adapted to receive the tabs 33 located on the left edge 34 of the sheet.
- the slots 37 are spaced in mating alignment with the opposite corresponding tabs 34 so that they can readily receive these tabs when the sheet 30 is unrestrained and curls.
- the sheet 30 also has a row of spaced slots 38 that are substantially identical to the slots 37 and are located substantially parallel to the longitudinal central axis of the sheet and slightly toward the left edge 34 of the sheet from its longitudinal central axis.
- the slots 37 are spaced in mating alignment with the opposite corresponding tabs 35 and they are adapted to readily receive these tabs as the sheet curls when it is unrestrained.
- the sheet 30 is prestressed in a manner similar to that of the embodiment illustrated in FIGS.
- axes E and G which are the longitudinal axes of the respective substantially cylindrical sections 39 and 40 lie in substantially the same plane indicated by the line H as the longitudinal axis F of the sheet 30.
- the tabs 33 are forced into the slots 37 and as the right edge 36 curls when the sheet is unrestrained the tabs 35 are forced into the slots 38 so that the edges of the extended sheet are rigidly secured to the central portion of the sheet.
- a tube guide designated generally as 41 that is similar to the previously described tube guide 18 is located in front of the drum 31 and comprises rollers 42 and 43 rotatably mounted on respective shafts 44 and 45.
- the rollers 42 and 43 have respective dished surfaces 46 and 47 that substantially match the exterior shape of the respective cylindrical sections 39 and 40.
- the rollers 42 and 43 are located opposite each other and they are spaced apart by a sufficient distance so that the distance measured between the respective surfaces 46 and 47 of the rollers is approximately equal to the width of the extended sheet when it has curled to form the two cylindrical sections 39 and 40, so that the guide rollers assist the sheet in assuming its proper configuration as it is being extended.
- the tube guide 41 also comprises a guide wheel 48 that is rotatably mounted on a shaft 49 above the extended portion of the sheet 30 and is adapted to contact the underside of the left edge portion of the sheet as it is being extended so that it assists the sheet in assuming its proper extended configuration.
- the tube guide 41 also comprises a guide wheel 50 that is substantially identical to the guide wheel 48 that is rotatably mounted on a shaft 51 below the extended portion of the sheet 30 and is adapted to contact the upperside of the right edge portion of the sheet as it is being extended to assist the sheet in assuming its proper extended configuration.
- the shafts 32, 44, 45, 49, and 51 can be mounted on a suitable frame (not shown) so that the respective drum 31, rollers 42 and 43, and guide wheels 48 and 50 are held in their desired relationships.
- the hollow substantially cylindrical section 39 and the hollow substantially cylindrical section 40 have substantially circular cross sections so that the cross section of the entire extended sheet is substantially shaped like a figure 8.
- the tabs 33 that are on the left edge of the sheet have been inserted through the slots 37 in the upper side of the sheet and they extend into the interior of the substantially cylindrical section 40.
- the tabs that are on the right edge of the sheet have been inserted into the slots 38 in the underside of the sheet and they project into the interior of the cylindrical section 39.
- the cylindrical sections 39 and 40 share a common wall portion located between the slots 37 and 38 designated as 51 and this gives the extended sheet 30 much greater rigidity than if the tabs 33 were inserted into the slots 38 and the tabs 35 were inserted into the slots 37 so that there was no such commonly shared wall portion.
- FIGS. 8 and 9 An additional embodiment of the iny ention designated generally as 52 that is similar to the e ni'bodiinent illustrated in FIGS. 4 through 7 is illustrated in FIGS. 8 and 9 and comprises an elongated pre-stressed thin metallic sheet 53 partially rolled into a coil about an axis generally transverse to its longitudinal axis in a generally flattened condition upon a drum 54 that is rotatably mounted on a shaft 55.
- the thin metallic sheet 53 is formed from a resilient material such as spring steel or beryllium copper and is pre-st ressed in a manner similar to the previously described embodiments so that one of its edges which will be referred to as its left edge 56 will curl upward about an axis I that is substantially parallel to the longitudinal axis J of the extended sheet to form a hollow substantially cylindrical section 57 when the sheet is unrestrained.
- the metallic sheet 53 is also pre-stressed so that its other edge or right edge 58 will curl downward about an axis K that is also substantially parallel to the longitudinal axis .I to form a hollow substantially cylindrical section 59 that is located adjacent to the cylindrical section 57 when the sheet is unrestrained.
- the slots 63 are located in a row that lies substantially parallel to the longitudinal central axis of the sheet and slightly toward the left edge of the sheet from the longitudinal central axis of the sheet. It will be appreciated that for some applications the tabs 60 and 62 and the slots 61 and 63 of the embodiment illustrated in FIGS. 8 and 9 will be unnecessary and thus they can be omitted.
- a tube guide generally designated 64 that is similar to the tube guides of the previously described embodiments is located in front of the drum 54.
- the tube guide 64 comprises rollers 65 and 66 that are rotatably mounted on the respective shafts 67 and 68 and are spaced apart so that the distance between the surfaces 69 and 70 of the respective rollers is approximately equal to the width of the extended curled portion of the sheet 53.
- the tube guide 64 also includes a guide wheel 71 that is rotatably mounted on a shaft 72 and is located above and is in contact with the left curled section 57 of the sheet.
- the tube guide also includes another guide wheel 73 that is rotatably mounted on a shaft 74 and is located below and is in contact with the right curled section 59 of the sheet.
- the shafts 55, 67, 68, 72 and 74 can be mounted on a suitable frame (not shown) so that the drum 54, the rollers 65 and 66, and the wheels 71 and 73 can be located in their desired relationships.
- the tube guide 64 is adapted to assist the sheet 53 in curling properly to assume its proper configuration as the sheet is unwound from the drum 54.
- FIG. 9 it can be seen that when the sheet 53 is unrestrained! and extended the extended hollow substantially cylindrical sections 57 and 59-have substantially elliptic cross sections so that the cross section of the entire extended curled sheet 53 is substantially shaped like a flattened figure 8.
- the tabs 60 on the left edge of the sheet 53 have been inserted into the slots 61 from above the sheet and extend into the interior of the right curled cylindrical section 59 when the sheet is unrestrained and has curled.
- the tabs 62 on the right edge of the sheet 53 have been inserted into the slots 63 from below the sheet and extend into the interior of the left curled cylindrical section 57 when the sheet is unrestrained and has curled.
- the cylindrical sections 57 and 59 also share a common wall portion 75 located between the slots 61 and 63 and this gives the extended sheet improved rigidity.
- the sheet 11, the sheet 30, or the sheet 53 is generally kept coiled in a compact package on the respective drum 16, 31 or 54 until it is desired to extend the appropriate sheet.
- the appropriate drum 16, 31 or 54 is rotated by suitable means known in the art (not shown) so that the sheet extends outward from the drum and begins to curl due to the pre-stressing and the action of the appropriate tube guide 18, 41 or 64.
- the pre-stressing causes the sheet to curl and the edges 12 and 14 to contact the central portion of the sheet so that two cylindrical sections 13 and 15 are formed that are located adjacent to each other and the extended sheet has a figure 8 cross section.
- the pre-stressing causes the sheet to curl and the tabs 33 to enter the slots 37 and causes the tabs to enter the slots 38 so that the extended curled sheet has a rigid figure 8 cross section.
- the pre-stressing causes the tabs 60 to enter the slots 61 and the tabs 62 to enter the slots 63 so that the extended curled sheet has a rigid flattened figure 8 cross section. Since the sheets 11, 30 and 53 curl so that their edges contact the central portion of the sheet the extended sheet presents no edge that might snag items that might be adjacent to the sheet.
- an extendible sheet of relatively long length can be stored in a compact package since the sheet 11, 30 or 53 is stored in its flattened condition in a relatively compact coil and in view of this such sheets can be extended to form rigid booms and the like of comparatively great lengths. If it is desired to collapse the extended sheet 11, 30 or 53 the drum 16, 31 or 54 is rotated in the appropriate manner by means familiar to those skilled in the art (not shown) so that the appropriate sheet is rewound on the appropriate drum.
- the sheet 1 1, 31 or 54 is flattened out as it is being rewound and in the case of the sheets 31 and 54 this results in the tabs 33 and 35 being pulled from the respective slots 37 and 38 and the tabs 60 and 62 being pulled from the respective slots 61 and 63.
- FIGS. 1 through 7 and the flattened figure 8 cross section of the embodiment illustrated in FIGS. 8 and 9 gives the extended sheet 11, the extended sheet 30, or the extended sheet 35 a high moment of inertia about their Y axes.
- the sheets 11, 30 and 53 when they are extended provide resulting structures that possess greater rigidity from a given weight of material than those previously known in the art.
- the location of the respective cylindrical sections 13 and 15, 39 and 40, 57 and 59 adjacent to each other and the sharing of the common wall portion 51 and 75 gives improved rigidity and results in structures that tend to resist twistmg.
- the various embodiments of the invention have been shown as having tabs on both edges of the sheet or no tabs at all, it should be appreciated that for some applications, it might be desirable to have tabs on only one edge of the sheet. It will also be appreciated that although in the preferred embodiments the extendible sheet is formed from steel or copper, the extendible sheet may also be formed by suitable known techniques from a suitable plastic such as that known by the trademark Mylar.
- a collapsible, extendible pre-stressed device comprising an elongated thin pre-stressed sheet defining a curled extended structure having a first hollow substantially cylindrical section formed by one edge of said elongated thin sheet being curled about one side thereof about a first axis which is substantially parallel to the longitudinal central axis of said elongated thin sheet and having a second hollow substantially cylindrical section located adjacent to said first substantially cylindrical section formed by the opposite edge of said elongated thin sheet being curled about the opposite side thereof about a third axis which is substantially parallel to the longitudinal central axis of the sheet and which lies in a substantially common plane with the first axis and the longitudinal central axis of said sheet when said elongated thin sheet is unrestrained from a flattened condition, said elongated thin sheet being collapsible to be rolled in a coil about an axis generally transverse to its longitudinal axis in a generally flattened condition, first guide means in contact with one of said hollow substantially cylindrical sections and
- first and second substantially cylindrical sections each have a substantially circular cross section and the cross section of said entire elongated thin sheet is substantially shaped like a figure 8 when said thin sheet is unrestrained from a flattened condition.
- first and second substantially cylindrical sections each have a substantially eliptic cross section and the cross section of said entire elongated thin sheet is substantially shaped like a flattened figure 8 when said thin sheet is unrestrained from a flattened condition.
- collapsible, extendible pre-stressed device of claim 4 wherein said elongated thin pre-stressed sheet has spaced tabs along the longitudinal edges thereof and two rows of slots located substantially parallel to and near the central longitudinal axis of said sheet, said slots being adapted to receive said tabs as said sheet curls when unrestrained from a flattened condition.
Abstract
Description
Claims (7)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US8472470A | 1970-10-28 | 1970-10-28 |
Publications (1)
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US3696568A true US3696568A (en) | 1972-10-10 |
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US84724A Expired - Lifetime US3696568A (en) | 1970-10-28 | 1970-10-28 | Collapsible, extendible double tubular structure |
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Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3862528A (en) * | 1970-05-04 | 1975-01-28 | Trw Inc | Deployable boom |
US5189773A (en) * | 1991-07-15 | 1993-03-02 | Aec-Able Engineering Co., Inc. | Mast forming and deployment system |
US5718087A (en) * | 1996-05-02 | 1998-02-17 | The Will-Burt Company | Telescoping mast assembly |
US5765320A (en) * | 1993-10-22 | 1998-06-16 | Hamy; Norbert | Linear actuator |
US6217975B1 (en) | 1996-03-25 | 2001-04-17 | Rolatube Technology Limited | Extendible member |
US6256938B1 (en) * | 1987-04-30 | 2001-07-10 | Rolatube Technology Limited | Elongate hollow element |
US6602574B1 (en) * | 1998-06-04 | 2003-08-05 | Rolatube Technology Limited | Extendable, rollable member |
US20060261207A1 (en) * | 2005-04-19 | 2006-11-23 | Woodruff Christopher D | Apparatus and methods for providing a retractable mast |
US20110012003A1 (en) * | 2005-04-19 | 2011-01-20 | Geo Systems, Inc. | Apparatus and methods for providing a retractible mast |
US7895795B1 (en) * | 2007-10-22 | 2011-03-01 | The United States Of America As Represented By The Secretary Of The Air Force | Triangular rollable and collapsible boom |
US20150259911A1 (en) * | 2014-03-12 | 2015-09-17 | Roccor, Llc | Deployment System For Supported Retractable Extension Of A Composite Boom |
US20160032609A1 (en) * | 2013-11-06 | 2016-02-04 | Centrum Badan Kosmicznych Polskiej Akademii Nauk | Clamping mechanism, locking arrangement and method of operating reconfigurable manipulator |
US20160122041A1 (en) * | 2014-10-08 | 2016-05-05 | Analytical Mechanics Associates, Inc. | Extendable solar array |
US9528264B2 (en) | 2013-02-15 | 2016-12-27 | Tendeg Llc | Collapsible roll-out truss |
US9611056B1 (en) * | 2011-01-20 | 2017-04-04 | Deployable Space Systems, Inc. | Directionally controlled elastically deployable roll-out solar array |
US9840060B2 (en) | 2012-11-21 | 2017-12-12 | Tendeg Llc | Rigid slit-tube laminate system |
US10100968B1 (en) * | 2017-06-12 | 2018-10-16 | Irobot Corporation | Mast systems for autonomous mobile robots |
US20180313083A1 (en) * | 2017-04-26 | 2018-11-01 | Opterus Research and Development, Inc. | Deformable structures |
US10189583B2 (en) * | 2015-05-13 | 2019-01-29 | Analytical Mechanics Associates, Inc. | Deployable sheet material systems and methods |
US10611502B2 (en) * | 2016-10-20 | 2020-04-07 | Roccor, Llc | Precision deployment devices, systems, and methods |
US11034467B2 (en) | 2017-04-26 | 2021-06-15 | Opterus Research and Development, Inc. | Deformable structures collapsible tubular mast (CTM) |
US11110595B2 (en) | 2018-12-11 | 2021-09-07 | Irobot Corporation | Mast systems for autonomous mobile robots |
US11239567B2 (en) | 2019-05-08 | 2022-02-01 | Tendeg Llc | Antenna |
US11542043B2 (en) | 2017-04-26 | 2023-01-03 | Opterus Research and Development, Inc. | Collapsible tubular mast (CTM) with surface material between trusses |
US20230092086A1 (en) * | 2021-09-23 | 2023-03-23 | Jefferson Romais | Extendable and retractable support structure |
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Cited By (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3862528A (en) * | 1970-05-04 | 1975-01-28 | Trw Inc | Deployable boom |
US6256938B1 (en) * | 1987-04-30 | 2001-07-10 | Rolatube Technology Limited | Elongate hollow element |
US5189773A (en) * | 1991-07-15 | 1993-03-02 | Aec-Able Engineering Co., Inc. | Mast forming and deployment system |
US5765320A (en) * | 1993-10-22 | 1998-06-16 | Hamy; Norbert | Linear actuator |
US6217975B1 (en) | 1996-03-25 | 2001-04-17 | Rolatube Technology Limited | Extendible member |
US5718087A (en) * | 1996-05-02 | 1998-02-17 | The Will-Burt Company | Telescoping mast assembly |
US6602574B1 (en) * | 1998-06-04 | 2003-08-05 | Rolatube Technology Limited | Extendable, rollable member |
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US20110012003A1 (en) * | 2005-04-19 | 2011-01-20 | Geo Systems, Inc. | Apparatus and methods for providing a retractible mast |
US7895795B1 (en) * | 2007-10-22 | 2011-03-01 | The United States Of America As Represented By The Secretary Of The Air Force | Triangular rollable and collapsible boom |
US9611056B1 (en) * | 2011-01-20 | 2017-04-04 | Deployable Space Systems, Inc. | Directionally controlled elastically deployable roll-out solar array |
US9840060B2 (en) | 2012-11-21 | 2017-12-12 | Tendeg Llc | Rigid slit-tube laminate system |
US9528264B2 (en) | 2013-02-15 | 2016-12-27 | Tendeg Llc | Collapsible roll-out truss |
US20160032609A1 (en) * | 2013-11-06 | 2016-02-04 | Centrum Badan Kosmicznych Polskiej Akademii Nauk | Clamping mechanism, locking arrangement and method of operating reconfigurable manipulator |
US9593485B2 (en) * | 2014-03-12 | 2017-03-14 | Roccor, Llc | Deployment system for supported retractable extension of a composite boom |
US20150259911A1 (en) * | 2014-03-12 | 2015-09-17 | Roccor, Llc | Deployment System For Supported Retractable Extension Of A Composite Boom |
US20160122041A1 (en) * | 2014-10-08 | 2016-05-05 | Analytical Mechanics Associates, Inc. | Extendable solar array |
US9856039B2 (en) * | 2014-10-08 | 2018-01-02 | Analytical Mechanics Associates, Inc. | Extendable solar array for a spacecraft system |
US10189583B2 (en) * | 2015-05-13 | 2019-01-29 | Analytical Mechanics Associates, Inc. | Deployable sheet material systems and methods |
US20190263540A1 (en) * | 2015-05-13 | 2019-08-29 | Analytical Mechanics Associates, Inc. | Deployable sheet material systems and methods |
US10815012B2 (en) * | 2015-05-13 | 2020-10-27 | Analytical Mechanics Associates, Inc. | Deployable sheet material systems and methods |
US11292616B2 (en) | 2016-10-20 | 2022-04-05 | Roccor, Llc | Precision deployment devices, systems, and methods |
US10611502B2 (en) * | 2016-10-20 | 2020-04-07 | Roccor, Llc | Precision deployment devices, systems, and methods |
US20180313083A1 (en) * | 2017-04-26 | 2018-11-01 | Opterus Research and Development, Inc. | Deformable structures |
US11542043B2 (en) | 2017-04-26 | 2023-01-03 | Opterus Research and Development, Inc. | Collapsible tubular mast (CTM) with surface material between trusses |
US10526785B2 (en) * | 2017-04-26 | 2020-01-07 | Opterus Research and Development, Inc. | Deformable structures |
US11034467B2 (en) | 2017-04-26 | 2021-06-15 | Opterus Research and Development, Inc. | Deformable structures collapsible tubular mast (CTM) |
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