Index device
AssigneeCarl Manufacturing Co., Ltd.
InventorChuzo Mori
Life of this patent
Estimating the term…
Abstract
There is disclosed an index device in which a cover member is axially attached to a receptacle so as to be openable and closable, and a multiplicity of cards are accommodated therebetween so as to be superposed on each other. This indexing device is arranged such that: a rotation resisting member including viscous substance for moderating the resilient repulsion forces when the cover member is unfolded from the receptacle is provided between the receptacle and the cover member; the rotation resisting member has a rotor which rotates within hermetically sealed casings attached to the receptacle and filled with the viscous substance; and notches are formed in a peripheral portion of the rotor.
Claims5
In an index device wherein proximal portions of a receptacle, whose opening is formed upwards and of a cover member whose opening is formed downwards, undergo insertion of a spindle so that said cover member is openable and closable, said cover member is biased by a spring in its opening direction, a multiplicity of cards are so accommodated in between said receptacle and said cover member as to be superposed on each other, a sheet of the card is open just when unfolding said cover member secured to said receptacle, and there is provided a rotation resisting member for moderating repulsion forces of said spring, said rotation resisting member being so arranged as to interpose a viscous substance in between said receptacle and said cover member,
- wherein the improvement comprises:
- one casing formed with a hole through which said spindle passes;
- the other casing coaxially fitted in said one casing, said two casings including a space formed therebetween;
- a rotor having notches formed in a flange thereof, said rotor turning about said spindle within the space;
- viscous substance charged in between an inner wall of said casing and said flange within the space;
- and
- a non-circular member having continuity with a cylindrical member provided a central portion of said rotor, said cylindrical member being rotatable with respect to a central hole formed in said the other casing, said non-circular member protruding from said casing and unrotatably engaging with said cover member rotatable about said spindle.
In an index device wherein proximal portions of a receptacle, having an opening formed upwards and of a cover member having an opening formed downwards, undergo insertion of a spindle so that said cover member is openable and closable, said cover member is biased by a spring in its opening direction, a multiplicity of cards are so accommodated in between said receptacle and said cover member so as to be superposed on each other, a sheet of card is opened when unfolding said cover member secured to said receptacle, and there is provided a rotation resisting member for moderating repulsion forces of said spring, said rotation resisting member being arranged so as to interpose a viscous substance in between said receptacle and said cover member,
- wherein the improvement comprises:
- one casing formed with a hole through which said spindle passes, said casing comprising protrudent pins;
- the other casing having recessed portions for receiving said protrudent pins, said other casing coaxially fitted in said one casing, said two casings including a space formed therebetween;
- a rotor having notches formed in a flange thereof, said rotor turning about said spindle within the space formed between said two casings;
- viscous substance charged in between an inner wall of said casing and said flange within the space;
- and
- a non-circular member having continuity with a cylindrical member provided at a central portion of said rotor, said cylindrical member being rotatable with respect to a central hole formed in said other casing, said non-circular member protruding from said casing unrotatably engaging with said cover member rotatable about said spindle.
Dependencies are inferred from the claim text.