Land vehicles – Runner vehicle – Multiple sled
Reexamination Certificate
2000-08-31
2002-04-02
Culbreth, Eric (Department: 3611)
Land vehicles
Runner vehicle
Multiple sled
C280S011180, C280S018000
Reexamination Certificate
active
06364324
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a sled that is adapted to be pulled by a snowmobile.
Sleds with different types of construction have been towed by snowmobiles. Some such sleds have been specifically designed for a given purpose, like an ambulance sled while other sleds may be used to haul passengers, goods, or any combination of these persons and objects. For example, one prior art sled used for an ambulance has a tow bar attached to the front steerable ski of the sled. Another sled is self up righting and has a tow rope attached below the sled's center of gravity.
One prior art sled is constructed of heavy gauge low density polyethylene material having a molecular memory. Still another sled has both a wind screen and a removable cover. Various sled configurations with tow rigid bars, articulated hitches, tow ropes and other characteristics are also known and described in a publication.
DESCRIPTION OF THE PRIOR ART
Sleds that are designed to be towed by a snowmobile are known. For example, in the U.S. Pat. No. 3,746,357 to Haskins there is disclosed a sled used for an ambulance which has a tow bar attached to the front steerable ski of the sled.
U.S. Pat. No. 3,937,482 to Johnson discloses a sled that is self up righting and has a tow rope attached below the sled's center of gravity.
U.S. Pat. No. 4,046,393 to Vadnais discloses a sled constructed of heavy gauge low density polyethylene material having a molecular memory.
U.S. Pat. No. 4,389,066 to Weir et al. discloses a sled with both a wind screen and a removable cover.
The publication entitled “Hitch & Haul” by Boggans discloses sled configurations with tow rigid bars, articulated hitches, tow ropes and other characteristics.
In the present invention a snowmobile's tow sled has outside runners that are used to hold the tracking straight, plates attached to the outside runners and down straps for securing items to the sled all as will be detailed in the specification that follows hereafter.
SUMMARY OF THE INVENTION
This invention relates to a tow sled used with a snowmobile that has specially constructed outside runners and related side plates.
It is the primary object of the present invention to provide for the improved construction of a tow sled used with a snowmobile.
Another object is to provide for such a tow sled in which there are, outside runners with steel ice engaging side plates on the back of the outside runners.
Still another object is an improved drawbar and hitch.
REFERENCES:
patent: 3319972 (1967-05-01), Gallaher
patent: 3372944 (1968-03-01), Lauritzen
patent: 3432182 (1969-03-01), Solipasso
patent: 3453000 (1969-07-01), Asher
patent: 3565452 (1971-02-01), Trumley et al.
patent: 3746357 (1973-07-01), Haskins
patent: 3921239 (1975-11-01), Sovia et al.
patent: 3924871 (1975-12-01), Mesenbring
patent: 3937482 (1976-02-01), Johnson
patent: 4046393 (1977-09-01), Vadnais
patent: 4083577 (1978-04-01), Ford
patent: 4239247 (1980-12-01), Hinz
patent: 4304418 (1981-12-01), Foster
patent: 4389066 (1983-06-01), Weir et al.
patent: 4524984 (1985-06-01), Axelson
patent: 5242176 (1993-09-01), Hendrickson
patent: 5263745 (1993-11-01), Storey
patent: 5868405 (1999-02-01), Lavecchia
patent: 6017043 (2000-01-01), Bennett et al.
patent: D433474 (2000-11-01), Puyo
Updated Publication, Hitch & Haul, Boggans by Equinox Industries, 12 pages.
Bottorff Christopher
Culbreth Eric
McGlynn Joesph H.
Patent & Trademark Services
Zack Thomas
LandOfFree
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