Patent US3217094A successfully refreshed from Google Patents.
Patent US3994604A successfully refreshed from Google Patents.
US3994604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston and rod connection
Assignee: VME AMERICAS Inc
•
Filing: 1975-06-30
•
Granted: 1976-11-30
•
Expires: 1995-06-30
Abstract
Abstract A screw type connection for rigidly mounting a piston on a rod and securing the connection. There is a pair of cooperating aligned slots in the outer piston and the inner rod. A locking member is located conjointly in the slots and a retainer member is provided to keep the locking member in position during operation.
Inventors
- 👤 Peter J. Visser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:23
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/1423; F15B15/1447; F16; F16J; F16J1/00; F16J1/10; F16J1/12; F16B; F16B2200/00; F16B2200/69; Y; Y10; Y10T; Y10T403/00; Y10T403/16; Y10T403/1633; Y10T403/32; Y10T403/32254; Y10T403/32262
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
A connection mounting a piston on a rod comprising, an external screw threaded portion on the rod, an internal screw threaded portion on the piston mating with the said external screw threaded portion, the said screw threaded portions defining a longitudinal axis, at least one longitudinally disposed slot in the outer surface of the said external screw threaded portion, at least one longitudinally disposed slot in the inner surface of the said internal screw threaded portion and arranged to align with the first mentioned slot at one circumferential position of said piston on said rod, a locking member located conjointly in both the said slots, a retainer member securing the locking member in said position, the said retainer member being secured to the said piston by means of a threaded fastener in an opening in the said piston, and a conduit connecting the inner end of said opening in the piston to the inner end of the said longitudinally disposed slot in the said internal screw threaded portion whereby the application of pressure through the said opening for the (cap screw) threaded fastener may be utilized to force the said locking member from its locking position.
Claim 2
Dependent Claim
196 words
A connection mounting a piston on a rod comprising, an external screw threaded portion on the rod, an internal screw threaded portion on the piston mating with the said external screw threaded portion, the said screw threaded portions defining a longitudinal axis, at least one longitudinally disposed slot in the outer surface of the said external screw threaded portion, at least one longitudinally disposed slot in the inner surface of the said internal screw threaded portion and arranged to align with the first mentioned slot at one circumferential position of said piston on said rod, a locking member located conjointly in both the said slots, a retainer member securing the locking member in said position, the said retainer member being secured to the said piston by means of a threaded fastener in an opening in the said piston, and a conduit connecting the inner end of said opening in the piston to the inner end of the said longitudinally disposed slot in the said internal screw threaded portion whereby the application of pressure through the said opening for the (cap screw) threaded fastener may be utilized to force the said locking member from its locking position.
References Cited (Backward Citations)
US321735A
Cited
GB190304231A
Cited
US2318590A
Cited
BE623646A
Cited
US3293993A
Cited
US3865497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-30 | 1980-05-31 | 1980-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-30 | 1984-05-31 | 1984-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-30 | 1988-05-31 | 1988-11-30 | $7700.00 | Window Closed / Lapsed |