← Back to Patent Explorer
US3870339A Expired / Lapsed US ⏱️ 0.0 years remaining

Multi-purpose tandem trailer

Assignee: Individual
•
Filing: 1974-05-22
•
Granted: 1975-03-11
•
Expires: 1994-05-22
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A multi-purpose tandem trailer having utility for transporting and storing two or more boats, for transporting or storing a camper top and a boat, for transporting a plurality of motorcycles, or for carrying luggage or other bulky items. The trailer comprises two support structures, the first support structure having wheels mounted thereon and having means for connecting said first support structure with a pulling or towing vehicle. The second support structure is similar to the first support structure with the significant exception of being movable through a plurality of fixed positions in a vertical plane. The adjustability of the second support structure allows the tandem trailer to be aerodynamically stable when being pulled even at high speeds.

Inventors

  • 👤 Jerry J Goff

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 15:31
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/10; B60P3/1033; B60P3/08; B60P3/105

Claims Analysis

Total Claims: 23
Claim 1
Independent Claim 166 words
A tandem multi-purpose trailer for transporting and storing at least two boats comprising: a. a first support structure, said first support structure having means mounted thereon for carrying and securing a boat in a fixed position; b. a second support structure, said second support structure being movable from a lower position immediately above said first support structure to a raised position of from about 3 inches to about 7 feet above said lower position, said second support structure having means for carrying and securing a boat in a fixed position; c. a plurality of vertical guide members, said guide members having means for allowing said second support structure to move from said lower position to said raised position; d. means for raising and lowering said second support structure along said guide members; and e. a tongue assembly, said tongue assembly connecting said first support structure to the vehicle pulling the trailer, said tongue assembly having mounted thereon means for fixedly attaching said trailer to said vehicle.
Claim 2
Dependent Claim 166 words
A tandem multi-purpose trailer for transporting and storing at least two boats comprising: a. a first support structure, said first support structure having means mounted thereon for carrying and securing a boat in a fixed position; b. a second support structure, said second support structure being movable from a lower position immediately above said first support structure to a raised position of from about 3 inches to about 7 feet above said lower position, said second support structure having means for carrying and securing a boat in a fixed position; c. a plurality of vertical guide members, said guide members having means for allowing said second support structure to move from said lower position to said raised position; d. means for raising and lowering said second support structure along said guide members; and e. a tongue assembly, said tongue assembly connecting said first support structure to the vehicle pulling the trailer, said tongue assembly having mounted thereon means for fixedly attaching said trailer to said vehicle.
Claim 3
Dependent Claim 166 words
A tandem multi-purpose trailer for transporting and storing at least two boats comprising: a. a first support structure, said first support structure having means mounted thereon for carrying and securing a boat in a fixed position; b. a second support structure, said second support structure being movable from a lower position immediately above said first support structure to a raised position of from about 3 inches to about 7 feet above said lower position, said second support structure having means for carrying and securing a boat in a fixed position; c. a plurality of vertical guide members, said guide members having means for allowing said second support structure to move from said lower position to said raised position; d. means for raising and lowering said second support structure along said guide members; and e. a tongue assembly, said tongue assembly connecting said first support structure to the vehicle pulling the trailer, said tongue assembly having mounted thereon means for fixedly attaching said trailer to said vehicle.
Claim 4
Dependent Claim 166 words
A tandem multi-purpose trailer for transporting and storing at least two boats comprising: a. a first support structure, said first support structure having means mounted thereon for carrying and securing a boat in a fixed position; b. a second support structure, said second support structure being movable from a lower position immediately above said first support structure to a raised position of from about 3 inches to about 7 feet above said lower position, said second support structure having means for carrying and securing a boat in a fixed position; c. a plurality of vertical guide members, said guide members having means for allowing said second support structure to move from said lower position to said raised position; d. means for raising and lowering said second support structure along said guide members; and e. a tongue assembly, said tongue assembly connecting said first support structure to the vehicle pulling the trailer, said tongue assembly having mounted thereon means for fixedly attaching said trailer to said vehicle.
Claim 5
Dependent Claim 18 words
The mulit-purpose trailer of claim 1 wherein said first support structure has a plurality of wheels mounted thereon.
Claim 6
Dependent Claim 15 words
The tandem multi-purpose trailer of claim 1 wherein said trailer has a separate brake system.
Claim 7
Dependent Claim 16 words
The tandem multi-purpose trailer of claim 3 wherein said brake system is an electric brake system.
Claim 8
Dependent Claim 16 words
The tandem multi-purpose trailer of claim 3 wherein said brake system is a hydraulic brake system.
Claim 9
Dependent Claim 52 words
The tandem multi-purpose vehicle of claim 1 wherein said means for carrying and securing a boat in a fixed position comprise: a. a plurality of guide wheels in the center of said first support structure, and b. a pair of boards for securing said boat in proper alignment during loading and traveling.
Claim 10
Dependent Claim 21 words
The tandem multi-purpose trailer of claim 1 wherein said means for raising and lowering said second support structure is a winch.
Claim 11
Dependent Claim 20 words
The tandem multi-purpose trailer of claim 7 wherein said winch is mounted underneath the frontmost end of said tongue assembly.
Claim 12
Dependent Claim 50 words
The tandem multi-purpose trailer of claim 1 wherein said guide members contain a plurality of holes at intervals of from about 2 inches to about 6 inches whereby said second support structure can be locked in a plurality of raised positions between said lower position and the maximum raised position.
Claim 13
Dependent Claim 28 words
The tandem multi-purpose trailer of claim 1 wherein said guide members have runners attached thereto, said runners being receptive to sliding members mounted on said second support structures.
Claim 14
Dependent Claim 40 words
The tandem multi-purpose trailer of claim 1 wherein said tongue assembly is telescoped so as to be lockable in an extended position, a shortened position or any position in between in order to facilitate convenient entrance and exit from water.
Claim 15
Dependent Claim 14 words
The tandem multi-purpose trailer of claim 1 wherein said first support structure is adjustable.
Claim 16
Dependent Claim 17 words
The tandem multi-purpose trailer of claim 1 wherein a camper is mounted on said second support structure.
Claim 17
Dependent Claim 217 words
A tandem multi-purpose trailer for transporting and storing at least two boats comprising: a. a first support structure, said first support structure having means mounted thereon for carrying and securing a boat in a fixed position; said first support structure being mounted on a plurality of wheels, said wheels having a hydraulic brake system; b. a second support structure, said second support structure being movable from a lower position immediately above said first support member to a plurality of raised positions, each of said raised positions being from about 2 inches to about 6 inches higher than the preceding raised posiTion, the maximum raised, position being from about 3 feet to about 7 feet above said lower position, said second support structure having means for carrying and securing a boat in a fixed position; c. a plurality of vertical guide members, said guide members having means for allowing said second support structure to move from said lower position, through all said raised positions to the maximum raised position; d. a tongue assembly, said tongue assembly connecting said first support structure to the vehicle pulling said trailer, said tongue assembly having mounted thereon means for fixedly attaching said trailer to said vehicle; and e. winch means for raising and lowering said second support structure along said guide members.
Claim 18
Dependent Claim 217 words
A tandem multi-purpose trailer for transporting and storing at least two boats comprising: a. a first support structure, said first support structure having means mounted thereon for carrying and securing a boat in a fixed position; said first support structure being mounted on a plurality of wheels, said wheels having a hydraulic brake system; b. a second support structure, said second support structure being movable from a lower position immediately above said first support member to a plurality of raised positions, each of said raised positions being from about 2 inches to about 6 inches higher than the preceding raised posiTion, the maximum raised, position being from about 3 feet to about 7 feet above said lower position, said second support structure having means for carrying and securing a boat in a fixed position; c. a plurality of vertical guide members, said guide members having means for allowing said second support structure to move from said lower position, through all said raised positions to the maximum raised position; d. a tongue assembly, said tongue assembly connecting said first support structure to the vehicle pulling said trailer, said tongue assembly having mounted thereon means for fixedly attaching said trailer to said vehicle; and e. winch means for raising and lowering said second support structure along said guide members.
Claim 19
Dependent Claim 52 words
The tandem multi-purpose vehicle of claim 14 wherein said means for carrying and securing a boat in a fixed position comprise: a. a plurality of guide wheels in the center of said first support structure, and b. a pair of boards for securing said boat in proper alignment during loading and traveling.
Claim 20
Dependent Claim 28 words
The tandem multi-purpose trailer of claim 14 wherein said guide members have runners attached thereto, said runners being receptive to sliding members mounted on said second support structure.
Claim 21
Dependent Claim 40 words
The tandem multi-purpose trailer of claim 14 wherein said tongue assembly is telescoped so as to be lockable in an extended position, a shortened position or any position in between in order to facilitate convenient entrance and exit from water.
Claim 22
Dependent Claim 14 words
The tandem multli-purpose trailer of claim 14 wherein said first support structure is adjustable.
Claim 23
Dependent Claim 17 words
The tandem multi-purpose trailer of claim 14 wherein a camper is mounted on said second support structure.

References Cited (Backward Citations)

US2358537A Cited
US2847136A Cited
US3449010A Cited
US3486786A Cited
US3718227A Cited

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

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag