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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 7228867 | Tent pole brackets and methods of use A tent pole bracket for use with a tent having a pole, which may comprise a body having a first end and a second end and a first side and a second side, the body including a wall defining an elongate cavity for receiving a tent pole, the cavity being open on the fir... | 06/12/2007 |
| 7219681 | Canopy tension adjuster A tent that includes a swivel portion is disclosed. The tent includes a canopy, a plurality of tent frame components and a swivel portion coupled to at least one of the tent frame components and the canopy. The swivel portion pivots between a relaxed position in whi... | 05/22/2007 |
| 7104586 | Tonneau cover apparatus having rear bar lock A tonneau cover apparatus for attaching a flexible cover about a cargo box of a vehicle, preferably a pickup truck. The apparatus preferably includes, a support frame removably attached about the perimeter of a cargo box of the vehicle, an elongated end plate attach... | 09/12/2006 |
| 7089951 | Airplane hangar A novel airplane shelter provides a plurality of arched vertical support members arranged axially along a line corresponding to the fuselage of an airplane to be sheltered. A cantilever beam is attached to the apex of each arched vertical support member, forming a â... | 08/15/2006 |
| 7066524 | Tonneau cover with turn knob for rear bar locks A tonneau cover apparatus for attaching a flexible cover about a cargo box of a vehicle, preferably a pickup truck. The apparatus preferably includes, a support frame removably attached about the perimeter of a cargo box of the vehicle, an elongated end plate attach... | 06/27/2006 |
| 6851738 | Tonneau cover apparatus having rear bar lock A tonneau cover apparatus for attaching a flexible cover about a cargo box of a vehicle, preferably a pickup truck. The apparatus preferably includes, a support frame removably attached about the perimeter of a cargo box of the vehicle, an elongated end plate attach... | 02/08/2005 |
| 6705338 | Collapsible structures Collapsible structures are provided having at least four panels, including a bottom panel, a first panel, a second panel and a third panel. Each panel has a foldable frame member having a folded and an unfolded orientation, with a fabric material covering portions o... | 03/16/2004 |
| 6691723 | Canopy side frame adjustment unit Apparatus is disclosed herein for adjusting the length of a frame to fit a canopy tied onto and stretched over the frame. Each end of the frame includes a mounting bracket which is slid into an open end of a side tube with a friction fit. A sleeve is secu... | 02/17/2004 |
| 6672644 | Tonneau cover apparatus having engagement member with integral fastening element A tonneau cover apparatus can attach a flexible cover about a cargo box of a vehicle, preferably a pickup truck. The apparatus preferably includes, a support frame removably attached about the perimeter of a cargo box of the vehicle, an elongated end plat... | 01/06/2004 |
| 6619003 | Method of assembling a frame assembly for a partition system A method of assembling a frame assembly for a partition system is disclosed. The frame assembly includes a partition panel, a fabric covering the panel, and a frame component. The frame component automatically and evenly tensions the fabric about the pane... | 09/16/2003 |
| 6564817 | Anchoring device for securing a canopy on a tent frame In a tent assembly that includes a tent frame and a canopy, an anchoring device is used to secure the canopy on the tent frame, and includes a retaining unit, an anchor seat and an anchor block. The retaining unit includes an adjustable retaining sleeve t... | 05/20/2003 |
| 6543835 | Tonneau cover having rear bar lock A tonneau cover apparatus for attaching a flexible cover about a cargo box of a vehicle, preferably a pickup truck. The apparatus preferably includes, a support frame removably attached about the perimeter of a cargo box of the vehicle, an elongated end p... | 04/08/2003 |
| 6505638 | Canopy structure The canopy structure of the present invention includes a generally rigid internal frame structure comprised of light-weight metal tubes and a pliable, waterproof covering such as nylon or other functionally similar fabric. The canopy covering further incl... | 01/14/2003 |
| 6367495 | Canopy structure The canopy structure of the present invention includes a generally rigid internal frame structure comprised of light-weight metal tubes and a pliable, waterproof covering such as nylon or other functionally similar fabric. The canopy covering further incl... | 04/09/2002 |
| 6250322 | Umbrella-shaped shelter An umbrella-shaped shelter includes a single vertical support member either permanently mounted to a support surface, such as the ground, or removably attached to a mounting base disposed on or in the support surface. The lower end of the vertical support... | 06/26/2001 |
| 6068008 | Self-standing shelter with reel-mounted deployable and retractable canopy A storable shelter deployable to a dihedral configuration. It includes a central pole with an upright axis, a pair of flexible rectangular panels and a control for them which includes at least one rotatably biased reel, an edge former for each panel, a st... | 05/30/2000 |
| 5944039 | Boat cover system with adjustable bracket device This invention is a boat covering system with adjustable bracket devices clamped to the outer stanchions of a boat. Flexible support ribs extend across the boat and are inserted into the pair of brackets located on opposite sides of the boat. These flexib... | 08/31/1999 |
| 5853016 | Lightweight vertical wall tent This invention is a very lightweight vertical wall tent including a waterproof cover or rain fly that can be erected or pitched by one person alone to form a semi-rigid roof-like structure with two identical rectangular planar surfaces each sloping at the... | 12/29/1998 |
| 5702147 | Tailgate sealing arrangement A tailgate sealing arrangement for sport utility and other vehicles having a removable, flexible top. The sealing arrangement includes an elongated, rigid member attached to the lower section of the rear portion of the flexible top. The rigid member is re... | 12/30/1997 |
| 5673720 | Collapsible structure having biaxially tensioned cover A structure including a collapsible and erectable frame on which a fabric skin is arranged to be mounted in use, the frame having a central hub with pivotal connections from which at least three legs radiate outwardly and downwardly when in the erected po... | 10/07/1997 |
| 5662133 | Canvas hold-down system and method A system for holding canvas to a frame of a portable shelter or the like. An intermediate portion of a strip is attached to the canvas and the end portions are attached to a clip to form a loop which receives an endless elastomeric band which is attachabl... | 09/02/1997 |
| 5573028 | Stable Tent The invention relates to a collapsible shelter comprising a cloth of supple, sheet-like material and of at least one frame for stretching the sheet-like material, said frame being provided with at least one hub and with rods having high bending strength, ... | 11/12/1996 |
| 5421273 | Collapsible table A collapsible table includes four stretchers connected at four sides by four four-way pipe joints and two stretcher connectors, four upright supporting frames respectively and vertically connected to the four-way pipe joints at the bottom, a table cloth h... | 06/06/1995 |
| 5224507 | Portable protective structure which avoids roof sag and pocketing The structure is adapted for frequent set-up and takedown and is designed to avoid roof sag and pocketing. The structure includes a framework having plural vertical supports and plural horizontal supports bridging between adjacent vertical supports. A rem... | 07/06/1993 |
| 5117853 | Portable shade structures employing non-snag hooks A portable shade structure includes a structural framework with space supports, and hook-receiving holes along some of the supports. A removable fabric cover fits across the structural framework, and has plural hooks attached at spaced locations dimension... | 06/02/1992 |
| 4982534 | Suspended membrane structure A suspended membrane structure, comprising: a plurality of suspending members arranged substantially parallel or substantially radial fashion; a membrane downward hung by a plurality of wire members (or hanging members) from a plurality of points on each suspe... | 01/08/1991 |
| 4887626 | Stretched cloth fixing device A device for securing the edge of a stretched sheet, applicable more particularly to securing the lower edge of a tent canvas of a light shelter of a general pyramidal shape, has a horizontal extruded section with a groove opening, in one of its vertical ... | 12/19/1989 |
| 4880024 | Self-supporting tent A self-supporting tent structure for protecting small private aircraft and the like comprises a plurality of vertical side posts each defining a corner of the tent to which a roof membrane is secured. A lifting apparatus is connected to the roof membrane ... | 11/14/1989 |
| 4817655 | Canopy assembly A canopy assembly includes a frame composed of a plurality of elongated elements interconnected to form an array to which a fabric is secured and stretched. Portions of the fabric are secured in tension into corresponding different ones of the elements, a... | 04/04/1989 |
| 4691957 | Roll-tight tarp system A tarp assembly for covering an open top of a truck trailer has a tarp with a longitudinal edge fixed to one side of the trailer. A roll bar secured to the free edge of the tarp is rotated with a crank rod to roll the tarp to an open position and unroll t... | 09/08/1987 |
| 4677999 | Canopy This canopy system is supported by alternate poles and features edge cords to stress the center of the canopy fabric to reduce sag. The cords are attached adjacent each edge of each canopy segment and resembles a bell curve with respect to that edge. Long... | 07/07/1987 |
| 4484777 | Apparatus for tensioning a cover sheet over an open-topped rectangular box or building Apparatus for drawing taut a cover sheet over a box opening such as a truck box or a walled building of rectangular plan form provides stop members mounted on a longer sidewall presenting stop surfaces spaced below a longitudinal edge, the surfaces formin... | 11/27/1984 |
| 4084598 | Linked collapsible shelter structure The collapsible shelter structure comprises a series of panels held in angularly spaced relationship to define a shelter structure. The framework of each panel comprises a pair of generally parallel bars held in spaced relationship by a single central str... | 04/18/1978 |
