Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7735235 | Marking and fastening device and method of using same A fastening device is provided and a method of using same is provided. The fastening device includes a male member having a having a projection on a first side and a securing means on a second opposing side. A female member configured to receive the male member deta... | 06/15/2010 |
| 7213680 | Acoustical wall covering assembly pleated and secured in situ for covering walls in movie theatres and method An acoustical wall covering assembly (10) with pleats (11) formed and attached in situ to a trim member for covering a wall of a movie theatre, in which a panel (22) of an acoustical wall covering attaches to a pleating member (22) having... | 05/08/2007 |
| 6918190 | Mechanism for simultaneously adjusting the step support angles of a straight staircase A mechanism for simultaneous angle adjustment of support elements (4), particularly for setting up a mold structure for the steps of a straight staircase, has a casing (9) in which at least two interdependent shafts (6) are arranged. Each of the... | 07/19/2005 |
| 6321459 | Device for assisting a user to draw a topographical contour map A device for use in plotting equal spacings over a distance includes a frame comprising opposed first and second pairs of frame members with each frame member having opposed ends and pivotal connecting means for pivotally connecting adjacent frame members... | 11/27/2001 |
| 5174040 | Multi-leg caliper with heart scale A multi-leg caliper with heart scale allowing analysis over a variable plurality of heart beats for arrhythmia is taught. Briefly stated, a plurality of parallel members are pivotally connected to a second set of parallel members thereby forming a lattice... | 12/29/1992 |
| 4936022 | Multi-leg caliper with heart scale A multi-leg caliper with heart scale allowing analysis over a variable plurality of heart beats for arrhythmia is taught. Briefly stated, a plurality of parallel members are pivotally connected to a second set of parallel members thereby forming a lattice... | 06/26/1990 |
| 4769920 | Apparatus for guiding a router to cut grooves for stair treads and the like Apparatus for cutting a plurality of generally parallel channels such as the steps and risers in a stringer for a staircase or the shelves in a book case which includes an elongated first, second, third and fourth members. Each member has first and second... | 09/13/1988 |
| 4599802 | Draftsman's dimensional divider A device for use in dividing a line into a predetermined number of equal parts. The device consists of a number of identical elongated links whose ends and centers are hingedly connected to form a set of extendable lazy tongs with preferably sixteen ident... | 07/15/1986 |
| 4419828 | Apparatus for establishing the junction contour for intersecting pipes A simulator in the form of a tubular pantograph mechanism is adjustable in diameter, and has circumferentially spaced elongated rods mounted on the inner wall in parallel relation with the axis. These rods define the inner diameter of the simulator and wh... | 12/13/1983 |
| 4418478 | Drapery pleat and fold line marking machine A machine is shown for marking the spaces for forming the pleats along the top edge of a wall-hung drapery panel and simultaneously marking a fold point on the rear surface of the hem of the pleated drapery panel. The machine includes a workbench with a p... | 12/06/1983 |
| 4135734 | Ski binding Two retaining elements are arranged to slide upon a structure designed to be attached temporarily to a boot. A rotating part, to which are hinged two links, the other ends of which are hinged to the retaining elements, makes it possible to adjust the dist... | 01/23/1979 |
| 4041611 | Means of measuring a puppy's tail for surgically docking the same A puppy tail docking gauge comprising a lazy-tong device comprised of a plurality of tong elements pivotally secured together to form pivotally secured tong sections, with the tong sections pivotally secured together by hollow rivets and a guide bar secur... | 08/16/1977 |
