US3197070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid dispensing device
Assignee: Individual
•
Filing: 1963-05-06
•
Granted: 1965-07-27
•
Expires: 1983-05-06
Abstract
No abstract record available.
Inventors
- 👤 Curtis F Pearl
- 👤 Jack W Kalbfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:25
CPC Classifications
F; F41; F41B; F41B9/00; F41B9/0003; F41B9/0031; F41B9/0037; B; B05; B05B; B05B9/00; B05B9/03; B05B9/04; B05B9/0403; B05B9/0426
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A FLUID DISPENSING DEVICE COMPRISING A HAND-CARRIED PUMP BODY CONTAINING A PRESSURE CHAMBER INCLUDING A REAR SECTION DISPOSED ADJACENT THE TRAILING END OF THE BODY AND EXTENDING LENGTHEWISE OF THE MAJOR PORTION THEREOF, A FRONT SECTION DISPOSED ADJACENT THE LEADING END OF THE PUMP BODY AND AN INTERMEDIATE SECTION HAVING A GREATER CROSS-SECTIONAL AREA THEN SAID FRONT AND REAR SECTIONS, THE PRESSURE CHAMBER CONTAINING: (A) A HOLLOW PLUNGER MOUNTED FOR MOVEMENT LONGITUDINALLY OF THE REAR SECTION OF THE PRESSURE CHAMBER, ONE END OF SAID PLUNGER EXTENDING OUT OF THE PUMP BODY AND THE OPPOSITE, FORWARD END THEREOF HAVING AN APERTURED PISTON FACE, AND AN ASSOCIATED VALVE MEANS OPENING UNDER DIFFERENTIAL FLUID PRESSURE PRODUCED ON OPPOSITE SIDES THEREOF; (B) A POWER PISTON MOUNTED FOR MOVEMENT LONGITUDINAL-
Claim 2
Dependent Claim
125 words
A FLUID DISPENSING DEVICE COMPRISING A HAND-CARRIED PUMP BODY CONTAINING A PRESSURE CHAMBER INCLUDING A REAR SECTION DISPOSED ADJACENT THE TRAILING END OF THE BODY AND EXTENDING LENGTHEWISE OF THE MAJOR PORTION THEREOF, A FRONT SECTION DISPOSED ADJACENT THE LEADING END OF THE PUMP BODY AND AN INTERMEDIATE SECTION HAVING A GREATER CROSS-SECTIONAL AREA THEN SAID FRONT AND REAR SECTIONS, THE PRESSURE CHAMBER CONTAINING: (A) A HOLLOW PLUNGER MOUNTED FOR MOVEMENT LONGITUDINALLY OF THE REAR SECTION OF THE PRESSURE CHAMBER, ONE END OF SAID PLUNGER EXTENDING OUT OF THE PUMP BODY AND THE OPPOSITE, FORWARD END THEREOF HAVING AN APERTURED PISTON FACE, AND AN ASSOCIATED VALVE MEANS OPENING UNDER DIFFERENTIAL FLUID PRESSURE PRODUCED ON OPPOSITE SIDES THEREOF; (B) A POWER PISTON MOUNTED FOR MOVEMENT LONGITUDINAL-
References Cited (Backward Citations)
US2793073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |