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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US Patent 5256180 - Apparatus for production of hollow glass microspheres
US Patent Issued on October 26, 1993
Estimated Patent Expiration Date:
January 29, 2013Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
January 29, 2013Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractProcesses and apparatus for the production of hollow microspheres by thermal expansion of glass particles including the thermal treatment of extremely small glass particles whose dimensions are less than 50 micrometers and, preferably, less than 35 micrometers or even 20 micrometers, which include a fluidizing agent. This technique makes possible the production of extremely small glass microspheres under satisfactory yield conditions. Also, the hollow microsphere products produced by these processes and apparatus.Other References
| InventorsAssigneeApplicationNo. 012966 filed on 01/29/1993US Classes:65/142, PARTICULATE BEAD OR BALL MAKING APPARATUS (E.G., PIN HEADING)65/21.4, Hollow or porous particle65/22With pore forming in situField of Search65/142, PARTICULATE BEAD OR BALL MAKING APPARATUS (E.G., PIN HEADING)65/21.4, Hollow or porous particle65/22With pore forming in situExaminersPrimary: Lindsay, Robert L.Attorney, Agent or FirmUS Patent References2221709, 2911669, 2947115, 3061495, 3230064, 3323888, 3365315, 3458332, 3495961, 3573018, 3597176, 3656921, 3838998, 4017290, Method and apparatus for making uniform pellets for fusion reactorsIssued on: 04/12/1977 Inventor: Budrick , et al.4059423, Process for the preparation of expansible beads Issued on: 11/22/1977 Inventor: De Vos , et al.4391646, Glass bubbles of increased collapse strength Issued on: 07/05/1983 Inventor: Howell4459145, Fabrication of glass microspheres with conducting surfaces Issued on: 07/10/1984 Inventor: Elsholz4475936, Apparatus for the heat processing of particulate materials Issued on: 10/09/1984 Inventor: Aston , et al.4487620, Method and apparatus for manufacturing rounded vitreous beads Issued on: 12/11/1984 Inventor: Neusy4542066, Modifying glass bead surfaces Issued on: 09/17/1985 Inventor: Delzant4547233Gas-filled glass beads and method of making Issued on: 10/15/1985 Inventor: Delzant Foreign Patent References
International ClassC03B 019/10Foreign Application Priority Data1984-06-21 FR |
