US3892125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for use in measurement of thermal constant of materials
Assignee: Sanki Engineering Co Ltd
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Filing: 1974-06-07
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Granted: 1975-07-01
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Expires: 1994-06-07
Abstract
Abstract An apparatus for use in measurement of the thermal constant of materials which essentially comprises a testpiece cell and a detector circuit. The testpiece cell includes a holder for holding a sample material to be tested. The sample material holder is designed such that the sample material placed on a receptacle in spaced relation to the body of the receptable is sandwitched between the receptacle and a pair of mutually 180* spaced finger members through a ring-shaped retainer. The pressure required to saidwitch the sample material depends on a weight acting on a spindle member supporting the receptacle. The testpiece cell can be used under either reduced or atmospheric pressure with the sample material in either of the heated, cooled and normal or ordinary state.
Inventors
- 👤 Yoshiaki Nunogaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:32
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/18
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
347 words
An apparatus useable in measurement of a temperature transient characteristic of any of such materials as metals, alloys, synthetic and natural resins, ceramics and others, which comprises a source of light which emits a beam of light of relatively high temperature for a predetermined period of time; a testpiece cell positioned below said light source in alignment with a path of travel of said light beam, said cell including a base plate and an enclosure for defining a closed cell chamber, said enclosure having a light entrance opening closed by a transparent shield, said cell further including a support table rigidly supported above said base plate within said closed cell chamber, a first support rod having a lower end situated within a space between said support table and said base plate and substantially vertically extending in alignment with said light entrance opening, means for supporting said first support rod for up and down movement, a lever means pivotally supported within said space between said support table and said base plate and having one end pivotally connected to the lower end of said support rod, the other end of which is adapted to receive an external forCe, a receptacle adapted to support a sample of the material of a predetermined size thereon and carried by said first support rod at the other, upper end thereof, at least one pair of clamp finger members 180* spaced from each other about the lingitudinal axis of said support rod and being cooperative with said receptacle for, so long as the external force is continuously applied to that end of said lever means, clamping the sample material between said receptacle and said finger means under pressure determined by said external force while said support rod is upwardly biased, said sample material on said receptacle being in alignment with the path of travel of said light beam; and means for detecting variation of the initial temperature of said sample material which is caused by application of the light beam to said sample material held in position by said finger members and said receptacle.
Claim 2
Independent Claim
347 words
An apparatus useable in measurement of a temperature transient characteristic of any of such materials as metals, alloys, synthetic and natural resins, ceramics and others, which comprises a source of light which emits a beam of light of relatively high temperature for a predetermined period of time; a testpiece cell positioned below said light source in alignment with a path of travel of said light beam, said cell including a base plate and an enclosure for defining a closed cell chamber, said enclosure having a light entrance opening closed by a transparent shield, said cell further including a support table rigidly supported above said base plate within said closed cell chamber, a first support rod having a lower end situated within a space between said support table and said base plate and substantially vertically extending in alignment with said light entrance opening, means for supporting said first support rod for up and down movement, a lever means pivotally supported within said space between said support table and said base plate and having one end pivotally connected to the lower end of said support rod, the other end of which is adapted to receive an external forCe, a receptacle adapted to support a sample of the material of a predetermined size thereon and carried by said first support rod at the other, upper end thereof, at least one pair of clamp finger members 180* spaced from each other about the lingitudinal axis of said support rod and being cooperative with said receptacle for, so long as the external force is continuously applied to that end of said lever means, clamping the sample material between said receptacle and said finger means under pressure determined by said external force while said support rod is upwardly biased, said sample material on said receptacle being in alignment with the path of travel of said light beam; and means for detecting variation of the initial temperature of said sample material which is caused by application of the light beam to said sample material held in position by said finger members and said receptacle.
