US3656451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat face tape scale indicator
Assignee: Ametek Inc
•
Filing: 1970-05-15
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Granted: 1972-04-18
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Expires: 1990-05-15
Abstract
Abstract An indicator tape is supported by idler pulleys in a flat position in front of a flat viewing window and is attached to a rotatable drum actuated by an amplifying linkage connected to a condition responsive means such as a Bourdon tube or diaphragm means for sensing a condition. The tape may be either endless or may have its other end attached to a spring-loaded return drum. The linkage connection between the bellows and the drum includes a zero adjustment and a range adjustment. A light transmitting plastic block is positioned behind the tape at the viewing window and is provided with cavities in which are mounted lights to illuminate the block and tape.
Inventors
- 👤 Jerry L Raznov
- 👤 Donald E Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:55
CPC Classifications
G; G01; G01D; G01D13/00; G01D13/02; G01D13/04; G01D13/06; G01D11/00; G01D11/28; G01L; G01L19/00; G01L19/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
In a flat-faced scale indicator instrument, the combination of a rotatable drum, indicator tape means connected to said drum for movement therewith, transparent idler pulley means for positioning a portion of said tape means adjacent to a relatively flat viewing window, scale means in said window adjacent to the flat portion of the tape means, condition sensing means, linkage means operatively connecting said sensing means in said rotatable drum so that the drum moves the tape means in response to the sensed condition, and lighting means comprising a block of light transmitting plastic material positioned between said pulley means and behind the flat portion of said tape means, having recess means therein, illumination means within said recess means so that energization of the illumination means will illuminate the plastic block for lighting the tape means and scale to facilitate viewing thereof through the flat viewing window.
Claim 2
Dependent Claim
146 words
In a flat-faced scale indicator instrument, the combination of a rotatable drum, indicator tape means connected to said drum for movement therewith, transparent idler pulley means for positioning a portion of said tape means adjacent to a relatively flat viewing window, scale means in said window adjacent to the flat portion of the tape means, condition sensing means, linkage means operatively connecting said sensing means in said rotatable drum so that the drum moves the tape means in response to the sensed condition, and lighting means comprising a block of light transmitting plastic material positioned between said pulley means and behind the flat portion of said tape means, having recess means therein, illumination means within said recess means so that energization of the illumination means will illuminate the plastic block for lighting the tape means and scale to facilitate viewing thereof through the flat viewing window.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |