Patents by Inventor Nathaniel E. Grace

Nathaniel E. Grace has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12644683
    Abstract: An archery arrow is provided to include a shaft that is tubular and includes an exterior surface and an opposing interior surface, with an insert secured to the shaft. The insert can define a hole configured to join a component, for example, a broadhead with the arrow. The hole can be round and concentric with the exterior surface of the shaft, and in some cases non-concentric with the interior surface. The insert can be adhered to the shaft and later machined to define the hole to provide the concentricity of the hole and the shaft exterior or an associated outer diameter. When a component such as a broadhead is joined with the arrow via installation in the hole, the component can be centered relative to the shaft exterior. A related method of manufacturing an arrow is provided.
    Type: Grant
    Filed: March 5, 2024
    Date of Patent: June 2, 2026
    Assignee: Grace Engineering Corp.
    Inventor: Nathaniel E. Grace
  • Patent number: 12553695
    Abstract: An expandable broadhead is provided with a ferrule defining a slot within which one or more blades are moveably mounted to a pin. A retainer in the slot can secure the blades in a closed mode when an arrow associated with the broadhead is shot from an archery bow. The retainer can include a dimple and a blade can include a retainer hole within which the dimple nests to secure the blade. The retainer hole can be common with and/or extend from a mass reducing opening defined by the blade. The dimple can ride over contours of the blade on a path to enter the hole with significantly less force than that to release the dimple and retainer from, and deploy, the blade. The slot can increase in depth beyond the dimple to reduce frictional engagement of the blades with slot sidewalls during deployment. A related method is provided.
    Type: Grant
    Filed: January 8, 2024
    Date of Patent: February 17, 2026
    Assignee: Grace Engineering Corp.
    Inventor: Nathaniel E. Grace
  • Patent number: 12435944
    Abstract: An archery bow is provided including opposing limbs and a riser. The riser can include a riser handle and one or more primary riser elongated elements extending away from the handle to respective limbs. The primary riser elongated elements can be straight, elongated round or other shaped tubes, rods or bars constructed optionally from a composite or other material. Vents can be included in ports of the riser to facilitate escape of air when riser elongated elements are installed in those ports. The riser can include one or more connector lugs disposed between tube portions to facilitate attachment of accessories to the elongated elements. The elongated elements can be bonded, adhered or otherwise fixed to the riser handle, struts, lugs and/or limb pockets, which can be constructed from a metal such as aluminum, titanium or an alloy, and which can handle significant moments and forces transferred via the elongated elements.
    Type: Grant
    Filed: March 7, 2025
    Date of Patent: October 7, 2025
    Assignee: Grace Engineering Corp.
    Inventors: Nathaniel E. Grace, Casey W. Carew
  • Publication number: 20250283702
    Abstract: An archery arrow is provided to include a shaft that is tubular and includes an exterior surface and an opposing interior surface, with an insert secured to the shaft. The insert can define a hole configured to join a component, for example, a broadhead with the arrow. The hole can be round and concentric with the exterior surface of the shaft, and in some cases non-concentric with the interior surface. The insert can be adhered to the shaft and later machined to define the hole to provide the concentricity of the hole and the shaft exterior or an associated outer diameter. When a component such as a broadhead is joined with the arrow via installation in the hole, the component can be centered relative to the shaft exterior. A related method of manufacturing an arrow is provided.
    Type: Application
    Filed: March 5, 2024
    Publication date: September 11, 2025
    Inventor: Nathaniel E. Grace
  • Publication number: 20250244104
    Abstract: An aiming device is provided including an illumination device and an optical element wherein the illumination device projects a primary dot and at least one secondary alignment dot distal from the primary dot to aid a user in obtaining a view of the primary dot when the aiming device is in an aligned mode, the primary dot is visible within a field of view of the user, but the secondary alignment dot is not visible. When the aiming device is in a misaligned mode, the secondary alignment dot is visible to the user, but the primary dot is not. The secondary alignment dot provides instruction to the user to realign the aiming device relative to the field of view of the user so that the aiming device transitions to the aligned mode. A related method of operation is provided.
    Type: Application
    Filed: March 18, 2025
    Publication date: July 31, 2025
    Inventor: Nathaniel E. Grace
  • Publication number: 20250224217
    Abstract: An expandable broadhead is provided with a ferrule defining a slot within which one or more blades are moveably mounted to a pin. A retainer in the slot can secure the blades in a closed mode when an arrow associated with the broadhead is shot from an archery bow. The retainer can include a dimple and a blade can include a retainer hole within which the dimple nests to secure the blade. The retainer hole can be common with and/or extend from a mass reducing opening defined by the blade. The dimple can ride over contours of the blade on a path to enter the hole with significantly less force than that to release the dimple and retainer from, and deploy, the blade. The slot can increase in depth beyond the dimple to reduce frictional engagement of the blades with slot sidewalls during deployment. A related method is provided.
    Type: Application
    Filed: January 8, 2024
    Publication date: July 10, 2025
    Inventor: Nathaniel E. Grace
  • Publication number: 20250207886
    Abstract: An archery bow is provided including opposing limbs and a riser. The riser can include a riser handle and one or more primary riser elongated elements extending away from the handle to respective limbs. The primary riser elongated elements can be straight, elongated round or other shaped tubes, rods or bars constructed optionally from a composite or other material. Vents can be included in ports of the riser to facilitate escape of air when riser elongated elements are installed in those ports. The riser can include one or more connector lugs disposed between tube portions to facilitate attachment of accessories to the elongated elements. The elongated elements can be bonded, adhered or otherwise fixed to the riser handle, struts, lugs and/or limb pockets, which can be constructed from a metal such as aluminum, titanium or an alloy, and which can handle significant moments and forces transferred via the elongated elements.
    Type: Application
    Filed: March 7, 2025
    Publication date: June 26, 2025
    Inventors: Nathaniel E. Grace, Casey W. Carew
  • Patent number: 12276479
    Abstract: An aiming device is provided including an illumination device and an optical element wherein the illumination device projects a primary dot and at least one secondary alignment dot distal from the primary dot to aid a user in obtaining a view of the primary dot when the aiming device is in an aligned mode, the primary dot is visible within a field of view of the user, but the secondary alignment dot is not visible. When the aiming device is in a misaligned mode, the secondary alignment dot is visible to the user, but the primary dot is not. The secondary alignment dot provides instruction to the user to realign the aiming device relative to the field of view of the user so that the aiming device transitions to the aligned mode. A related method of operation is provided.
    Type: Grant
    Filed: September 5, 2023
    Date of Patent: April 15, 2025
    Assignee: Grace Engineering Corp.
    Inventor: Nathaniel E. Grace
  • Patent number: 12264893
    Abstract: An archery bow is provided including opposing limbs and a riser. The riser can include a riser handle and one or more primary riser elongated elements extending away from the handle to respective limbs. The primary riser elongated elements can be straight, elongated round or other shaped tubes, rods or bars constructed optionally from a composite or other material. Vents can be included in ports of the riser to facilitate escape of air when riser elongated elements are installed in those ports. The riser can include one or more connector lugs disposed between tube portions to facilitate attachment of accessories to the elongated elements. The elongated elements can be bonded, adhered or otherwise fixed to the riser handle, struts, lugs and/or limb pockets, which can be constructed from a metal such as aluminum, titanium or an alloy, and which can handle significant moments and forces transferred via the elongated elements.
    Type: Grant
    Filed: October 24, 2023
    Date of Patent: April 1, 2025
    Assignee: Grace Engineering Corp.
    Inventors: Nathaniel E. Grace, Casey Warren Carew
  • Publication number: 20250085077
    Abstract: An archery bow is provided including opposing limbs and a riser. The riser can include a riser handle and one or more primary riser elongated elements extending away from the handle to respective limbs. The primary riser elongated elements can be straight, elongated round or other shaped tubes, rods or bars constructed optionally from a composite or other material. Vents can be included in ports of the riser to facilitate escape of air when riser elongated elements are installed in those ports. The riser can include one or more mounts to facilitate attachment of accessories to the elongated elements. The elongated elements can be bonded, adhered or otherwise fixed to the riser handle, struts, lugs and/or limb pockets, which can be constructed from a metal such as aluminum, titanium or an alloy, and which can handle significant moments and forces transferred via the elongated elements.
    Type: Application
    Filed: November 22, 2024
    Publication date: March 13, 2025
    Inventors: Nathaniel E. Grace, Casey W. Carew, Scott C. Prater
  • Patent number: 12163757
    Abstract: An archery bow assembly is provided including an open sided spacer which is mountable to an axle on an archery bow and removable therefrom without removing the axle entirely or partially from a limb of the archery bow. The spacer can mount on the axle adjacent a cam rotatable on the axle, and can include an outer perimeter and an axle aperture. A recess can extend inward from the outer perimeter to the axle aperture so that the axle aperture and recess form a continuous opening. The spacer can be of a C-shape or E-shape. A cup spacer having an outer rim can capture the open sided spacer to secure it to the axle, yet still allow removal from the axle without removing the axle from the limb arms adjacent the cam. Related methods also are provided.
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: December 10, 2024
    Assignee: Grace Engineering Corp.
    Inventors: Nathaniel E. Grace, Scott C. Prater
  • Publication number: 20240151489
    Abstract: An archery bow is provided including opposing limbs and a riser. The riser can include a riser handle and one or more primary riser elongated elements extending away from the handle to respective limbs. The primary riser elongated elements can be straight, elongated round or other shaped tubes, rods or bars constructed optionally from a composite or other material. Vents can be included in ports of the riser to facilitate escape of air when riser elongated elements are installed in those ports. The riser can include one or more connector lugs disposed between tube portions to facilitate attachment of accessories to the elongated elements. The elongated elements can be bonded, adhered or otherwise fixed to the riser handle, struts, lugs and/or limb pockets, which can be constructed from a metal such as aluminum, titanium or an alloy, and which can handle significant moments and forces transferred via the elongated elements.
    Type: Application
    Filed: October 24, 2023
    Publication date: May 9, 2024
    Inventors: Nathaniel E. Grace, Casey Warren Carew
  • Publication number: 20240011740
    Abstract: An aiming device is provided including an illumination device and an optical element wherein the illumination device projects a primary dot and at least one secondary alignment dot distal from the primary dot to aid a user in obtaining a view of the primary dot when the aiming device is in an aligned mode, the primary dot is visible within a field of view of the user, but the secondary alignment dot is not visible. When the aiming device is in a misaligned mode, the secondary alignment dot is visible to the user, but the primary dot is not. The secondary alignment dot provides instruction to the user to realign the aiming device relative to the field of view of the user so that the aiming device transitions to the aligned mode. A related method of operation is provided.
    Type: Application
    Filed: September 5, 2023
    Publication date: January 11, 2024
    Inventor: Nathaniel E. Grace
  • Patent number: 11852442
    Abstract: An aiming device is provided including an illumination device and an optical element wherein the illumination device projects a primary dot and at least one secondary alignment dot distal from the primary dot to aid a user in obtaining a view of the primary dot when the aiming device is in an aligned mode, the primary dot is visible within a field of view of the user, but the secondary alignment dot is not visible. When the aiming device is in a misaligned mode, the secondary alignment dot is visible to the user, but the primary dot is not. The secondary alignment dot provides instruction to the user to realign the aiming device relative to the field of view of the user so that the aiming device transitions to the aligned mode. A related method of operation is provided.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: December 26, 2023
    Assignee: Grace Engineering Corp.
    Inventor: Nathaniel E. Grace
  • Publication number: 20230119011
    Abstract: An aiming device is provided including an illumination device and an optical element wherein the illumination device projects a primary dot and at least one secondary alignment dot distal from the primary dot to aid a user in obtaining a view of the primary dot when the aiming device is in an aligned mode, the primary dot is visible within a field of view of the user, but the secondary alignment dot is not visible. When the aiming device is in a misaligned mode, the secondary alignment dot is visible to the user, but the primary dot is not. The secondary alignment dot provides instruction to the user to realign the aiming device relative to the field of view of the user so that the aiming device transitions to the aligned mode. A related method of operation is provided.
    Type: Application
    Filed: December 2, 2022
    Publication date: April 20, 2023
    Inventor: Nathaniel E. Grace
  • Publication number: 20230113520
    Abstract: An archery bow assembly is provided including an open sided spacer which is mountable to an axle on an archery bow and removable therefrom without removing the axle entirely or partially from a limb of the archery bow. The spacer can mount on the axle adjacent a cam rotatable on the axle, and can include an outer perimeter and an axle aperture. A recess can extend inward from the outer perimeter to the axle aperture so that the axle aperture and recess form a continuous opening. The spacer can be of a C-shape or E-shape. A cup spacer having an outer rim can capture the open sided spacer to secure it to the axle, yet still allow removal from the axle without removing the axle from the limb arms adjacent the cam. Related methods also are provided.
    Type: Application
    Filed: November 21, 2022
    Publication date: April 13, 2023
    Inventors: Nathaniel E. Grace, Scott C. Prater
  • Patent number: 11619468
    Abstract: An aiming device is provided including an illumination device and an optical element wherein the illumination device projects a primary dot and at least one secondary alignment dot distal from the primary dot to aid a user in obtaining a view of the primary dot when the aiming device is in an aligned mode, the primary dot is visible within a field of view of the user, but the secondary alignment dot is not visible. When the aiming device is in a misaligned mode, the secondary alignment dot is visible to the user, but the primary dot is not. The secondary alignment dot provides instruction to the user to realign the aiming device relative to the field of view of the user so that the aiming device transitions to the aligned mode. A related method of operation is provided.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: April 4, 2023
    Assignee: Grace Engineering Corp.
    Inventor: Nathaniel E. Grace
  • Patent number: 11536532
    Abstract: An archery bow assembly is provided including an open sided spacer which is mountable to an axle on an archery bow and removable therefrom without removing the axle entirely or partially from a limb of the archery bow. The spacer can mount on the axle adjacent a cam rotatable on the axle, and can include an outer perimeter and an axle aperture. A recess can extend inward from the outer perimeter to the axle aperture so that the axle aperture and recess form a continuous opening. The spacer can be of a C-shape or E-shape so that it can be frictionally pressed onto the axle and removed therefrom without removing the axle from the limb arms adjacent the cam. Related methods also are provided.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: December 27, 2022
    Assignee: Grace Engineering Corp.
    Inventors: Nathaniel E. Grace, Scott C. Prater
  • Patent number: 11480407
    Abstract: An archery training aid is provided including a body and a finger rest extending outward at an angle from a base. The finger rest can include a finger rest surface configured to engage one or more fingers of a hand. The base can be configured to be placed in engagement with a first lateral grip surface of a bow grip so that the finger rest surface is disposed at a first angle between 25° to 65°, inclusive, or between 30° and 50°, inclusive, relative to the first lateral grip surface. A related method of use is provided to impair or prevent bow torque imparted by an archer's hand on a bow.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: October 25, 2022
    Assignee: Grace Engineering Corp.
    Inventors: Nathaniel E. Grace, Cody M. Schulz
  • Patent number: D1103323
    Type: Grant
    Filed: April 8, 2024
    Date of Patent: November 25, 2025
    Assignee: Grace Engineering Corp.
    Inventor: Nathaniel E. Grace