US3667127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital micrometer caliper
Assignee: Individual
•
Filing: 1970-06-04
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Granted: 1972-06-06
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Expires: 1990-06-04
Abstract
Abstract Improvements in structure of micrometer calipers of the digital type, designed to prevent ingress of any foreign matter into the interior mechanism of the caliper and to enable the digital counter incorporated to be readily zero-adjusted as required. The component parts of the caliper, particularly of the counter mechanism, can be assembled without particular skill and the caliper service life is substantially extended with reduced maintenance.
Inventors
- 👤 Taisuke Tsugami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:10
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
115 words
A digital micrometer caliper of the type including a frame, a micrometer spindle supported therein, a wheel counter housed within the frame for indicating the position of the spindle relative to the frame, and a drive mechanism connecting the spindle to the counter, the caliper being characterized in that the drive mechanism comprises: a first sleeve located wholely within the housing and surrounding the spindle, the sleeve being restained from longitudinal movement by the housing and having a longitudinal groove on its inner surface; a pin projecting radially outwardly from the spindle and received within the longitudinal groove of the sleeve; and gear means for transmitting the rotating motion of the sleeve to the counter.
Claim 2
Dependent Claim
115 words
A digital micrometer caliper of the type including a frame, a micrometer spindle supported therein, a wheel counter housed within the frame for indicating the position of the spindle relative to the frame, and a drive mechanism connecting the spindle to the counter, the caliper being characterized in that the drive mechanism comprises: a first sleeve located wholely within the housing and surrounding the spindle, the sleeve being restained from longitudinal movement by the housing and having a longitudinal groove on its inner surface; a pin projecting radially outwardly from the spindle and received within the longitudinal groove of the sleeve; and gear means for transmitting the rotating motion of the sleeve to the counter.
Claim 3
Dependent Claim
47 words
The digital micrometer caliper according to claim 1 further including a second sleeve located within the housing and surrounding the first sleeve, means connecting the first and second sleeves for common rotation, and a gear connected to and rotating with the outer sleeve for driving the counter.
Claim 4
Dependent Claim
65 words
The digital micrometer caliper according to claim 2 wherein the second sleeve has a circumferentially extending slot, the connecting means including a screw extending through the slot and threaded into the first sleeve, the first and second sleeves rotating in unison when the screw is tightened and the second sleeve being capable of limited rotation relative to the first sleeve when the screw is loosened.
Claim 5
Dependent Claim
147 words
A digital micrometer caliper with a longitudinally movable and rotatable micrometer spindle positioned in the caliper frame, and a geared sleeve fitted over the micrometer spindle for rotation therewith, the sleeve being axially fixed relative to and housed in the frame, a counter mechanism driven from the sleeve for digital indication of the spindle position, characterized in that the sleeve assembly is made of inner and outer sleeves slidably fitted to each other, of which the inner sleeve has on the inner side an axially extending groove in which a radially projecting pin on the micrometer spindle engages, while the outer sleeve is provided along its periphery with a slot which the head of a radially projecting headed screw screwed into the inner sleeve engages for the releasable connection of the two sleeves and the outer sleeve carries a toothed gear for driving engagement with the counter.
Claim 6
Dependent Claim
147 words
A digital micrometer caliper with a longitudinally movable and rotatable micrometer spindle positioned in the caliper frame, and a geared sleeve fitted over the micrometer spindle for rotation therewith, the sleeve being axially fixed relative to and housed in the frame, a counter mechanism driven from the sleeve for digital indication of the spindle position, characterized in that the sleeve assembly is made of inner and outer sleeves slidably fitted to each other, of which the inner sleeve has on the inner side an axially extending groove in which a radially projecting pin on the micrometer spindle engages, while the outer sleeve is provided along its periphery with a slot which the head of a radially projecting headed screw screwed into the inner sleeve engages for the releasable connection of the two sleeves and the outer sleeve carries a toothed gear for driving engagement with the counter.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |