公开(公告)号：US10591656B1

公开(公告)日：2020-03-17

申请号：US15087190

申请日：2016-03-31

Applicant: X Development LLC

Inventor： Martin F. Schubert ,  Eric H. C. Liu

IPC: A01G9/20 ,  A01G22/00 ,  F21V8/00 ,  F21S11/00 ,  G02B19/00 ,  A01G33/00 ,  A01G31/02 ,  A01G7/04 ,  F21W131/40

Abstract: A passive illuminator includes a luminescent region with a semiconductor material that absorbs first photons having energy greater than or equal to a threshold energy. In response to absorbing the first photons, the semiconductor material emits second photons, through a spontaneous emission process, having less energy than the first photons. A waveguide is optically coupled to the luminescent region to transport the second photons a distance from the luminescent region. An extraction region optically coupled to the waveguide to emit the second photons, and the waveguide is disposed between the extraction region and the luminescent region.

公开(公告)号：US09840913B1

公开(公告)日：2017-12-12

申请号：US14920793

申请日：2015-10-22

Applicant: X Development LLC

Inventor： Gabriella Levine ,  Richard W. DeVaul ,  Eric H. C. Liu

IPC: E21D9/13 ,  E21D11/40 ,  E21D9/11 ,  E21D11/00 ,  E21C41/24

CPC classification number: E21D11/403 ,  E21B7/205 ,  E21D9/04 ,  E21D9/111 ,  E21D9/13

Abstract: Techniques and mechanisms to form a reinforcement structure including dirt processed during drilling of a tunnel. In an embodiment, a device includes a drill head to drill an underground tunnel, where a housing of the device takes in dirt produced by such drilling. A mixer and other components of the device variously condition the dirt to produce a casing material that is subsequently provided to a compactor of the device. The compactor extrudes the casing material through a die. The extruded casing material is eliminated from the device to form a reinforcement structure at one or more sides of the tunnel. In another embodiment, a fiber optic cable is paid out from the device into the tunnel during the drilling, or is pulled into the tunnel by the device during the drilling.

公开(公告)号：US09784257B1

公开(公告)日：2017-10-10

申请号：US14741110

申请日：2015-06-16

Applicant: X Development LLC

Inventor： Eric H. C. Liu

IPC: F04B9/107 ,  A41D13/015 ,  A41D13/05 ,  A41D27/06

CPC classification number: A41D13/0155 ,  A41D31/005

Abstract: Techniques and mechanisms for changing a flexibility of a sheet structure. In an embodiment, a garment or other device includes sheet structure, where an interface region is disposed between overlapping layer portions of a sheet structure. While a pressure differential is maintained between the interface region and a chamber of the garment, a valve of the garment is opened to allow an exchange of fluid between the interface region and the chamber. In another embodiment, the exchange of fluid changes a flexibility of the sheet structure by initiating or alleviating friction jamming between the overlapping layer portions.