Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 7331874 | Method for producing circular washer Circular washers are formed by the following steps: at least two through holes are provided in the middle of a belt of material, which are also used for positioning and advancing the belt; a residual slot is formed between every two adjacent through holes, thereby f... | 02/19/2008 |
| 7168902 | Wedge cam lock washer for threaded fasteners A locking device for a threaded fastener comprises a pair of washers each having a plurality of wedge cam sets that include a base-cam and a raised tooth-cam. When the washers are mated together in use, the wedge cam sets of each washer are placed into confronting e... | 01/30/2007 |
| 6966735 | Screw mechanism In a screw locking assembly a pair of washers having inclined surfaces are interposed between a screw member on a tightening side and a member to be tightened, with the inclined surfaces being mutually contacted. These inclined surfaces circle around once in spiral ... | 11/22/2005 |
| 6904681 | Method for fabricating a driving and locking mechanism The present invention is a method for fabricating a driving and locking mechanism. The present invention provides a bearing device having a first end and a second end, where the first end has a curvilinear shape. The present invention also provides a strip of metal ... | 06/14/2005 |
| 5852859 | Method and apparatus for making piston rings A method and apparatus for making non-circular piston rings which will precisely sealably conform to the cylinder wall of an internal combustion engine. In accordance with the method of the invention a metal strip of special cross-sectional configuration ... | 12/29/1998 |
| 5809820 | Spring washer and method for making the same A spring washer improves resistance to loosening of fasteners tightened thereon. The spring washer is stronger than prior art devices. On the upper and lower surfaces of the spring washer, approximately 1/5-1/4 of the width inward from the outer perimeter... | 09/22/1998 |
| 5755824 | Apparatus and method for manufacturing lock washers An assortment of lock washers is produced from a method including the steps of (a) providing a plurality of blanks formed of generally planar resilient metal, some of the blanks having a different configuration from other of the blanks, each of the blanks... | 05/26/1998 |
| 5659876 | Method of producing washer having boss A method for producing a washer having a boss comprises the following steps in the sequence set forth: (a) sprinkling powder of a bearing alloy onto a backing metal made of an iron-based alloy to form a composite material; (b) sintering the composite mate... | 08/19/1997 |
| 4549325 | Method of making internal nut for adjusting the tension of a coil spring A nut for adjusting the tension of a coil spring is formed from a flat strip of material. The strip is notched to form a disc having a generally circular rim with at least one notch in the rim, and the rim is formed to provide a portion of one turn of a h... | 10/29/1985 |
| 4538313 | Method of forming a joined pair of wedge-action lock washers A method of forming a joined pair fo wedge-action-type lock washers, wherein each lock washer has a cam surface and an oppositely disposed friction surface, the pair of washers being arranged so that their cam surfaces are installed in a juxtaposed face-t... | 09/03/1985 |
| 4310939 | Method of producing semicircular washers having a projection to prevent rotation In producing a semicircular washer having a projection to prevent rotation formed thereon, a blank material in the form of a flat bar is forced to pass a roll caliber between upper and lower forming rolls arranged in a pair and bent on and along one of th... | 01/19/1982 |
| 4302136 | Helical conical spring lock-washer and method of formation thereof A helical conical spring lock-washer includes a lock-washer body having formed on one surface thereof a plurality of triangular pyramid-shaped depressions. Each of the depressions provides a triangular opening formed on the respective surface of the lock-... | 11/24/1981 |
| 4285084 | Method and apparatus for making lock washers A method and apparatus for making split lock washers consists of an automated machine wherein the diameter and gap of a lock washer can be accurately controlled. The apparatus includes a drive mechanism for driving the cutter and a transmission unit drive... | 08/25/1981 |
| 4256010 | Beveled retaining ring and method for constructing the same A split beveled retaining ring and method for constructing the same is characterized by a beveled groove seating flange being formed by bending the radially inner or outer edge portion of a split ring body at an angle to the plane of the ring body. The pa... | 03/17/1981 |
| 3988796 | Method of making toothed lock washers A method of making toothed lock washers from sheet material wherein the lock washer bodies are blanked from the sheet material with adjacent outline configurations of the lock washers in close proximity within the sheet material, whereby the unused portio... | 11/02/1976 |
