Patent US3629945A successfully refreshed from Google Patents.
US3629945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical gage
Assignee: ACU-RITE Inc
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Filing: 1969-10-06
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Granted: 1971-12-28
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Expires: 1989-10-06
Abstract
Abstract A gage for linear measurement of a workpiece comprises an optical assembly for viewing a linear scale placed for reading upon the workpiece, both the scale and the observed portion of the workpiece being at the same focal length. The optical assembly is slidable either by manual operation or by a control mechanism including a control shaft having spiral grooves which which are diminutive in depth which journal within, for example a thermoplastic bushing housed by the optical assembly. Rotation of the control shaft about its axis causes the optical assembly to traverse along the length of the scale. The optical assembly is also slidably translatable.
Inventors
- 👤 John C Liuzzo
- 👤 Helmut Welker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:38
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/02; G01B3/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
98 words
An instrument for measuring a workpiece, comprising: a base; a measuring scale carried by said base, said scale disposed for contacting the workpiece; and an optical assembly disposed for viewing the scale and carried by said base, the optical assembly slidably engaging a shaft carried by said base, said shaft being rotatably carried by said base and engaging said optical assembly to cause said assembly to move in a plane parallel to the scale when said shaft is rotated, said shaft being spirally grooved and engaging a uniformly formed surface of a bushing carried within said optical assembly.
Claim 2
Dependent Claim
98 words
An instrument for measuring a workpiece, comprising: a base; a measuring scale carried by said base, said scale disposed for contacting the workpiece; and an optical assembly disposed for viewing the scale and carried by said base, the optical assembly slidably engaging a shaft carried by said base, said shaft being rotatably carried by said base and engaging said optical assembly to cause said assembly to move in a plane parallel to the scale when said shaft is rotated, said shaft being spirally grooved and engaging a uniformly formed surface of a bushing carried within said optical assembly.
Claim 3
Dependent Claim
14 words
The instrument as defined in claim 1, wherein the groove is of diminutive depth.
Claim 4
Dependent Claim
33 words
The instrument as defined in claim 1, 1 wherein the shaft has a plurality of grooves and said grooves are formed by abrading the shaft surface with a fine grit abrasive sheet material.
Claim 5
Dependent Claim
28 words
The instrument as defined in claim 2, wherein engagement between the uniform surface and the shaft comprises the uniform surface engaging the groove and the juxtaposed cylindrical surface.
Claim 6
Dependent Claim
16 words
The instrument as defined in claim 4, wherein the uniform surface is formed of thermoplastic material.
Claim 7
Dependent Claim
118 words
An instrument for measuring a workpiece, comprising: a base having two integral spaced apart supports extending transversely therefrom; a measuring scale carried by said base and supported to expand and contract independently of said base; a support shaft disposed parallel to said scale, said shaft carried by said supports; an optical assembly disposed for viewing the scale and slidably carried by the support shaft; and a control shaft disposed parallel to said scale, said control shaft rotatably carried by said support being spirally grooved and rotatably engaging a substantially uniform surface of a bushing affixed to said optical assembly, said assembly being caused to move in a plane parallel to the scale when said control shaft is rotated.
Claim 8
Dependent Claim
118 words
An instrument for measuring a workpiece, comprising: a base having two integral spaced apart supports extending transversely therefrom; a measuring scale carried by said base and supported to expand and contract independently of said base; a support shaft disposed parallel to said scale, said shaft carried by said supports; an optical assembly disposed for viewing the scale and slidably carried by the support shaft; and a control shaft disposed parallel to said scale, said control shaft rotatably carried by said support being spirally grooved and rotatably engaging a substantially uniform surface of a bushing affixed to said optical assembly, said assembly being caused to move in a plane parallel to the scale when said control shaft is rotated.
Claim 9
Dependent Claim
49 words
The instrument as defined in claim 6, wherein the support and control shafts are disposed on one side of an imaginary plane, formed by the scale and the optical axis of the optical assembly, extending transversely thereto, to thereby permit ambient light to traverse unobstructively to illuminate the scale.
Claim 10
Dependent Claim
151 words
A measuring instrument, comprising: a. a scale having marks formed on a transparent member, said scale being adapted to be brought substantially in contact with an object to be measured; b. optical apparatus adapted to form an image of a portion of said marks; c. guide means connected to said scale and having a guiding surface substantially equidistant therefrom; d. mounting means for said optical apparatus having means cooperative with said guide means for holding said optical apparatus in proper position for forming an image of said marks on said scale; and e. rotatory means cooperative with said mounting means for imparting motion to said optical apparatus along said guide means, said rotatory means and said mounting means each comprising an interfacing member cooperative with the other, one of said interfacing members having a smooth, uniform resilient surface, and the other having a nonresilient surface with fine, slanted grooves formed therein.
Claim 11
Dependent Claim
151 words
A measuring instrument, comprising: a. a scale having marks formed on a transparent member, said scale being adapted to be brought substantially in contact with an object to be measured; b. optical apparatus adapted to form an image of a portion of said marks; c. guide means connected to said scale and having a guiding surface substantially equidistant therefrom; d. mounting means for said optical apparatus having means cooperative with said guide means for holding said optical apparatus in proper position for forming an image of said marks on said scale; and e. rotatory means cooperative with said mounting means for imparting motion to said optical apparatus along said guide means, said rotatory means and said mounting means each comprising an interfacing member cooperative with the other, one of said interfacing members having a smooth, uniform resilient surface, and the other having a nonresilient surface with fine, slanted grooves formed therein.
Claim 12
Dependent Claim
14 words
The measuring instrument of claim 8, further comprising means for urging said members together.
References Cited (Backward Citations)
US2915826A
Cited
US2143241A
Cited
US2237515A
Cited
CH328475A
Cited
US3163940A
Cited
US3287810A
Cited
US3487547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |