Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
PatentStorm News
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 |
| 4688719 | Rail clip support A cast rail clip support of the kind used in concrete railway sleepers wherein one portion (17) of the rail clip is held in the rail clip support (19) and a second portion of the clip (16) bears down on the rail flange. The recess (26) of the rail clip su... | 08/25/1987 |
| 4448349 | Rail sleepers with rail clamping devices There is disclosed a rail sleeper which when secured to rails affords rapid disengagement when necessary and is comprised of a metal bar of a U-shaped channel section. At two locations along the length of the bar portions of flanges of the sleeper are rem... | 05/15/1984 |
| 4204660 | Process of railroad tie concrete casting Apparatus for molding rail ties of the type which include one or more fastening devices embedded in the concrete of the type having a shoe plate which rests on the tie and a projecting tab part, the mold having plates, which are preferably removable inser... | 05/27/1980 |
| 4106694 | Prefabricated rail base unit consisting of a plurality of projections and a single continuous slab A railroad bed assembly for supporting thereon metallic railroad tracks is formed with a base structure which consists essentially of reinforced concrete made as prefabricated blocks with the base structure including a slab section adapted to be installed... | 08/15/1978 |
| 4106696 | Sleeper of steel or similar material A sleeper for receiving and securing a pair of railway rails has openings for receiving the rails for screw-less mounting. Either one or both flanges of the rail foot is secured in the opening by cooperation with a lug of the sleeper. The lug or lugs may ... | 08/15/1978 |
| 4061270 | Steel tie insulating saddle A unitized insulating element for use with a steel cross tie is provided. The insulating element is operative to electrically insulate the rail from the steel tie, from retaining elements associated with the tie which prevent lateral movement of the rail ... | 12/06/1977 |
