Patent US3605601A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3605601A Expired / Lapsed US ⏱️ 0.0 years remaining

Automatic film developing apparatus

Assignee: Individual
•
Filing: 1969-02-18
•
Granted: 1971-09-20
•
Expires: 1989-02-18
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract AN APPARATUS FOR AUTOMATICALLY DEVELOPING A ROLL OF FILM WITHIN ITS CASETTE INCLUDES A VERTICAL ROTARY SHAFT OF A SPOOL ROTATING DEVICE WHICH IS FITTED TO THE CASSETTE. CUPSHAPED PROCESSING TANKS, CORRESPONDING IN NUMBER TO THE DEVELOPING PROCESSING STEPS, ARE POSITIONED ON A TURNTABLE. THE TANKS CONTAIN DEVELOPER OR WASHING WATER ARRANGED IN THE ORDER OF THE DEVELOPING STEPS AND EACH ONE, IN TURN, IS ROTATED TO BENEATH THE ROTARY SHAFT. AN ASCENT AND DESCENT DEVICE RAISES AND LOWERS THE SPOOL ROTARY DEVICE SO THAT AT ITS BOTTOM DEAD POINT THE CASSETTE IS FULLY IMMERSED IN THE DEVELOPER OR WASHING WATER OF A TANK. THE SPOOL ROTARY DEVICE INCLUDES A ROTARY DIRECTION REVERSAL MECHANISM WHEREBY THE SPOOL IS ALTERNATELY AND REPEATEDLY ROLLED UP AND BACK.

Inventors

  • 👤 Shigeru Okayama
  • 👤 Kunihiro Okayama
  • 👤 Hidehiko Takahashi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 16:35
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/16; G03D13/00; G03D13/02; G03D13/04; G03D13/06; G03D3/08; G03D3/10

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-09-19 1975-03-21 1975-09-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-09-19 1979-03-21 1979-09-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-09-19 1983-03-21 1983-09-20 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag