Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 7392667 | Method and an apparatus for shaping a tubular object made of thermoplastic material The invention relates to a method for shaping a tubular object made of glass or glass ceramics or any other thermoplastic material, comprising the following method steps: the object is heated up to softening; an in... | 07/01/2008 |
| 6640587 | Lubricated glass mold A mold for shaping end portions of glass tubes has first and second mating members which define a contoured bore into which the heated tube fits. Each member has a longitudinal bore from which extend radial bores opening into the interior cavity of the mo... | 11/04/2003 |
| 5788733 | Device for the shaping of glass tubes In a device for shaping glass tubes (32), the shaping tools (3, 4), which are designed as shaping rollers, are mounted on a rotary table (2) that encloses the glass tube (32) and that rotates at a speed that is several times higher than the speed of rotat... | 08/04/1998 |
| 5695539 | Device for the shaping of glass tubes In order to shape the necks of glass tubes (1) on glass processing machines, use is made of a device with two shaping tools, one of which takes the form of a ring (3) surrounding the glass tube (1) and the other shaping tool consisting of a roller (2).... | 12/09/1997 |
| 4385919 | Method of forming a vial blowback cavity A method of forming a blowback cavity in a vial or similar cylindrical article comprises the steps of providing a cylindrical glass preform having a necked region and first forming an open blowback cavity adjacent the necked region and a relatively thin a... | 05/31/1983 |
| 4111677 | Apparatus for drawing glass tubing Method and apparatus for providing a glass tube with a uniform nozzle portion, i.e., one which has a true centerline. The method involves suspending the tube on vertically space suspension points therealong, with the lower of the suspension points being a... | 09/05/1978 |
| 4082531 | Holder for rotating glass body A device is provided for holding and centering a rotating glass body such as a rod or tube. The device includes a tubular tip holder which may be held in a lathe chuck. The device can utilize a variety of centering tips each adapted for a particular confi... | 04/04/1978 |
| 4010022 | Apparatus for making fused silica tubing Tubes of transparent, translucent or opaque fused silica are made by heating a hollow cylindrical blank in a drawing zone, drawing the blank from the zone while maintaining its interior under pressure and rotating same about its longitudinal axis, and cal... | 03/01/1977 |
