Stephen J. Davis — Sporting Goods Patents & Inventions
Stephen J. Davis is an inventor on more than 60 U.S. patents spanning sporting goods product design, composite materials, structural engineering, and performance technologies. His inventions include technologies developed across multiple sporting goods categories during a career in research, engineering, and product development.
The patents below provide a record of inventions and the engineering work behind them.
Racquet Sports
4,828,259 — Tennis Racquet with Double Throat Bridge
5,029,859 — Holey Bumper for Wide Body Tennis Racquets
5,037,098 — Racquet with Constant Taper System
5,071,124 — Y Joint Badminton Racquet
5,176,868 — Long Fiber Reinforced Thermoplastic Frame: Vortex
5,211,397 — String Vibration Dampener for a Tennis Racquet
5,238,247 — Mono-Shaft Sports Racquet
5,322,279 — Double Strung Tennis Racquet
5,464,210 — LongBody Tennis Racquet
5,562,283 — Sports Racquet Having Power Ring
5,599,019 — Handle Pallet for Implements Such as Sports Racquets
5,649,702 — Sports Racquet with Spin-Enhancing Cross-Section
5,711,720 — Vision Grip Handle for Sports Racquets
5,797,814 — Elastic Lanyard for Racquetball Racquets
5,810,683 — Morph Frame for Sports Racquet
5,833,560 — Oversize Racquetball Racquet
5,944,624 — Sweet Spot Suspension System for Sports Racquet
5,993,337 — Multi-Hole Grommet for Sports Racquets
6,071,203 — Two Piece Sports Racquet: More Technology
6,234,921 B1 — Sports Racquets with Tripod Weighting: Triple Threat
6,358,165 B1 — Throatless Squash Racquet: Extender
6,406,388 B1 — Game Racquet with Slide On, Cushioned Handle
6,800,239 — Two Piece Sport Racquet: O3 Technology
US D314,028 — Bumper Strip for Tennis Racquets
US D326,698 — Badminton Racquet
US D394,094 — Tennis Racquet
US D401,635 — Face of a Tennis Racquet
US D474,820 S — Squash Racquet
Archery
8,079,353 B2 — Archery Bow Having O Tech Multiple-Tube Structure
Golf Clubs
5,318,297 — Aerodynamic Golf Club
6,048,278 — Metal Wood Golf Clubhead
7,811,178 B2 — Golf Head Having a Ported Construction: O Tech
Golf Grips
9,676,094 B1 — Flexible Implement Golf Putter Grip: SNSR Putter
9,844,711 B2 — Flexible Grip and Cap Therefor
9,999,815 B2 — Lightweight Multicolor Compression Molded Grip
10,052,538 B2 — Golf Grip with Reminder Rib: Align Technology
10,293,230 B1 — Flexible Golf Grip with Full Thickness Rib Section: Align Technology
10,343,039 B2 — Lightweight Multicolor Compression Molded Grip
10,987,557 B2 — Flexible Golf Club Grip with Stable Cap
US D846,051 S1 — Golf Grip
US D800,856 S1 — Golf Putter Grip
US D794,147 S1 — Golf Putter Grip
Bats
7,575,527 B2 — Composite Bat Having a Single, Hollow Primary Tube Structure: O Tech
7,883,434 B2 — Composite Bat Having a Multiple Tube Structure: O Tech
9,427,640 B2 — Ball Bat Including a Stiffening Element in the Barrel
9,586,111 B2 — Sporting-Good Implement with Rotatable Handle: Torq Technology
9,895,588 B2 — Ball Bat Including a Stiffening Element in the Barrel
10,076,693 B2 — Sporting-Good Implement with Rotatable Handle: Torq Technology
Bicycles
7,651,110 B2 — Bicycle Having Multiple Tube Frame Structure: O Tech
Hockey
7,727,095 B2 — Hockey Stick Having a Single, Hollow Primary Tube: O Tech
7,727,096 B2 — Composite Hockey Stick System: O Tech
7,909,713 B2 — Shaft for a Sports Stick Such as a Hockey Stick: O Tech
9,744,417 B2 — Hockey-Stick Blade with Reinforcing Frame
9,925,440 B2 — Sporting Goods Including Microlattice Structures
9,993,707 B2 — Hockey-Stick Blade with Reinforcing Frame
Skates
8,567,794 B2 — Frame Structure for Skates: O Tech
10,195,514 B2 — Hockey Skate Including a One-Piece Frame with Integral Pedestals
Manufacturing
6,800,239 B2 — Method of Manufacturing a Two Piece Sports Racquet: More Technology
7,931,839 B2 — Method of Manufacturing Composite Single-Tubed Structures Having Ports: O3
Musical Instruments
6,683,236 B2 — One Piece Composite Guitar Body
7,531,729 B1 — Neck Assembly for a Musical Instrument
7,612,271 B1 — Tubular Bracing for a Musical Instrument