Patent US4804327A successfully refreshed from Google Patents.
US4804327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tracing apparatus
Assignee: Individual
•
Filing: 1988-02-02
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Granted: 1989-02-14
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Expires: 2008-02-02
Abstract
Abstract A magnetic tracing apparatus comprising an enclosure within which a mixture of nonmagnetic particles and magnetically attractive fragments are contained, at least one surface member of the enclosure being provided for the formation of a design image upon the inner surface upon it by causing the aforementioned mixture of materials to be attracted to the inner surface, and a permanent magnetic tracing device being provided for movement over the outer surface of the member and cause magnetically attractable fragments in the aforementioned mixture to be attracted to the tracing device to remove the attached mixture of particles and fragments from the inner surface of the member as moved along the outer surface of the member and fall therefrom; the principal improvement being the inclusion of supports of a number of different types which are attached in various ways to the enclosure and are operable to move the enclosure about at least one axis to agitate the mixture within the enclosure and thereby destroy the aforementioned design image and re-establish an uninterrupted layer of the mixture upon the inner surface of the aforementioned one surface member of the enclosure.
Inventors
- 👤 Sidney H. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:12
CPC Classifications
B; B43; B43L; B43L1/00; B43L1/008
Claims Analysis
Total Claims: 50
Claim 1
Independent Claim
177 words
A tracing apparatus comprising in combination, an enclosure of geometric configuration and having at least one transparent surface area, said enclosure containing pulverulent nonmagnetic particles disposed to adhere to the inner surface of said area admixed with magnetically attractive fragments, a permanent magnetic tracing device slidably movable over the outer surface of said area of said enclosure and attracting certain of said magnetically attractive particles toward said device as it is moved over said area and cause the magnetically attractive particles attracted thereto to move along the inner surface of said enclosure and remove from said inner surface a pattern of said nonmagnetic particles to form a design image where the attracted particles removed the nonmagnetic particles from the inner surface of said surface area, and means supporting said enclosure for rotation about an axis when it is desired to remove said pattern from the inner surface of said enclosure and re-establish a substantially uniform layer over the inner surface of said enclosure a continuous layer of said mixture of nonmagnetic and magnetically attracted particles and fragments.
Claim 2
Dependent Claim
177 words
A tracing apparatus comprising in combination, an enclosure of geometric configuration and having at least one transparent surface area, said enclosure containing pulverulent nonmagnetic particles disposed to adhere to the inner surface of said area admixed with magnetically attractive fragments, a permanent magnetic tracing device slidably movable over the outer surface of said area of said enclosure and attracting certain of said magnetically attractive particles toward said device as it is moved over said area and cause the magnetically attractive particles attracted thereto to move along the inner surface of said enclosure and remove from said inner surface a pattern of said nonmagnetic particles to form a design image where the attracted particles removed the nonmagnetic particles from the inner surface of said surface area, and means supporting said enclosure for rotation about an axis when it is desired to remove said pattern from the inner surface of said enclosure and re-establish a substantially uniform layer over the inner surface of said enclosure a continuous layer of said mixture of nonmagnetic and magnetically attracted particles and fragments.
Claim 3
Dependent Claim
45 words
The tracing apparatus according to claim 1 wherein said enclosure is substantially rectangular and includes hinge means along one edge fastenable to a supporting surface such as a wall and said enclosure is pivotally movable in opposite directions upon the axis of said hinge means.
Claim 4
Dependent Claim
49 words
The tracing apparatus according to claim 1 and further including a supporting panel and hinge means connecting one edge of said enclosure to said panel which supports said enclosure while the same is being moved in opposite directions about the axis of said hinge means relative to said panel.
Claim 5
Dependent Claim
45 words
The tracing apparatus according to claim 1 further including a supporting frame within which said enclosure is positioned, and supporting trunnions positioned between opposite sides of said frame and enclosure about the axis of which trunnions said enclosure is rotatable relative to said supporting frame.
Claim 6
Dependent Claim
64 words
The tracing apparatus according to claim 4 in which said frame has hinge means along one edge which is transverse to said trunnions and said hinge means being connectable to a vertical supporting surface, whereby said frame is pivotable upon said hinges to dispose said frame perpendicular to said supporting surface to permit said enclosure to be pivoted about the axis of said trunnions.
Claim 7
Dependent Claim
25 words
The tracing apparatus according to claim 4 further including free-standing support means connected to and extending downward from the bottom edge of said supporting frame.
Claim 8
Dependent Claim
24 words
The tracing apparatus according to claim 1 in which said enclosure is a polygon having a central axis about which said enclosure is rotatable.
Claim 9
Dependent Claim
14 words
The tracing apparatus according to claim 7 in which said enclosure is a cylinder.
Claim 10
Dependent Claim
25 words
The tracing apparatus according to claim 7 further including a supporting frame having upstanding support members spaced apart and rotatably receiving therebetween said rotatable polygon.
Claim 11
Dependent Claim
22 words
The tracing apparatus according to claim 9 in which bearing means connect the ends of said polygon to said upstanding support means.
Claim 12
Dependent Claim
35 words
The tracing apparatus according to claim 10 further including rotatable means connected to one of the ends of said rotatable polygon and operable to rotate the same about its axis in either selected rotary direction.
Claim 13
Dependent Claim
27 words
The tracing apparatus according to claim 7 in which said enclosure has flexible cylindrical walls and is inflated by fluid sealed therein under pressure greater than atmospheric.
Claim 14
Dependent Claim
29 words
The tracing apparatus according to claim 12 in which the pressure of said sealed fluid is within a pressure range between 1/8 pound and 50 pounds per square inch.
Claim 15
Dependent Claim
46 words
The tracing apparatus according to claim 7 in which said enclosure has an opening at one end sealed by a cap removably connected in sealing relationship over said opening, and said cap also comprising a manually-engageable means by which said enclosure is rotatable about its axis.
Claim 16
Dependent Claim
38 words
The tracing apparatus according to claim 14 further including an upstanding support having a bearing therethrough and said opening in said end of said enclosure comprises a tubular neck supported within said bearing for rotation by said cap.
Claim 17
Dependent Claim
69 words
The tracing apparatus according to claim 1 in which said permanent magnet tracing device has a manually-engageable handle to which a permanent magnet is fixed with the magnet axis of orientation coaxial with said handle and affixed to one end thereof, whereby the magnetic force of said magnet is applicable when the device is between a perpendicular relation to the drawing area and up to 30 degrees from perpendicular.
Claim 18
Dependent Claim
28 words
The tracing apparatus according to claim 16 in which the magnetic peak energy of the magnet is within the range of between 3 and 50 Mega gauss oersteds.
Claim 19
Dependent Claim
53 words
The tracing apparatus according to claim 1 wherein the inner surface of said area of said enclosure upon which sketching is made is coated with an antistat agent to increase the removal of particles and fragments from said inner surface by said tracing device when moved over the outer surface of said area.
Claim 20
Dependent Claim
23 words
The tracing apparatus according to claim 18 in which said antistat agent also is mixed with a chemical agent and/or a metal substance.
Claim 21
Dependent Claim
93 words
The tracing apparatus according to claim 1 in which the enclosure has opposite planar substantially transparent surface members spaced apart and integrally connected to sidewalls around the peripheries of said members to form an air-tight interior in which said nonmagnetic particles and magnetically attractive fragments are contained, one of said planar members having an outer surface upon which a design or image is to be drawn as described, and the interior surface of the other planar member being treated with an antistat material to repel the adherence of said particles and fragments thereto.
Claim 22
Dependent Claim
39 words
The tracing apparatus according to claim 1 in which at least the surface upon which a figure is to be drawn comprises a transparent plastic sheet having a tensile stress within a range of between 1 and 50,000 p.s.i.
Claim 23
Dependent Claim
52 words
The tracing apparatus according to claim 1 in which the inner surface of the area of the enclosure opposite that upon which a tracing is formed is suitably colored, whereby the color of said inner surface is viewable through the design formed upon the area upon which a tracing has been formed.
Claim 24
Dependent Claim
89 words
The tracing apparatus according to claim 1 further including a brush extending between opposite sides of and housed within said enclosure and having a magnetically attractive element on one end movable interiorly along an elongated enclosed channel extending along one sidewall of said enclosure and operable with an exterior permanent magnet when moved along the exterior surface of said enclosed channel for magnetic engagement of said element on said brush to effect movement of said brush within said enclosure including rotary movement by means of rotating said exterior magnet.
Claim 25
Dependent Claim
32 words
The tracing apparatus according to claim 1 in which the magnetically attractive material within said enclosure comprises within a range of 0.0001% to 95% of the pulverulent nonmagnetic material within said enclosure.
Claim 26
Dependent Claim
28 words
The tracing apparatus of claim 24 where the particles have one or a combination of the following shape properties: spherical, acicular, angular, fragmented, irregular, granular, dendritic and abrasive.
Claim 27
Dependent Claim
12 words
The tracing apparatus of claim 25 where a charge agent is added.
Claim 28
Dependent Claim
25 words
The tracing apparatus according to claim 1 wherein the nonmagnetic pulverulent material comprises particles selected from the group of plastics: polyethylene, polystyrene and polyvinyl chloride.
Claim 29
Dependent Claim
35 words
The tracing apparatus according to claim 1 wherein the pulverulent particles of nonmagnetic material are selected from the group: brass, bronze, carbon, ceramic, chrome, clay, copper, copper-oxide, iron-oxide, nickel, silica, stainless steel, tin and zinc.
Claim 30
Dependent Claim
33 words
The tracing apparatus according to claim 28 in which said particles of nonmagnetic material are coated with a material of the group comprising: saturated fatty acid, unsaturated fatty acid, wax, polymers and chemicals.
Claim 31
Dependent Claim
23 words
The tracing apparatus according to claim 1 in which said particles of nonmegnatic material within said enclosure are coated with an antistat material.
Claim 32
Dependent Claim
39 words
The tracing apparatus according to claim 1 wherein the area of the enclosure upon which a design is to be formed has a film attached to one of the surfaces thereof to enhance the image formed upon said area.
Claim 33
Dependent Claim
20 words
The tracing apparatus according to claim 31 in which said film has an antistat material applied to one surface thereof.
Claim 34
Dependent Claim
71 words
The tracing apparatus according to claim 1 wherein said enclosure comprises a planar surface area upon which designs and images are to be formed and an opposite translucent surface spaced therefrom, said surfaces being connected to side members to form said enclosure, said opposite translucent surface being colored, and a lighting element mounted to direct light through said translucent surface to highlight the designs when formed upon said aforementioned planar surface.
Claim 35
Dependent Claim
18 words
The tracing apparatus of claim 1 where the drawing surface is compounded with antistatic agents or antistatic chemicals.
Claim 36
Dependent Claim
15 words
The tracing apparatus of claim 1 where the inner and/or outer drawing surfaces are metallized.
Claim 37
Dependent Claim
21 words
The tracing apparatus of claim 1 where the magnet is supported and is moved mechanically and electronically by a remote controller.
Claim 38
Dependent Claim
16 words
The tracing apparatus of claim 1 where the particles are mixed with a liquid or gel.
Claim 39
Dependent Claim
51 words
The tracing box or shape of claim 1 where the drawing surface is erased with pulverulent or liquid material, that is fluidized with gases or liquids from a fan, or mechanically with pulverulent or liquid material, falling over drawing surface, from a conveyor or elevator, or brush or other mechanical device.
Claim 40
Dependent Claim
28 words
The tracing box or shape of claim 1 where the drawing surface is erased with a liquid, moved by a pump or manually, flowing over the drawing surface.
Claim 41
Dependent Claim
16 words
The tracing box or shape of claim 1 where iron is alloyed with magnetically unattractive material.
Claim 42
Dependent Claim
43 words
The tracing box or shape of claim 1 where the tracing box is supported and the drawing surface is erased by moving box up and down, or back and forth, or side to side, or by rotating it 360 degrees or by vibrating.
Claim 43
Dependent Claim
195 words
A tracing apparatus comprising in combination, an enclosure of geometric configuration and having at least one transparent surface area, said enclosure containing pulverulent nonmagnetic particles disposed to adhere to the inner surface of said area admixed with magnetically attractive fragments, a permanent magnetic tracing device slidably movable over the outer surface of said area of said enclosure and attracting certain of said magnetically attractive particles toward said device as it is moved over said area and cause the magnetically attractive particles attracted thereto to move along the inner surface of said enclosure and scrape from said inner surface a pattern of said nonmagnetic particles to form a transparent design, said tracing device being motorized and having wheels provided with magnetized rims and said enclosure having incorporated in a wall of said enclosure upon which said surface area is located magnetically attractive elements to which the magnetized rims of said wheels are attracted as the motor of said device rotates said wheels, and a remote control unit complementary with controls on said motor of said tracing device to effect movement of said tracing device over said surface area of said enclosure and form an image thereon.
Claim 44
Dependent Claim
195 words
A tracing apparatus comprising in combination, an enclosure of geometric configuration and having at least one transparent surface area, said enclosure containing pulverulent nonmagnetic particles disposed to adhere to the inner surface of said area admixed with magnetically attractive fragments, a permanent magnetic tracing device slidably movable over the outer surface of said area of said enclosure and attracting certain of said magnetically attractive particles toward said device as it is moved over said area and cause the magnetically attractive particles attracted thereto to move along the inner surface of said enclosure and scrape from said inner surface a pattern of said nonmagnetic particles to form a transparent design, said tracing device being motorized and having wheels provided with magnetized rims and said enclosure having incorporated in a wall of said enclosure upon which said surface area is located magnetically attractive elements to which the magnetized rims of said wheels are attracted as the motor of said device rotates said wheels, and a remote control unit complementary with controls on said motor of said tracing device to effect movement of said tracing device over said surface area of said enclosure and form an image thereon.
Claim 45
Dependent Claim
197 words
A tracing apparatus comprising in combination, an enclosure of geometric configuration and having at least one transparent surface area, said enclosure containing pulverulent nonmagnetic particles disposed to adhere to the inner surface of said area admixed with magnetically attractive fragments, a permanent magnetic tracing device slidably movable over the outer surface of said area of said enclosure and attracting certain of said magnetically attractive particles toward said device as it is moved over said area and cause the magnetically attractive particles attracted thereto to move along the inner surface of said enclosure and scrape from said inner surface a pattern of said nonmagnetic particles to form a transparent design, said tracing device being motorized and having wheels provided with magnetized rims and said enclosure having over said wall upon which said surface area is formed a thin transparent magnetically attractive sheet adhered thereto and to which the magnetized rims of said wheels are attracted as the motor of said device rotates said wheels, and a remote control unit complementary with controls on said motor of said tracing device to effect movement of said tracing device over said surface area of said enclosure and form an image thereon.
Claim 46
Dependent Claim
197 words
A tracing apparatus comprising in combination, an enclosure of geometric configuration and having at least one transparent surface area, said enclosure containing pulverulent nonmagnetic particles disposed to adhere to the inner surface of said area admixed with magnetically attractive fragments, a permanent magnetic tracing device slidably movable over the outer surface of said area of said enclosure and attracting certain of said magnetically attractive particles toward said device as it is moved over said area and cause the magnetically attractive particles attracted thereto to move along the inner surface of said enclosure and scrape from said inner surface a pattern of said nonmagnetic particles to form a transparent design, said tracing device being motorized and having wheels provided with magnetized rims and said enclosure having over said wall upon which said surface area is formed a thin transparent magnetically attractive sheet adhered thereto and to which the magnetized rims of said wheels are attracted as the motor of said device rotates said wheels, and a remote control unit complementary with controls on said motor of said tracing device to effect movement of said tracing device over said surface area of said enclosure and form an image thereon.
Claim 47
Dependent Claim
164 words
A tracing apparatus comprising in combination, an enclosure of geometric configuration and having at least one transparent surface area, said enclosure containing pulverulent nonmagnetic particles disposed to adhere to the inner surface of said area admixed with magnetically attractive fragments, a permanent magnetic tracing device slidably movable over the outer surface of said area of said enclosure and attracting certain of said magnetically attractive particles toward said device as it is moved over said area and cause the magnetically attractive particles attracted thereto to move along the inner surface of said enclosure and scrape from said inner surface a pattern of said nonmagnetic particles to form a transparent design, means supporting said enclosure between vertical guide members at spaced locations on the perimeter of said enclosure, and mechanical motorized means operable to move said enclosure rapidly in opposite vertical directions to remove the formed pattern and reestablish a substantially uniform coating over the inner surface of said enclosure upon which an image was formed.
Claim 48
Dependent Claim
164 words
A tracing apparatus comprising in combination, an enclosure of geometric configuration and having at least one transparent surface area, said enclosure containing pulverulent nonmagnetic particles disposed to adhere to the inner surface of said area admixed with magnetically attractive fragments, a permanent magnetic tracing device slidably movable over the outer surface of said area of said enclosure and attracting certain of said magnetically attractive particles toward said device as it is moved over said area and cause the magnetically attractive particles attracted thereto to move along the inner surface of said enclosure and scrape from said inner surface a pattern of said nonmagnetic particles to form a transparent design, means supporting said enclosure between vertical guide members at spaced locations on the perimeter of said enclosure, and mechanical motorized means operable to move said enclosure rapidly in opposite vertical directions to remove the formed pattern and reestablish a substantially uniform coating over the inner surface of said enclosure upon which an image was formed.
Claim 49
Dependent Claim
176 words
A tracing apparatus comprising in combination, an enclosure of geometric configuration and having at least one transparent surface area, said enclosure containing pulverulent nonmagnetic particles disposed to adhere to the inner surface of said area admixed with magnetically attractive fragments, a permanent magnetic tracing device slidably movable over the outer surface of said area of said enclosure and attracting certain of said magnetically attractive particles toward said device as it is moved over said area and cause the magnetically attractive particles attracted thereto to move along the inner surface of said enclosure and scrape from said inner surface a pattern of said nonmagnetic particles to form a transparent design, means supporting said enclosure between an opposite pair of parallel horizontal guides slidably receiving opposite edges of said enclosure, and mechanical motorized means connected to one end of said enclosure and operable to reciprocate the same horizontally and rapidly in opposite directions and thereby remove said formed pattern and re-establish a substantially uniform coating over the inner surface of said enclosure upon which an image was formed.
Claim 50
Dependent Claim
176 words
A tracing apparatus comprising in combination, an enclosure of geometric configuration and having at least one transparent surface area, said enclosure containing pulverulent nonmagnetic particles disposed to adhere to the inner surface of said area admixed with magnetically attractive fragments, a permanent magnetic tracing device slidably movable over the outer surface of said area of said enclosure and attracting certain of said magnetically attractive particles toward said device as it is moved over said area and cause the magnetically attractive particles attracted thereto to move along the inner surface of said enclosure and scrape from said inner surface a pattern of said nonmagnetic particles to form a transparent design, means supporting said enclosure between an opposite pair of parallel horizontal guides slidably receiving opposite edges of said enclosure, and mechanical motorized means connected to one end of said enclosure and operable to reciprocate the same horizontally and rapidly in opposite directions and thereby remove said formed pattern and re-establish a substantially uniform coating over the inner surface of said enclosure upon which an image was formed.
References Cited (Backward Citations)
US2589601A
Cited
US3585735A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-14 | 1992-08-15 | 1993-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-14 | 1996-08-15 | 1997-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-14 | 2000-08-15 | 2001-02-14 | $7700.00 | Window Closed / Lapsed |