Patent US3401705A successfully refreshed from Google Patents.
US3401705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Etching equipment
Assignee: CYCLO-TRONICS Inc
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Filing: 1966-09-21
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Granted: 1968-09-17
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Expires: 1986-09-21
Abstract
No abstract record available.
Inventors
- 👤 Goldware David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:12
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
AUTOMATIC ETCHING EQUIPMENT FOR ETCHING WORKPIECES, SUCH AS IN PROCESS PRINTED CIRCUIT BOARDS, SAID EQUIPMENT COMPRISING TANK MEANS FOR HOLDING A SUPPLY OF ETCHANT, SPRAY ASSEMBLY MEANS COUPLED TO SAID TANK MEANS FOR DIRECTING A SPRAY OF ETCHANT LIQUID, DRIVE MEANS FOR AUTOMATICALLY REPEATEDLY INSERTING AND REMOVING SAID WORKPIECE INTO AND OUT OF SAID SPRAY DURING AN ETCHING OPERATION, DRIVE CONTROL MEANS FOR CONTROLLING SAID DRIVE MEANS TO REMOVE SAID WORKPIECE FROM SAID SPRAY AFTER THE TERMINATION OF AN ETCHING OPERATION, MEANS INCLUDED IN SAID DRIVE CONTROL MEANS FOR AUTOMATICALLY TURNING OFF SAID SPRAY AT THE TERMINATION OF SAID ETCHING OPERATION SAID DRIVE MEANS COMPRISES DRIVE CHAIN ASSEMBLY MEANS HAVING A PAIR OF SPROCKET WHEELS, DRIVE CHAINS MEANS VIRTICALLY EXTENDED BETWEEN SAID SPROCKET WHEELS, MOTOR MEANS FOR DRIVING AT LEAST ONE OF SAID SPROCKET WHEELS, DOG MEANS ATTACHED TO SAID DRIVE CHAIN, EXTENSION MEANS SUPPORTING SAID DRIVE CHAIN MEANS OVER SAID SPRAY, AND MEANS FOR ATTACHING SAID WORKPIECES TO SAID DOG MEANS WHEREBY WHEN SAID ONE SPROCKET WHEEL IS DRIVEN, SAID WORKPIECES WILL BE RAISED AND LOWERED INTO AND OUT OF SAID SPRAY.
Claim 2
Dependent Claim
183 words
AUTOMATIC ETCHING EQUIPMENT FOR ETCHING WORKPIECES, SUCH AS IN PROCESS PRINTED CIRCUIT BOARDS, SAID EQUIPMENT COMPRISING TANK MEANS FOR HOLDING A SUPPLY OF ETCHANT, SPRAY ASSEMBLY MEANS COUPLED TO SAID TANK MEANS FOR DIRECTING A SPRAY OF ETCHANT LIQUID, DRIVE MEANS FOR AUTOMATICALLY REPEATEDLY INSERTING AND REMOVING SAID WORKPIECE INTO AND OUT OF SAID SPRAY DURING AN ETCHING OPERATION, DRIVE CONTROL MEANS FOR CONTROLLING SAID DRIVE MEANS TO REMOVE SAID WORKPIECE FROM SAID SPRAY AFTER THE TERMINATION OF AN ETCHING OPERATION, MEANS INCLUDED IN SAID DRIVE CONTROL MEANS FOR AUTOMATICALLY TURNING OFF SAID SPRAY AT THE TERMINATION OF SAID ETCHING OPERATION SAID DRIVE MEANS COMPRISES DRIVE CHAIN ASSEMBLY MEANS HAVING A PAIR OF SPROCKET WHEELS, DRIVE CHAINS MEANS VIRTICALLY EXTENDED BETWEEN SAID SPROCKET WHEELS, MOTOR MEANS FOR DRIVING AT LEAST ONE OF SAID SPROCKET WHEELS, DOG MEANS ATTACHED TO SAID DRIVE CHAIN, EXTENSION MEANS SUPPORTING SAID DRIVE CHAIN MEANS OVER SAID SPRAY, AND MEANS FOR ATTACHING SAID WORKPIECES TO SAID DOG MEANS WHEREBY WHEN SAID ONE SPROCKET WHEEL IS DRIVEN, SAID WORKPIECES WILL BE RAISED AND LOWERED INTO AND OUT OF SAID SPRAY.
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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) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |