U.S. patents available from 1976 to present.
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Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.

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Class 182/139 - Tensioned peripherally


Subclass of Class 182 - Fire escape, ladder, or scaffold
Definition: Device wherein the sheet or net is tensioned peripherally.
No. of patents: 18
Last issue date: 04/15/2008


NumberTitleIssue Date
7357728Human free-fall slide
A slide and process of using the slide for humans' amusement, recreation and entertainment. The slide is an inflatable apparatus comprising a slide device and an airbag device. The slide device is an inflatable bag having a slide segment. The airbag device has a bot...
04/15/2008
7134526Driveway safety net and method
A driveway safety net. The safety net includes two stakes and a net that attaches between the two stakes. When the two stakes are placed on both sides of a driveway and the net is attached between the two stakes, the net hinders balls and other toys from rolling pas...
11/14/2006
7094181Transportable trampoline system
A portable trampoline exercise system, including a foldable trampoline with long-lasting rigidity in the frame and a specifically adapted carrying case for transporting the folded trampoline. The trampoline is made foldable by using hinges to connect sections of the...
08/22/2006
7060001Trampoline system
A trampoline system has a rebounding bed and a resilient member located below the bed at such a position that the bed depresses the resilient member when the bed is sufficiently depressed by a person jumping on the bed. The presence of the resilient member makes it ...
06/13/2006
7018322Quarter-foldable rebounder with improved features
A quarter-foldable rebounder includes a frame of circular configuration, a circular mat, springs and legs. The frame is formed by four one-piece molded quarter-frame arcuate segments having integral pairs of half-fold and quarter-fold hinges and a rod embedded in ea...
03/28/2006
6846271Trampoline system with plural beds
A trampoline system has a rebounding bed and a resilient member located below the bed at such a position that the bed depresses the resilient member when the bed is sufficiently depressed by a person jumping on the bed. The presence of the resilient member makes it ...
01/25/2005
5984837Tensioned floor system
A play system floor includes a frame defining the periphery of an area to be floored and a webbed flooring constructed of a webbing material extending between the frame members. The webbing material has an optimal predetermined stretch coefficient at whic...
11/16/1999
5336135Amusement apparatus
In one embodiment the amusement device is a series of trampolines arranged vertically and offset to allow a user, starting at the top to spring serially from the uppermost to lower trampolines. A tram can deliver the user to the top. In another embodiment...
08/09/1994
5299989All surface trampoline
An all surface trampoline comprising a hollow inflatible support having an inner and an outer periphery and having an open space between the inner periphery, an elastic trampoline mat suspended over the open space, and wherein a suspension device includes...
04/05/1994
4351413Deceleration apparatus for safety nets
A landing net assembly (10) provides a controlled deceleration landing device for pole vaulters, high jumpers and the like in such a way that the impact of a free-falling body and the rate of displacement of the landing net is dampened in a controlled man...
09/28/1982
4284271Hexagonal jogging platform
A hexagonal jogging platform having a tubular support frame with rounded corners, detachable, tubular support legs at each corner and a fabric platform attached to the tubular frame by novel coil springs having hooked ends bent from the axial center of th...
08/18/1981
4162063Adjustable springs for trampolines and the like
The typical helical springs used to support the bed within the frame of a trampoline or the like are modified to incorporate adjustable hooks threadedly anchored within the springs at one end so that their overall length, and thus the tension on the bed, ...
07/24/1979
4159826Pneumatic jogging platform
My pneumatically sustained, flexible exercise surface-and-platform, which I call a "Trampol-air," initially designed for foot-ease along with all the benefits of exercising in any jogging-like manner on a flexing-resilient mini-trampoline-like surface, co...
07/03/1979
4068739Disaster evacuation air cushion
A disaster evacuation apparatus is disclosed which is particularly useful in the evacuation of victims caught in fires of multistoried buildings, airplane crashes, or similar disasters where the normal escape routes or fire exits have been made inaccessib...
01/17/1978
4054103Techniques for safely unloading externally-slung helicopter loads
Precision hover is necessary when one must position a load precisely on the deck of a ship. Manual precision hover is possible under very light wind gust conditions and a calm sea. The techniques described here are directed to those special windy days whe...
10/18/1977
3983585Concealed spring anchoring means for trampolines and method of producing same
Cushioning pads are placed along the sides of a trampoline and have sufficient width to cover the ordinarily exposed springs. The sides of the trampoline frame are reinforced by an extra tube which assists in supporting the pads out of frictional contact ...
10/05/1976
3948351Catching device for a free-falling body
A catching device for a free-falling body comprising a material web which is held at opposite sides at support bars or ledges which are supported at a spacing from the floor. The support bars are held resiliently damped at a portable base frame carrying t...
04/06/1976
 
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