Patent US3747974A successfully refreshed from Google Patents.
US3747974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible seat for cableways
Assignee: Pomagalski SA Grenoble And Sig
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Filing: 1971-06-25
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Granted: 1973-07-24
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Expires: 1991-06-25
Abstract
Abstract The convertible seat comprises a chassis, a lower shell forming a sheilding bucket which surrounds said chassis and a transparent hemispheric cupola hinged about a diametral axis. A rapid assembling and disassembling of the convertible seat is obtained by means of a dismountable member operating as a hinge axis for the cupola and as securing axis on the seat frame for the shell. A compensating device, comprising a compensating spring associated to an adjustable friction means, is provided to balance the weight of the cupola and for damping the shocks against the stops at the end of the strokes of the cupola.
Inventors
- 👤 F Tauzin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:16
CPC Classifications
B; B61; B61B; B61B12/00; B61B12/002
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
Convertible seat for cableways comprising a seat, a frame supporting said seat and adapted to be suspended to a supporting cable, a lower shell forming a shielding bucket which is disposed behind said seat and has its lower portion fastened in a separable manner to the bottom of said frame while presenting lateral openings registering with corresponding openings of said frame, a transparent upper cupola disposed in the front of said seat and presenting near its periphery holes registering with said openings of said lower shell and of said frame, lateral spindles introduced through the registering openings of said lower shell, said frame and the holes of said cupola and locked in this position, said spindles acting at the same time to ensure the fastening of said lower shell to said frame and the pivoted mounting of said cupola.
Claim 2
Dependent Claim
139 words
Convertible seat for cableways comprising a seat, a frame supporting said seat and adapted to be suspended to a supporting cable, a lower shell forming a shielding bucket which is disposed behind said seat and has its lower portion fastened in a separable manner to the bottom of said frame while presenting lateral openings registering with corresponding openings of said frame, a transparent upper cupola disposed in the front of said seat and presenting near its periphery holes registering with said openings of said lower shell and of said frame, lateral spindles introduced through the registering openings of said lower shell, said frame and the holes of said cupola and locked in this position, said spindles acting at the same time to ensure the fastening of said lower shell to said frame and the pivoted mounting of said cupola.
Claim 3
Dependent Claim
74 words
Convertible seat for cableways according to claim 1 including handles on said frame, a rubber skirt on the front of said cupola which, when the cupola is in a raised position, protects the head of the users in their standing position, ready to leave the seat, while in the lowered position of said cupola said skirt protects the legs of the seated users and allows the hands of said users to grasp said handles.
Claim 4
Dependent Claim
99 words
Convertible seat for cableways according to claim 2, including a piston rod, said cupola is pivoted, at a point set off with respect of the center of gravity of said cupola, to the end of said piston rod, a cylinder having said piston rod slideable therein, link means pivotally connecting said cylinder to said frame compensating spring enclosed in said cylinder, a piston element rigid with said piston rod and adapted to exert a friction effect against the inner wall of the cylinder and said compensating spring being positioned between the top of said cylinder and said piston element.
Claim 5
Dependent Claim
69 words
Convertible seat for cableways according to claim 2, includng horizontal parallel slides connected to the bottom of said frame, a longitudinal bar slideable on said slides, a pulley connected to said frame and having said bar slideable thereon, a spring connecting said rod to said slides and a transverse rod on the free end of said bar, adapted to receive the feet of a user seating on said seat.
Claim 6
Dependent Claim
89 words
Convertible seat for cableways according to claim 2, wherein a first element of a safety chain is secured at one side of said frame and a second element of a safety chain, of same length, is secured on the other side of said frame, said first and second elements being covered with a plastic sheath and complementary attaching means on the free ends of said chains in order to be attached one to the other to prevent the fall of passengers when the cupola is in its raised position.
Claim 7
Dependent Claim
45 words
Convertible seat for cableways according to claim 3 including automatic control means including fixed cams, a shaft linked to said cylinder and pivotally supported by said frame, a roller on said shaft and capable of moving along said cams to open and close said cupola.
Claim 8
Dependent Claim
24 words
Convertible seat for cableways according to claim 6 including means for preventing movement of said cupola when said automatic control means is not actuated.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |