Thomas A. McMahon

home | fiction | stage plays | non-fiction | scientific publications | patents

Patent Number:5,599,290
Date of Patent: Feb.4,1997
Title: "Bone Fracture prevention Garment and Method"
Inventors: Wilson C. Hayes, Stephen N. Robinovitch and Thomas A. McMahon.
Assignees: Beth Israel Hospital, Boston;President and Fellows of Harvard
College, Cambridge, both of Mass.

Abstract:

A garment, in one embodment of the invention, reduces the risk of bone
fracture of a human or animal subject due to impact forces on a vulnerable
region having a bone part near the skin surface. The garment has an
arangement for shunting a substantial portion of the impact energy from the
vulnerable region to the soft tissue region, where such energy may be safely
absorbed and/or dissipated. In a further embodiment, there is utilized a
dilatent material that is relatively stiff near the time of impact and
relatively fluid at other times. Related methods are also provided.

Licensee: Sahvatex A/S (now Tytex), Feb. 1, 1999
Product: Safehip; www.tytex.com

Patent Number: 5,545,128
Date of Patent: Aug.13, 1996
Title: "Bone Fracture Prevention Method"
Inventors: Wilson C. Hayes, Stephen N. Robinovitch, Thomas A. McMahon.
Assignees: Beth Israel Hospital,Boston; President and Fellows of Harvard
College, Cambridge, both of Mass.

Abstract:

A garment, in one embodiment of the invention, reduces the risk of bone
fracture of a human or animal subject due to impact forces on a vulnerable
region having a bone part near the skin surface when the vulnerable region
is proximate to a soft tissue region lacking a bone part near the skin
surface.The garment has an arrangement for shunting a substantialportion of
the impact energy from the vulnerable region to the soft tissue region,
where such energy may be safely absorbed and/or dissipated. In a further
embodiment, there is utilized a dilatent material that is relatively stiff
near the time of impact and relatively fluid at other times. Related methods
are also provided.

Licensee: Sahvatex A/S (now Tytex), Feb. 1, 1999

Patent Number: 5,313,718
Date of Patent: May 24, 1994
Title: "Athletic Shoe With Bendable Traction Projections"
Inventors: Thomas A McMahon, Wellesley, Mass.; Gordon A. Valiant, Lake
Oswego, Oreg.
Assignee: Nike, Inc., Beaverton, Oreg.

Abstract:

There is disclosed an athletic shoehaving grooves in a ground engaging
surface of a sole formed concentrically about a pivot point in the ball
portion and having traction projections in the form of bristles or columns
embedded in the bottom of the grooves. Free ends of the traction projections
protude from the ground engaging surfce whereby forces on the fre ends of
the traction projections perpendicular to the grooves, as when a player is
accelerating, causes the projections to bend against the side walls of the
grooves which thussupport the projections against further bending with the
free ends of the projections protruding from the outsole to provide
traction. Forces on the free ends of the projections tangentially to the
grooves, as when a player pivots, cause the projections to bend into or lay
down in the grooves and thus offer little or no traction. The ground
engaging surface of the sole is formed of a material having a low
coefficient of friction so that the sole can move or pivot relatively freely
once the projections have bent into the grooves.