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Patent No. 6295668

Maternity Beach Chair

A beach chair which can be adapted for a woman who is pregnant and wishes to sunbathe in the prone position.

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Class 244/123.9 - Tubular spar


Subclass of Class 244 - Aeronautics and astronautics
Definition: Subject matter in which the beam (i.e., spar) is hollow.
No. of patents: 11
Last issue date: 03/04/2008


NumberTitleIssue Date
7338703Metallic-polymeric composite materials
Composites are provided having improved strength and rigidity, with respect to mass or volume, as compared to known polymeric composites or polymeric composites in combination with metal reinforcement. The composites of the present invention are metallic-polymeric c...
03/04/2008
7198691Fastenerless internal support for hollow structures
A reinforced structural member having a tubular member and a support structure. The tubular member has a sidewall that defines a hollow interior portion. The support structure is formed from a composite material and bonded to the sidewall in at least two predetermin...
04/03/2007
6655633Tubular members integrated to form a structure
Integrally stiffened and formed, load carrying structures comprising a plurality of elongated thin-walled tubes placed co-extensively in a complementary side-by-side fashion which together form a hollow structure having a desired external contour. Integra...
12/02/2003
4548371Ultralight aircraft
Improved ultralight aircraft constructed with a tubular keel extending over the length of the aircraft from forward of its wing to the tail thereof. The aircraft includes a cantilever engine mount which is carried on a pair of mounting plates extending lo...
10/22/1985
4538780Ultralight composite wing structure
A composite wing structure for an aircraft, missile and the like. The structure characterized by the use of ultralight materials and having a potential of being stealthy....
09/03/1985
4437426Wing type air foil assembly
The present invention relates to a wing type air foil assembly that is adapted to be utilized by boats or vessels, or even vehicles, that is designed to function in the same general manner as a wind sail for providing driving thrust to the vessel or vehic...
03/20/1984
4415131Arc wing aircraft
A lightweight, man carrying aircraft including a skeletal fuselage assembly in combination with a primary arc-shaped lifting airfoil having variable camber, incidence angle, and pitching moment and a secondary stabilizing airfoil of a tubular, ring-like c...
11/15/1983
4387866Fluid motor driven propeller-aircraft for vertical take off and landing with a multipurpose pipe structure
An aircraft has a pair of tiltable wings for vertical and horizontal flight with propeller-pairs which are driven and synchronized by a fluid transmission between the power plant and the propellers. The interior structure which keeps most of the component...
06/14/1983
4079903Lightweight contoured load carrying structure
Contoured load carrying filament reinforced matrix structure which may be in the form of an airfoil or hydrofoil and comprising a plurality of elongated coextensive tubes disposed in side-by-side relationship to form a tube assembly and individually of su...
03/21/1978
4036455Air-cargo liner
For increasing the cargo capacity of an airplane of given weight, the cargo space is formed by a plurality of parallel tubes having their lengths extending spanwise of the wing, so that such cargo-carrying space is generally coextensive with the lift-prod...
07/19/1977
3962506Multi-chambered cellular structure and method for manufacture
A fiber-reinforced plastic article of manufacture having a multi-chambered, cellular structure with an outer shell having a fluid foil shape with a leading edge having a smooth radius of curvature and a trailing edge [noncircular]cross section over a subs...
06/08/1976
 
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