Patent US4141940A successfully refreshed from Google Patents.
US4100837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensated measuring device
Assignee: Norte Klessmann and Co KG
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Filing: 1976-12-21
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Granted: 1978-07-18
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Expires: 1996-12-21
Abstract
Abstract A machine tool is provided with a measuring device having two outer steel rods each fixed at one end to the machine casing and each connected at its free end with an aluminium rod of about the same length, the aluminium rods being joined together at their opposite ends which carry an inner steel rod having a free end fixed to which is a measuring detector in the region of the ends of the outer rods.
Inventors
- 👤 Walter Kohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:50
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/0003; Y; Y10; Y10T; Y10T408/00; Y10T408/21; Y10T409/00; Y10T409/30; Y10T409/309576; Y10T409/309744
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
185 words
A thermal compensation measuring device for positioning on an arm between a cutter spindle and frame of a machine tool comprising at least one steel rod, first means fixed to one end of said steel rod and adopted to be connected to said arm for supporting the steel rod in the direction of the arm, at least one aluminum rod, second means fixed to one end of said aluminum rod and to the other end of said steel rod, said second means supporting said aluminum rod parallel to the steel rod with its other end extending toward said one end of the steel rod, a further steel rod, third means fixed to one end of said further steel rod and to the other end of said aluminum rod, said third means supporting said further steel rod to be mutually parallel with the steel and aluminum rods with its other end extending toward said one end of the aluminum rod, and measuring means connected near the other end of said further steel rod for interacting with a stationary point on the arm of the machine tool.
Claim 2
Dependent Claim
185 words
A thermal compensation measuring device for positioning on an arm between a cutter spindle and frame of a machine tool comprising at least one steel rod, first means fixed to one end of said steel rod and adopted to be connected to said arm for supporting the steel rod in the direction of the arm, at least one aluminum rod, second means fixed to one end of said aluminum rod and to the other end of said steel rod, said second means supporting said aluminum rod parallel to the steel rod with its other end extending toward said one end of the steel rod, a further steel rod, third means fixed to one end of said further steel rod and to the other end of said aluminum rod, said third means supporting said further steel rod to be mutually parallel with the steel and aluminum rods with its other end extending toward said one end of the aluminum rod, and measuring means connected near the other end of said further steel rod for interacting with a stationary point on the arm of the machine tool.
Claim 3
Dependent Claim
84 words
The measuring device of claim 1 comprising a second steel rod being fixedly connected to said first and second means and being supported parallel to said one steel rod, a second aluminum rod being fixedly connected to said second and third means and being supported parallel to said one aluminum rod, both of said aluminum rods being substantially the same length as said one and said second steel rods and being located therebetween, and said further steel rod being located between the aluminum rods.
Claim 4
Dependent Claim
20 words
The measuring device according to claim 2 wherein said further steel rod projects beyond said one and second steel rods.
Claim 5
Dependent Claim
42 words
The measuring device of claim 2 wherein said second means comprises a yoke having apertures for slidingly receiving said one and said second steel rods, and said third means comprises a yoke having an aperture for slidingly receiving said further steel rod.
Claim 6
Dependent Claim
19 words
The measuring device according to claim 1 wherein the measuring device is longitudinally displaceable along said further steel rod.
Claim 7
Dependent Claim
14 words
The measuring device according to claim 1 further comprising a casing for said rods.
Claim 8
Dependent Claim
39 words
The measuring device according to claim 1 wherein the steel rods have a coefficient of thermal expansion of 11.5 × 10 -6 , and the aluminium rod has a coefficient of heat expansion of 23.8 × 10 -6 .
Claim 9
Dependent Claim
28 words
The measuring device according to claim 7 wherein the steel rods are of a grade of steel St 37 K and the aluminium rod is of pure aluminium.
Claim 10
Dependent Claim
203 words
A machine tool comprising: A frame; a spindle; an arm extending from said frame for supporting said spindle; a thermal compensation measuring device supported on said arm, said measuring device supported on said arm, said measuring device having at least one steel rod, first means fixed to one end of said steel rod, first means fixed to one end of said steel rod and connected to the arm for supporting the steel rod in the direction of the arm, one aluminum rod, second means fixed to one end of said aluminum rod and to the other end of said steel rod, said second means supporting said aluminum rod parallel to the steel rod with its other end extending toward said one end of the steel rod, a further steel rod, third means fixed to one end of said further steel rod and to the other end of said aluminum rod, said third means supporting said further steel rod to be mutually parallel with the steel and aluminum rods with its other end extending toward said one end of the aluminum rod, and measuring means connected near the other end of said further steel rod for interacting with a stationary point on said arm.
Claim 11
Dependent Claim
203 words
A machine tool comprising: A frame; a spindle; an arm extending from said frame for supporting said spindle; a thermal compensation measuring device supported on said arm, said measuring device supported on said arm, said measuring device having at least one steel rod, first means fixed to one end of said steel rod, first means fixed to one end of said steel rod and connected to the arm for supporting the steel rod in the direction of the arm, one aluminum rod, second means fixed to one end of said aluminum rod and to the other end of said steel rod, said second means supporting said aluminum rod parallel to the steel rod with its other end extending toward said one end of the steel rod, a further steel rod, third means fixed to one end of said further steel rod and to the other end of said aluminum rod, said third means supporting said further steel rod to be mutually parallel with the steel and aluminum rods with its other end extending toward said one end of the aluminum rod, and measuring means connected near the other end of said further steel rod for interacting with a stationary point on said arm.
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) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |