US4443202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface propeller mounting assembly for boats
Assignee: Individual
•
Filing: 1981-05-29
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Granted: 1984-04-17
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Expires: 2001-05-29
Abstract
Abstract A unitary assembly (10) for mounting a surface propeller (52) on the transom (T) of a boat hull (H). The assembly comprises a plate (12) for attachment to the hull (H); a prop shaft support (16) fixed to the plate (12) for juxtaposition against the transom (T); and, a rudder support arm (20) fixed to the plate (12) and extending rearwardly therefrom above and in spaced relationship to the shaft support (16). As a result of its unitary construction, the assembly provides for ready attachment of a surface prop to a hull without major hull modification or the necessity of aligning separate shaft bearing supports and rudder elements. In its preferred embodiment, the assembly also includes a propeller hood supported by the arm and a spray deflector at the aft end of the hood.
Inventors
- 👤 Daniel J. Arena
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:15
CPC Classifications
B; B63; B63H; B63H25/00; B63H25/06; B63H25/08; B63H25/14; B63H5/00; B63H5/07; B63H5/16; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/18; B63H2001/185; B63H2025/066; B63H25/18; B63H25/22; B63H5/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
243 words
A unitary assembly for mounting a surface prop on the transom of a boat hull in a position wherein, when the hull is planing on the surface of a body of water, the prop intersects the surface to the rear of the hull, said assembly comprising: a mounting plate adapted to be fixedly secured to the transom; a vertically extending prop shaft support fixed to the plate for juxtaposition against the transom upon securing the plate to the transom, said support carrying prop shaft bearing means to rotatably support a prop shaft extending through the transom, said vertically extending prop shaft support including a web-like portion extending below said prop shaft; a rudder support arm fixed to the plate and extending rearwardly therefrom above the prop shaft support, said arm carrying a rudder bearing; and, a hood carried by said plate and extending rearwardly therefrom so as to extend over and partially around the top of a prop carried by said prop shaft supported by said bearing means, said hood having a forward end intersecting the plate at a juncture above the shaft support, wherein the hood extends from the plate and has an undersurface of a generally concave configuration transverse to the longitudinal axis of said prop shaft so as to define a water channel above said prop when the hull upon which the assembly is mounted is supported in a non-planing start-up condition on the surface of a body of water.
Claim 2
Dependent Claim
243 words
A unitary assembly for mounting a surface prop on the transom of a boat hull in a position wherein, when the hull is planing on the surface of a body of water, the prop intersects the surface to the rear of the hull, said assembly comprising: a mounting plate adapted to be fixedly secured to the transom; a vertically extending prop shaft support fixed to the plate for juxtaposition against the transom upon securing the plate to the transom, said support carrying prop shaft bearing means to rotatably support a prop shaft extending through the transom, said vertically extending prop shaft support including a web-like portion extending below said prop shaft; a rudder support arm fixed to the plate and extending rearwardly therefrom above the prop shaft support, said arm carrying a rudder bearing; and, a hood carried by said plate and extending rearwardly therefrom so as to extend over and partially around the top of a prop carried by said prop shaft supported by said bearing means, said hood having a forward end intersecting the plate at a juncture above the shaft support, wherein the hood extends from the plate and has an undersurface of a generally concave configuration transverse to the longitudinal axis of said prop shaft so as to define a water channel above said prop when the hull upon which the assembly is mounted is supported in a non-planing start-up condition on the surface of a body of water.
Claim 3
Dependent Claim
16 words
An assembly according to claim 1 wherein the hood is supported on the rudder support arm.
Claim 4
Dependent Claim
35 words
An assembly according to claim 2 wherein the hood terminates in a free distal end spaced from the plate, said assembly further comprising a deflector carried by the arm and extending across said distal end.
Claim 5
Dependent Claim
31 words
An assembly according to claim 3 further including means to selectively adjust the position of the deflector relative to the prop carried by said prop shaft supported by said bearing means.
Claim 6
Dependent Claim
44 words
An assembly according to claim 1 wherein the prop shaft bearing means is elongated and extends rearwardly from the plate, the improvement wherein the prop shaft support further comprises an elongated generally vertically disposed web support fixedly interconnecting the bearing means, plate and arm.
Claim 7
Dependent Claim
35 words
An assembly according to claim 1 further comprising lateral extensions on the hood disposed to extend across the transom of a boat to which the assembly is connected to provide a water skier support step.
Claim 8
Dependent Claim
56 words
An assembly according to claim 1 further comprising: a skeg fixed to the plate and extending rearwardly therefrom so as to be disposed beneath said prop carried by said prop shaft supported by the prop shaft bearing means; and, a rudder bearing carried by said skeg in alignment with the rudder bearing carried by the arm.
Claim 9
Dependent Claim
45 words
An assembly according to claim 7 wherein the prop shaft bearing means is elongated and extends rearwardly from the plate, the improvement wherein the prop shaft support further comprises an elongated generally vertically disposed web support fixedly interconnecting the bearing means, plate, skeg and arm.
Claim 10
Dependent Claim
61 words
An assembly according to claim 1 wherein: two prop shaft supports carry a pair of bearing means to rotatably support a pair of transversely spaced prop shafts extending through the transom; and the hood is disposed so as to extend over and partially around the top of said props carried by said prop shafts supported by both of said bearing means.
Claim 11
Dependent Claim
19 words
An assembly according to claim 9 wherein the rudder bearing is disposed rearwardly of and between the bearing means.
Claim 12
Dependent Claim
209 words
In combination with a boat hull having a transom terminating in a lower edge at the bottom of the hull; a surface prop assembly for supporting a prop in intersecting relationship with the surface of a body of water upon which the hull is planing, said assembly comprising: a mounting plate fixedly secured to the transom above and adjacent the lower edge thereof; a vertically extending prop shaft support carried by the plate to rotatably support a prop shaft extending through the transom, said vertically extending prop shaft support including a web-like portion extending below said prop shaft; a hood fixed to the transom at a juncture above the prop shaft support, said hood being concave transverse to the longitudinal axis of said prop shaft and extending rearwardly from the transom in upwardly spaced relationship to the support to define a water channel above and partially around the sides of a prop carried by a shaft supported by the support, when the hull is in a non-planing start-up condition on the surface of a body of water, said hood and juncture being so spaced from the lower edge of the transom as to be elevated above the surface of a body of water upon which the hull is planing.
Claim 13
Dependent Claim
209 words
In combination with a boat hull having a transom terminating in a lower edge at the bottom of the hull; a surface prop assembly for supporting a prop in intersecting relationship with the surface of a body of water upon which the hull is planing, said assembly comprising: a mounting plate fixedly secured to the transom above and adjacent the lower edge thereof; a vertically extending prop shaft support carried by the plate to rotatably support a prop shaft extending through the transom, said vertically extending prop shaft support including a web-like portion extending below said prop shaft; a hood fixed to the transom at a juncture above the prop shaft support, said hood being concave transverse to the longitudinal axis of said prop shaft and extending rearwardly from the transom in upwardly spaced relationship to the support to define a water channel above and partially around the sides of a prop carried by a shaft supported by the support, when the hull is in a non-planing start-up condition on the surface of a body of water, said hood and juncture being so spaced from the lower edge of the transom as to be elevated above the surface of a body of water upon which the hull is planing.
Claim 14
Dependent Claim
38 words
In a combination according to claim 11, the assembly wherein the hood terminates in a free distal end spaced from the plate, said assembly further comprising a deflector carried by the hood and extending across said distal end.
Claim 15
Dependent Claim
32 words
In a combination according to claim 12, the assembly further including means to selectively adjust the position of the deflector relative to said prop carried by said shaft supported by the support.
Claim 16
Dependent Claim
27 words
In a combination according to claim 11, the assembly further comprising a rudder support arm fixed to the transom and extending rearwardly therefrom above the shaft support.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |