US3632126A - Adjustable keel for snowmobile skis and the like - Google Patents

Adjustable keel for snowmobile skis and the like Download PDF

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Publication number
US3632126A
US3632126A US3632126DA US3632126A US 3632126 A US3632126 A US 3632126A US 3632126D A US3632126D A US 3632126DA US 3632126 A US3632126 A US 3632126A
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keel
runner
portions
plates
slot
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Nelson D Shorrock
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Nelson D Shorrock
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B13/00Sledges with runners
    • B62B13/02Sledges with runners characterised by arrangement of runners
    • B62B13/06Sledges with runners characterised by arrangement of runners arranged in two or more parallel lines
    • B62B13/08Sledges with runners characterised by arrangement of runners arranged in two or more parallel lines with steering devices

Abstract

A slot in the ski enables a keel to extend therethrough. This keel is adjustable vertically in the supports to compensate for wear and to permit adjustment to varying ice and snow conditions.

Description

United States Patent Inventor Nelson D. Shorrock RR. #1, Dryden, Ontario, Canada 7 42,621 June 2, 1970 Jan. 4, 1972 Appl. No. Filed Patented ADJUSTABLE KEEL FOR SNOWMOBILE SKIS AND THE LIKE 1 Claim, 3 Drawing Figs.

0.8. CI 280/28 Int. Cl B62b 17/02 Field of Search 280/28 [5 6] References Cited UNITED STATES PATENTS 1,464,204 8/1923 Knowles 280/ 28 2,741,487 4/1956 Carefoot 280/28 Primary ExaminerBenjamin Hersh Assistant Examiner-Robert R. Song Attorney-Kent & Ade

ABSTRACT: A slot in the ski enables a keel to extend therethrough. This keel is adjustable vertically in the supports to compensate for wear and to pennit adjustment to varying ice and snow conditions.

ADJUSTABLE KEEL FOR SNOWMOBILE SKIS AND THE LIKE This invention relates to new and useful improvements in skis, particularly skis for snowmobiles and similar vehicles. It is well known that such vehicles suffer from side slip when cornering, particularly when the surface is hard packed snow or ice.

Various attempts have been made to provide a central keel for such skis in order to enable it to bite into the surface to a greater or lesser extent thus facilitating the turning action.

However, many of these do not provide adjustment and furthermore they are extremely difficult to attach and manufacture due to the multiplicity of parts normally required.

The present device overcomes all of these disadvantages by providing a very simple ski mounting for the keel which is extremely rigid and is easily adjustable from both ends with the minimum of trouble.

The device is economical in manufacture, simple in construction and otherwise suitable for the purpose for which it is designed.

With the foregoing in view, and such other or further purposes, advantages or novel features as may become apparent from consideration of this disclosure and specification, the present invention consists of, and is hereby claimed to reside in, the inventive concept which is comprised, embodied, embraced, or included in the method, process, construction, composition, arrangement or combination of parts, or new use of any of the foregoing, of which concept, one or more specific embodiments of same are herein exemplified as illustrative only of such concept, reference being had to the accompany Figures in which:

FIG. 1 is a side elevation of one snowmobile ski showing the device in situ.

FIG. 2 is a fragmentary side elevation of the ski and keel per se enlarged in respect to FIG. 1.

FIG. 3 is a sectional view along line 33 of FIG. 2.

In the drawings like characters of reference indicate corresponding parts in the difi'erent figures.

Proceeding therefore to describe the invention in detail, reference character illustrates a conventional snowmobile ski having an upwardly curved end 11 and a bracing handle 12 as clearly shown. Spring mounts or shackles 13 are secured to the upper surface 14 of the ski adjacent the front and rear ends and a leaf spring 15 extends between these mounts in the usual way, king pin 16 mounting the spring and hence the ski to the body of the vehicle and steering mechanism (not illustrated). The portion between the shackles is referred to as the main planar portion.

My assembly collectively designated 17 consists of a keel plate 18, and mounting guides or plates 19, it being understood that a longitudinally extending slot 20 is formed through the main planar portion of the ski centrally of the sides thereof and between the spring mounts 13 but terminating short thereof.

The mount for the keel consists of a pair of elongated side plates 19 mounted in spaced and parallel relationship upon the upper surface 14 of the ski one upon each side of the sidewalls of the slot 20, said plates being welded to the upper surface 14 as indicated by reference character 21.

The keel plate 18 is an elongated relatively thin crosssectioned rectangular member mounted between the plates 19 and movable up and down so that the lower edge 22 thereof extends through the slot and below the under surface 23 of the ski.

The keel 18 is mounted for limited vertical adjustment within the guides or plates 19 by a pair of nut and bolt assemblies 24 which extend through vertical pairs of slots 25 in side plates 19 and through the keel plate 18 as clearly shown. This permits the vertical adjustment of one end or the other of the keel or both as may be desired.

However, I have found it desirable to drop the rear end 26 of the keel slightly below the level of the front end 27 thereof in order to facilitate the keel action.

The keel plate 18 is easily replaceable if worn and is easily adjustable for various running surfaces. Furthermore the attachment of the side plates by welding, to the upper side of the ski, gives the necessary rigidity to the assembly and strengthens the ski itself.

Various modifications can be made within the scope of the inventive concept which is herein disclosed and/or claimed.

What I claim as my invention is:

1. In a ski for snowmobiles and the like, the combination of a onepiece elongated runner having front and rear ends and provided with a central longitudinally extending slot which terminates at points spaced longitudinally inwardly from the respective front and rear ends of the runner so that portions of the runner at the opposite sides of the slot are integrally connected together by the end portions of the runner beyond the ends of the slot, a pair of upstanding horizontally elongated plates secured to the upper surface of said runner at the respective opposite side edges of said slot, the end portions of said plates being provided with transversely aligned vertical slots, an upstanding horizontally elongated keel adjustably positioned between said plates with its lower edge portion projecting below the underside of the runner, and a pair of bolt and nut assemblies extending transversely through the respective end portions of said keel and through the vertical slots in said plates, whereby to retain the keel in position and facilitate independent vertical adjustment of the end portions of the keel relative to the runner.

# i i i i

Claims (1)

1. In a ski for snowmobiles and the like, the combination of a one-piece elongated runner having front and rear ends and provided with a central longitudinally extending slot which terminates at points spaced longitudinally inwardly from the respective front and rear ends of the runner so that portions of the runner at the opposite sides of the slot are integrally connected together by the end portions of the runner beyond the ends of the slot, a pair of upstanding horizontally elongated plates secured to the upper surface of said runner at the respective opposite side edges of said slot, the end portions of said plates being provided with transversely aligned vertical slots, an upstanding horizontally elongated keel adjustably positioned between said plates with its lower edge portion projecting below the underside of the runner, and a pair of bolt and nut assemblies extending transversely through the respective end portions of said keel and through the vertical slots in said plates, whereby to retain the keel in position and facilitate independent vertical adjustment of the end portions of the keel relative to the runner.
US3632126D 1970-06-02 1970-06-02 Adjustable keel for snowmobile skis and the like Expired - Lifetime US3632126A (en)

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718341A (en) * 1971-09-17 1973-02-27 R Westberg Snowmobile anti-skid device
US3778074A (en) * 1972-05-16 1973-12-11 W Kozlow Snowmobile ski
US3785448A (en) * 1972-01-26 1974-01-15 Valmet Oy Device in connection with the steering ski of a vehicle for improving its control
US3857578A (en) * 1974-03-04 1974-12-31 Alton J Equipment Co Ltd Wear bar for a snowmobile ski
US3870331A (en) * 1973-09-12 1975-03-11 Gordon R Cryderman Snowmobile ski anti-skid assembly
US3877713A (en) * 1973-09-04 1975-04-15 Norman H Mabie Keel for snowmobile front skis
US4161323A (en) * 1977-10-03 1979-07-17 Wetteland Maxwell T Snow ski board apparatus
US4869336A (en) * 1987-11-25 1989-09-26 Sumitomo Rubber Industries, Ltd. Snowmobile
US5165709A (en) * 1990-07-03 1992-11-24 Bombardier Inc. Snowmobile ski including runner, sole and stiffener
US5344168A (en) * 1991-11-08 1994-09-06 Polaris Industries, L.P. Snowmobile ski
US5700020A (en) * 1993-08-12 1997-12-23 Noble; James K. Snowmobile steering ski
US20030151216A1 (en) * 2002-02-13 2003-08-14 Kubota Takahiko Steering ski for snow vehicle
US6626444B2 (en) 1993-08-12 2003-09-30 Polaris Industries Inc. Snowmobile steering ski
US20040160026A1 (en) * 2003-02-18 2004-08-19 Lund Jerome Edward Dual ski skag
US20050077693A1 (en) * 2003-10-08 2005-04-14 Simmons Verlin M. Wear bar for snow machine ski
WO2005118369A2 (en) * 2004-06-01 2005-12-15 International Engineering And Manufacturing, Inc. Thin, quick-mount runner for a snowmobile ski and method
USRE39012E1 (en) 1993-08-12 2006-03-14 Polaris Industries Inc. Snowmobile steering ski
US20060076742A1 (en) * 2004-10-12 2006-04-13 Northwoods Power Sports Distributors, Inc. Modular snowmobile ski
US20070001426A1 (en) * 2004-10-08 2007-01-04 Wade James T Board for supporting front of snow vehicle
US7287763B1 (en) * 2006-09-29 2007-10-30 9158-7782 Quebec Inc. Method of attachment of a ski on a snowmobile, and resulting snowmobile
US20130228988A1 (en) * 2012-03-02 2013-09-05 Kimpex Inc. Snowmobile Steering Ski
US20150314799A1 (en) * 2014-04-30 2015-11-05 Bombardier Recreational Products Inc. Snowmobile ski assembly
US9956982B1 (en) 2013-11-14 2018-05-01 Bombardier Recreational Products Inc. Adjustable ski for a snowmobile

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1464204A (en) * 1922-10-14 1923-08-07 Abram A Knowles Sleigh runner
US2741487A (en) * 1952-06-20 1956-04-10 Carefoot George Foster Adjustable keel for skis

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1464204A (en) * 1922-10-14 1923-08-07 Abram A Knowles Sleigh runner
US2741487A (en) * 1952-06-20 1956-04-10 Carefoot George Foster Adjustable keel for skis

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718341A (en) * 1971-09-17 1973-02-27 R Westberg Snowmobile anti-skid device
US3785448A (en) * 1972-01-26 1974-01-15 Valmet Oy Device in connection with the steering ski of a vehicle for improving its control
US3778074A (en) * 1972-05-16 1973-12-11 W Kozlow Snowmobile ski
US3877713A (en) * 1973-09-04 1975-04-15 Norman H Mabie Keel for snowmobile front skis
US3870331A (en) * 1973-09-12 1975-03-11 Gordon R Cryderman Snowmobile ski anti-skid assembly
US3857578A (en) * 1974-03-04 1974-12-31 Alton J Equipment Co Ltd Wear bar for a snowmobile ski
US4161323A (en) * 1977-10-03 1979-07-17 Wetteland Maxwell T Snow ski board apparatus
US4869336A (en) * 1987-11-25 1989-09-26 Sumitomo Rubber Industries, Ltd. Snowmobile
US5165709A (en) * 1990-07-03 1992-11-24 Bombardier Inc. Snowmobile ski including runner, sole and stiffener
US5344168A (en) * 1991-11-08 1994-09-06 Polaris Industries, L.P. Snowmobile ski
US5700020A (en) * 1993-08-12 1997-12-23 Noble; James K. Snowmobile steering ski
US6626444B2 (en) 1993-08-12 2003-09-30 Polaris Industries Inc. Snowmobile steering ski
USRE39012E1 (en) 1993-08-12 2006-03-14 Polaris Industries Inc. Snowmobile steering ski
US20030151216A1 (en) * 2002-02-13 2003-08-14 Kubota Takahiko Steering ski for snow vehicle
US6971653B2 (en) * 2002-02-13 2005-12-06 Yamaha Hatsudoki Kabushiki Kaisha Steering ski for snow vehicle
EP1336557A3 (en) * 2002-02-13 2005-12-28 Yamaha Hatsudoki Kabushiki Kaisha Snowmobile
US20040160026A1 (en) * 2003-02-18 2004-08-19 Lund Jerome Edward Dual ski skag
US6974139B2 (en) 2003-02-18 2005-12-13 Arctic Cat Inc. Dual ski skag
US20050077693A1 (en) * 2003-10-08 2005-04-14 Simmons Verlin M. Wear bar for snow machine ski
US7275751B2 (en) * 2003-10-08 2007-10-02 Simmons Verlin M Wear bar for snow machine ski
US7497447B2 (en) * 2004-06-01 2009-03-03 International Engineering & Manufacturing, Inc. Snowmobile ski and method
US20070029744A1 (en) * 2004-06-01 2007-02-08 International Engineering & Manufacturing, Inc. Snowmobile ski and method
US20070029743A1 (en) * 2004-06-01 2007-02-08 Robert Musselman Thin, quick-mount runner for a snowmobile ski and method
US7185897B2 (en) * 2004-06-01 2007-03-06 Robert Musselman Thin, quick-mount runner for a snowmobile ski and method
WO2005118369A3 (en) * 2004-06-01 2007-05-31 Internat Engineering And Mfg I Thin, quick-mount runner for a snowmobile ski and method
WO2005118369A2 (en) * 2004-06-01 2005-12-15 International Engineering And Manufacturing, Inc. Thin, quick-mount runner for a snowmobile ski and method
US20070001426A1 (en) * 2004-10-08 2007-01-04 Wade James T Board for supporting front of snow vehicle
US7500679B2 (en) * 2004-10-08 2009-03-10 Wade James T Board for supporting front of snow vehicle
US20060076742A1 (en) * 2004-10-12 2006-04-13 Northwoods Power Sports Distributors, Inc. Modular snowmobile ski
US7287763B1 (en) * 2006-09-29 2007-10-30 9158-7782 Quebec Inc. Method of attachment of a ski on a snowmobile, and resulting snowmobile
US20130228988A1 (en) * 2012-03-02 2013-09-05 Kimpex Inc. Snowmobile Steering Ski
US9022394B2 (en) * 2012-03-02 2015-05-05 Kimpex Inc. Snowmobile steering ski
US9956982B1 (en) 2013-11-14 2018-05-01 Bombardier Recreational Products Inc. Adjustable ski for a snowmobile
US20150314799A1 (en) * 2014-04-30 2015-11-05 Bombardier Recreational Products Inc. Snowmobile ski assembly
US20150314800A1 (en) * 2014-04-30 2015-11-05 Bombardier Recreational Products Inc. Snowmobile ski runner
US9499189B2 (en) * 2014-04-30 2016-11-22 Bombardier Recreational Products Inc. Snowmobile ski assembly
US9944306B2 (en) * 2014-04-30 2018-04-17 Bombardier Recreational Products Inc. Snowmobile ski runner

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