Patent US3900956A successfully refreshed from Google Patents.
US3900956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drawing composite pictorial patterns
Assignee: Gakken Holdings Co Ltd
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Filing: 1973-03-19
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Granted: 1975-08-26
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Expires: 1993-03-19
Abstract
Abstract A disc, perforated with one or more prototype apertures therethrough and having ratchet teeth on its periphery, is rotatably received in a circular opening of a substantially flat frame. A ratchet mechanism including a knob slidable along a graduated slot is provided on the frame for causing the disc to turn relative to the frame through a desired angle. The frame together with the disc is revolvable around a pin extending downwardly from its bottom to be pierced through a drawing surface, so that composite patterns can be delineated along a locus defined by combination of the rotation of the disc on its own axis and the revolution of the frame around the pin.
Inventors
- 👤 Hideto Furuoka
- 👤 Nobuyuki Osa
- 👤 Shikichi Nakata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:53
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/20; B43L13/201; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18016
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
214 words
An apparatus for drawing composite pictorial patterns comprising, in combination: a disc perforated with at least one prototype aperture the periphery of which defines a particular configuration and is used as a guide for a writing implement to form an individual pattern; a plurality of ratchet teeth formed on the periphery of said disc; a substantially flat frame having a circular opening adapted to rotatably receive said disc; a ratchet mechanism supported by said frame for turning said disc relative to said frame by means of said ratchet teeth; said ratchet mechanism comprises a ratchet resiliently engaged with said ratchet teeth at one end thereof and connected to a knob at the other end thereof, said knob being slidably mounted on said frame for causing said ratchet to turn said disc relative to said frame in a predetermined direction, and a pawl affixed to said frame at one end thereof and resiliently engaged with said ratchet teeth at the other end thereof for preventing any undesired rotation of said disc relative to said frame; and wherein said knob is connected to said ratchet through a slot formed in said frame so as to be slidable along said slot, said slot comprising an arcuate opening whose center of curvature is the axis of said disc.
Claim 2
Independent Claim
214 words
An apparatus for drawing composite pictorial patterns comprising, in combination: a disc perforated with at least one prototype aperture the periphery of which defines a particular configuration and is used as a guide for a writing implement to form an individual pattern; a plurality of ratchet teeth formed on the periphery of said disc; a substantially flat frame having a circular opening adapted to rotatably receive said disc; a ratchet mechanism supported by said frame for turning said disc relative to said frame by means of said ratchet teeth; said ratchet mechanism comprises a ratchet resiliently engaged with said ratchet teeth at one end thereof and connected to a knob at the other end thereof, said knob being slidably mounted on said frame for causing said ratchet to turn said disc relative to said frame in a predetermined direction, and a pawl affixed to said frame at one end thereof and resiliently engaged with said ratchet teeth at the other end thereof for preventing any undesired rotation of said disc relative to said frame; and wherein said knob is connected to said ratchet through a slot formed in said frame so as to be slidable along said slot, said slot comprising an arcuate opening whose center of curvature is the axis of said disc.
Claim 3
Dependent Claim
25 words
The apparatus according to claim 1, wherein said slot is concentric with said circular opening, and said teeth are spaced equally apart from each other.
Claim 4
Independent Claim
191 words
An apparatus for drawing composite pictorial patterns comprising in combination: a disc perforated with at least one prototype aperture the periphery of which defines a particular configuration and is used as a guide for a writing implement to form an individual pattern; a plurality of ratchet teeth formed on the periphery of said disc; a substantially flat frame having a circular opening adapted to rotatably receive said disc; a ratchet resiliently engaged with said ratchet teeth at one end thereof; and connected to a knob at the other end thereof said knob being slidably mounted on said frame through a slot, for causing said ratchet to turn said disc relative to said frame in a predetermined direction; said slot being concentric with said disc and including a set of graduations formed along said slot to be referenced in causing said disc to turn through a desired angle relative to said frame by means of said knob; and a pawl affixed to said frame at one end thereof and resiliently engaged with said ratchet teeth at the other end thereof for preventing any undesired rotation of said disc relative to said frame.
Claim 5
Independent Claim
191 words
An apparatus for drawing composite pictorial patterns comprising in combination: a disc perforated with at least one prototype aperture the periphery of which defines a particular configuration and is used as a guide for a writing implement to form an individual pattern; a plurality of ratchet teeth formed on the periphery of said disc; a substantially flat frame having a circular opening adapted to rotatably receive said disc; a ratchet resiliently engaged with said ratchet teeth at one end thereof; and connected to a knob at the other end thereof said knob being slidably mounted on said frame through a slot, for causing said ratchet to turn said disc relative to said frame in a predetermined direction; said slot being concentric with said disc and including a set of graduations formed along said slot to be referenced in causing said disc to turn through a desired angle relative to said frame by means of said knob; and a pawl affixed to said frame at one end thereof and resiliently engaged with said ratchet teeth at the other end thereof for preventing any undesired rotation of said disc relative to said frame.
Claim 6
Dependent Claim
19 words
The apparatus according to claim 3 wherein said plurality of ratchet teeth are spaced equally apart from each other.
Claim 7
Dependent Claim
26 words
The apparatus as defined in claim 4, wherein the spacing from one to the next of said graduations corresponds to the pitch of said ratchet teeth.
Claim 8
Independent Claim
192 words
An apparatus for drawing composite pictorial patterns comprising in combination: a disc perforated with at least one prototype aperture the periphery of which defines a particular configuration and is used as a guide for a writing implement to form an individual pattern; a plurality of ratchet teeth formed on the periphery of said disc; a substantially flat frame having a circular opening adapted to rotatably receive said disc; a ratchet mechanism supported by said frame for turning said disc relative to said frame by means of said ratchet teeth; a pin extending downwardly from the bottom of said frame and having a pointed end to be pierced through a drawing surface, whereby said frame is rendered turnable around said pin together with said disc rotatably received in said circular opening thereof; a slot formed in said frame adjacent to said pin, said slot comprising an arcuate opening whose center of curvature is an axis located at the position of said pin, and a set of angularly spaced graduations formed along said slot, said slot and angularly spaced graduations being utilizable in repeatedly turning said frame around said pin through a desired angle.
Claim 9
Independent Claim
192 words
An apparatus for drawing composite pictorial patterns comprising in combination: a disc perforated with at least one prototype aperture the periphery of which defines a particular configuration and is used as a guide for a writing implement to form an individual pattern; a plurality of ratchet teeth formed on the periphery of said disc; a substantially flat frame having a circular opening adapted to rotatably receive said disc; a ratchet mechanism supported by said frame for turning said disc relative to said frame by means of said ratchet teeth; a pin extending downwardly from the bottom of said frame and having a pointed end to be pierced through a drawing surface, whereby said frame is rendered turnable around said pin together with said disc rotatably received in said circular opening thereof; a slot formed in said frame adjacent to said pin, said slot comprising an arcuate opening whose center of curvature is an axis located at the position of said pin, and a set of angularly spaced graduations formed along said slot, said slot and angularly spaced graduations being utilizable in repeatedly turning said frame around said pin through a desired angle.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |