Abstract Relates to attachments to a motor boat for reducing the speed of the boat below the idling speed sufficient to permit trolling for fish. The speed controlling device includes a plate member mounted for movement from a vertical position immediately aft of the propeller and across the path of the propeller wash, thereby to slow the speed of the boat, to a second position away from the propeller and out of the path of the propeller wash. Hydraulic mechanism including a piston-cylinder combination unit is connected to a fixed support, such as the propulsion unit of the boat, and to the plate member for moving the latter between the aforesaid two positions of movement. Ports are provided in the cylinder for admitting fluid under pressure to either side of the piston to impart movement of the piston in either direction in the cylinder and to impart corresponding movement to the plate member. A rotary hydraulic pump is driven by a reversible electric motor to provide not only the source of fluid pressure for moving the piston plate member but also the port in the cylinder into which the fluid pressure is introduced for determining the direction of movement of the piston. A three-position electric switch is provided for controlling the operation of the electric motor either in one or the other of its two directions of rotation or for rendering the motor inoperative.
Inventors
👤 Irvin E. Fedorko
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-05 03:54
CPC Classifications
B; B63; B63H; B63H25/00; B63H25/48
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
229 words
A trolling device adapted to be mounted on the movably supported outboard housing of a boat's propulsion unit, which housing has an upper mounting pivot and a lower and rearwardly disposed mounting pivot, comprising, in combination: a trolling plate; means for hinging the plate on the lower and rearwardly disposed mounting pivot of the outboard housing for swinging movement between a vertical position confronting the wash of a propeller on the housing and a horizontal position disposed out of the path of the propeller wash; an elongated longitudinally extensible and contractable remotely operable powering unit; means for connecting one end of the powering unit to the upper mounting pivot of the housing and means for connecting the opposite end of the powering unit to said plate whereby all forces of extension or contraction of the powering unit are between said upper mounting pivot on the housing and the trolling plate; a source of power adapted to be mounted in the boat and including flexible power delivering means extending out of the boat and to said powering unit on the housing for delivering the power thereto; and control means adapted to be mounted in the boat for manipulation by the boat operator for controlling delivery of power from said source to said powering unit to cause the same to be extended or contracted to lower or raise the trolling plate.
Claim 2
Dependent Claim
229 words
A trolling device adapted to be mounted on the movably supported outboard housing of a boat's propulsion unit, which housing has an upper mounting pivot and a lower and rearwardly disposed mounting pivot, comprising, in combination: a trolling plate; means for hinging the plate on the lower and rearwardly disposed mounting pivot of the outboard housing for swinging movement between a vertical position confronting the wash of a propeller on the housing and a horizontal position disposed out of the path of the propeller wash; an elongated longitudinally extensible and contractable remotely operable powering unit; means for connecting one end of the powering unit to the upper mounting pivot of the housing and means for connecting the opposite end of the powering unit to said plate whereby all forces of extension or contraction of the powering unit are between said upper mounting pivot on the housing and the trolling plate; a source of power adapted to be mounted in the boat and including flexible power delivering means extending out of the boat and to said powering unit on the housing for delivering the power thereto; and control means adapted to be mounted in the boat for manipulation by the boat operator for controlling delivery of power from said source to said powering unit to cause the same to be extended or contracted to lower or raise the trolling plate.
Claim 3
Dependent Claim
17 words
The invention defined by claim 1 wherein the powering unit comprises a fluid pressure cylinder and piston.
Claim 4
Dependent Claim
29 words
The invention defined by claim 2 wherein said source of power in the boat is an electric-hydraulic pump, and said flexible power delivering means comprise flexible hydraulic pressure hoses.
Claim 5
Dependent Claim
19 words
The invention defined by claim 3 wherein said control means comprises an electric reversing switch for the electric-hydraulic pump.
Claim 6
Dependent Claim
29 words
The invention defined by claim 3 wherein said control means includes valve means for selectively blocking the flow of fluid pressure into or out of the fluid pressure cylinder.
Claim 7
Dependent Claim
46 words
The invention defined by claim 1 wherein said trolling plate includes upstanding ear means thereon disposed substantially perpendicular to the plane of the plate, and said means for connecting the powering unit to the plate comprises an adjustable end portion pivotally connected to the ear means.
Claim 8
Dependent Claim
90 words
The invention defined by claim 1 wherein said trolling plate includes a pair of opposed spaced apart side walls adapted to overlie opposite sides of the lower and rearwardly disposed mounting pivot of the housing, said side walls provided with opposed circular apertures and at least one side wall having a slot opening from the aperture through an edge of the side wall, and bushing means nestable in the apertures and adapted to be mounted on a pivot shaft secured in the lower and rearward mounting pivot of the housing.