US3869742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder and mounting for small boats
Assignee: SAID JAMES DOUGLAS THOMPSON TO
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Filing: 1974-02-28
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Granted: 1975-03-11
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Expires: 1994-02-28
Abstract
Abstract A single shaft ladder for use particularly by SCUBA divers in boarding small boats and a mounting bracket for mounting the ladder in angularly inclined relationship to the transom of a small boat with a top end portion of the ladder extending above and inwardly of the transom and with a bottom end portion extending in a downwardly divergent direction with respect to the transom into the water. The ladder has sets of opposite, laterally extending rungs spaced along the bottom portion of the ladder and a single rung extending laterally from one side of the upper portions of the ladder adjacent its top end to provide a handle for the person boarding the boat.
Inventors
- 👤 William F Gale
- 👤 James Douglas Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:14
CPC Classifications
B; B63; B63B; B63B27/00; B63B27/14; B63B27/146; E; E06; E06C; E06C1/00; E06C1/02; E06C1/34; E06C1/36
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
146 words
An improved ladder and mounting for small boats comprising in combination a single shaft ladder having top and bottom ends and bracket engaging means secured to the shaft intermediate said top and bottom ends and dividing said ladder into top and bottom end portions, and a bracket adapted to be secured near the top edge of the transom of a boat for supporting said ladder angularly inclined with respect to the transom with the bottom end portion of the ladder extending in a downwardly diverging direction with respect to the transom and with said top end portion extending above and over the top edge of the transom, said ladder having sets of laterally extending opposite rungs spaced along the bottom portion of the ladder, and a single rung laterally extending from one side of said ladder providing a handle near the top end of the ladder.
Claim 2
Dependent Claim
146 words
An improved ladder and mounting for small boats comprising in combination a single shaft ladder having top and bottom ends and bracket engaging means secured to the shaft intermediate said top and bottom ends and dividing said ladder into top and bottom end portions, and a bracket adapted to be secured near the top edge of the transom of a boat for supporting said ladder angularly inclined with respect to the transom with the bottom end portion of the ladder extending in a downwardly diverging direction with respect to the transom and with said top end portion extending above and over the top edge of the transom, said ladder having sets of laterally extending opposite rungs spaced along the bottom portion of the ladder, and a single rung laterally extending from one side of said ladder providing a handle near the top end of the ladder.
Claim 3
Dependent Claim
146 words
An improved ladder and mounting for small boats comprising in combination a single shaft ladder having top and bottom ends and bracket engaging means secured to the shaft intermediate said top and bottom ends and dividing said ladder into top and bottom end portions, and a bracket adapted to be secured near the top edge of the transom of a boat for supporting said ladder angularly inclined with respect to the transom with the bottom end portion of the ladder extending in a downwardly diverging direction with respect to the transom and with said top end portion extending above and over the top edge of the transom, said ladder having sets of laterally extending opposite rungs spaced along the bottom portion of the ladder, and a single rung laterally extending from one side of said ladder providing a handle near the top end of the ladder.
Claim 4
Dependent Claim
146 words
An improved ladder and mounting for small boats comprising in combination a single shaft ladder having top and bottom ends and bracket engaging means secured to the shaft intermediate said top and bottom ends and dividing said ladder into top and bottom end portions, and a bracket adapted to be secured near the top edge of the transom of a boat for supporting said ladder angularly inclined with respect to the transom with the bottom end portion of the ladder extending in a downwardly diverging direction with respect to the transom and with said top end portion extending above and over the top edge of the transom, said ladder having sets of laterally extending opposite rungs spaced along the bottom portion of the ladder, and a single rung laterally extending from one side of said ladder providing a handle near the top end of the ladder.
Claim 5
Dependent Claim
87 words
The combination according to claim 1 wherein said bracket includes a butt plate adapted to abut the transom, means for securing said butt plate to said transom, a bed plate for supporting said ladder shaft and means rigidly supporting said bed plate in angularly inclined relationship with respect to said butt plate, said bed plate having a free end extension tab projecting above said butt plate, said bracket engaging means comprising means for interlocking with said tab and rigidly holding said ladder shaft on said bed plate.
Claim 6
Dependent Claim
34 words
The combination according to claim 2 wherein said bed plate is inclined with respect to said butt plate at an included angle selected within the range of about 35* degrees to about 40* degrees.
Claim 7
Dependent Claim
75 words
The combination set forth in claim 2 wherein said means rigidly supporting said bed plate includes a pair of spaced, parallel gusset plates rigidly joined perpendicular to said butt plate, said bed plate being included between said gusset plate and rigidly secured to said gusset plates with the gusset plates extending above the upper surface of the bed plate to provide a channel which is adapted to closely engage three sides of the ladder shaft.
Claim 8
Dependent Claim
23 words
The combination set forth in claim 2 wherein said means for securing said butt plate to said transom includes an adjustable screw clamp.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |