Bizarre Patents
Pillow with retractable umbrella
A pillow assembly having a supporting assembly and a retractable umbrella assembly that is easily transportable and allows a user to support his/her head while covering their face from sunlight.
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| Number | Title | Issue Date |
| 4954016 | Sewer pipe relining method The present invention discloses apparatus and methods for relining sewer mains without excavation. The sewer main is accurately measured and pre-selected short sections of reliner pipe are inserted one at a time. Visual equipment and manipulative apparatu... | 09/04/1990 |
| 4943463 | Large dimensional thermoplastic articles Thermoplastic articles such as fenders, of large cross-sectional dimensions, may be made by extrusion without shrinkage voids by extruding a first stream of theremoplastic as a hollow profile, and extruding a second stream of molten thermoplastic by a sec... | 07/24/1990 |
| 4729807 | Method of fabricating composite products The invention provides a method of forming composite products of two incompatible plastics or other materials by extruding a first stream of plastic through a die to form a profile and coextruding another stream on the surface thereof which is fusible wit... | 03/08/1988 |
| 4583770 | Pipe joint seal A pipe joint seal comprises an insert (10) adapted to be mounted around the joint and the pipe sections adjacent thereto and having in its inner side dovetailed grooves (11) or the like which are filled with a plastic sealing compound. The insert (10) can... | 04/22/1986 |
| 4488918 | Non-slip plastic film This invention discloses a plastic film having a non-slip surface comprising spaced random patterns of rigid peaks and ridges formed by a second thermo-plastic layer coextruded with and bonded to the plastic film and rupturing the second layer during expa... | 12/18/1984 |
| 4321292 | Method of manufacturing shrinkable sleeves from a cross-linking plastics material The present invention discloses an improved heat shrinkable sleeve and method for making same in which an extruded sleeve piece is heated above the cross-linking temperature of the plastics material by immersing it in a heated bath while supporting its sh... | 03/23/1982 |
