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Publication numberUS3693988 A
Publication typeGrant
Publication dateSep 26, 1972
Filing dateFeb 10, 1970
Priority dateFeb 10, 1970
Also published asCA933967A1
Publication numberUS 3693988 A, US 3693988A, US-A-3693988, US3693988 A, US3693988A
InventorsSteinhiser Paul F
Original AssigneeSteinhiser Paul F
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Two wheel roller skate
US 3693988 A
Abstract
A roller skate supporting the load of a person on two wheels centrally aligned with the longitudinal axis of the skate body. The wheels are rotatably mounted on axles carried by brackets pivoted to the body in longitudinally spaced relation for tracking a curved path in response to lateral pressure exerted on the wheels by the person attempting to make a turn. The skate is fastened to the toe portion of the shoe by a strap extending from clips on laterally adjustable rack bars.
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Description  (OCR text may contain errors)

United States Patent Steinhiser 1 1 Sept. 26, 1972 [5 TWO WHEEL ROLLER SKATE FOREIGN PATENTS OR APPLICATIONS Inventor: Paul t e 321 Beverly 211,859 1/1941 Switzerland ..280/11.25 q r M g y. 46360 741,159 11/1955 Great Britain ..280/1 1.23 22 Filed: 10 1970 849 1875 Great Britain ..280/11.23

1 1 Applo.2 9,472 Primary Examiner-Benjamin Hersh Assistant ExaminerMilton L. Smith 52 us. (:1. ..280/1.1.23, 280/1126, 280/1131 Attorney-Clarence A. oBrien and Harvey Jacob- [51] Int. Cl ..A63c 17/06 [58] Field of Search..200/l 1.26, 11.25, 11.19-14.28,

200/l1.31,'1l.31-11.34,l1.l,l1.11,ll.23 ABSTRACT A roller skate supporting the load of a person on two [56] References C'ted wheels centrally aligned with the longitudinal axis of UNITED STATES PATENTS the skate hody. The wheels are rotatably mounted on axles earned by brackets p1voted to the body in 1on- OSbOrn X paced relation for tracking a curved 235,887 12/1880 Mackay 280/1128 in response to lateral pressure exerted on the wheels 2,048,916 7/1936 Bentzlm ..280/11.22 by the person attempting to make a tum The skate is 2,067,712 1/1937 Knapp ..280/11.26 fastened to the toe portion f the Shoe by a Strap 2,100,584 11/1937 Wylie ..280/11.31 tending from clips on laterally adjustable rack bars 255,460 3/1882 Ross ..280/11.28 2,633,364 Wiseley ..280/1 1.28 15 Claims, 7 Drawing Figures PATENTED SEP 2 6 I972 3,693,988 sum 10F Paul F. Ste/Miser INVENTOR,

WW 29m PATENTED I973 3,693,988

SHEET 2 or 3 /a 74 Paul F. Stem/user 72 76 v 'INVENTOR.

and useful in providing a form or recreation and exer-' cise for the user. The two-wheeled type of roller skate provided by the present invention features, however, certain improvements which enhance the ability of the user to maneuver. Fastening of the skate to the shoes is also facilitated as well as adjustment to different shoe sizes.

In accordance with the present invention, the skate body is provided with a pair of brackets pivoted thereto in longitudinally spaced relation to the axles carried by the brackets on which the wheels are rotatable. Centering springs mounted on steering shafts fixed to the skate body and extending through longitudinal slots in the brackets, yieldably hold the brackets and the wheels carried thereby in a centrally aligned position for movement along a straight path. Lateral pressure exerted on the wheels cause pivotal displacement of the brackets in opposite directions thereby angularly displacing the wheel axles causing the wheels to track about a curved path inorder to accommodate turning of the skate from the straight path along which it is normally guided by the wheels.

The skate body is fastened to the shoe of the wearer by means of a strap threaded through clips pivotally connected to the lateral ends of a pair of rack bars positioned forwardly of the front wheel bracket. The rack bars are held in mesh with a pinion gear formation by means of a guide member which is held assembled by means of an actuating knob connected to the pinion gear formation.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIG. 1 is a side elevational view illustrating a roller skate constructed in accordance with the present invention.

FIG. 2 is a bottom plan view of the roller skate shown in FIG. 1.

FIG. 3 is a front elevational view of the roller skate shown in FIGS. 1 and 2.

FIG. 4 is a partial side sectional view taken substantially through a plane indicated by section line 4-4 in FIG. 2.

FIG. 5 is a transverse sectional view taken substantially through a plane indicated by section line 5-5 in FIG. 1.

FIG. 6 is a transverse sectional view taken substantially through a plane indicated by section line 66 in FIG. 1.

FIG. 7 is a perspective view showing the disassembled parts of the roller skate.

Referring now to the drawings in detail, and initially to FIGS. 1, 2 and 3, the roller skate generally referred to by reference numeral 10 includes an elongated body generally referred to by reference numeral 12 which is supported by a front wheel 14 and a real wheel 16. The wheels are similar in construction and are rotatably mounted by similar brackets 18 and 20 respectively carried by a front body section 22 and a rear body section24 which are interconnected with each other. The skate body is adapted to be fastened to the shoe of the user at the toe portion by a fastening assembly 26 mounted by the front section 22 forwardly of the front bracket 18.

As shown in FIGS. 1, 2 and 7, the front body section 22 includes a sole supporting surface 28 having a longitudinal recess 30 slidably receiving the elongated slide portion 32 of the rear body section 24 which extends from the heel supporting surface 34 from which the arcuate heel rest 36 projects upwardly. The slide portion 32 of the rear body section includes a plurality of apertures 38 one of which is adapted to be aligned with the aperture 40 in the recess 30 of the front body section 22 so that the body sections may be interconnected by means of the screw fastener 42 and the wing nut 44. It will be apparent, that the length of the skate body may be adjusted to suit the dimensions of the shoe of the user.

The front body section 22 is also provided with an aperture 46 as more clearly seen in FIG. 7 through which a pivotal axis extends about which the bracket 18 is pivotally displaceable forwardly thereof. An aperture 48, on the other hand, is formed in the rear body section 24 for establishing a second parallel pivotal axis for the rear bracket 20 which extends rearwardly therefrom. Thus, the brackets 18 and 20 are adapted to be pivotally displaced in opposite directions for tracking purposes as will be hereafter explained. The brackets are otherwise the same in construction and as more clearly seen in FIG. 7 include a top surface portion 50 on which ribs 52 are formed to reduce the frictional contact area between the bracket and the undersurface of the skate body section on which it is pivoted. The apertures 46 and 48 in the body sections are accordingly provided with weld nuts 54 adapted to threadedly receive the threaded portions 56 of pivot members 58 having pivotal bearing portions 60. Each pivot member 58 extends through an aperture 62 formed in the top surface 50 of the pivot bracket. Each pivot bracket furthermore includes a pair of parallel side portions 64 which extend downwardly from the top portion 50 and are provided adjacent the top portion with a pair of aligned longitudinal slots 66. Centrally spaced below the slots 66, are aligned apertures 68 adapted to receive the axle portion 70 of a bolt having a head portion 72 and a threaded end portion 74. A nut 76 is threadedly received on the threaded portion 74 of the axle bolt in order to hold it assembled between the side portions 64 of the bracket as more clearly seen in FIG. 6.

FIGS. 4 and 6 illustrate the bracket pivotally mounted on the skate body by means of the pivot member 58 thereby mounting the wheels on the axle portions 70 between the side portions 64 of the bracket in spaced relation below the undersurface of the skate body. A pair of inwardly tapered roller bearing assemblies 78 provide an anti-friction support for the hub 80 of the wheel which is made of a resilient material such as rubber. Further, the peripheral surface of the wheel includes ribbed beveled portions 82 which have been found to enhance the ability of the user of the skate to execute a turn in cooperation with the steering means to be hereafter described.

As shown in FIGS. 1 and 7, the front and rear sections of the skate body are provided with side skirts 84 and 86 having aligned apertures 88 and 90 through which pivot members 92 extend. The pivot members 92 are similar to the pivot member 58 previously described in connection with the pivotal mounting of the wheel brackets 18 and 20 and accordingly each is provided with a threaded portion and a pivot bearing portion received in the aligned apertures 88 and 90. Thethreaded portions of the pivot members 92 are threadedly received withinthe axial end portions of steering shafts 94 which are thereby secured to the body sections between the side skirts 84 and 86 as more clearly seen in FIG. 6. The axial end portions of the steering shafts are also externally threaded in order to mount in an axially adjusted position spring retainer 95 against which one axial end of centering spring elements 96 abut. Accordingly, a pair of such spring elements 96 are positioned on each of the steering shafts 94 and engage therebetween the wheel brackets 18 and 20 in order to yieldably hold the same in longitudinally aligned positions for enabling the wheels to guide movement of the skate body along a straight path. It will be apparent, that any unbalanced lateral pressure applied to a wheel will cause pivotal displacement of the bracket against the bias of the centering springs 96. This pivotal movement of the wheel bracket is accommodated because the steering shafts 94 extend through the longitudinal slots 66 in the side portions of the wheel brackets. As'a result of such pivotal movement of the wheel brackets, the wheel axles 70 on which the wheels are rotatably mounted, will be displaced from the nominal positions perpendicular to the longitudinal axis of the skate body. Inasmuch as the wheel brackets extend from their pivotal axes in opposite directions along the longitudinal axis of the skate body, the brackets will pivot in opposite directions so that the rotational axes of the wheels through the axles 70 may intersect at some distant center of curvature establishing thereby a curved path along which the skate body is guided by the wheels in response to the unbalanced lateral pressure applied to the wheels by the skater when attempting to make a turn.

As shown in FIGS. 1 and 7, the side skirts of the front body section 22 are provided with slots 98 through which front and rear rack bars 100 and 102 laterally extend forming part of the fastening assembly 26. The laterally outer ends of the rack bars are provided with sleeve formations 104 pivotally mounting pivot bars 106 associated with buckle clips 108. The pivot bar 106 of each buckle clip interconnects with angularly related leg portions 110 to which guide bars 112 are connected. Thus, a strap 1 14 may be threaded between the guide bars 112 in engagement with the sleeve formations 104 for securing the skate body to the top forward portion of the shoe. Different size shoes are accommodated by adjusting the lateral spacing of the sleeve formations 104 at the ends of the rack bars 100 and 102.

Lateral adjustment of the rack bars is effected by means of an actuating knob 116 located below the underside of the front body section 22. The actuating knob 116 is connected by means of a pin 118 to the lower end portion 120 of a pivot member 122 having a slotted head portion 124 and an intermediate pinion gear formation 126. Thus, as more clearly seen in FIG.

5, the actuating knob 116 when secured by the pin 1 18 to the pivot member 124, holds a guide member 128 assembled in abutment with the underside of the front body section 22. The guide member includes flanges 130 as more clearly seen in FIG. 7 which abut the underside of the front body section between which the rack bars and 102 are slidably held in meshing engagement with the pinion gear formation 126. An aperture 132 is formed in the guide member dimensioned to receive the end portion which is of smaller diameter than the pinion gear formation 126. A diametrically larger bearing portion 134 is formed on the pivot member 122 below the head portion 124 so, as to rotatably mount the pivot member in the aperture 136 formed in the front body section as shown in FIGS. 5 and 7. Thus, the actuating knob 116 will not only hold the fastening assembly 26 assembled on the front skate body section, but will also enable the fastening assembly to be laterally adjusted by rotation of the pinion gear formation.

The foregoing is considered as illustrative only of the principles of. the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. In a roller skate having an elongated body and a pair of wheels nominally aligned with a plane containing a central longitudinal axis of the body, a pair of brackets having axles rotatably mounting said wheels, each of said brackets being pivotally mounted on the body about a pivotal axis intersecting the longitudinal axis in said plane and spaced from the axle, and steering means mounted by said body and engageable with the bracket for yieldably resisting pivotal displacement thereof by unbalanced lateral pressure on the wheels, said steering means including a shaft fixed to said body in perpendicular relation to the longitudinal axis, said bracket having longitudinal slots through which said shaft extends in longitudinal spaced relation to the pivotal axis, and centering spring means mounted on the shaft for holding the bracket in a position with said wheel aligned with said plane.

2. The combination of claim 1 wherein the pivotal axes are longitudinally spaced from the axles of the associated brackets in opposite directions respectively.

3. The combination of claim 2 wherein each of said wheels is made of a resilient material having a peripheral surface which includes laterally beveled portions with rib formations thereon.

4. The combination of claim 3 wherein said body includes front and rear sections respectively mounting the brackets, and fastening means extending laterally from the front section of the body on the same side of the pivotal axis as the axle associated with the bracket mounted by the front section.

5. The combination of claim 4 wherein said fastening means includes a pair of rack bars, an assembly pin rotatably mounted by the front section of the body having a pinion gear formation thereon in mesh with said rack bars, guide means through which the rack bars slidably extend for holding the same in mesh with the a pinion gear formation, and actuating means connected to the assembly pin for holding the guide means in abutment with the body and laterally adjusting the rack bars.

6. The combination of claim 5 wherein said fastening means further includes a pair of buckle clips, each having angularly related leg portions extending from a pivot bar and guide bars connected to the leg portions in spaced relation to the pivot bar, sleeve formations mounted on the rack bars through which the pivot bars extend, and a strap entrained about the guide bars against the sleeve formations.

7. In a roller skate having an elongated body and a pair of front and rear wheels, said wheels nominally aligned with a plane containing a central longitudinal axis of said body, a pair of brackets having axles rotatably mounting said wheels, each of said brackets being pivotally mounted intermediate of said wheels in contact with said body about a pivotal axis intersecting the longitudinal axis in said plane and spaced from the axle, front and rear side skirts depending from said body, said brackets disposed laterally inwardly of said depending side skirt portions, and steering means mounted between said side skirts and substantially perpendicular thereto, said steering means including resilient spring means seated on said brackets for yieldably resisting pivotal displacement thereof by unbalanced lateral pressure on said wheels.

8. The combination of claim 7 wherein the pivotal axes are longitudinally spaced from the axles of the associated brackets in opposite directions respectively.

9. The combination of claim 8 wherein said body includes front and rear sections respectively mounting the brackets, and fastening means extending laterally from the front section of the body on the same side of the pivotal axis as the axle associated with the bracket mounted by the front section. I

10. The combination of claim 7 wherein said body includes front and rear sections respectively mounting the brackets, and fastening means extending laterally from the front section of the body on the same side of the pivotal axis as the axle associated with the bracket mounted by the front section.

11. In a roller skate having an elongated body and a pair of front and rear wheels nominally aligned with a plane containing a central longitudinal axis of the body, a pair of brackets having axles rotatably mounting said wheels, each of said brackets being pivotally mounted intermediate of said wheels about a pivotal axis intersecting the longitudinal axis in said plane and spaced from the axle, front and rear skirt portions depending from said body, steering means mounted on'said front and rear skirt portions and engageable with said brackets for yieldably resisting pivotal displacement thereof by unbalanced lateral pressure on said wheels, said body including front and rear sections respectively mounting the brackets, and fastening means extending laterally from the front section of the body on the same side of the pivotal axis as the axle associated with the bracket mounted by the front section, said fastening means including a pair of rack bars, an assembly pin rotatably mounted by the front section of the body having a pinion gear formation thereon in mesh with said rack bars, guide means through which the rack bars slidably extend for holding the same in mesh with the pinion gear formation, and actuating means connected to the assembly pin for holding the guide means in abutment with the body and laterally adjusting the rack bars.

12. In a roller skate having an elongated body and a pair of wheels nominally aligned with a plane containing a central longitudinal axis of the body, a pair of brackets having axles rotatably mounting said wheels, each of said brackets being pivotally mounted on the body about a pivotal axis intersecting the longitudinal axis in said plane and spaced from the axle, and steering means mounted by the body and engageable with the bracket for yieldably resisting pivotal displacement thereof by unbalanced lateral pressure on the wheels, said body including front and rear sections respectively mounting the brackets, and fastening means extending laterally from the front section of the body on the same side of the pivotal axis as the axle associated with the bracket mounted by the front section, said fastening means including a pair of rack bars, an assembly pin rotatably mounted by the front section of the body having a pinion gear formation thereon in mesh with said rack bars, guide means through which the rack bars slidably extend for holding the same in mesh with the pinion gear formation, and actuatingmeans connected to the assembly pin for holding the guide means in abutment with the body and laterally adjusting the rack bars, said fastening means further including a pair of buckle clips, each having angularly related leg portions extending from a pivot bar and guide bars connected to the leg portions in spaced relation to the pivot bar, sleeve formations mounted on the rack bars through which the pivot bars extend, and a strap entrained about the guide bars against the sleeve formations.

13. In a roller skate having an elongated body and a pair of wheels nominally aligned with a plane containing a central longitudinal axis of the body, at least one bracket having an axle rotatably mounting one of the wheels, means pivotally mounting the bracket on the body about a pivotal axis intersecting the longitudinal axis in said plane and spaced from the axle, and steering means mounted by the body and engageable with the bracket for yieldably resisting pivotal displacement thereof by unbalanced lateral pressure on the wheel, said steering means including a shaft fixed to the body in perpendicular relation to the longitudinal axis, said bracket having longitudinal slots through which the shaft extends in longitudinal spaced relation to the pivotal axis, and centering spring means mounted on the shaft for holding the bracket in a position with said wheel aligned with said plane.

14. In a roller skate having an elongated body, fastening means extending laterally from the body including a pair of rack bars, an assembly pin rotatably mounted by the front section of the body having a pinion gear formation thereon in mesh with said rack bars, guide means through which the rack bars slidably extend for holding the same in mesh with the pinion gear formation, and actuating means connected to the assembly pin for holding the guide means in abutment with the body and laterally adjusting the rack bars.

15. The combination of claim 14 wherein said fastening means further includes a pair of buckle clips, each having angularly related leg portions extending from a pivot bar and guide bars connected to the leg portions in spaced relation to the pivot bar, sleeve formations mounted on the rack bars through which the pivot bars extend, and a strap entrained about the guide bars against the sleeve formations.

a: a a

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US235887 *Jun 14, 1879Dec 28, 1880 mackay
US255460 *Mar 28, 1882 Roller-skate
US327819 *May 1, 1885Oct 6, 1885 Roller-skate
US2048916 *May 25, 1935Jul 28, 1936Frank A BentzlinRoller skate
US2067712 *Oct 11, 1935Jan 12, 1937Montgomery Ward & Co IncRoller skate
US2100584 *Jun 9, 1936Nov 30, 1937Wylie RobertRoller skate
US2633364 *Feb 21, 1949Mar 31, 1953Francis M WiseleyRoller skate
CH211859A * Title not available
GB741159A * Title not available
GB187500849A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3953041 *Feb 6, 1975Apr 27, 1976Lawrence Peska Associates, Inc.Large wheel roller skate
US4034995 *Nov 12, 1975Jul 12, 1977Daniel ForwardTandem wheeled roller skate having spheroidal rollers
US4278264 *Jul 6, 1979Jul 14, 1981Lenz Brent LSkate
US4767127 *Jul 2, 1986Aug 30, 1988Icaro Olivier & C. S.P.A.Roller skate with a binding strap fitting from the rear
US5590890 *May 12, 1993Jan 7, 1997Jack L. ForcelledoRoller skate
US5718438 *Sep 7, 1995Feb 17, 1998Cho; Sung HoBouncing roller skates
US5893569 *Nov 8, 1996Apr 13, 1999Jas. D. Easton, Inc.Inline hockey skate
US6290242 *Sep 26, 2000Sep 18, 2001Edward Eugene LudwigDouble-action inline skate with wheel surface shaped for maneuverability
US6547261 *Dec 18, 2000Apr 15, 2003Benetton Group S.P.A.Adjustment device, particularly for adjusting the size of an in-line roller skate
US6959933 *May 6, 2003Nov 1, 2005Roth Edmund HTwin line skates
US8256776 *Jul 16, 2010Sep 4, 2012John James PetellPerformance pick
US8684369 *Sep 24, 2012Apr 1, 2014Harmony Sports Inc.Ball pick
CN102139152A *May 9, 2011Aug 3, 2011太仓市车中宝休闲用品有限公司Feet-swinging type propulsion skateboard with two wheels
EP0349943A2 *Jul 1, 1989Jan 10, 1990Giuseppe RossoRoller-skating device
Classifications
U.S. Classification280/11.223, 280/11.233, 280/11.26, 280/11.31
International ClassificationA63C17/22, A63C17/00
Cooperative ClassificationA63C17/22
European ClassificationA63C17/22