Claim 3
Dependent Claim
68 words
An apparatus as claimed in claim 1, wherein said receptacle is composed of a cylindrical body adapted to be removably mounted on said first support rod and a support having one end integrally formed with said cylindrical body and the other end formed with at least three upwardly tapered members, said sample material when mounted on said receptacle resting on the respective tips of said upwardly tapered members.
Claim 4
Dependent Claim
84 words
An apparatus as claimed in claim 2, further comprising a retainer ring removably used for avoiding the sample material from being warped or deformed which may occur if said sample material receives a heat energy, said retainer ring being situated between said finger members and said receptacle with said sample material sandwitched between it and the respective tips of said upwardly tapered members on said support of said receptacle so long as the external force is applied to that end of said support rod.
Claim 5
Dependent Claim
53 words
An apparatus as claimed in claim 2, further comprising a vertically extending second support rod having a lower end situated within the space between said support table and said base plate and pivotally connected to the other end of said lower means, the other end of which is adapted to receive a weight.
Claim 6
Dependent Claim
129 words
An apparatus as claimed in claim 1, further comprising passage means for communicating the closed cell chamber to a source of cooling medium for, when said cooling medium is supplied into said closed cell chamber, cooling the sample material and exhaust passage means and a valve means, said exhaust passage means being communicated between said closed cell chamber and said valve means, said valve means being in turn communicated with the atmosphere and a source of vacuum, said valve means being adjustable to permit the closed cell chamber to communicate with the atmosphere when said cooling medium is supplied into said closed cell chamber and to permit the closed cell chamber to communicate with the vacuum source when the closed cell chamber is to be held under substantial vacuum.
Claim 7
Dependent Claim
42 words
An apparatus as claimed in claim 1, further comprising a heating device of substantially cylindrical shape adapted to be removably supported above the support table in alignment with the longitudinal axis of the first support rod so as to encircle said receptacle.
Claim 8
Dependent Claim
25 words
An apparatus as claimed in claim 6, further comprising at least one partition plate supported in position between said heating device and said support table.
Claim 9
Dependent Claim
25 words
An apparatus as claimed in claim 7, further comprising at least one cylindrical partition panel supported above said partition plate and encircling said heating device.
Claim 10
Independent Claim
458 words
An apparatus useable in measurement of a temperature transient characteristic of any of such materials as metals, alloys, synthetic and natural resins, ceramics and others, which comprises a source of light which emits a beam of light of relatively high temperature for a predetermined period of time; a testpiece cell positioned below said light source in alignment with a path of travel of said light beam, said cell including a base plate and an enclosure for defininG a closed cell chamber, said enclosure having a light entrance opening closed by a transparent shield, said cell further including a support table rigidly supported above said base plate within said closed cell chamber, a first support rod having a lower end situated within a space between said support table and said base plate and substantially vertically extending in alignment with said light entrance opening, a second support rod having a lower end situated within said space and vertically extending in substantially parallel to said first support rod, the other, upper end of said second support rod being adapted to receive a weight, a lever means pivotally supported within said space between said support table and said base plate, both end portions of which pivotally support the lower ends of said first and second support rods, respectively, a receptacle adapted to support a sample of the material of a predetermined size thereon and removably carried by said first support rod at the other, upper end thereof, separate means for supporting said first and second support rods for movement in a vertical direction, at least one pair of clamping finger members 180* spaced from each other about the lingitudinal axis of said first support rod and being cooperative with said receptacle for, so long as a downwardly acting force of said weight is continuously applied to said lever means and then to said first support rod through said lever means thereby upwardly shifting said first support rod, clamping the sample material between said receptacle and said finger members under pressure determined by said weight, said sample material being at this time in alignment with the path of travel of said light beam, at least one partition plate removably supported above said support table and below said receptacle, a heating device of substantially cylindrical shape for heating the sample material to change the initial temperature of said sample material and adapted to be removably supported above said partition place in alignment with the longitudinal axis of the first support rod so as to encircle said receptacle; and means for detecting variation of the initial temperature of said sample material which is caused by the application of the light beam to said sample material held in position by said finger members and said receptacle.
Claim 11
Independent Claim
458 words
An apparatus useable in measurement of a temperature transient characteristic of any of such materials as metals, alloys, synthetic and natural resins, ceramics and others, which comprises a source of light which emits a beam of light of relatively high temperature for a predetermined period of time; a testpiece cell positioned below said light source in alignment with a path of travel of said light beam, said cell including a base plate and an enclosure for defininG a closed cell chamber, said enclosure having a light entrance opening closed by a transparent shield, said cell further including a support table rigidly supported above said base plate within said closed cell chamber, a first support rod having a lower end situated within a space between said support table and said base plate and substantially vertically extending in alignment with said light entrance opening, a second support rod having a lower end situated within said space and vertically extending in substantially parallel to said first support rod, the other, upper end of said second support rod being adapted to receive a weight, a lever means pivotally supported within said space between said support table and said base plate, both end portions of which pivotally support the lower ends of said first and second support rods, respectively, a receptacle adapted to support a sample of the material of a predetermined size thereon and removably carried by said first support rod at the other, upper end thereof, separate means for supporting said first and second support rods for movement in a vertical direction, at least one pair of clamping finger members 180* spaced from each other about the lingitudinal axis of said first support rod and being cooperative with said receptacle for, so long as a downwardly acting force of said weight is continuously applied to said lever means and then to said first support rod through said lever means thereby upwardly shifting said first support rod, clamping the sample material between said receptacle and said finger members under pressure determined by said weight, said sample material being at this time in alignment with the path of travel of said light beam, at least one partition plate removably supported above said support table and below said receptacle, a heating device of substantially cylindrical shape for heating the sample material to change the initial temperature of said sample material and adapted to be removably supported above said partition place in alignment with the longitudinal axis of the first support rod so as to encircle said receptacle; and means for detecting variation of the initial temperature of said sample material which is caused by the application of the light beam to said sample material held in position by said finger members and said receptacle.
Claim 12
Dependent Claim
87 words
An apparatus as claimed in claim 9, wherein said receptacle comprises a cylindrical body having one end adapted to be removably mounted on said first support rod and a support having one end face integrally formed with the other end of said cylindrical body, the other end face of said support facing towards the light source and formed with at least three equally spaced upwardly tapered members, said sample material when held in position on said receptacle, resting on the respective tips of said upwardly tapered members.
Claim 13
Dependent Claim
15 words
An apparatus as claimed in claim 9, wherein said receptacle is made of ceramic material.
Claim 14
Dependent Claim
69 words
An apparatus as claimed in claim 9, further comprising a retainer ring removably used for avoiding the sample material from being warped or deformed which may occur if said sample material receives a heat energy, said retainer ring being situated between said finger members and said receptacle with said sample material sandwitched between it and the respective tips of said upwardly tapered members on said support of said receptacle.
Claim 15
Dependent Claim
24 words
An apparatus as claimed in claim 9, further comprising a substantially cylindrical partition panel supported above said partition plate and encircling said heating device.
Claim 16
Dependent Claim
129 words
An apparatus as claimed in claim 9, further comprising passage means for communicating the closed cell chamber to a source of cooling medium for, when said cooling medium is supplied into said closed cell chamber, cooling the sample material and exhaust passage means and a valve means, said exhaust passage means being communicated between said closed cell chamber and said valve means, said valve means being in turn cOmmunicated with the atmosphere and a source of vacuum, said valve means being adjustable to permit the closed cell chamber to communicate with the atmosphere when said cooling medium is supplied into said closed cell chamber and to permit the closed cell chamber to communicate with the vacuum source when the closed cell chamber is to be held under substantial vacuum.
Claim 17
Dependent Claim
33 words
An apparatus as claimed in claim 14, further comprising a removable inner enclosure similar in shape to said enclosure, said inner enclosure having an opening in alignment with said opening in said enclosure.
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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |