Patent US3877808A successfully refreshed from Google Patents.
US3877808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed circuit board exposure holding device
Assignee: Individual
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Filing: 1973-08-30
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Granted: 1975-04-15
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Expires: 1993-08-30
Abstract
Abstract A printed circuit board exposure holding device providing simplified and accurate registration of an image or image mask pattern on both sides of a circuit board blank which is inserted between two hinged panels of the holding device. The continuous hinge connecting an edge of each of the panels retains the image or image mask patterns, which are adhered to the panels, in proper registration with respect to each other. One of the panels has pointed and relieved retaining pins to register the circuit board blank with respect to the image or image mask patterns when the hinged panels are in the closed position, covering both sides of the circuit board blank. Both sides of the circuit board blank can be exposed to ultraviolet light, infrared or other energy source while registered within the holding device.
Inventors
- 👤 Jr Carl R Jasperson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:25
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/18; G03F; G03F7/00; G03F7/20; G03F7/2022; H; H05; H05K; H05K3/00; H05K3/0073; H05K3/0082; H05K2203/00; H05K2203/15; H05K2203/1572; H05K2203/16; H05K2203/167; H05K3/0008
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
240 words
An exposure mounting device for exposing both faces of a circuit board, said device comprising: a pair of panels; a first layout mask accurately located at a first position on one of said pair of panels; a second layout mask accurately located at a second position on the other of said pair of panels; said first position of said first layout mask and said second position of said second layout mask being accurately aligned with respect to each other when said pair of panels are in face-to-face relation; means for securing said first layout mask to said one of said pair of panels and said second layout mask to said other of said pair of panels, said securing means preventing relative movement between said first layout mask and said one of said pair of panels and between said second layout mask and said other of said pair of panels; means for pivotally connecting said pair of panels together, allowing said panels to accurately pivot between an opened and a closed orientation with respect to each other, said connecting means providing accurate alignment of said pair of panels in said closed orientation, said connecting means maintaining said accurate alignment of said first and second layout masks with respect to each other as said pair of panels are moved between said opened and closed orientations; and means located on one of said panels for registering said printed circuit board within said panels.
Claim 2
Dependent Claim
240 words
An exposure mounting device for exposing both faces of a circuit board, said device comprising: a pair of panels; a first layout mask accurately located at a first position on one of said pair of panels; a second layout mask accurately located at a second position on the other of said pair of panels; said first position of said first layout mask and said second position of said second layout mask being accurately aligned with respect to each other when said pair of panels are in face-to-face relation; means for securing said first layout mask to said one of said pair of panels and said second layout mask to said other of said pair of panels, said securing means preventing relative movement between said first layout mask and said one of said pair of panels and between said second layout mask and said other of said pair of panels; means for pivotally connecting said pair of panels together, allowing said panels to accurately pivot between an opened and a closed orientation with respect to each other, said connecting means providing accurate alignment of said pair of panels in said closed orientation, said connecting means maintaining said accurate alignment of said first and second layout masks with respect to each other as said pair of panels are moved between said opened and closed orientations; and means located on one of said panels for registering said printed circuit board within said panels.
Claim 3
Dependent Claim
33 words
An exposure mounting device as defined in claim 1 wherein said means for pivotally connecting said pair of panels together comprises a hinging means connected to an edge of each of said panels.
Claim 4
Dependent Claim
26 words
An exposure mounting device as defined in claim 2 wherein said hinging means comprises a continuous hinge extending along an edge of each of said panels.
Claim 5
Dependent Claim
56 words
An exposure mounting device as defined in claim 1 wherein said means for registering said printed circuit board comprises retaining pins extending from the inside surface of one of said panels, and registering apertures within said printed circuit board to receive said pins to maintain said printed circuit board in accurate alignment with said layout masks.
Claim 6
Dependent Claim
25 words
An exposure mounting device as defined in claim 4 wherein said retaining pins have one end pointed to pierce a coating on said circuit board.
Claim 7
Dependent Claim
35 words
An exposure mounting device as defined in claim 4 wherein saId retaining pins have relief areas along their longitudinal surfaces to eliminate some of the frictional contact between said retaining pins and said registering apertures.
Claim 8
Dependent Claim
16 words
An exposure mounting device as defined in claim 1 wherein said pair of panels are translucent.
Claim 9
Dependent Claim
27 words
An exposure mounting device as defined in claim 1 and additionally comprising means for promoting ready movement of said panels from the closed to the open orientation.
Claim 10
Dependent Claim
31 words
An exposure mounting device as defined in claim 8, wherein said means for promoting ready movement of said panels comprises a spacer member along an edge of one of said panels.
Claim 11
Dependent Claim
146 words
A circuit board exposure holder for exposing both faces of a circuit board, said holder comprising: a pair of opposing cover plates, each of said plates having an interior surface; means for pivotally connecting said cover plates in precise juxtaposed relation to each other to provide alignment of said cover plates when said interior surfaces of said cover plates are moved into face to face orientation; a pair of image masks, each attached respectively in face-to-face contact with a surface of each of said cover plates; and means for securing each of said pair of image masks respectively to said pair of cover plates, said securing means preventing relative movement between each of said pair of image masks and each of said cover plates, said masks maintained in accurate alignment with one another by said connecting means when said cover plates are in said closed position.
Claim 12
Dependent Claim
146 words
A circuit board exposure holder for exposing both faces of a circuit board, said holder comprising: a pair of opposing cover plates, each of said plates having an interior surface; means for pivotally connecting said cover plates in precise juxtaposed relation to each other to provide alignment of said cover plates when said interior surfaces of said cover plates are moved into face to face orientation; a pair of image masks, each attached respectively in face-to-face contact with a surface of each of said cover plates; and means for securing each of said pair of image masks respectively to said pair of cover plates, said securing means preventing relative movement between each of said pair of image masks and each of said cover plates, said masks maintained in accurate alignment with one another by said connecting means when said cover plates are in said closed position.
Claim 13
Independent Claim
146 words
A device for registering printed circuit boards between two opposing image masks, said device comprising: a pair of translucent panels having inside and outside faces; a first layout mask attached to said inside face of one of said pair of panels; a second layout mask attached to said inside face of the other of said pair of panels; means for pivotally attaching said panels together, allowing said inside faces of said panels to be moved in a precisely aligned juxtaposed relation, said attaching means maintaining accurate alignment of said first and second layout masks with respect to each other as said inside faces of said pair of panels are moved into a face-to-face position; and means located on one of said inside faces for mounting said circuit board in alignment with said image masks when said inside faces of said panels are in said juxtaposed relation.
Claim 14
Independent Claim
146 words
A device for registering printed circuit boards between two opposing image masks, said device comprising: a pair of translucent panels having inside and outside faces; a first layout mask attached to said inside face of one of said pair of panels; a second layout mask attached to said inside face of the other of said pair of panels; means for pivotally attaching said panels together, allowing said inside faces of said panels to be moved in a precisely aligned juxtaposed relation, said attaching means maintaining accurate alignment of said first and second layout masks with respect to each other as said inside faces of said pair of panels are moved into a face-to-face position; and means located on one of said inside faces for mounting said circuit board in alignment with said image masks when said inside faces of said panels are in said juxtaposed relation.
Claim 15
Dependent Claim
123 words
A printed circuit board retaining device for exposing both faces of a circuit board, said device comprising: a pair of holding members made of translucent material; means for pivotally connecting said holding members to each other, said holding members capable of retaining said printed circuit board when said holding members are pivoted to a face-to-face position; an image mask securely attached to each of said holding members, said connecting means maintaining proper alignment between said image masks on each of said holding members when said holding members are pivoted to a face-to-face position; and means located on one of said holding members for anchoring said circuit board in proper alignment with said image masks when said holding members are in said face-to-face position.
Claim 16
Dependent Claim
123 words
A printed circuit board retaining device for exposing both faces of a circuit board, said device comprising: a pair of holding members made of translucent material; means for pivotally connecting said holding members to each other, said holding members capable of retaining said printed circuit board when said holding members are pivoted to a face-to-face position; an image mask securely attached to each of said holding members, said connecting means maintaining proper alignment between said image masks on each of said holding members when said holding members are pivoted to a face-to-face position; and means located on one of said holding members for anchoring said circuit board in proper alignment with said image masks when said holding members are in said face-to-face position.
Claim 17
Independent Claim
169 words
A method of producing a circuit design on two sides of a circuit board blank comprising the steps of: securely attaching a first translucent layout pattern on a surface of one of two pivotally connected translucent plates; securely attaching a second translucent layout pattern on a surface of the other of said two pivotally connected translucent plates, said first and second layout patterns being held in accurate alignment with each other by said pivotally connected translucent plates; placing said circuit board blank on registering pins connected to one of said plates, said circuit board blank having photosensitive surfaces; pivoting said plates to a closed position resulting in said plates mating with opposite sides of said circuit Board blank, and said layout patterns on said plates being in accurate registration with each other; exposing each of said plates with said layout pattern to an energy source; removing said circuit board blank from said registering pins; and etching said circuit board blank by subjecting the same to an appropriate chemical process.
Claim 18
Independent Claim
169 words
A method of producing a circuit design on two sides of a circuit board blank comprising the steps of: securely attaching a first translucent layout pattern on a surface of one of two pivotally connected translucent plates; securely attaching a second translucent layout pattern on a surface of the other of said two pivotally connected translucent plates, said first and second layout patterns being held in accurate alignment with each other by said pivotally connected translucent plates; placing said circuit board blank on registering pins connected to one of said plates, said circuit board blank having photosensitive surfaces; pivoting said plates to a closed position resulting in said plates mating with opposite sides of said circuit Board blank, and said layout patterns on said plates being in accurate registration with each other; exposing each of said plates with said layout pattern to an energy source; removing said circuit board blank from said registering pins; and etching said circuit board blank by subjecting the same to an appropriate chemical process.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |