# US 4,399,552 A · Crosstable X-ray cassette holder

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- Number: US 4,399,552 A
- Document ID: US4399552A
- Status: Granted
- Kind: A
- Application number: 06/348,600
- Filed: 1982-02-12
- Granted: 1983-08-16
- Earliest claimed: 1980-07-07
- Inventors: Governor K. Renshaw
- Web page: https://patentgrep.com/patent/US4399552A

## CPC

- G03B 42/025: {Positioning or masking the X-ray film cartridge in the radiographic apparatus}
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)

## Abstract

An X-ray film cassette holder has adjustable end retaining means pivotally mounted on an end of a pivotally adjustable link that is adapted for clamping by a bottom plate and adjustable clamping plate to an edge of an X-ray table for positioning X-ray film for different angles of cross table radiography.

## Claims

### Claim 1

An adjustable cross table film holder having film clamping means carried by a pivot plate pivotally engaging a link pivotally mounted on a mounting unit in adjustable pivotal relation thereto and said mounting unit having a leg depending from one side of a top mounting plate with a narrow bottom plate extending from the bottom of said leg beneath said top plate and a clamping plate disposed adjacent said leg above said bottom plate and movably mounted with respect to said top and bottom plates for clamping an X-ray table edge between clamping plate and bottom plate.

### Claim 2 (depends on 1)

The film holder of claim 1 further defined by the bottom plate of said mounting unit being inclined upwardly in extension from said leg for improved gripping of a table edge.

### Claim 3 (depends on 1)

The film holder of claim 1 further defined by said clamping plate being mounted on said top plate by a shaft threadably engaging said top plate with hand gripping means atop said shaft for manual rotation to move said clamping plate to clamp a table edge having said bottom plate disposed beneath at least a portion of the table edge.

### Claim 4 (depends on 3)

The film holder of claim 3 further defined by said clamping plate being disposed adjacent said depending leg and having at least one protuberance thereon for engaging said leg and sliding therealong as said clamping plate is moved by turning said shaft.

### Claim 5 (depends on 3)

The film holder of claim 3 further defined by said bottom plate having a greater length than said clamping plate and extending beyond each end of said clamping plate.

### Claim 6 (depends on 1)

The film holder of claim 1 further defined by said top plate and leg being formed as a single integral rigid element having a right angle bend at the juncture of top plate and leg for maximum strength.

### Claim 7 (depends on 1)

The film holder of claim 1 further defined by all elements of said mounting unit being formed of metal and at least the facing surfaces of said clamping plate and bottom plate having a plastic coating for improved gripping of a table edge.

### Claim 8 (depends on 1)

The film holder of claim 1 further defined by said bottom plate extending beneath said clamping plate at least one half of the width of said clamping plate.

### Claim 9 (depends on 1)

The film holder of claim 1 further defined by said clamping plate having an inverted U-shaped central section with substantially horizontal ends extending therefrom and said clamping plate being adjustably mounted beneath said top mounting plate at the middle of said central section.