Patent US4706983A successfully refreshed from Google Patents.
US4706983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Assembly for towing a boat
Assignee: Individual
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Filing: 1986-03-13
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Granted: 1987-11-17
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Expires: 2006-03-13
Abstract
Abstract An assembly for towing a boat includes a pair of channel members mounted on the transom of the boat and a towing socket fastened to the prow of the boat for attachment to a tow ball formed as part of an upstanding hitch carried on a tow vehicle. A pair of leaf spring supports each carry wheels and stub axles and are pinned to the channel members by means of pivot pins and other removable pins which hold the supports firmly in the channels when the removable pins are in place, which holds the wheels firmly in the lowered position for towing and which permit the supports and wheels to be rotated around the pivot pins to store the wheels when the removable pins are removed. Each of the stub axles includes a hollow extension which supports at its outboard end a rod or shaft serving as a stabilizing bar and the stabilizing bars are held in axial alignment by means of a stabilizing retaining tube supporting the stabilizing bars at their inboard ends.
Inventors
- 👤 Wayne D. Griswold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:28
CPC Classifications
B; B63; B63C; B63C13/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
279 words
An assembly for towing a boat behind a vehicle, said vehicle including a towing hitch having an upstanding post, said boat including connecting means at its prow for attachment to said hitch, and a transom, characterized in that the rear of said boat is supported on a carriage comprising a pair of spaced, vertically oriented channel members attached to said transom and extending essentially the height of said transom, a pivot pin extending through the sides of each of said channel members at the top of said channel members and a removable pin extending through the flanges of each of said channel members near the lower end thereof, first and second elongated leaf spring supports carried in respective channel members and extending a substantial distance below said channel members and curving toward the rear relative to forward motion of said boat, said supports each having a sleeve at each end thereof, with said pivot pins extending through the upper ones of said sleeves, a pair of stub axles and highway wheels supported on said axles with each of said axles carried in the lower ones of said sleeves, said axles extending a substantial distance inwardly of said leaf spring supports, a removable stabilizing extension member coaxially connected between the extensions of said stub axles permitting limited axial movement of said wheels while preventing shimmying movement of said wheels, such that when said removable pins are in place, said leaf spring supports are confined and said wheels remain below and support said boat and when said removable pins are removed, said leaf spring supports are permitted to pivot around said pivot pins to a second position substantially within the boat.
Claim 2
Dependent Claim
279 words
An assembly for towing a boat behind a vehicle, said vehicle including a towing hitch having an upstanding post, said boat including connecting means at its prow for attachment to said hitch, and a transom, characterized in that the rear of said boat is supported on a carriage comprising a pair of spaced, vertically oriented channel members attached to said transom and extending essentially the height of said transom, a pivot pin extending through the sides of each of said channel members at the top of said channel members and a removable pin extending through the flanges of each of said channel members near the lower end thereof, first and second elongated leaf spring supports carried in respective channel members and extending a substantial distance below said channel members and curving toward the rear relative to forward motion of said boat, said supports each having a sleeve at each end thereof, with said pivot pins extending through the upper ones of said sleeves, a pair of stub axles and highway wheels supported on said axles with each of said axles carried in the lower ones of said sleeves, said axles extending a substantial distance inwardly of said leaf spring supports, a removable stabilizing extension member coaxially connected between the extensions of said stub axles permitting limited axial movement of said wheels while preventing shimmying movement of said wheels, such that when said removable pins are in place, said leaf spring supports are confined and said wheels remain below and support said boat and when said removable pins are removed, said leaf spring supports are permitted to pivot around said pivot pins to a second position substantially within the boat.
Claim 3
Dependent Claim
39 words
An assembly for towing a boat as claimed in claim 1 wherein said leaf spring support is sufficiently flexible in the axis of rotation of said wheel to provide resilient support for said boat while it is being towed.
Claim 4
Dependent Claim
41 words
An assembly for towing a boat as claimed in claim 1 wherein said supports are curved rearward approximately the radius of the wheel and wherein said wheels and supports are rotatable such that said wheels may be carried in said boat.
Claim 5
Dependent Claim
40 words
An assembly for towing a boat as claimed in claim 1 wherein after removing said removable pins and said supports have been pivoted to said second position, said pivot pins may be removed for storage of said wheels and supports.
Claim 6
Dependent Claim
185 words
An assembly for supporting the rear of a boat having a transom and which is to be towed over roads, said device including a vertically oriented channel member attached to said transom and extending essentially to the top of said channel, a pivot pin at the top of said channel member and extending through the flanges of said channel member, an elongated leaf spring support carried in said channel member extending a substantial distance below said transom and curving toward the rear relative to forward motion of said boat, said support including a rolled sleeve at its top end with said pivot pin extending through said sleeve, a removable pin extending through the flanges of said channel member near its lower end confining said support member, an axle and a wheel supported on said axle carried at the lwoer end of said leaf spring support at a first position for towing whereby said removable pin may be removed to permit said leaf spring support to be pivoted around said pivot pin to a second position approximately 270° from said first position substantially within the boat.
Claim 7
Dependent Claim
185 words
An assembly for supporting the rear of a boat having a transom and which is to be towed over roads, said device including a vertically oriented channel member attached to said transom and extending essentially to the top of said channel, a pivot pin at the top of said channel member and extending through the flanges of said channel member, an elongated leaf spring support carried in said channel member extending a substantial distance below said transom and curving toward the rear relative to forward motion of said boat, said support including a rolled sleeve at its top end with said pivot pin extending through said sleeve, a removable pin extending through the flanges of said channel member near its lower end confining said support member, an axle and a wheel supported on said axle carried at the lwoer end of said leaf spring support at a first position for towing whereby said removable pin may be removed to permit said leaf spring support to be pivoted around said pivot pin to a second position approximately 270° from said first position substantially within the boat.
Claim 8
Dependent Claim
39 words
An assembly for towing a boat as claimed in claim 5 wherein said leaf spring supports are sufficiently flexible in the axis of rotation of said wheels to provide resilient support for said boat while it is being towed.
Claim 9
Dependent Claim
42 words
An assembly for towing a boat as claimed in claim 5 wherein said support is curved rearward approximately the radius of the wheel and after removing said removable pin, said wheel may be pivoted on said support and stored in said boat.
Claim 10
Dependent Claim
43 words
An assembly for towing a boat as claimed in claim 5 wherein after removing said removable pin and said support has been pivoted to said second position, said pivot pin may be removed for removal and storage of said wheel and said support.
Claim 11
Dependent Claim
260 words
An assembly for towing a boat behind a vehicle having a towing hitch, said boat having a transom and towing means attached to its prow for connection to said hitch, characterized in that the rear of said boat is supported on a carriage comprising a pair of spaced, vertically oriented channel members attached to said transom and extending essentially the height of said transom, a pivot pin extending through the sides of each of said channel members at the top thereof and a removable pin extending through the flanges of each of said channel members near the lower end thereof, first and second elongated leaf spring supports carried in said chennal members and extending a substantial distance below said channel members and and curving toward the rear relative to forward motion of said boat, said supports each having a sleeve at each end thereof, with said pivot pins extending through the upper sleeves, a pair of stub axles and wheels supported on said stub axles with each of said axles carried in the lower sleeves, said axles extending a substantial distance inwardly of said leaf spring supports, a removable stabilizing bar coaxially connected between the extensions of said axles permitting limited axial movement of said wheels while preventing shimmying movement of said wheels, such that when said removable pins are in place, said leaf spring supports are confined and said wheels remain below and support said boat and when said removable pins are removed, said leaf spring supports are permitted to pivot around said pivot pins to a second position.
Claim 12
Dependent Claim
260 words
An assembly for towing a boat behind a vehicle having a towing hitch, said boat having a transom and towing means attached to its prow for connection to said hitch, characterized in that the rear of said boat is supported on a carriage comprising a pair of spaced, vertically oriented channel members attached to said transom and extending essentially the height of said transom, a pivot pin extending through the sides of each of said channel members at the top thereof and a removable pin extending through the flanges of each of said channel members near the lower end thereof, first and second elongated leaf spring supports carried in said chennal members and extending a substantial distance below said channel members and and curving toward the rear relative to forward motion of said boat, said supports each having a sleeve at each end thereof, with said pivot pins extending through the upper sleeves, a pair of stub axles and wheels supported on said stub axles with each of said axles carried in the lower sleeves, said axles extending a substantial distance inwardly of said leaf spring supports, a removable stabilizing bar coaxially connected between the extensions of said axles permitting limited axial movement of said wheels while preventing shimmying movement of said wheels, such that when said removable pins are in place, said leaf spring supports are confined and said wheels remain below and support said boat and when said removable pins are removed, said leaf spring supports are permitted to pivot around said pivot pins to a second position.
Claim 13
Dependent Claim
51 words
A device for towing a boat as claimed in claim 9 wherein said stabilizing bars are supported and retained at their inner ends by means of a stabilizing retaining tube, said tube including a transverse bore therethrough and a removable retaining pin for preventing significant axial movement of said retaining tube.
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) | 1990-11-16 | 1991-05-18 | 1991-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-16 | 1995-05-18 | 1995-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-16 | 1999-05-18 | 1999-11-17 | $7700.00 | Window Closed / Lapsed |