Patent US4067697A successfully refreshed from Google Patents.
US4067697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test bar for a vacuum chamber
Assignee: SPECS Gesellschaft fuer Oberflaechenanalytik und Computertechnologie mbH
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Filing: 1976-03-12
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Granted: 1978-01-10
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Expires: 1996-03-12
Abstract
Abstract Device for introducing a specimen into and withdrawing the same from the interior of a chamber sealed from the surrounding environment. The device includes a test bar slidably and sealingly projecting through an opening in the chamber. The test bar has a first length portion which includes a specimen-supporting arrangement and which has a part that is in a sealing relationship with the opening in a first end position of the test bar in which the specimen-supporting arrangement is situated inside the chamber. The test bar further has a second length portion which has a part that is in a sealing relationship with the opening in a second end position of the test bar in which the specimen-supporting arrangement is situated externally of the chamber. A releasable coupling device detachably connects the two length portions of the test bar to one another.
Inventors
- 👤 Hans-Dietrich Polaschegg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:47
CPC Classifications
B; B01; B01L; B01L1/00; B01L1/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
259 words
A device for introducing a specimen into and withdrawing the same from the interior of a chamber sealed from the environment external to the chamber; the device having means defining an opening in the chamber; a test bar projecting through the opening and being slidable with respect thereto; and specimen-receiving means provided on the test bar; the test bar having a first end position in which the specimen-receiving means is situated inside the chamber and a second end position in which the specimen-receiving means is situated externally of the chamber; the test bar being in sealing relationship with the opening in any position of the test bar between and including the two end positions for sealing the inside of the chamber from the environment external to the chamber; the improvement wherein said test bar has a. a first length portion including said specimen-receiving means and including a part being in sealing relationship with said opening in said first end position of said test bar; b. a second length portion including a part being in sealing relationship with said opening in said second end position of said test bar; said first and second length portions being constituted as separate members engaging one another in a parting zone; and c. releasable coupling means for detachably attaching said second length portion to said first length portion and for transmitting to said second test bar portion any external displacement force exerted on said first test bar portion, whereby said first and second test bar portions are displaced as a unit by such forces.
Claim 2
Independent Claim
259 words
A device for introducing a specimen into and withdrawing the same from the interior of a chamber sealed from the environment external to the chamber; the device having means defining an opening in the chamber; a test bar projecting through the opening and being slidable with respect thereto; and specimen-receiving means provided on the test bar; the test bar having a first end position in which the specimen-receiving means is situated inside the chamber and a second end position in which the specimen-receiving means is situated externally of the chamber; the test bar being in sealing relationship with the opening in any position of the test bar between and including the two end positions for sealing the inside of the chamber from the environment external to the chamber; the improvement wherein said test bar has a. a first length portion including said specimen-receiving means and including a part being in sealing relationship with said opening in said first end position of said test bar; b. a second length portion including a part being in sealing relationship with said opening in said second end position of said test bar; said first and second length portions being constituted as separate members engaging one another in a parting zone; and c. releasable coupling means for detachably attaching said second length portion to said first length portion and for transmitting to said second test bar portion any external displacement force exerted on said first test bar portion, whereby said first and second test bar portions are displaced as a unit by such forces.
Claim 3
Dependent Claim
45 words
A device as defined in claim 1, wherein said specimen-receiving means includes a recess provided in said first length portion of said test bar; said parting zone and said recess being situated in an immediately adjoining relationship along the length dimension of said test bar.
Claim 4
Dependent Claim
82 words
A device as defined in claim 1, wherein said releasable coupling means includes a. means defining a bore in one of said length portions, said bore having an axis extending parallel to the length dimension of said test bar; b. a stub portion projecting from the other of said length portions in a direction parallel to the length dimension of said test bar for being received in said bore; and c. removable securing means for retaining said stub portion in said bore.
Claim 5
Dependent Claim
41 words
A device as defined in claim 3, wherein said removable securing means is a pin passing through aligned openings provided in said one length portion in the zone of said bore and in said other length portion in said stub portion.
Claim 6
Dependent Claim
75 words
A device as defined in claim 1, wherein said releasable coupling means includes a. means defining an internally threaded bore in one of said length portions, said bore having an axis extending parallel to the length dimension of said test bar; and b. an externally threaded stub portion projecting from the other of said length portions in a direction parallel to the length dimension of said test bar for being threadedly received in said bore.
Claim 7
Dependent Claim
63 words
A device as defined in claim 1, further comprising a locking pin slidably supported in and by a wall of said chamber in the zone of said opening; and means defining an aperture in said second length portion of said test bar; said aperture being aligned with said locking pin and receiving the same in said second end position of said test bar.
Claim 8
Dependent Claim
20 words
A device as defined in claim 1, wherein at least one of said length portions is at least partially hollow.
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) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |