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Patent No. 5265827

Paddle Wheel Plane

An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.

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Class 248/453 - Bottom


Subclass of Class 248 - Supports
Definition: Device wherein the retaining means engages the supported
No. of patents: 87
Last issue date: 09/04/2007


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NumberTitleIssue Date
7264216Tilt-back triangular supports for speaker and amplifier cabinets
The present invention is a rigid or collapsible folding stand for a high fidelity amplifier or speaker. In general, the amplifier or speaker has a rear base edge placed on a two or more flexible straps. The amplifier or speaker is then tilted backward until it touch...
09/04/2007
7226030Book holder
The book holder has displaceable arms and a back member that can facilitate retaining a book in an open displayed manner. The book holder can either be handheld or be placed or attached on a supporting surface. ...
06/05/2007
7213794Book stand
A foldable book stand for viewing written materials, music and the like or for writing upon same, the stand is further fitted with a battery powered lamp. The preferred embodiment measures about 4 inches square in folded state. The stand is fitted with articulation ...
05/08/2007
7185869Foldable book holder
A book stand folds flat, forming a single panel for storage or use as a clipboard, sketchpad, or straight edge. The book stand may also unfold into operational configuration to include an inclined supporting surface and a shelf, on which a book can rest at an inclin...
03/06/2007
7172167Reading stand
The invention provides a reading stand. The reading stand may include a base including a base member case. Further, the reading stand may include a reading lid disposed upon the base member case, the reading lid including a reading platform having a front side and a...
02/06/2007
7168672Multifunctional support rack
A support rack includes a support plate, a support stand, a locking member, a pen holder, an indication member, and two auxiliary clips. Thus, the support rack functions as a clipboard, a book rack, an exhibition rack, a price indication rack, a pen holder or the li...
01/30/2007
7152840Book holder
A book holder removably attachable to a vehicle or structure such as a stroller, walker, wheelchair or car seat for mobile applications. The book holder for holding a book or drawing surface in a usable position thereon for by the occupant of the vehicle. The book h...
12/26/2006
7128301Two piece calendar holder
A holder for decorative sheet material comprising two separate pieces, one piece for attaching to an upper edge portion of a sheet material and for hanging from a wall, the other piece for attaching to a lower edge portion of the sheet material. Each piece of the ho...
10/31/2006
7124988Folding cantilever support and method
A portable device and method for supporting a load in a cantilevered disposition relative to a shelf, cabinet, or other extant structure is provided, which device is foldable into a relatively compact entity when not in use. The device includes at least a platform p...
10/24/2006
7100884Device for holding sheets
A device for holding individual sheets contains a circular baseplate with a weight. A U-shaped clip is integrally formed on the upper side of the baseplate and is situated in a plane running obliquely with respect to the upper side of the baseplate. Arranged within ...
09/05/2006
7100883Document holder for computer workstation
A document holder, adapted for use at a computer workstation or word processor, includes an easel supported by spaced apart support arms. The easel and the support arms are connected to each other at respective pivot connections to provide for angular adjustment of ...
09/05/2006
7083155Adjustable reading bookstand
A bookstand has a pivotally adjustable book holder having a frame with upper and lower book supporting plates slidable across each other to provide a book supporting surface of variable size for supporting spines and rear covers of open books of different sizes. The...
08/01/2006
7066437Portable bookstand
The base of a conventional bookstand on which to support a book is a rectangular base having an area substantially as large as an opened book whereas the invention employs a method of placing a book on a crisscross form defined by a horizontal base and a vertical ba...
06/27/2006
7066438Collapsible supporting device for a portable computer
In a collapsible supporting device for a portable computer, a pair of base members and a pair of interconnecting members are connected pivotally to a coupling seat. A pair of supporting members are coupled to the interconnecting members, respectively. The supporting...
06/27/2006
7044425Integrated keyboard platform and document support
An integrated keyboard platform and document support includes a base and a keyboard support member having an upper surface. The keyboard support member is movably mounted to the base to provide adjustment through a plurality of positions of the keyboard support memb...
05/16/2006
7040591Adjustable book holder assembly
A book support is mounted to a vertical upright assembly affixed to a weighted base. The book support is selectively positionable in various horizontal positions by swinging a horizontal swing arm articulated with a pivot connection to a one end of a horizontally ex...
05/09/2006
7028966Laptop computer paper support device
A laptop computer paper support device that includes a shelf member for engaging a laptop computer case, a support member secured to the shelf member for supporting a document, and an extension member pivotally or otherwise adjustably secured to the support member f...
04/18/2006
7017878Book holder on the steering wheel
A book holder for use with automobile steering wheel is not only fastened to the rim of an automobile or truck steering wheels so as to hold printed matter and various electronic devices, but also is foldable to smaller size for storage. The book holder can also be ...
03/28/2006
6971622Supporting device for a portable device
A supporting device for a portable device to measure and/or test components of electrical and/or optical networks includes a supporting plate, which is built in, or may be attached to, the equipment; a supporting frame, which may stand at one end on the sub-surface ...
12/06/2005
6941691Display board system
A mounting structure for display of at least one display board wherein the structure includes at least a pair of spaced apart retaining members where the display board may be pressed into secure engagement between the retaining members. ...
09/13/2005
6889951Document holder
The present invention is a single or multiple sheet document holder with a base plate supporting three posts, each post having mounted at its top a cupola formed with an upwardly facing socket adapted to securely and easily rotatingly hold a metal ball. The document...
05/10/2005
6883769Clipboard
A clipboard has a clip with upper and lower parts joined by a hinge. The lower part includes a locking wall and spaced-apart hold-down edges. The board has at least one upstanding lock element engaged with the locking wall on the lower part of the clip. The board in...
04/26/2005
6851656Laptop computer paper support device
A laptop computer paper support device for removably setting on the top of a laptop computer case and for holding at least one document above a screen on a laptop computer. The laptop computer paper support device comprises a support member and shelf member. The sup...
02/08/2005
6745989Card holder
A card holder for supporting or retaining a card such as a greeting card is provided. In one exemplary embodiment, the card holder has two holding portions each for accommodating a portion of a card. In another exemplary embodiment, the card holder has a first leg e...
06/08/2004
6729653Hinged book holder
An apparatus for supporting a book or magazine for reading includes a bottom member and a top member. The top member is elevated at one end above the bottom member and is adapted to pivot about an axis from a first closed position for reading into a second open posi...
05/04/2004
6547202Floating bookstand
A novel book stand arrangement capable of sustaining common reading material above the surface of water. An angled shelf capable of accommodating books, magazines, and folded newsprint is positioned at a height and angle optimal for users lounging and sub...
04/15/2003
6471174Graphic arts station
An adjustable easel is described that may be used by multiple persons and that may be modified according to the preferences of a user. The easel includes a plurality of vertical supports connected to each other. Holes are spaced apart along the length of ...
10/29/2002
6446929Dual rotatable book holder
A dual rotatable book holder designed to hold two books for quick and easy reference. Two plates form a two face book platform with lips extending outwardly hold two books back-to-back. The two face book platform is removably engaged with a rotatable base...
09/10/2002
6382581Paper easel
A paper easel for supporting one or more sheets of paper on a work surface includes a bendable sheet of material having a center panel separating a right wing panel from a left wing panel. The center panel is divided from the right wing panel by a right c...
05/07/2002
6338216Interlocking crossbar easel
An improved artist and display easel that is secured from the top by use of a crossbar that interlocks with the easel to firmly hold a standard canvas or display up to twenty-four inches in height. The easel is preferably made of a flexible material so th...
01/15/2002
6293058Drywall support system
A support system of brackets and rods designed to be removably attached to a building stud. Used in pairs, the system can hold sheets of building material within the holing bracket and supported by a back rod so that the builder has the materials within e...
09/25/2001
6286801Apparatus for holding books
Adjustable, collapsible book holder apparatus includes an elongated double-ended support member and a connector at one of the ends of the support member. A double-ended elongated book support element is connected to the support member and can be moved bot...
09/11/2001
6272779Display board system
A mounting structure for at least one display board is disclosed. The Display board includes a first mounting interface and a second mounting interface. The mounting structure includes a first pivotal interface including a barb adapted to engage the first...
08/14/2001
6264160Copy holders
A copy holder is provided with a document holding stand supported adjustably by a support structure to provide a stable support while allowing operator controlled, incremental adjustment through a working range to vary the angle at which the document hold...
07/24/2001
6254136Page holder
A page holder for holding the pages of a book in an open arrangement having an attachment means such as a spring clip for attaching the page holder to the cover or to one or more pages of the book, a holding means adapted to hold, to the cover of the open...
07/03/2001
6131872Article supporting device
A device placable on a surface for positioning an article for viewing utilizing a base member. The base member includes a first portion and an angularly attached second portion. The first portion and second portions are capable of rotating about an axis. ...
10/17/2000
6129323Sheet stand
A sheet stand which stands a sheet, such as a piece of paper, with a simple operation. The sheet stand includes the sheet stand body 20 and the ball 30. The bottom of the sheet is held between the curved holding surface 21 of the sheet stand body 20 and t...
10/10/2000
6085917Shelf-mounted, spring-loaded storage device
A storage device is provided for use with a shelf having an accessible edge. A frame is formed from a single piece of rod stock that is shaped to define first and second U-shaped members that can slidably engage the accessible edge of the shelf. The first...
07/11/2000
6036158Portable steering wheel mounted tray
A portable, rigid tray that may be attached to a steering wheel of a motor vehicle for use as a surface for writing, drawing, using laptop computers and the like. The tray has a generally flat upper surface and a lower surface bound by a distal end, proxi...
03/14/2000
6027093Multi-purpose table assembly
A multi-purpose table assembly that includes a wheeled base, an adjustable height vertical support extending from the base; a lockable table support bar assembly including a table support bar and a counter balance support bar each oriented at a right angl...
02/22/2000
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