公开(公告)号：US3413543A

公开(公告)日：1968-11-26

申请号：US45048465

申请日：1965-04-23

Applicant: GEN MOTORS CORP

Inventor： SCHUBRING NORMAN W ,  ALEXANDER MEDUVSKY ,  NOLTA JAMES P ,  DORK RONALD A

IPC: G01R27/26

CPC classification number: G01R27/2623

公开(公告)号：US3652328A

公开(公告)日：1972-03-28

申请号：US3652328D

申请日：1969-09-02

Applicant: GEN MOTORS CORP

Inventor： DORK RONALD A ,  WHITE RONALD E

IPC: B44F1/06 ,  G02B1/10 ,  B32B27/06 ,  B44D5/00

CPC classification number: B44F1/06 ,  G02B1/105 ,  G02B1/14 ,  Y10T428/264 ,  Y10T428/269 ,  Y10T428/31645

Abstract: A composite optical element is disclosed having a synthetic resin substrate and an abrasion resistant surface coating of barium titanate. A polycarbonate resin substrate and an R.F. vacuum sputtered barium titanate protective surface coating provides a particularly tough and abrasion resistant optical element such as a window or windshield.

Abstract translation: 公开了具有合成树脂基材和钛酸钡的耐磨表面涂层的复合光学元件。 聚碳酸酯树脂基材和R.F. 真空溅射的钛酸钡保护表面涂层提供了特别坚硬和耐磨的光学元件，例如窗户或挡风玻璃。

公开(公告)号：US3593047A

公开(公告)日：1971-07-13

申请号：US3593047D

申请日：1970-02-16

Applicant: GEN MOTORS CORP

Inventor： NOLTA JAMES P ,  SCHUBRING NORMAN W ,  DORK RONALD A

IPC: H02N10/00 ,  H02N4/00

CPC classification number: H02N10/00

Abstract: A ferroelectric material having its permittivity dependent on temperature is disposed partially in an electric field between a pair of capacitor plates. A heat source is provided to heat the ferroelectric material just outside the capacitor plates to increase the permittivity above that existing between the capacitor plates so that a force pulls the heated portion into the field. The force is enhanced by providing a liquid of high permittivity between the ferroelectric material and the capacitor plates. By using a liquid having a permittivity between the upper and lower extremes of the ferroelectric material, a force is produced pushing the ferroelectric material, when cooled, out of the field.