US3303756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic cylinders
Assignee: Crown Packaging UK Ltd
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Filing: 1964-12-04
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Granted: 1967-02-14
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Expires: 1984-12-04
Abstract
No abstract record available.
Inventors
- 👤 Geeson Robert Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:27
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/22; F15B15/227; F15B11/00; F15B11/06; F15B11/072; F15B11/076; F15B2211/00; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7055; F15B2211/80; F15B2211/885; F15B2211/8855
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A PNEUMATIC CYLINDER COMPRISING AN OPERATING PISTON MOVABLE AXIALLY IN A HOUSING IN RESPONSE TO AIR PRESSURE ADMITTED TO THE HOUSING AND HAVING A STROKE THE LENGTH OF WHICH IS LESS THAN THE INTERNAL DIAMETER OF THE HOUSING, A PISTON ROD MOVABLE AXIALLY WITH THE OPERATING PISTON AND ARRANGED FOR CONNECTION WITH A MEMBER TO BE OPERATED THEREBY, AND A CUSHIONING DEVICE EXTERNAL OF SAID HOUSING AND COMPRISING A CUSHIONING PISTON MOVABLE AXIALLY IN A CUSHIONING CHAMBER IN RESPONSE TO MOVEMENT OF THE OPERATING PISTON, SAID CUSHIONING CHAMBER BEING PROVIDED AT EACH OF THE OPPOSITE ENDS THEREOF WITH A SHALLOW RECESS INTO WHICH THE CUSHIONING PISTON IS MOVED AS IT APPROACHES AN END OF THE STROKE THEREOF THEREBY TO COMPRESS AIR IN THE RECESS TO RETARD AND ARREST MOVEMENT OF THE OPERATING PISTON BEFORE IT ENGAGES THE END OF THE HOUSING, AND OPENINGS IN THE SIDE OF THE CUSHIONING CHAMBER TO MAINTAIN AT ATMOSPHERIC PRESSURE THAT PORTION OF THE CUSHIONING CHAMBER WHICH IS BEHIND THE CUSHIONING PISTON AS IT ENTERS ONE OF THE SHALLOW RECESSES.
Claim 2
Dependent Claim
175 words
A PNEUMATIC CYLINDER COMPRISING AN OPERATING PISTON MOVABLE AXIALLY IN A HOUSING IN RESPONSE TO AIR PRESSURE ADMITTED TO THE HOUSING AND HAVING A STROKE THE LENGTH OF WHICH IS LESS THAN THE INTERNAL DIAMETER OF THE HOUSING, A PISTON ROD MOVABLE AXIALLY WITH THE OPERATING PISTON AND ARRANGED FOR CONNECTION WITH A MEMBER TO BE OPERATED THEREBY, AND A CUSHIONING DEVICE EXTERNAL OF SAID HOUSING AND COMPRISING A CUSHIONING PISTON MOVABLE AXIALLY IN A CUSHIONING CHAMBER IN RESPONSE TO MOVEMENT OF THE OPERATING PISTON, SAID CUSHIONING CHAMBER BEING PROVIDED AT EACH OF THE OPPOSITE ENDS THEREOF WITH A SHALLOW RECESS INTO WHICH THE CUSHIONING PISTON IS MOVED AS IT APPROACHES AN END OF THE STROKE THEREOF THEREBY TO COMPRESS AIR IN THE RECESS TO RETARD AND ARREST MOVEMENT OF THE OPERATING PISTON BEFORE IT ENGAGES THE END OF THE HOUSING, AND OPENINGS IN THE SIDE OF THE CUSHIONING CHAMBER TO MAINTAIN AT ATMOSPHERIC PRESSURE THAT PORTION OF THE CUSHIONING CHAMBER WHICH IS BEHIND THE CUSHIONING PISTON AS IT ENTERS ONE OF THE SHALLOW RECESSES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |