US3193055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety brake combination for pneumatic drills
Assignee: Individual
•
Filing: 1962-01-16
•
Granted: 1965-07-06
•
Expires: 1982-01-16
Abstract
No abstract record available.
Inventors
- 👤 Lawrence J Morin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:09
CPC Classifications
E; E21; E21B; E21B15/00; E21B15/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A JACK LEG STINGER SAFETY BRAKE COMPRISING, A CYLINDER AND A PISTON ROD, A PISTON HEAD CONNECTED TO SAID PISTON ROD, MEANS DEFINING A LONGITUDINAL OPENING EXTENDING THROUGH SAID PISTON HEAD AND HAVING AN ENLARGED PORTION TO FORM A VALVE SEAT MEANS DEFINING A RADIAL OPENING COMMUNICATING WITH SAID LONGITUDINAL OPENING FOR PROVIDING A FLUID FLOW PATH THROUGH SAID PISTON HEAD, A VALVE STEM EXTENDING THROUGH SAID LONGITUDINAL OPENING, SAID VALVE STEM FORMED TO MATE WITH SAID SEAT, MEANS DEFINING AN ANNULAR RECESS BELOW SAID VALVE SEAT COMMUNICATING WITH SAID LONGITUDINAL OPENING, MEANS DEFINING A HOLE PARALLEL TO SAID LONGITUDINAL OPENING COMMUNICATING WITH SAID ANNULAR RECESS TO PROVIDE A SECOND FLUID FLOW PATH THROUGH SAID PISTON HEAD, AND A BALL VALVE POSITIONED WITHING SAID ANNULAR RECESS TO PERMIT FLUID FLOW IN SAID SECOND FLUID FLOW PATH IN ONLY ONE DIRECTION.
Claim 2
Dependent Claim
140 words
A JACK LEG STINGER SAFETY BRAKE COMPRISING, A CYLINDER AND A PISTON ROD, A PISTON HEAD CONNECTED TO SAID PISTON ROD, MEANS DEFINING A LONGITUDINAL OPENING EXTENDING THROUGH SAID PISTON HEAD AND HAVING AN ENLARGED PORTION TO FORM A VALVE SEAT MEANS DEFINING A RADIAL OPENING COMMUNICATING WITH SAID LONGITUDINAL OPENING FOR PROVIDING A FLUID FLOW PATH THROUGH SAID PISTON HEAD, A VALVE STEM EXTENDING THROUGH SAID LONGITUDINAL OPENING, SAID VALVE STEM FORMED TO MATE WITH SAID SEAT, MEANS DEFINING AN ANNULAR RECESS BELOW SAID VALVE SEAT COMMUNICATING WITH SAID LONGITUDINAL OPENING, MEANS DEFINING A HOLE PARALLEL TO SAID LONGITUDINAL OPENING COMMUNICATING WITH SAID ANNULAR RECESS TO PROVIDE A SECOND FLUID FLOW PATH THROUGH SAID PISTON HEAD, AND A BALL VALVE POSITIONED WITHING SAID ANNULAR RECESS TO PERMIT FLUID FLOW IN SAID SECOND FLUID FLOW PATH IN ONLY ONE DIRECTION.
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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) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |