Cambered skateboard provided with longitudinally adjustable truck assemblies

• US 4,029,330 A
• Filed: 05/05/1976
• Issued: 06/14/1977
• Est. Priority Date: 05/05/1976
• Status: Expired due to Term

• Current Assignee: Paul S. Runyan Jr
• Original Assignee: Paul S. Runyan Jr
• Inventors: Runyan, Paul S. Jr.
• Primary Examiner(s): Song, Robert R.
• Assistant Examiner(s): Smith, Milton L.
• Application Number:
  US05/683,273
• Time in Patent Office: 405 Days
• Field of Search: 280/87.04 A, 280/11.28, 280/11.27, 280/11.26, 280/11.14, 280/11.1 BT, 280/11.1 R, 280/87.03
• US Class Current: 280/87.042
• CPC Class Codes: A63C 17/0086 Roller skates adjustable in length to fit the size of the foot
• CPC Class Codes: A63C 17/01 Skateboards A63C17/02 - A63C17/28 take precedence; rolling devices on skis A63C5/035
• CPC Class Codes: A63C 17/012 with a truck, i.e. with steering mechanism comprising an inclined geometrical axis to convert lateral tilting of the board in steering of the wheel axis
• CPC Class Codes: A63C 17/015 with wheels arranged in two pairs

Abstract

A cambered skateboard with a rigid track assembly comforming to curvature of the board at one or both ends. Provision is made for longitudinal adjustment of each truck mounted by the tracks.

Claims

1. In a skateboard having a longitudinally cambered board made from resilient material capable of limited flexing under the weight of a rider, the skateboard having substantially parallel deck and lower surfaces, and front and back longitudinally spaced trucks mounted to its lower surface for carrying a rider along a path selected by application of pressure to the deck surface;

the improvement comprising;

first mounting means for permitting longitudinal adjustment of one of the trucks with respect to the board, said first mounting means including;

a rigid track assembly having an upper longitudinal surface complementary to the unweighted configuration of a cambered portion of the lower surface of the board, said track assembly being fixed to said cambered portion in surface-to-surface engagement between the upper surface of the track and the lower surface of the board; and

releasable means operably engaged between said one truck and said track assembly for selectively fixing the longitudinal position of the truck relative to the track assembly.

2. A skateboard as set out in claim 1 wherein the cambered portion of the board immediately above said track is substantially more narrow in transverse width than the transverse width of the board along its length between the longitudinally spaced trucks.

3. A skateboard as set out in claim 2 wherein the remaining truck is mounted at a stationary position with respect to the board.

4. A skateboard as set out in claim 1 wherein said track assembly and said one truck are located adjacent the front or nose of the board and wherein the cambered portion of the board immediately above said track assembly is in the form of an elongated narrow tongue having a width substantially less than the transverse width of the board along its length between the longitudinally spaced trucks, there being an abrupt increase in the board width immediately rearward of said track assembly.

5. A skateboard as set out in claim 1 further comprising:

second mounting means spaced longitudinally from said first mounting means for permitting longitudinal adjustment of a second truck with respect to the board, said second mounting means including;

a rigid track assembly having an upper longitudinal surface complementary to the unweighted configuration of a cambered portion of the lower surface of the board, said track assembly being affixed to said cambered portion in surface-to-surface engagement between the upper surface of the track assembly and the lower surface of the board;

releasable means operably engaged between the second truck and said last-named track assembly for selectively fixing the longitudinal position of the second truck relative to said last-named track assembly.

6. A skateboard set out in claim 1 wherein the upper longitudinal surface of the track has a concave longitudinal curvature.

7. A skateboard as set out in claim 1 wherein the upper longitudinal surface of the track has a convex longitudinal curvature.

8. A skateboard as set out in claim 1 wherein the track comprises a pair of transversely spaced rails identical to one another and fixed to the board in a parallel side-by-side relationship to one another.

9. A skateboard as set out in claim 1 wherein the track comprises a pair of transversely spaced rails identical to one another and fixed to the board in a parallel side-by-side relationship to one another;

the lower surface of each rail being planar;

said truck having an upwardly facing flat mounting surface complementary to the planar lower surfaces of the rails for surface-to-surface engagement therewith;

said releasable means being connected between the truck and the respective rails to maintain the mounting surface of the truck in a fixed position engaged against the lower surface of each rail.