US3934151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chopper assembly for x-ray machine
Assignee: Individual
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Filing: 1974-08-14
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Granted: 1976-01-20
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Expires: 1994-08-14
Abstract
Abstract A chopper assembly or shutter apparatus is disclosed for X-ray machines for controlling a chopper or shutter for selectively exposing the areas of a patient's body for obtaining X-ray photographs.
Inventors
- 👤 Ralph A. Stowe
- 👤 Joseph W. Howe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:26
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/02; G21K1/04; G21K1/043; A; A61; A61B; A61B6/00; A61B6/06; A61B6/50; A61B6/505
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
136 words
An assembly for use in operating conjunction with an X-ray machine for obtaining X-ray photographs of a patient, a chopper subassembly comprising a frame mountable between the source of X-ray of the machine and the patient, said frame including an opening therein for permitting the X-rays to pass therethrough, at least two vertically movable chopper plates each slidably mounted for selectively covering a portion of said opening, said chopper plates movable downwardly by gravity, movable stop means comprising solenoids with each solenoid controlling and stopping downward movement of a respective chopper plate at least two time clocks electrically connected with the X-ray machine, said solenoids being respectively controllable by said clocks and said clocks being operable in conjunction with the machine to controllably actuate said solenoids to control the movement and positioning of said chopper plates.
Claim 2
Dependent Claim
136 words
An assembly for use in operating conjunction with an X-ray machine for obtaining X-ray photographs of a patient, a chopper subassembly comprising a frame mountable between the source of X-ray of the machine and the patient, said frame including an opening therein for permitting the X-rays to pass therethrough, at least two vertically movable chopper plates each slidably mounted for selectively covering a portion of said opening, said chopper plates movable downwardly by gravity, movable stop means comprising solenoids with each solenoid controlling and stopping downward movement of a respective chopper plate at least two time clocks electrically connected with the X-ray machine, said solenoids being respectively controllable by said clocks and said clocks being operable in conjunction with the machine to controllably actuate said solenoids to control the movement and positioning of said chopper plates.
Claim 3
Dependent Claim
33 words
An assembly as in claim 1 wherein said solenoids each have a plunger selectively movable in response to the settings on said time clocks to control said chopper plates at distinct time periods.
References Cited (Backward Citations)
US3069549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |