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 Title: |
US3666020:
DRAGS FOR SNOWMOBILE TRAILS
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| Country: |
US United States of America
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| Inventor: |
Hess, Robert V.; Deerbrook, WI 54424
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| Assignee: |
None
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| Published / Filed: |
1972-05-30
/ 1970-11-18
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| Application Number: |
US1970000090619
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| IPC Code: |
Advanced:
A01B 31/00;
E01H 4/02;
Core:
E01H 4/00;
more...
IPC-7:
A01B 31/00;
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| ECLA Code: |
A01B31/00; E01H4/02;
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| U.S. Class: |
Current:
172/612;
015/236.06;
037/219;
172/189;
172/200;
172/684.5;
Original:
172/612;
172/189;
172/200;
037/041;
015/236.R;
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| Field of Search: |
172/612,613,682,685,687,733,765-767,771,200,189
037/041,123
015/236 R
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| Priority Number: |
| 1970-11-18 |
US1970000050906 |
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| Abstract: |
Apparatus for leveling and conditioning snowmobile trails having a substantially rigid elongate frame assembly and a series of resilient snow gathering and distributing scoops formed from sectors of pneumatic tire casings depending from the frame.
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| Attorney, Agent or Firm: |
Werner, Joseph G. ;
Long, Theodore J. ;
Winter, John M. ;
Kemmeter, James A. ;
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| Primary / Asst. Examiners: |
Pulfrey, Robert E.; Eickholt, Eugene H.
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| Family: |
None
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| Claim |
1. A drag for snowmobile trails comprising:
- a. a substantially rigid elongate frame assembly, and
- b. A series of resilient snow leveling scoops each comprising an arcuate sector of at least about 90° and not more than about 180° of a pneumatic tire casing divided through the bottom tread portion thereof along a plane extending transversely to the axis of said tire casing, said series of snow leveling scoops being spaced along the length of said frame assembly with the sidewall portion of each of said sectors of tire casings forming said snow leveling scoops secured to the underside of said frame assembly and having the bottom tread portion extending in depending relation from the rear edge of said sidewall portion.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
Show drawing descriptions
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| Description: |
Show description
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| Forward References: |
Show 14 U.S. patent(s) that reference this one
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