Browse Prior Art Database

Soft Surface Height Gage

IP.com Disclosure Number: IPCOM000073976D
Original Publication Date: 1971-Feb-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Horton, RC: AUTHOR [+2]

Abstract

The apparatus shown can measure absolute and relative heights of soft surfaces with height gage indicator pressures minimized to provide a high degree of accuracy. The structure of Drawing A employs a surface plate 1 with a plate check 2, a height gage 3 and an angle block 4. A means for viewing the details of the workpiece surface 5, such as a scope 10, is mounted, and a small, electrically conductive probe 6 is affixed to the height gage. A circuit continuity instrument, such as an ohmmeter 7, is wired to the height gage, plate check and angle block, as shown. The work-piece 8 with the soft surface 5 is mounted on angle block 4, with the probing of the surface with contact 6 observed through scope 10. The probe is hen adjusted so that it just makes contact.

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Soft Surface Height Gage

The apparatus shown can measure absolute and relative heights of soft surfaces with height gage indicator pressures minimized to provide a high degree of accuracy. The structure of Drawing A employs a surface plate 1 with a plate check 2, a height gage 3 and an angle block 4. A means for viewing the details of the workpiece surface 5, such as a scope 10, is mounted, and a small, electrically conductive probe 6 is affixed to the height gage. A circuit continuity instrument, such as an ohmmeter 7, is wired to the height gage, plate check and angle block, as shown. The work-piece 8 with the soft surface 5 is mounted on angle block 4, with the probing of the surface with contact 6 observed through scope 10. The probe is hen adjusted so that it just makes contact. The height gage is then moved for example, via slide blocks, not shown) to the plate check
2. The plate check is adjusted so that the calibration surface makes a circuit contact with the probe and the height is then determined. The details of higher and lower areas of the surface workpiece can then be measured and observed. If hard conductive surfaces are to be measured, metal may be used for both the workpiece contact and the plate check contact.

The embodiment shown in Drawing B eliminates the use of height gage 3 and any movement between workpiece and plate check. This device also is capable of making go-no-go checks as well as measurements. When a probe is attached to one of the...