公开(公告)号：US2925778A

公开(公告)日：1960-02-23

申请号：US64649557

申请日：1957-03-15

Applicant: STEWART WARNER CORP

Inventor： VON NEMETH JOSEF

IPC: F42C15/00 ,  F42C15/24

CPC classification number: F42C15/00 ,  F42C15/24

公开(公告)号：US3322380A

公开(公告)日：1967-05-30

申请号：US39366664

申请日：1964-09-01

Applicant: STEWART WARNER CORP

Inventor： JOE AFFEL JOHN ,  VON NEMETH JOSEF

IPC: G01D11/30

CPC classification number: G01D11/305 ,  Y10T29/53943

公开(公告)号：DE1623849A1

公开(公告)日：1971-04-01

申请号：DE1623849

申请日：1967-09-30

Applicant: STEWART WARNER CORP

Inventor： R BAEZ EDGAR ,  M HEINKE WALTER ,  MILES MARSHALL ,  VON NEMETH JOSEF

IPC: G04B19/30 ,  G01D

Abstract: 1,190,640. Indicating apparatus. STEWARTWARNER CORP. Oct. 17, 1967 [Oct. 17, 1966; May 9, 1967], No. 47262/67. Heading G1J. [Also in Division F4] An instrument such as a tachometer, &c. comprises a transparent dial plate 42 having a layer of translucent material 46 on its back surface and a layer of light transmitting material 50 on its front surface which contrasts with an opaque pointer 34 when a light 26 is turned off and which enables the pointer to be seen in silhouette when the light is turned on. The light source is enclosed in a diffuser 28 and the plate 42 is preferably made of plastics material. The material 46 is preferably white, silver or blue paint and the material 50 is preferably a white plastics overlay secured by adhesive to the plate 42. The overlay has indicia 52 and bands 54, 56 printed on it in black and the area between the bands may be coloured. The whole of the area of the material 50 is uniformly illuminated by light diffusing directly through the materials 46, 50 and by multiple reflections from the rear surface of the plate 42 due to the reflection of light from the bevelled edge 44 of the plate. Several modifications are described of the form of the indicia and the front layer of material 50.