US3910703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring apparatus using the moire fringe concept of measurement
Assignee: Bausch and Lomb Inc
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Filing: 1974-05-28
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Granted: 1975-10-07
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Expires: 1994-05-28
Abstract
Abstract Measuring apparatus using the moire fringe concept of measurement to provide a precise digital numeric indication of displacement between two relatively movable members. The apparatus includes an accurately ruled grating or scale, a transducer head in the form of an index grating supported on a movable carriage and a transducer support housing. The scale is secured in a spar which is preferably mounted to the carriage of a machine tool such as a milling machine. The transducer support housing is mounted to the stationery part or bed of the machine tool and is provided with a cantilever spring element which holds the carriage in direct contact with the scale. In order to facilitate mounting of the measuring apparatus, a temporary alignment bracket is secured to both the spar and the transducer support housing.
Inventors
- 👤 Richard H Burns
- 👤 Donald R Hosack
- 👤 Helmut Welker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:10
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/08; B23Q11/085; G; G01; G01D; G01D5/00; G01D5/26; G01D5/32; G01D5/34; G01D5/347
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
117 words
In apparatus, securable to first and second relatively movable members for use in measuring the relative displacement therebetween, including a scale, means for supporting said scale, a transducer means including a carriage and an index grating, said carriage including scale engaging means, transducer support means, and means secured between said transducer means and said carriage for urging said scale engaging means into engagement with said scale, wherein the improvement comprises: means for rigidly coupling said transducer support means to said scale supporting means to position said transducer support means relative to said scale supporting means until said scale supporting means is secured to said first member and said transducer support means is secured to said second member.
Claim 2
Dependent Claim
117 words
In apparatus, securable to first and second relatively movable members for use in measuring the relative displacement therebetween, including a scale, means for supporting said scale, a transducer means including a carriage and an index grating, said carriage including scale engaging means, transducer support means, and means secured between said transducer means and said carriage for urging said scale engaging means into engagement with said scale, wherein the improvement comprises: means for rigidly coupling said transducer support means to said scale supporting means to position said transducer support means relative to said scale supporting means until said scale supporting means is secured to said first member and said transducer support means is secured to said second member.
Claim 3
Dependent Claim
40 words
The combination as set forth in claim 1 wherein said transducer support means includes a base portion and an upstanding portion, said means for urging being secured to said upstanding portion, said base portion being securable to said second member.
Claim 4
Dependent Claim
48 words
The apparatus as set forth in claim 2 wherein said base portion includes surface engaging means, said surface engaging means being adjustable relative to said base portion and engageable with said second member to thereby insure correct spacing and alignment between said base portion and said second member.
Claim 5
Dependent Claim
16 words
The apparatus as set forth in claim 3 wherein said surface engagement means comprise jack screws.
Claim 6
Dependent Claim
46 words
The apparatus as set forth in claim 3 wherein said base portion includes a cavity and said upstanding portion has a through aperture opening into said cavity, said aperture serving as a conduit for wires from said transducer means, said cavity serving as a splice box.
Claim 7
Dependent Claim
54 words
The apparatus as set forth in claim 1 wherein said coupling means includes flat head machine screws and wherein one of said coupling means and said transducer support means includes tapered openings which cooperate with the heads of said flat head machine screws to correctly position said transducer support housing relative to said scale.
Claim 8
Dependent Claim
14 words
The apparatus as set forth in claim 6 wherein said coupling means includes bosses.
Claim 9
Independent Claim
119 words
A method of attaching displacement measuring apparatus to first and second relatively movable members, said apparatus including a scale, means for holding said scale, transducer means, support means securable to said second member and means, secured between said support means and said transducer means, for maintaining said transducer means in engagement with said scale, said apparatus also including means to position said support means relative to said scale holding means until said apparatus has been attached to said first and second members, said method comprising: a. attaching said scale holding means to said first member; b. attaching said support means to said second member; and c. disengaging said positioning means from said scale holding means and said support means.
Claim 10
Independent Claim
119 words
A method of attaching displacement measuring apparatus to first and second relatively movable members, said apparatus including a scale, means for holding said scale, transducer means, support means securable to said second member and means, secured between said support means and said transducer means, for maintaining said transducer means in engagement with said scale, said apparatus also including means to position said support means relative to said scale holding means until said apparatus has been attached to said first and second members, said method comprising: a. attaching said scale holding means to said first member; b. attaching said support means to said second member; and c. disengaging said positioning means from said scale holding means and said support means.
Claim 11
Independent Claim
112 words
A method of attaching displacement measuring apparatus to first and second relatively movable members with the aid of alignment means, said apparatus including a scale, means for holding said scale, transducer means, transducer support means, and biasing means secured between said transducer support means and said transducer means for maintaining said transducer means in engagement with said scale, said method comprising: a. coupling said scale holding means to said transducer support means with said alignment means; b. attaching said scale holding means to said first member; c. attaching said transducer support means to said second member; and d. disengaging said alignment means from said scale holding means and said transducer support means.
Claim 12
Independent Claim
112 words
A method of attaching displacement measuring apparatus to first and second relatively movable members with the aid of alignment means, said apparatus including a scale, means for holding said scale, transducer means, transducer support means, and biasing means secured between said transducer support means and said transducer means for maintaining said transducer means in engagement with said scale, said method comprising: a. coupling said scale holding means to said transducer support means with said alignment means; b. attaching said scale holding means to said first member; c. attaching said transducer support means to said second member; and d. disengaging said alignment means from said scale holding means and said transducer support means.
Claim 13
Independent Claim
134 words
A method of attaching displacement measuring apparatus to first and second relatively movable members with the aid of alignment means, said apparatus including a scale, means for holding said scale, transducer means, transducer support means, and biasing means secured between said transducer support means and said transducer means for maintaining said transducer means in engagement with said scale, said transducer support means including adjustable surface engagement means, said method comprising: a. coupling said scale holding means to said transducer support means with said alignment means; b. attaching said scale holding means to said first member; c. moving said adjustable surface engagement means into engagement with said second member; d. attaching said transducer support means to said second member; and e. disengaging said alignment means from said scale holding means and said transducer support means.
Claim 14
Independent Claim
134 words
A method of attaching displacement measuring apparatus to first and second relatively movable members with the aid of alignment means, said apparatus including a scale, means for holding said scale, transducer means, transducer support means, and biasing means secured between said transducer support means and said transducer means for maintaining said transducer means in engagement with said scale, said transducer support means including adjustable surface engagement means, said method comprising: a. coupling said scale holding means to said transducer support means with said alignment means; b. attaching said scale holding means to said first member; c. moving said adjustable surface engagement means into engagement with said second member; d. attaching said transducer support means to said second member; and e. disengaging said alignment means from said scale holding means and said transducer support means.
References Cited (Backward Citations)
US3362772A
Cited
US3579836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |