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Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 5693899 | Fully wrapped core wire musical instrument string A fully wrapped round or non-round core wire musical instrument string (10) comprising a core wire (12). A plurality of inner wrap wires (14), (16), (18) are helically wound concentrically about a central portion of the core wire (12). An outer wrap wire ... | 12/02/1997 |
| 5673951 | Security device The invention relates to a security device for doors or windows for foiling unwanted entry into a secured facility comprising a limited rotational vertical rod having a plurality of parallel horizontal rods extending from said vertical rod. The parallel h... | 10/07/1997 |
| 5524943 | Security device The invention relates to a security device for doors or windows for foiling unwanted entry into a secured facility comprising a limited rotational vertical rod having a plurality of parallel horizontal rods extending from said vertical rod. The parallel h... | 06/11/1996 |
| 5472395 | Martial arts training apparatus The invention relates to a Martial Arts Training Apparatus employing a vertical column, a semicircular screen fastened to the front of the vertical column and covered with a rubber cover which is in turn covered with a leather cover. A heavily padded arm ... | 12/05/1995 |
| 5413011 | Positive variable speed transmission system A positive, variable speed transmission system comprising a pair of beveled plates and a plurality of slidable balls which are moved between said plates, the position of said slidable balls determining the speed variation of said transmission system.... | 05/09/1995 |
| 5032715 | Apparatus and method for counting containerized items The invention relates to apparatus for accurately counting the number of containerized items by movement of a unitary emitting and sensor of a beam of light over rows and columns of the planar surface platform supporting the containerized items.... | 07/16/1991 |
| 4890657 | Apparatus and method for employing a portable workshop The invention relates to apparatus and methods for the operation of a portable workshop over workpieces comprising arms for clamping said workpieces, a first pair of guides supported upon said arms, a plurality of circular rims positioned within each othe... | 01/02/1990 |
| 4875389 | Chain driven, continuously infinite variable speed transmission system A chain driven and receiving, continuously infinite variable speed transmission system comprising a pair of cones positioned in the same plane with the smaller diameter of each cone in proximity with the larger diameter of the other and encircled by a con... | 10/24/1989 |
| 4831940 | Metal separation system for incinerators The invention relates to a system for separating metals and ashes from the residue remaining after incineration by positioning a magnetic drum between six (6) and twelve (12) inches from the conveyor transporting said residue to result in the maximum amou... | 05/23/1989 |
| 4815345 | Portable hydrant wrench A portable hydrant wrench for use by one man comprising one or more drive bars having a rectangular cross-section and employing a detachable socket wrench at one of the free ends. A flange is secured to the hydrant to be serviced provided in conjunction w... | 03/28/1989 |
| 4709263 | Stereoscopic imaging apparatus and methods A stereoscopic process for providing three dimensional viewing through a conventional television comprising the steps of receiving video signals having chromatic aberration, modifying said video signals into stereo images for any scope aspect, recording s... | 11/24/1987 |
| 4570851 | Temperature regulating, pressure relief flow valves employing shaped memory alloys The invention relates to a temperature regulating/pressure relief valve employing a shaped memory alloy wire positioned under tension within the housing of the valve. The wire contracts upon an increase in temperature in the fluid passing through the valv... | 02/18/1986 |
| 4541519 | Coin-operated, elapsed time apparatus A coin operated elapsed time apparatus capable of receiving coins at any time, even while counting down, in order to increase the time remaining and therefore avoid the additional costs required to activate the system again if the service or use of appara... | 09/17/1985 |
| 4470536 | Projection welding process Applicant's invention relates to a process and apparatus for the high speed welding in large quantities of various geometric shaped jump rings to buttons, pendants and other jewelry by utilizing composite jump ring apparatus having first and second projec... | 09/11/1984 |
| 4464231 | Process for fabricating miniature hollow gold spheres A process for fabricating miniature hollow gold spheres comprising the steps of gold plating copper plated miniature balls having centers employing compressible material, piercing small holes in the balls, extracting the compressible materials from the ba... | 08/07/1984 |
| 4376318 | Portable playpen A portable, foldable playpen having rectangular upper and lower frames to which a flexible enclosure is affixed and which folds along its end members when released by folding vertical members to form a compact arrangement.... | 03/15/1983 |
| 4283985 | Drums An improved drum rim for a drum in which a portion of the periphery of the upright section of the rim is either omitted or substantially reduced.... | 08/18/1981 |
| 4223621 | Multihull sailing vessel having means for righting capsized vessels incorporated therein A multihull sailing vessel comprising a plurality of floats having ganged pivotal positioning means incorporated within transverse interconnecting members so that the floats may be rotated around longitudinal axes for righting the vessel whenever it is ca... | 09/23/1980 |
| 4190279 | Clam rake A clam rake employing side skids having raking teeth extending downward therefore preventing clams from escaping from the basket through the sand.... | 02/26/1980 |
| 4178816 | Portable hydrant wrench A portable hydrant wrench for use by one man comprising one or more drive bars having a rectangular cross-section and employing a detachable socket wrench at one of the free ends. A platform is secured to the hydrant to be serviced for positioning the dri... | 12/18/1979 |
| 4148296 | Solar heating apparatus and mounting therefor Solar heating apparatus comprising units that can be assembled on roofs and outer side walls of buildings easily to give the buildings an aesthetic beauty.... | 04/10/1979 |
| 4094031 | Cleaning apparatus for selected small areas of a swimming pool Cleaning apparatus for cleaning selected small areas of a swimming pool comprising hand operated vacuum inducing means, water inlet tubes attached to the vacuum inducing means, and debris retaining and removal means within said tubes.... | 06/13/1978 |
| 4074740 | Combination pocketbook and cushion A combination pocketbook and cushion wherein the cushion can be detached from the pocketbook and sat on during protracted periods of sitting such as when the carrier participates in a bingo game or the like. The pocketbook includes a flap having a snap fa... | 02/21/1978 |
| 4061110 | Apparatus and method for the farming of clams Apparatus and method for the farming of clams comprising heavy trays preferably of concrete, which rest on the bottom land under the water and are stacked apart to allow the water to circulate above each tray. The trays are first filled with sand, in whic... | 12/06/1977 |
| 3988872 | Portable building frame connector A truss-like apparatus to provide structural connection of wooden members in the erection of shelters comprising a complementary pair of tiebeam and kingpost members, fastening means for the truss members, and means for clamping said wooden members when s... | 11/02/1976 |
