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US 4,304,490 AGranted
Spectrophotometer
AssigneeHitachi, Ltd.
InventorsTakeo Murakoshi, Isao Nemoto, Shigeo Tohyama, Nobuo Akitomo
Life of this patent
Estimating the term…
Abstract
In a spectrophotometer including a housing, an optical system mounted in the housing and a specimen chamber formed by partitioning a part of the housing for mounting therein a sample cell, the specimen chamber is formed with an opening through which the sample cell is mounted and dismounted and a cover plate is mounted so as to be slidably movable between a closing position where the opening of the chamber is wholly covered by the cover plate and an opening position where the specimen chamber is accessible from outside of the housing.
Claims10
A spectrophotometer including a housing;
- an optical system mounted in said housing for generating a measuring light beam;
- and a specimen chamber provided in said housing for mounting therein a sample cell to be analyzed by applying thereto said measuring light beam, said specimen chamber being formed with an opening through which said chamber is accessible from outside of said housing for mounting or dismounting the sample cell, a generally-rectangular cover plate made of an opaque material and adapted to cover said opening of said specimen chamber, and means for mounting said cover plate so as to be slidably movable between a closing position where said cover plate wholly covers said opening thereby shielding said specimen chamber from external light and an opening position where said specimen chamber is accessible from outside of said housing, said chamber having opposing side walls, a rear wall connected to the rear ends of said side walls, and a front wall extending between the front ends of said side walls, said cover plate having a bent portion formed by bending opposing side edges of said cover plate inwardly, and said mounting means including portions extending along the entire length of the upper edges of said side walls and slidably supporting said bent portions of said cover plate, respectively;
- said housing including a bottom plate, and a cover for defining a space for accommodating said optical system in cooperation with said bottom plate and including an upper wall and a side wall extending between said upper wall and said bottom plate, said specimen chamber being provided by partitioning said space, the opening of said specimen chamber being formed by cutting off a substantially-rectangular portion of the upper wall of said cover, and said opposing side walls and said rear wall of said specimen chamber being formed integrally with said cover to extend from the peripheral edge of said cut-off portion of said upper wall into said space.
A spectrophotometer including a housing;
- an optical system mounted in said housing for generating a measuring light beam;
- and a specimen chamber provided in said housing for mounting therein a sample cell to be analyzed by applying thereto said measuring light beam, said specimen chamber being formed with an opening through which said chamber is accessible from outside of said housing for mounting or dismounting the sample cell, a generally-rectangular cover plate made of an opaque material and adapted to cover said opening of said specimen chamber, and means for mounting said cover plate so as to be slidably movable between a closing position where said cover plate wholly covers said opening thereby shielding said specimen chamber from external light and an opening position where said specimen chamber is accessible from outside of said housing, said chamber having opposing side walls, a rear wall connected to the rear ends of said side walls, and a front wall extending between the front ends of the side walls, said cover plate having a bent portion formed by bending opposing side edges of said cover plate inwardly, and said mounting means including portions extending along the entire length of the upper edges of said side walls and slidably supporting said bent portions of said bent portions of said cover plate, respectively;
- said portions for supporting said bent portions of said cover plate each being in the form of a groove so as to receive said bent portion, and said bent portions of said cover plate each having at the end thereof an expanded portion with a longitudinally-extending plane surface closely in contact with the bottom surface of said groove;
- said housing including a bottom plate, and a cover for defining a space for accommodating said optical system in cooperation with said bottom plate and including an upper wall and a side wall extending between said upper wall and said bottom plate, said specimen chamber being provided by partitioning said space, the opening of said specimen chamber being formed by cutting off a substantially-rectangular portion of the upper wall of said cover, and said opposing side walls and said rear wall of said specimen chamber being formed integrally with said cover to extend from the peripheral edge of said cut-off portion of said upper wall into said space.
1 more element
Dependencies are inferred from the claim text.