Steven Joseph Lindquist

US Patent:

6974194, Dec 13, 2005

Filed:

Jun 5, 2003

Appl. No.:

10/455522

Inventors:

Philip Schreiber - Denver CO, US
Steven L. Lindquist - Westminster CO, US
Brandon McKee - Boulder CO, US
Allen B. Killebrew - Longmont CO, US

Assignee:

Sunrise Medical HHG Inc. - Longmont CO

International Classification:

B60B035/00

US Classification:

30111106, 30111107, 301121, 2802501, 2803041, 4033741

Abstract:

A wheel mount assembly adapted for use in securing a camber tube to a wheelchair frame comprises an axle plate, at least one axially displaceable member adapted to be fixed in relation to the axle plate, and at least one radially displaceable member adjacent the axially displaceable members. The axially displaceable member is adapted to be axially displaced to cause the radially displaceable member to be displaced to tighten against the camber tube to hold the camber tube in place.

US Patent:

7007965, Mar 7, 2006

Filed:

Mar 31, 2003

Appl. No.:

10/403998

Inventors:

Todd Bernatsky - Lafayette CO, US
Philip Schreiber - Denver CO, US
Tom Whelan - Longmont CO, US
Wayne Hanson - Bozeman MT, US
Steven L. Lindquist - Arvada CO, US
Jerry Houtart - Longmont CO, US
Richard Schneider - Loveland CO, US
Allen B. Killebrew - Longmont CO, US
Mike Nordquist - Longmont CO, US

Assignee:

Sunrise Medical HHG Inc. - Longmont CO

International Classification:

B62J 1/00

US Classification:

2803041, 2802501, 297317, 297318

Abstract:

A center-of-gravity tilt-in-space wheelchair includes a base, a seat for supporting an occupant, and tracks supporting the seat for selective seat movement relative to the base. Wheels are adapted to support the base relative to a supporting surface. The tracks serve as rolling or sliding surfaces that allow the seat to rotate with respect to the base. Each track has a constant-radius arc with a focal point that is adapted to be coincident with the center of gravity of the wheelchair occupant. A low-friction supports the base relative to the seat. The low-friction support may include low friction elements that mate with the tracks to support for the tracks. The support can be adjustable to permit the overall tilt angle range of the tracks to be adjusted. The wheelchair seat can be adjusted to maintain the focal point of the constant-radius arc of the tracks coincident with the center of gravity of the wheelchair occupant. The front and rear wheels can be adjusted fore and aft relative to the focal point.

US Patent:

7231689, Jun 19, 2007

Filed:

Sep 9, 2004

Appl. No.:

10/937168

Inventors:

Philip Scheiber - Denver CO, US
Steven L. Lindquist - Broomfield CO, US
Allen B. Killebrew - Erie CO, US

Assignee:

Sunrise Medical HHG Inc. - Longmont CO

International Classification:

B60B 33/04

US Classification:

16 19, 16 18 R, 16 22, 16 29, 2802501

Abstract:

An improved wheel assembly comprises a caster swivel post that is adapted to pivot about a pivot axis transverse to the caster swivel post. A caster fork is supported for rotation relative to the caster swivel post and rotatably supports a caster wheel. The caster swivel post is adapted selectively pivot about the pivot axis that is transverse to the caster swivel post or be held in a substantially fixed position. A setscrew can be threadable into an upper end of a pivot nut to hold the pivot nut and thus the caster swivel post in a fixed position within the housing.

US Patent:

7249773, Jul 31, 2007

Filed:

Sep 2, 2005

Appl. No.:

11/218451

Inventors:

Philip H. Schreiber - Denver CO, US
Steven L. Lindquist - Broomfield CO, US
Allen Killebrew - Erie CO, US

Assignee:

Sunrise Medical HHG Inc. - Longmont CO

International Classification:

B60G 7/02

US Classification:

280 86751

Abstract:

An angle adjustable camber assembly is adapted to support the wheel of a wheelchair having a seat, the rear of which is at a given rear seat height. The assembly comprises a movable member for supporting the wheel. The movable member is adapted to translate and rotate so as to be able to selectively position the wheel at any one of a variety of camber angles while substantially maintaining the rear seat height and a spacing between the top of the wheel and the seat frame.

US Patent:

7353566, Apr 8, 2008

Filed:

Jun 4, 2003

Appl. No.:

10/454756

Inventors:

Philip Scheiber - Denver CO, US
Steven L. Lindquist - Arvada CO, US
Brandon Mckee - Boulder CO, US
Allen B. Killebrew - Longmont CO, US
Rex W. Stevens - Longmont CO, US
Ralf Groene - Boulder CO, US
Michael Knopf - Dielheim, DE

Assignee:

Sunrise Medical HHG Inc. - Longmont CO

International Classification:

B60B 33/04

US Classification:

16 19, 16 18 R, 16 22, 16 29, 2802501

Abstract:

An improved wheel assembly comprises a caster fork, a caster wheel rotatably supported by the caster fork, and a caster swivel post defining an axis about which the caster fork rotates. The caster swivel post is being adapted to rotate about a pivot axis within a cylindrical housing. Alternatively, the wheel assembly has an adjustable axle for varying the camber angle of a wheel. The wheel assembly comprises a housing and an axle supported by the housing. The axle in turn rotatably supports a wheel. The axle is adapted to rotate about a pivot axis within a cylindrical housing.

US Patent:

8474848, Jul 2, 2013

Filed:

Aug 6, 2004

Appl. No.:

10/913005

Inventors:

Todd Bernatsky - Lafayette CO, US
Philip Schreiber - Denver CO, US
Thomas J. Whelan - Longmont CO, US
Wayne Hanson - Bozeman MT, US
Steven L. Lindquist - Broomfield CO, US
Jerry Houtart - Longmont CO, US
Richard Schneider - Loveland CO, US
Allen B. Killebrew - Erie CO, US
Mike Nordquist - Longmont CO, US

Assignee:

Sunrise Medical (US) LLC - Fresno CA

International Classification:

B62M 1/14

US Classification:

2802501, 2803041

Abstract:

The vehicle comprises a base and a seat moveable along a curve having a focal point. The vehicle is adjustable to position an occupant in the seat to achieve a desired position for the center of gravity of the occupant relative to the focal point of the curve. A method for minimizing effort required to tilt the seat of a personal mobility vehicle comprises the steps of providing a personal mobility vehicle having a seat that is adapted to move along an arc having a center of curvature, positioning the seat substantially horizontally, providing an occupant in the seat, and adjusting the position of the vehicle occupant's center of gravity so that the center of gravity is substantially equal to or below the center of curvature of the arc.

US Patent:

7360781, Apr 22, 2008

Filed:

Oct 7, 2005

Appl. No.:

11/246935

Inventors:

Philip H. Schreiber - Denver CO, US
Michael Knopf - Baden Wuerttemberg, DE
Errol Marklein - Tairnbach, DE
Steven L. Lindquist - Broomfield CO, US

Assignee:

Sunrise Medical HHG Inc. - Longmont CO

International Classification:

B62M 1/14

US Classification:

2802501, 2803041

Abstract:

A foldable wheelchair comprises a substantially horizontally extending upper side frame member. An upper end of an axle plate is secured to the upper side frame member. An axle housing is secured to the axle plate. A cross brace is pivotally secured directly to the axle plate at the lower end of the axle plate. A wheel mount assembly comprises an axle sleeve mount having an internal thread. An axle sleeve has an external thread that is in threaded engagement with the internal thread of the axle sleeve mount. The axle sleeve has an internal bore that accepts a wheel axle. The internal bore is angled with respect to the axis of the external threads to provide camber to a wheel. The axle sleeve is adapted to provide lateral adjustment to the wheel by rotating the axle sleeve within the axle sleeve mount any number of complete revolutions. Moreover, the axle sleeve is adapted to provide toe in and toe out adjustment to a cambered wheel by rotating the axle sleeve within the axle sleeve mount a fraction of a complete revolution.

US Patent:

20060055143, Mar 16, 2006

Filed:

Sep 9, 2005

Appl. No.:

11/223426

Inventors:

Philip Schreiber - Denver CO, US
Michael Knopf - Dielheim, DE
Errol Marklein - Tairnbach, DE
Steven Lindquist - Broomfield CO, US
Joshua Heit - Westminster CO, US
Allen Killebrew - Erie CO, US
Todd Bernatsky - Lafayette CO, US

International Classification:

B62M 1/14

US Classification:

280250100

Abstract:

A wheel mount may generally be comprised of an axle plate and a camber tube clamp that may be height adjustable with respect to the axle plate. The camber tube clamp can be selectively mountable upright or inverted so as to increase an overall range of height adjustability. The camber tube clamp can be mountable in front of or behind the axle plate so as to increase an overall range of center-of-gravity adjustability. The camber tube clamp and the axle plate may have an interlocking feature that may allow the camber tube clamp to slide vertically along the axle plate to facilitate height adjustment. A seat collar can be positioned at various locations along a wheelchair frame for center-of-gravity adjustment. The axle plate can be detached from and attached to the seat tube collar to allow the axle plate and camber tube clamp to be reverse mounted in order to increase the range of center of gravity adjustment. A wheelchair suspension system according to the invention may be comprised of a swing arm and at least one elastomer. The swing arm may be adapted to support a rear wheelchair wheel and pivot about an axis substantially fixed to a wheelchair frame. The swing arm can be suspended between two of the elastomers, or be operatively connected to one elastomer so that displacement of the swing arm in either direction about the pivot causes the elastomer to compress.