Patent US4245907A successfully refreshed from Google Patents.
US4245907A
Expired / Lapsed
US
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Disposable blood chamber
Assignee: Leica Microsystems Inc
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Filing: 1979-05-29
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Granted: 1981-01-20
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Expires: 1999-05-29
Abstract
Abstract A two piece disposable blood chamber having registration means and a locking clip to prevent disassembly for sterilization is disclosed.
Inventors
- 👤 Julius S. Rosen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:51
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/03; G01N2021/0346
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
52 words
A disposable blood chamber which comprises complementary molded chamber halves for forming a chamber therebetween when assembled in engagement with each other, registration means for restricting sliding motion between assembled chamber halves, clip means for retaining said chamber halves in assembled engagement and lock means for preventing removal of said slip means.
Claim 2
Dependent Claim
52 words
A disposable blood chamber which comprises complementary molded chamber halves for forming a chamber therebetween when assembled in engagement with each other, registration means for restricting sliding motion between assembled chamber halves, clip means for retaining said chamber halves in assembled engagement and lock means for preventing removal of said slip means.
Claim 3
Dependent Claim
33 words
A disposable blood chamber according to claim 1 wherein a handle member extends from one of said chamber halves and said lock means engages said member to prevent removal of said clip means.
Claim 4
Dependent Claim
24 words
A disposable blood chamber according to claim 2 wherein said lock means protrudes from said clip means and penetrates a recess in said member.
Claim 5
Dependent Claim
26 words
A disposable blood chamber according to claim 2 wherein said lock means includes a pawl extending from said clip means and ratchet teeth in said member.
References Cited (Backward Citations)
US2482650A
Cited
US4126418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |