US3866327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable spool and spool system
Assignee: Deaderich and Royster Inc
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Filing: 1973-06-06
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Granted: 1975-02-18
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Expires: 1993-06-06
Abstract
Abstract A linear position encoder including a spool adapted for connection with a rotary transducer and having guide means about its periphery, means for mounting the spool and transducer to one of two rectilinearly, relatively movable members, first and second spaced support means mounted on the other of the two relatively movable members; and a wire tautly held between the first and second spaced support means and looped about the spool within the guide means for converting rectilinear relative motion between the spool and wire to rotary motion of the spool for driving the rotary transducer.
Inventors
- 👤 Elmo J Pacini
- 👤 Alford H Johnson
- 👤 Jr Robert B Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:04
CPC Classifications
B; B23; B23Q; B23Q17/00; B23Q17/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
205 words
A spool system for precisely calibrating the rotary motion of a spool about its axis with relation to relative motion of the spool along a wire looped at least one time about the spool and having two ends, one anchored on either side of the spool comprising a first annular member having external peripheral guide means and having an axially tapered internal bore of hollow conical cross-section; a second plug member having an external axially tapered circumferential surface of substantially the same taper as said internal bore for fitting into and cooperating with said axially tapered internal bore; means for adjusting the depth of penetration of said plug member into said annular member to control the spreading of said annular member by said plug member to precisely control the outer diameter of the annular member; first support means for anchoring said wire at one end and second support means for anchoring said wire at the other end, at least one of said support means including means for displacing one of the anchored ends of said wire relative to the other in the direction parallel to the axis of said spool for accommodating for lateral displacement of the wire caused by its loop about said spool.
Claim 2
Dependent Claim
205 words
A spool system for precisely calibrating the rotary motion of a spool about its axis with relation to relative motion of the spool along a wire looped at least one time about the spool and having two ends, one anchored on either side of the spool comprising a first annular member having external peripheral guide means and having an axially tapered internal bore of hollow conical cross-section; a second plug member having an external axially tapered circumferential surface of substantially the same taper as said internal bore for fitting into and cooperating with said axially tapered internal bore; means for adjusting the depth of penetration of said plug member into said annular member to control the spreading of said annular member by said plug member to precisely control the outer diameter of the annular member; first support means for anchoring said wire at one end and second support means for anchoring said wire at the other end, at least one of said support means including means for displacing one of the anchored ends of said wire relative to the other in the direction parallel to the axis of said spool for accommodating for lateral displacement of the wire caused by its loop about said spool.
Claim 3
Dependent Claim
23 words
The spool system of claim 1 including means, in at least one of said support means, for setting the tension on said wire.
Claim 4
Dependent Claim
259 words
A spool system for precisely calibrating the rotary motion of a spool about its axis with relation to relative motion of the spool along a wire looped at least one time about the spool and having two ends, one anchored on either side of the spool comprising a spool having a first annular member having external peripheral guide means and having an axially tapered internal bore of hollow conical cross-section; a second plug member having an external axially tapered circumferential surface of substantially the same taper as said internal bore for fitting into and cooperating with said axially tApered internal bore; means for adjusting the depth of penetration of said plug member into said annular member to control the spreading of said annular member by said plug member to precisely control the outer diameter of the annular member; first support means for anchoring said wire at one end and second support means for anchoring said wire at the other end, at least one of said support means including means for displacing one of the anchored ends of said wire relative to the other in the direction parallel to the axis of said spool a distance h where h x/D . p + ((n - 1)p) where x is the distance between the two anchored ends of the wire; D is the mean loop diameter of the wire about the spool; p is the pitch of the helix defined by the wire looped about the spool and n is the number of times the wire is looped about the spool.
Claim 5
Dependent Claim
259 words
A spool system for precisely calibrating the rotary motion of a spool about its axis with relation to relative motion of the spool along a wire looped at least one time about the spool and having two ends, one anchored on either side of the spool comprising a spool having a first annular member having external peripheral guide means and having an axially tapered internal bore of hollow conical cross-section; a second plug member having an external axially tapered circumferential surface of substantially the same taper as said internal bore for fitting into and cooperating with said axially tApered internal bore; means for adjusting the depth of penetration of said plug member into said annular member to control the spreading of said annular member by said plug member to precisely control the outer diameter of the annular member; first support means for anchoring said wire at one end and second support means for anchoring said wire at the other end, at least one of said support means including means for displacing one of the anchored ends of said wire relative to the other in the direction parallel to the axis of said spool a distance h where h x/D . p + ((n - 1)p) where x is the distance between the two anchored ends of the wire; D is the mean loop diameter of the wire about the spool; p is the pitch of the helix defined by the wire looped about the spool and n is the number of times the wire is looped about the spool.
Claim 6
Dependent Claim
15 words
The spool system of claim 3 in which said guide means includes a helical thread.
References Cited (Backward Citations)
US701326A
Cited
US707685A
Cited
US965160A
Cited
US1020573A
Cited
US2293730A
Cited
US3025647A
Cited
US3239941A
Cited
US3566477A
Cited
US3611819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |