US3744135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas spring for transducer on gaging device
Assignee: Landis Tool Co
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Filing: 1971-09-08
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Granted: 1973-07-10
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Expires: 1991-09-08
Abstract
Abstract This disclosure relates to work gaging devices for machine tools in which gas under pressure maintains a sensing member in contact with a workpiece. It also includes a container for the gas having a volume substantially greater than the displacement of the sensing member of the gage so that gas pressure is not affected by movement of the sensing member. The container serves as a junction box for electrical components such as a gage signal amplifier and conductors, as well as the gas. The connection between the junction box and the gaging device is a single conduit for both the electrical conductors and the gas. In order to prevent escape of gas through the electrical conductors and conduits connecting the junction box and an associated machine control panel, the electrical conduits, at this point, include gas-tight plug connections.
Inventors
- 👤 K Gebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:45
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/002; G01B3/008; G01B5/00; G01B5/08; G01B5/20; G01B5/213; Y; Y10; Y10S; Y10S33/00; Y10S33/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
135 words
A gaging device for a machine tool, said gaging device being particularly adapted for gaging workpieces of widely varying diameters and comprising a. a gage member, said gage member including b. a sealed body having an opening in one end thereof, c. a movable work engaging member mounted within said body and projecting therefrom through said opening, d. a yielding member exteriorly of said body hermetically closing said opening and being connected to said body and to said movable member for movement therewith, e. means for maintaining gas under pressure in said body for reaction against said yielding member to urge said movable member out of said body for controlled pressure engagement with a workpiece being gaged, f. and said movable member being returned into said body upon engagement of said member against said workpiece.
Claim 2
Dependent Claim
135 words
A gaging device for a machine tool, said gaging device being particularly adapted for gaging workpieces of widely varying diameters and comprising a. a gage member, said gage member including b. a sealed body having an opening in one end thereof, c. a movable work engaging member mounted within said body and projecting therefrom through said opening, d. a yielding member exteriorly of said body hermetically closing said opening and being connected to said body and to said movable member for movement therewith, e. means for maintaining gas under pressure in said body for reaction against said yielding member to urge said movable member out of said body for controlled pressure engagement with a workpiece being gaged, f. and said movable member being returned into said body upon engagement of said member against said workpiece.
Claim 3
Dependent Claim
31 words
The gaging device of claim 1 wherein said gaging device includes a. a gage transducer mounted within said body, and b. said movable member is a movable element of said transducer.
Claim 4
Dependent Claim
90 words
The gaging device of claim 1 including a. a sealed remote housing, b. an amplifier in said housing, c. coupling means extending between said movable member and said amplifier, d. a gas-tight conduit extending between and coupled to said body and said housing in sealed relation, and e. said housing forming a tank for gas under pressure having a volume substantially greater than the displacement of said movable member so that said movable member may move through its full range without a material change in gas pressure within said body.
Claim 5
Dependent Claim
14 words
The gaging device of claim 3 wherein said coupling means extend through said conduit.
Claim 6
Dependent Claim
72 words
The gaging device of claim 1 wherein said gaging device includes a. a gage transducer mounted within said body, b. said movable member is a movable element of said transducer, c. a gas-tight junction box containing gas under pressure, d. electrical conductors extending from said gage transducer into said junction box, and e. conduit means for carrying both said conductors and said gas under pressure between said junction box and said body.
Claim 7
Dependent Claim
28 words
The gaging device of claim 5 together with a. an electrical amplifier in said junction box, and b. said electrical conductors connecting said gage transducer to said amplifier.
Claim 8
Dependent Claim
60 words
The gaging device of claim 6 together with a. a machine control panel associated with said junction box, and b. a connection between said amplifier and said control panel including a gas-tight plug connector, one part of which is on said junction box and the other part of which is on an electrical connecting member leading to said control panel.
Claim 9
Dependent Claim
120 words
The gaging device of claim 1 including a. a sealed remote housing, b. an amplifier in said housing, c. coupling means extending between said movable member and said amplifier, d. a gas-tight conduit extending between and coupled to said body and said housing in sealed relation, e. said housing forming a tank for gas under pressure having a volume substantially greater than the displacement of said movable member so that said movable member may move through its full range without a material change in gas pressure within said body, f. a primary source of gas under pressure, and g. piping and valving connecting said primary gas source to said housing for controlling the pressure of said gas within said housing.
References Cited (Backward Citations)
US2348643A
Cited
US2603043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |