← Back to Patent Explorer
US3350993A Expired / Lapsed US ⏱️ 0.0 years remaining

Photographic apparatus for treating light-sensitive materials with a liquid

Assignee: Polaroid Corp
•
Filing: 1965-04-30
•
Granted: 1967-11-07
•
Expires: 1985-04-30
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Paul B Mason

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 05:05
CPC Classifications
G; G03; G03D; G03D9/00; G03D9/02

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 237 words
IN PHOTOGRAPHIC APPARATUS INCLUDING MEANS FOR DISPENSING A QUANTITY OF PROCESSING LIQUID FROM EACH OF A PLURALITY OF ELONGATED CONTAINERS ONTO AN EXPOSED SECTION OF A PHOTOGRAPHIC SHEET WITHIN SAID APPARATUS COMPRISING, IN COMBINATION: FIRST AND SECOND MEMBERS MOUNTED FOR ROTATION ADJACENT EACH OTHER AND A LATERAL EDGE OF SAID SHEET WITHIN SAID APPARATUS, ONE OF SAID MEMBERS BEING MOUNTED FOR ROTATION IN POSITION FOR ENGAGING SAID CONTAINER ADJACENT SAID LATERAL EDGE AND THE OTHER OF SAID MEMBERS BEING MOUNTED FOR MOVEMENT TOWARD AND AWAY FROM SAID ONE MEMBER BETWEEN A FIRST POSITION IN WHICH THE DISTANCE BETWEEN SAID MEMBERS IS GREATER THAN THE THICKNESS OF SAID CONTAINER, A SECOND POSITION IN WHICH SAID DISTANCE IS SUBSTANTIALLY EQUAL TO SAID THICKNESS AND SAID MEMBERS FRICTIONALLY ENGAGE SAID CONTAINER AND A THIRD POSITION IN WHICH SAID DISTANCE IS SIGNIFICANTLY LESS THAN SAID THICKNESS AND SAID MEMBERS COMPRESSIVELY ENGAGE SAID CONTAINER; GUIDE MEANS FOR LOCATING EACH OF A PLURALITY OF SAID CONTAINERS ADJACENT AND TRANSVERSE SAID PHOTOGRAPHIC SHEET WITHIN SAID APPARATUS AND WITH AN END SECTION OF SAID CONTAINER POSITIONED BETWEEN SAID MEMBERS; AND MEANS FOR MOVING SAID OTHER MEMBER TOWARD AND AWAY FROM SAID ONE MEMBER AND FOR ROTATING ONE OF SAID MEMBERS IN ENGAGEMENT WITH SAID CONTAINER TO ADVANCE SAID CONTAINER LENGTHWISE RELATIVE TO SAID SHEET AND TO PROGRESSIVELY COMPRESS SAID CONTAINER TO DISPENSE A QUANTITY OF SAID LIQUID ONTO SAID SHEET AS A UNIFORMLY DISTRIBUTED MASS.
Claim 2
Dependent Claim 237 words
IN PHOTOGRAPHIC APPARATUS INCLUDING MEANS FOR DISPENSING A QUANTITY OF PROCESSING LIQUID FROM EACH OF A PLURALITY OF ELONGATED CONTAINERS ONTO AN EXPOSED SECTION OF A PHOTOGRAPHIC SHEET WITHIN SAID APPARATUS COMPRISING, IN COMBINATION: FIRST AND SECOND MEMBERS MOUNTED FOR ROTATION ADJACENT EACH OTHER AND A LATERAL EDGE OF SAID SHEET WITHIN SAID APPARATUS, ONE OF SAID MEMBERS BEING MOUNTED FOR ROTATION IN POSITION FOR ENGAGING SAID CONTAINER ADJACENT SAID LATERAL EDGE AND THE OTHER OF SAID MEMBERS BEING MOUNTED FOR MOVEMENT TOWARD AND AWAY FROM SAID ONE MEMBER BETWEEN A FIRST POSITION IN WHICH THE DISTANCE BETWEEN SAID MEMBERS IS GREATER THAN THE THICKNESS OF SAID CONTAINER, A SECOND POSITION IN WHICH SAID DISTANCE IS SUBSTANTIALLY EQUAL TO SAID THICKNESS AND SAID MEMBERS FRICTIONALLY ENGAGE SAID CONTAINER AND A THIRD POSITION IN WHICH SAID DISTANCE IS SIGNIFICANTLY LESS THAN SAID THICKNESS AND SAID MEMBERS COMPRESSIVELY ENGAGE SAID CONTAINER; GUIDE MEANS FOR LOCATING EACH OF A PLURALITY OF SAID CONTAINERS ADJACENT AND TRANSVERSE SAID PHOTOGRAPHIC SHEET WITHIN SAID APPARATUS AND WITH AN END SECTION OF SAID CONTAINER POSITIONED BETWEEN SAID MEMBERS; AND MEANS FOR MOVING SAID OTHER MEMBER TOWARD AND AWAY FROM SAID ONE MEMBER AND FOR ROTATING ONE OF SAID MEMBERS IN ENGAGEMENT WITH SAID CONTAINER TO ADVANCE SAID CONTAINER LENGTHWISE RELATIVE TO SAID SHEET AND TO PROGRESSIVELY COMPRESS SAID CONTAINER TO DISPENSE A QUANTITY OF SAID LIQUID ONTO SAID SHEET AS A UNIFORMLY DISTRIBUTED MASS.

References Cited (Backward Citations)

US2687827A Cited
US2918197A Cited
US3134317A Cited
US3103866A Cited
US3266405A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1970-11-06 1971-05-08 1971-11-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1974-11-06 1975-05-08 1975-11-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1978-11-06 1979-05-08 1979-11-07 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag