Patent FR58427E successfully refreshed from Google Patents.
Patent US4446345A successfully refreshed from Google Patents.
US4446345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seat switch assembly
Assignee: Yale Materials Handling Corp
•
Filing: 1982-05-19
•
Granted: 1984-05-01
•
Expires: 2002-05-19
Abstract
Abstract A seat switch assembly (11) which includes a ribbon switch (22) over which a corrugated actuating member (24) is laid, the assembly being imbedded within the bottom cushion (14) of the seat. The corrugations of the actuating member engage the ribbon switch at a plurality of spaced points and insure that the switch will be actuated by the weight of an operator applied at essentially any point on the bottom cushion.
Inventors
- 👤 William G. Sheiry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:09
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/02; H01H3/14; H01H3/141
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
167 words
In combination with a seat comprising a frame and a bottom cushion supported by said frame, a switch assembly including a ribbon switch disposed horizontally across said bottom cushion, the improvement wherein said switch assembly includes a substantially rigid actuating member disposed above said ribbon switch and substantially coextensive with the length of said ribbon switch in a direction parallel to the length of said ribbon switch and of substantially greater length than the width of said ribbon switch in a direction across said ribbon switch, said actuating member having a plurality of spaced apart contact areas extending across and engageable with said ribbon switch, said actuating member having a projected surface area which is only slightly smaller than the surface area of said cushion, said switch being connected in an electrical circuit including a power source and a warning device, said warning device being activated by actuation of said ribbon switch due to a weight equivalent to the weight of an operator applied to said cushion.
Claim 2
Dependent Claim
167 words
In combination with a seat comprising a frame and a bottom cushion supported by said frame, a switch assembly including a ribbon switch disposed horizontally across said bottom cushion, the improvement wherein said switch assembly includes a substantially rigid actuating member disposed above said ribbon switch and substantially coextensive with the length of said ribbon switch in a direction parallel to the length of said ribbon switch and of substantially greater length than the width of said ribbon switch in a direction across said ribbon switch, said actuating member having a plurality of spaced apart contact areas extending across and engageable with said ribbon switch, said actuating member having a projected surface area which is only slightly smaller than the surface area of said cushion, said switch being connected in an electrical circuit including a power source and a warning device, said warning device being activated by actuation of said ribbon switch due to a weight equivalent to the weight of an operator applied to said cushion.
Claim 3
Dependent Claim
33 words
An apparatus as claimed in claim 1 in which said actuating member comprises a sheet of corrugated material, the corrugations of which extend across said ribbon switch for engagement with the ribbon switch.
Claim 4
Dependent Claim
29 words
Apparatus as claimed in claim 1 or claim 2 in which said cushion is formed of a foam material and said switch assembly is embedded within said foam material.
Claim 5
Dependent Claim
20 words
Apparatus as claimed in claim 3 in which said actuating member comprises a plate member substantially rectangular in plan view.
References Cited (Backward Citations)
US3544746A
Cited
US3670120A
Cited
US3735380A
Cited
US3715541A
Cited
US3704352A
Cited
US3838236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |