Patent US3968375A successfully refreshed from Google Patents.
US3968375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray cassette holder
Assignee: Varian Medical Systems Inc
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Filing: 1974-12-13
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Granted: 1976-07-06
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Expires: 1994-12-13
Abstract
Abstract An X-ray cassette holder having adjustable track means for slidably receiving a film cassette and positioning it longitudinally, the holder also including automatic clamping means locked in the open position and actuated by insertion of the cassette to close on opposing sides thereof for centering the cassette transversely in the holder.
Inventors
- 👤 Leonard F. Peyser
- 👤 Roger L. Hibbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:10
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G03B42/025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
93 words
A film cassette holder comprising a support member; a pair of substantially parallel, opposing guide tracks operatively disposed on the support member for insertion of a cassette therebetween; a pair of spaced pivotal clamping arms operatively disposed with respect to the guide tracks and suitably spaced apart for closing on opposing sides of the cassette; and cassette positioning means operatively connected to the clamping arms for rotating the arms in respective opposite angular directions to exert substantially equal pressures on opposing sides of the cassette and thus position it transversely in the holder.
Claim 2
Dependent Claim
93 words
A film cassette holder comprising a support member; a pair of substantially parallel, opposing guide tracks operatively disposed on the support member for insertion of a cassette therebetween; a pair of spaced pivotal clamping arms operatively disposed with respect to the guide tracks and suitably spaced apart for closing on opposing sides of the cassette; and cassette positioning means operatively connected to the clamping arms for rotating the arms in respective opposite angular directions to exert substantially equal pressures on opposing sides of the cassette and thus position it transversely in the holder.
Claim 3
Dependent Claim
45 words
A film cassette holder as set forth in claim 1 wherein the cassette positioning means includes a common drive means operatively coupled to both of the clamping arms for rotating the arms in respective opposite angular directions to close on opposing sides of the cassette.
Claim 4
Dependent Claim
40 words
A film cassette holder as set forth in claim 2 wherein the cassette positioning means includes a locking means operatively disposed with respect to the drive means for disabling the drive means when no cassette is installed in the holder.
Claim 5
Dependent Claim
50 words
A film cassette holder as set forth in claim 3 wherein the cassette positioning means includes mechanical sensing means operatively disposed with respect to one of the guide tracks and the locking means for determining sufficient insertion of the cassette and activating the locking means to unlock the driving means.
Claim 6
Dependent Claim
28 words
A film cassette holder as set forth in claim 4 wherein the driving means includes a spring loaded rotatable member operatively coupled to both of the clamping arms.
Claim 7
Dependent Claim
29 words
A film cassette holder as set forth in claim 5 wherein the locking means includes a pivotal latch member operatively disposed for lockingly engaging the spring loaded rotatable member.
Claim 8
Dependent Claim
37 words
A film cassette holder as set forth in claim 6 wherein the sensing means includes a pivotal sensing link operatively disposed adjacent a portion of the latch member and having spaced portions extended into the guide track.
Claim 9
Dependent Claim
37 words
A film cassette holder as set forth in claim 1 and including an electrical sensing means operatively connected to the cassette sensing means for measuring the transverse dimension of the cassette and producing a corresponding electrical signal.
References Cited (Backward Citations)
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Cited
US3801789A
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US3694653A
Cited
US3792283A
Cited
US3771781A
Cited
US3829698A
Cited
US3826922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |