Coil Spring Patents (Class 152/87)
  • Patent number: 8863794
    Abstract: An internal wheel suspension and shock absorbing system includes a hub with radially extending spokes, cooperating with springs axially mounted thereon, abutting a hub and entering the rim of a wheel. The spokes secure onto a hub that mounts onto the vehicle axle, for rotation. When a force is encountered, the forces are absorbed by the spokes, the springs, and the slots as the hub has limited translation within the rim. The springs are adjustable and bias against the head of the spokes and the hub, and absorb the impact of vector forces generated from any impact.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: October 21, 2014
    Inventor: David L. Wichern
  • Patent number: 8127810
    Abstract: An internal wheel suspension and shock absorbing system, including a hub with radially extending rods or blades, cooperating with sector braces, fixedly mounted by hubs to the interior of the rim for a wheel. The rods and blades secure onto a hub, that mounts onto the vehicle axle, for rotation. When a force is encountered, the forces are absorbed by the blades that extend either through or cooperate with the braces and biasing springs, which are adjustable, that bias against the outer radial edges of the blades or telescoping rods, and absorb the vector forces generated from any impact.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: March 6, 2012
    Inventor: David L. Wichern
  • Patent number: 7810533
    Abstract: An internal wheel suspension and shock absorbing system, including a hub with radially extending rods or blades, cooperating with sector braces, fixedly mounted by hubs to the interior of the rim for a wheel. The rods and blades secure onto a hub, that mounts onto the vehicle axle, for rotation. When a force is encountered, the forces are absorbed by the blades that extend either through or cooperate with the braces and biasing springs, which are adjustable, that bias against the outer radial edges of the blades or telescoping rods, and absorb the vector forces generated from any impact.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: October 12, 2010
    Inventor: David L. Wichern
  • Patent number: 7516766
    Abstract: Disclosed is an intra-wheel rear suspension system moveably supporting a rotating wheel relative to a frame via a concentric hub structure, the system exhibiting minimal side play or torsional play due to its unique bearing structure. The system includes an inner carrier assembly having an inner slide block with front curved bearing surface and a rear curved bearing surface. A non-rotating axle extends to either side of the inner slide block and is secured to the frame. An outer track frame that is adapted for rotatably supporting the wheel via any suitable concentric hub structure, has a curved aperture with front and rear curved bearing surfaces that engage the front and rear curved bearing surfaces of the inner slide block. The outer track frame moves arcuately up and down relative to the inner slide block in response to a shock absorbing displacement.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: April 14, 2009
    Assignee: Dew Mfg., Inc.
    Inventor: Werner G. Hopf
  • Patent number: 7108331
    Abstract: The invention discloses a technology to safely control speed and brake on in-line skates using a ski-like technique, wherein in-line skate wheels can rotate both vertically and at an angle. When angled (or “canted”) the wheels contact a friction strip within the wheel frame or a friction disk on the axle. The friction caused by the angled wheels contacting friction strips or friction disks is comparable to the canted “edging friction control” action of skis. The novel means that allows both vertical and angular rotation is a cohesive 2-element plastic hub shown in FIG's 1–C & D. The inner element 2a has a convex perimeter and fits inside outer element 2's convex bore, allowing 2a to rotate freely within outer element 2. Within inner element 2a are axle bearings 5 or 9 and axle 8. External elastomer springs 7a or internal elastomer spring 7b keep each wheel in a vertical coasting position.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: September 19, 2006
    Inventor: Myron Stuart Hurwitz
  • Patent number: 6848750
    Abstract: The frame of an in-line skate (FIG. 8B) supports a wheel (10), allowing a skater to effectively slow down and stop, using an athletic stance that skiers on snow and ice skaters on ice use. The wheel (10) has a hub (20A), allowing a wheel to rotate around the axle (13A) vertically and at an inclination. The hub has axle roller bearings (23B). The wheel (10) includes friction band surfaces (11A) on the sides of the wheel. When rotating at an inclination the wheel's friction surface contacts a friction surface (11B), inside the wheel-well or an axle friction surface or a combination thereof to slow or brake the wheel. The wheel (10) assembly includes self-aligning springs (14A/B). Individual parts can be technically designed to allow various model solutions that will satisfy the abilities of a beginner to an expert. The wheel assembly frame can be attached to an in-line skate, an in-line skateboard, a downhill in-line ski and a downhill in-line skateboard.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: February 1, 2005
    Inventor: Myron Stuart Hurwitz
  • Publication number: 20030196737
    Abstract: A wheel with a spring unit includes a rim, a disc and a plurality of spring units. Each spring unit is directed circumferentially and arranged in an annular space between the rim and the disc. Each spring unit includes at least one metal spring. The metal spring may be a coil spring or a leaf spring, and may be prestressed in compression or tension. To restrict the lateral relative movement between the rim and the disc, a pair of stopper ribs are disposed on opposite sides of the spring unit, or an axial movement stopper is disposed at axially outboard end of the wheel.
    Type: Application
    Filed: December 27, 2002
    Publication date: October 23, 2003
    Applicant: TOPY KOGYO KABUSHIKI KAISHA
    Inventor: Yoshiaki Kimura