US3893407A — Inboard-outboard marine drive

Claim 1

Independent Claim 110 words

In an inboard-outboard marine drive unit for boats having an inboard engine connected to an outboard power leg through drive shaft means and universal joint means, the improvement comprising a yoke member having a generally upwardly extending center post directed oppositely from generally downwardly extending laterally spaced yoke arms, means pivotally mounting the power leg to the yoke arms about an axis to allow the power leg to be rotated upwardly and rearwardly for trimming, tilting and kick-up, and means pivotally connecting the upwardly extending center post of the yoke to the boat about an axis to allow the yoke and power leg to rotate laterally for steering the boat.

Claim 2

Dependent Claim 110 words

In an inboard-outboard marine drive unit for boats having an inboard engine connected to an outboard power leg through drive shaft means and universal joint means, the improvement comprising a yoke member having a generally upwardly extending center post directed oppositely from generally downwardly extending laterally spaced yoke arms, means pivotally mounting the power leg to the yoke arms about an axis to allow the power leg to be rotated upwardly and rearwardly for trimming, tilting and kick-up, and means pivotally connecting the upwardly extending center post of the yoke to the boat about an axis to allow the yoke and power leg to rotate laterally for steering the boat.

Claim 3

Dependent Claim 42 words

The inboard-outboard drive unit according to claim 1 wherein the yoke member is carried by the boat so as to position the axis of the post at the horizontal drive center line inboard of the aft side of the boat stern transom.

Claim 4

Dependent Claim 30 words

The unit according to claim 2 wherein the yoke member is carried such that the axis through the yoke arms is also inboard of aft side of the stern transom.

Claim 5

Dependent Claim 29 words

The inboard-outboard drive unit according to claim 1 including means in addition to the yoke member for connecting the power leg to the boat below the universal joint means.

Claim 6

Dependent Claim 69 words

The unit according to claim 4 wherein the means connecting the power leg to the boat includes a lower support means pivotally attached to the boat for turning on a steering axis corresponding to that for the outboard power leg and hydraulic cylinder means extending between the lower support means and the power leg for raising and lowering the power leg about the axis provided at the yoke arm.

Claim 7

Dependent Claim 36 words

The unit according to claim 5 wherein the lower support means further includes a pair of spaced lateral side members for receiving at least a portion of the power leg therebetween and providing lateral support thereto.

Claim 8

Dependent Claim 120 words

In an article of manufacture for use with an inboard engine and rearwardly extending flexible drive means in a boat, an outboard power leg including propeller means adapted for connection to the flexible drive means, a downwardly disposed yoke member positioned forward of the power leg and comprising an upwardly extending center post and a pair of laterally spaced yoke arms extending downwardly from the center leg for carrying the drive means thereon, first pivot means mounting the power leg to the yoke arms for movement of the power leg about a generally horizontal axis, and second pivot means adapted for mounting the post of the yoke to the boat for lateral steering movement of the yoke and power leg.

Claim 9

Dependent Claim 120 words

In an article of manufacture for use with an inboard engine and rearwardly extending flexible drive means in a boat, an outboard power leg including propeller means adapted for connection to the flexible drive means, a downwardly disposed yoke member positioned forward of the power leg and comprising an upwardly extending center post and a pair of laterally spaced yoke arms extending downwardly from the center leg for carrying the drive means thereon, first pivot means mounting the power leg to the yoke arms for movement of the power leg about a generally horizontal axis, and second pivot means adapted for mounting the post of the yoke to the boat for lateral steering movement of the yoke and power leg.

Claim 10

Dependent Claim 150 words

In an inboard-outboard drive in combination with a boat having a transom and an inboard engine with a drive means extending rearwardly from the engine through the transom, an outboard power leg including power transmission means connected to the drive means including a double universal joint interconnecting the engine drive shaft and the power transmission means of the power leg, a propeller at the lower end of the power leg driven by the power transmission means, a mounting member fixedly associated with the boat between the engine And the power leg, an inverted yoke comprising an upwardly extending center post and a pair of downwardly extending laterally spaced arms, means pivotally connecting the center post of the yoke to the mounting member above the working center of the double universal joint, and means pivotally connecting the power leg to the yoke arms for fore and aft swinging of the leg.

Claim 11

Dependent Claim 150 words

In an inboard-outboard drive in combination with a boat having a transom and an inboard engine with a drive means extending rearwardly from the engine through the transom, an outboard power leg including power transmission means connected to the drive means including a double universal joint interconnecting the engine drive shaft and the power transmission means of the power leg, a propeller at the lower end of the power leg driven by the power transmission means, a mounting member fixedly associated with the boat between the engine And the power leg, an inverted yoke comprising an upwardly extending center post and a pair of downwardly extending laterally spaced arms, means pivotally connecting the center post of the yoke to the mounting member above the working center of the double universal joint, and means pivotally connecting the power leg to the yoke arms for fore and aft swinging of the leg.

Claim 12

Dependent Claim 22 words

The combination according to claim 8 including means in addition to the yoke member, for connecting the power leg to the boat.

Claim 13

Dependent Claim 28 words

The combination according to claim 8 wherein the center post of the yoke member is received by the mounting member inboard the aft side of the boat transom.

Claim 14

Dependent Claim 22 words

The combination according to claim 10 wherein the entire yoke member is positioned inboard of the aft side of the boat transom.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-07-07	1979-01-06	1979-07-08	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-07-07	1983-01-06	1983-07-08	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-07-07	1987-01-06	1987-07-08	$7700.00	Window Closed / Lapsed

Inboard-outboard marine drive

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