In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7370380 | Mattress with removable top A mattress is constructed from a mattress body having an upper and a lower deck, which is preferably pervious to moisture and air. A removable panel, which includes a top layer of breathable fabric, a bottom layer of a fabric that forms a moisture barrier, and a bat... | 05/13/2008 |
| 7340785 | Sanitary liner for a patient transfer mattress A patient transfer device includes an inflatable mattress and a liner releasably attached to the inflatable mattress. The inflatable mattress includes a top sheet having opposite side edges and a bottom sheet defining a plurality of holes to create a cushion of esca... | 03/11/2008 |
| 7299513 | Bladder support system A bladder support system for reducing the stresses placed upon a bladder unit. The bladder support system includes a bladder unit fillable with a fluid, a base member comprised of a sheet structure, wherein the base member is positioned adjacent to the bladder unit ... | 11/27/2007 |
| 7174583 | Adjustable height foundation A height-adjustable mattress assembly is constructed of a mattress foundation and an optional frame assembly with a plurality of ground support members supporting the mattress foundation. The ground support members can be attached to the frame assembly in at least t... | 02/13/2007 |
| 7083147 | Modularized insulation, systems, apparatus, and methods Modularized insulation blanket for thermal and/or acoustical insulation. The modularized insulation blanket has a cover formed of a distal layer and proximal layer in sealed mated relationship. The distal and proximal layers are sealed along longitudinal and latitud... | 08/01/2006 |
| 7076822 | Stacked cushions Stacked cushions, cushioning elements thereof, materials and processes for making the same are disclosed. ... | 07/18/2006 |
| 6954957 | Air mattress with pillow top An air mattress includes a top; a first fastener member positioned along at least a portion of a side edge of the mattress; a pocket formed on the top by a layer extending along the top and attached along its periphery to the air mattress, at least a portion of the ... | 10/18/2005 |
| 6952851 | Mattress with transparent cover A sleeping mattress construction provides a mattress cover that is fabricated from a transparent material so that the interior of the mattress may be visualized to prevent concealment therein of contraband. In one embodiment the mattress is an air mattress formed of... | 10/11/2005 |
| 6922862 | Mattress topper In accordance with the instant invention, there is provided a mattress topper which is designed to be placed atop a mattress and/or box spring combination. In the preferred arrangement, the topper consists of a sandwich of three layers. The outer layers are preferab... | 08/02/2005 |
| 6243893 | Portable water cooled mattress A portable water cooled mattress for use with infants or the like comprising an air bladder lower level constructed of an air proof material and including an inflation and deflation opening valve. A water bladder layer is positioned on a top surface of th... | 06/12/2001 |
| 5564141 | Hydraulic mattress and platform mattress support The present invention comprises a multi-component mattress comprising a pillow top detachably connected to a mattress core. The mattress core comprises a plurality of hydraulic cylinders, liquid impervious covers for the cylinders, a variety of foam cushi... | 10/15/1996 |
| 5172441 | Water mattress quilted top with stiffening inserts A quilted cover for a water mattress includes a peripheral side wall and a quilted top releasably attached thereto. The top has internal padding and a fabric outer surface. There is a peripheral recess in the top with the quilted fabric extending into the... | 12/22/1992 |
| 5161271 | Waterbed mattress cover with removable top and insertable foam pads A waterbed mattress cover has a peripheral side and a top releasably attached to the side. Both the cover and side are quilted. The top may be removed from the side so that it may be washed or cleaned. The underside of the top has an opening and there are... | 11/10/1992 |
| 5109559 | Flotation mattress pad having a cover with pad retaining straps A relatively shallow mattress for a bed which has three integral parts: an inner bladder, an outer bladder and a mattress cover. The inner bladder is formed from a rectangular top and bottom side welded together along the edges. The top side contains a va... | 05/05/1992 |
| 5092006 | Non-electrical reversible thermal cushion for a mattress or other body support surface A reversible thermal cushion includes a resilient layer; an insulating layer adjacent the resilient layer, the insulating layer having a reflective surface facing away from the resilient layer; and a PVC top sheet and bottom sheet for containing the resil... | 03/03/1992 |
| 5086528 | Water mattress and method for making same A watermattress having a first sheet and a second sheet forming a container for receiving water includes a third sheet for dividing the container into a bladder for receiving water and a cavity. A sheet of foam including portions which define a plurality ... | 02/11/1992 |
| 5074001 | Waterbed mattress insulation with heat transfer holes at a greater density towards foot end of mattress An improved waterbed mattress includes a bladder having a layer of insulation material extending substantially from end to end and side to side therein, which insulation material has a plurality of generally upright holes opening through the top and botto... | 12/24/1991 |
| 4972534 | Flotation cover for mattresses A mattress cover for use on a conventional innerspring mattress to give the same feeling as is provided by a waterbed, including a liquid-filled flat bladder having a small height from its top wall to its bottom wall. Insulative padding is included in a c... | 11/27/1990 |
| 4860395 | Water-cooled lounging pad A water-cooled lounging pad having circular top and bottom sheets of flexible plastic material to be lain upon by a person obtaining a suntan, a heat seal joining the top and bottom sheets at their peripheries to form a flattened circular waterproof closu... | 08/29/1989 |
| 4656681 | Water mattress An improved water mattress having a multi-layer top panel, the multi-layers consisting of at least two sheets of vinyl which are plastic heat sealed in a manner to provide small pillow shaped pockets, each such pillow having an internal layer of polyester... | 04/14/1987 |
| 4625351 | Waterbed frame A frame for a waterbed having a standard thickness or height when inflated. The frame includes a stand positioned on the ground and a rectangular planar support member which is secured to the top of the stand so that the upper surface of the support membe... | 12/02/1986 |
| 4602396 | Waterbed flotation system with vapor barrier A flotation sleep system for a liquid filled bed wherein a sheet of closed cell polyethylene foam bonded to a foamed layer is provided between the ticking of the bed and the watermattress. This arrangement prevents the collection of moisture or condensati... | 07/29/1986 |
| 4597120 | Waterbed utilizing dual fluid-filled mattresses and having improved surface continuity A waterbed comprising a pair of like fluid-filled mattresses arranged side-by-side; surface continuity means preferably being a covering around the bottoms and outward sides of the mattresses and a flexible sheet attached to the covering extending across ... | 07/01/1986 |
| 4549323 | Waterbed mattress pad An insulated mattress pad eliminates the necessity of heating the water of a waterbed by electrical or other means. The mattress pad includes a pocketed covering of washable materials into which is removably inserted an insulating pad formed of an insulat... | 10/29/1985 |
| 4370768 | Damped fluid displacement support system A liquid-sealed envelope contains a core of resilient urethane foam saturated with water, all air having been expelled therefrom. This assembly is enclosed within an outer casing of a resilient material to which the envelope is glued.... | 02/01/1983 |
| 4245363 | Flotation mattress Disclosed is a flotation mattress comprising (a) a planar, flexible bag (10) adapted to hold water during use of the mattress, (b) a hollow, annular compartment (12) surrounding the bag (10) in the plane of the bag, the compartment (12) being collapsible ... | 01/20/1981 |
| 4245362 | Flotation mattress Disclosed is a flotation mattress comprising (a) a planar, flexible bag (10) adapted to hold water during use of the mattress, (b) a hollow, annular compartment (12) surrounding the bag (10) in the plane of the bag, the compartment (12) being collapsible ... | 01/20/1981 |
| 4242766 | Heat transfer bed assemblies This invention provides a bed assembly having a thermally absorbent mattress such as a water-bed in thermal conductive relationship with a thermal-panel mattress bin arrangement receiving the mattress. Thermal energy transfer bath for cooling and heating ... | 01/06/1981 |
| 4228555 | Water bed sheet frame Disclosed herein is a frame network to be used in association with a water bed to secure the bed sheets thereon defined by a pair of spaced rectangular frames disposed along the top edge of a water bed in which the top most rectangular frame pivots relati... | 10/21/1980 |
| 4189798 | Foam mattress with floatation torso support A sleeping mattress consisting of multiple layers of foam material having different densities and structural characteristics with sealed chamber formed therein for receiving a flexible but inelastic liquid filled container. The sealed chamber is located i... | 02/26/1980 |
| 4187567 | Waterbed A waterbed construction having an inner rigid frame member and a supported flexible bottom member for holding and laterally supporting a water filled bladder or vinyl mattress. The inner rigid frame member and bladder are covered and interlocked by a cush... | 02/12/1980 |
| 4187566 | Water mattress construction A water mattress construction for a water bed having a foam assembly forming a cavity for surrounding and supporting a water-filled bladder. The foam assembly is formed of several layers of foam having different densities to provide strong support for the... | 02/12/1980 |
| 4097717 | Water bed mattress with regulated heating means therefor and controlling the heat loss therefrom and the method of making the same A water bed mattress with means for heating the same and with means for controlling heat losses therefrom. In one embodiment of the invention, the water bed mattress comprises a pair of upper and lower sheets connected by a peripheral side wall to form a ... | 06/27/1978 |
| 4065819 | Flotation support system A flotation support system including a generally rectangular air frame, which is defined by a tubular air-filled member which surrounds an open region. A base sheet extends beneath the open region and is secured to the tubular member to define with such m... | 01/03/1978 |
| 4062077 | Waterbed mattress construction Waterbed mattress construction having the size and appearance of a conventional innerspring mattress. An inner water mattress is supported laterally by a circumscribing framework, and an outer shell is removably mounted over the framework. The shell compr... | 12/13/1977 |
| 4015299 | Water bed A water bed construction includes a box foundation on which rests an upwardly opening rectangular coffer formed by a polyurethane sheet and a polyurethane perimetrical member disposed thereon. The coffer cavity receives and contains a shallow water mattre... | 04/05/1977 |