US4750195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gantry for CT scanner
Assignee: GE Healthcare Japan Corp
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Filing: 1986-01-23
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Granted: 1988-06-07
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Expires: 2006-01-23
Abstract
Abstract A gantry for a CT (computerized tomography) scanner has a tilt adjusting mechanism which is economical to manufacture and is higly reliable and safe. The gantry has main arms 13 and 14 coupled together. A driving cylinder 43 applies a variable force to the arm 14. A gas spring 42 applies a constant force to the other arm 13. The cylinder 43 and the spring 42 cooperate to tilt the arms 13 and 14 without producing twisting motion between the arms.
Inventors
- 👤 Ryo Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:22
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/02; A61B6/03; A61B6/44; A61B6/4429; A61B6/4435; A61B6/4447; A61B6/032; A61B6/035; G; G01; G01N; G01N23/00; G01N23/02; G01N23/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
A gantry for a CT scanner comprising a gantry mechanism for holding an object to be scanned; and means for tilting said gantry mechanism consisting of an external power driven cylinder disposed on one side of said gantry mechanism and attached to said gantry mechanism, and a gas spring disposed on an opposite side of said gantry mechanism and attached to said gantry mechanism, said cylinder applying a tilting force to said gantry mechanism solely and said spring applying a resilient force to said gantry mechanism against said tilting force and gravity force exerted by said gantry mechanism, thereby to prevent twisting during tilting of said gantry mechanism.
Claim 2
Dependent Claim
108 words
A gantry for a CT scanner comprising a gantry mechanism for holding an object to be scanned; and means for tilting said gantry mechanism consisting of an external power driven cylinder disposed on one side of said gantry mechanism and attached to said gantry mechanism, and a gas spring disposed on an opposite side of said gantry mechanism and attached to said gantry mechanism, said cylinder applying a tilting force to said gantry mechanism solely and said spring applying a resilient force to said gantry mechanism against said tilting force and gravity force exerted by said gantry mechanism, thereby to prevent twisting during tilting of said gantry mechanism.
Claim 3
Dependent Claim
18 words
The gantry for a CT scanner of claim 1, wherein the cylinder is driven by an electric motor.
Claim 4
Dependent Claim
15 words
The gantry for a CT scanner of claim 1, wherein the cylinder is driven hydraulically.
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) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |