Patent US3746357A successfully refreshed from Google Patents.
US3746357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snowmobile ambulances
Assignee: Individual
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Filing: 1971-10-18
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Granted: 1973-07-17
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Expires: 1991-10-18
Abstract
Abstract An ambulance sled for towing with a snowmobile. The ambulance sled has a pair of non-steerable rear skis and a tow bar assembly attached to a steerable front ski. An enclosed fiberglass body shell is mounted on the leaf-spring ski units and has a rear end door to facilitate insertion and removal of a stretcher. The bottom of the body shell has a pair of longitudinal recessed tracks in which the stretcher wheels run and for holding the stretcher in place. The body shell has a window in its top side and a pair of air intake scoops mounted forwardly of the window.
Inventors
- 👤 D Haskins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:47
CPC Classifications
B; B62; B62B; B62B13/00; A; A61; A61G; A61G1/00; A61G1/007; A61G3/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
An ambulance for towing with a snowmobile, comprising: a. a steerable front ski unit having a tow bar, b. a rear ski unit, c. a substantially enclosed elongate body shell longitudinally mounted on said ski units, d. a door for opening the rear end of said body shell for removing and reinserting a stretcher, and e. said body shell having a pair of longitudinally extending laterally spaced depending ridges formed integrally with the bottom of said shell, said ridges extending substantially the length of said body shell and providing interior recessed tracks for quiding and maintaining a stretcher in place in said body shell.
Claim 2
Dependent Claim
104 words
An ambulance for towing with a snowmobile, comprising: a. a steerable front ski unit having a tow bar, b. a rear ski unit, c. a substantially enclosed elongate body shell longitudinally mounted on said ski units, d. a door for opening the rear end of said body shell for removing and reinserting a stretcher, and e. said body shell having a pair of longitudinally extending laterally spaced depending ridges formed integrally with the bottom of said shell, said ridges extending substantially the length of said body shell and providing interior recessed tracks for quiding and maintaining a stretcher in place in said body shell.
Claim 3
Dependent Claim
67 words
The ambulance for towing with a snowmobile as specified in claim 1 wherein said steerable front ski unit comprises a single leaf spring mounted ski pivotally attached to a mounting frame for limited movement about both substantially vertical and horizontal axes and said rear ski unit comprises a pair of leaf spring mounted skis pivotally attached to a cross-frame for limited movement about a substantially horizontal axis.
Claim 4
Dependent Claim
64 words
The ambulance for towing with a snowmobile as specified in claim 2 having a window opening in the top of said body shell, a window covering extending across said window opening and removably secured to said body shell, and wherein the ends of the cross-frame of said rear ski unit extend laterally outward at the sides of the body shell to provide a footrest.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |