Blade guard for saw of saw house and method

Patent metadata

Field	Value
Publication number	US-12122007-B2
Application number	US-202217683509-A
Country	US
Kind code	B2
Filing date	Mar 1, 2022
Priority date	Apr 26, 2019
Publication date	Oct 22, 2024
Grant date	Oct 22, 2024

Abstract

A blade guard assembly for a circular saw blade of a saw house includes a blade cover with a face panel and an edge portion that extends from the face panel. An actuator is mountable the blade cover and the structure of the saw house. When the blade guard assembly is mounted in saw house, the blade cover is movable with the actuator between a covered position and an exposed position. In the covered position, the face panel and edge portion at least partially surround the saw blade. In the exposed position, the face panel is spaced from the saw blade.

First claim

What is claimed is:

1. A method of operating a saw, wherein the saw comprises a saw house with an interior and an access opening to the interior, the method comprising:
stopping a cutting operation of at least one circular saw blade, the at least one circular saw blade being in the interior of the saw house, the stopping of the cutting operation including stopping rotation of the at least one circular saw blade, and the stopping of the cutting operation further including stopping orbital movement of an arm of the saw within the interior of the saw house;
moving the at least one circular saw blade to a known position in the interior of the saw house; and
moving at least one blade cover for the at least one circular saw blade from an exposing position in which the at least one blade cover is spaced from the at least one circular saw blade to allow the at least one circular saw blade to rotate and the arm of the saw to orbitally move within the interior of the saw house for cutting an object within the interior of the saw house to a covering position in which the at least one blade cover at least partially covers a cutting edge of the at least one circular saw blade with the at least one circular saw blade in the known position, wherein the at least one blade cover is mounted to a structure of the saw house within the interior of the saw house such that the at least one blade cover remains stationary when in the exposing position while the at least one circular saw blade is translated within the interior of the saw house during the cutting operation, the at least one blade cover has a face panel and an edge portion extending from the face panel, and in moving the at least one blade cover to the covering position with the at least one circular saw blade in the known position, the face panel is moved adjacent to a face of the at least one circular saw blade and the edge portion is moved adjacent to at least a portion of the cutting edge of the at least one circular saw blade.

2. The method of claim 1 , further comprising:
unlocking the access opening to the saw house when the at least one blade cover is in the covering position with the at least one circular saw blade in the known position to allow access to the interior of the saw house.

3. The method of claim 2 , wherein the step of unlocking the access opening to the saw house includes enabling a control of the saw house to: (i) receive a first signal from a sensor in the saw house indicating that the at least one blade cover is in the covering position, and (ii) in response thereto, generate a second signal to unlock the access opening of the saw house.

4. The method of claim 2 , further comprising accessing the interior of the saw house and then locking the access opening to the saw house when access to the interior of the saw house is complete.

5. The method of claim 1 , wherein the step of moving the at least one blade cover from the exposing position to the covering position includes moving the at least one blade cover from a first position where the face panel of the at least one blade cover conforms to an interior top frame of the saw house to a second position in which the face panel extends transversely relative to the interior top frame of the saw house.

6. The method of claim 1 , further comprising:
moving the at least one blade cover to the exposing position in which the face panel and the edge portion of the at least one blade cover are spaced from the at least one circular saw blade; and
resuming the cutting operation of the at least one circular saw blade in the saw house by rotating the at least one circular saw blade and orbitally moving the arm of the saw to cut the object within the interior of the saw house.

7. The method of claim 6 , wherein the step of moving the at least one blade cover to the exposing position includes enabling a control of the saw house to: (i) receive a first signal from the access opening indicating that the access opening is locked, and (ii) in response thereto, generate a second signal to move the at least one blade cover to the exposing position.

8. The method of claim 1 , wherein the step of moving the at least one circular saw blade to the known position includes moving the at least one circular saw blade to a position adjacent to an interior top frame of the saw house.

9. The method of claim 1 , wherein the step of moving the at least one blade cover from the exposing position to the covering position includes pivoting the at least one blade cover away from an interior top frame of the saw house.

10. A method of operating a saw, wherein the saw comprises a saw house with an interior and an access opening to the interior, the method comprising:
disabling the saw from a cutting operation in the interior of the saw house by: (i) stopping rotation of a circular saw blade within the interior of the saw house, and (ii) stopping orbital movement of an arm of the saw within the interior of the saw house;
moving the circular saw blade to a known position in the interior of the saw house; and
moving a blade cover for the circular saw blade from an exposing position in which the blade cover is sufficiently spaced from the circular saw blade to allow the circular saw blade to rotate and the arm of the saw to orbitally move within the interior of the saw house for cutting an object within the interior of the saw house to a covering position in which the blade cover at least partially covers a cutting edge of the circular saw blade with the circular saw blade in the known position, wherein the blade cover is mounted to a structure of the saw house within the interior of the saw house such that the blade cover remains stationary when in the exposing position while the circular saw blade is translated within the interior of saw house during the cutting operation, the blade cover has a face panel and an edge portion extending from the face panel, and in moving the blade cover to the covering position with the circular saw blade in the known position, the face panel is moved adjacent to a face of the circular saw blade and the edge portion is moved adjacent to at least a portion of the cutting edge of the circular saw blade.

11. The method of claim 10 , wherein the step of moving the blade cover from the exposing position to the covering position includes moving the blade cover from a first position where the face panel of the blade cover conforms to an interior top frame of the saw house to a second position in which the face panel extends transversely relative to the interior top frame of the saw house.

12. The method of claim 10 , further comprising:
unlocking the access opening to the saw house when the blade cover is in the covering position with the circular saw blade in the known position to allow access to the interior of the saw house.

13. The method of claim 12 , wherein the step of unlocking the access opening to the saw house includes enabling a control of the saw house to: (i) receive a first signal from a sensor in the saw house indicating that the blade cover is in the covering position, and (ii) in response thereto, generate a second signal to unlock the access opening of the saw house.

14. The method of claim 13 , further comprising accessing the interior of the saw house, and locking the access opening to the saw house when access to the interior of the saw house is complete.

15. The method of claim 10 , wherein the step of moving the circular saw blade to the known position includes moving the circular saw blade to a position adjacent to an interior top frame of the saw house.

16. The method of claim 10

Assignees

• Paper Converting Machine Co
• Bw Converting Inc

Inventors

• Chike Matthew J

Classifications

• B26D7/22

  Safety devices specially adapted for cutting machines (safety devices in general F16P) · CPC title

• B26D1/15

  with vertical cutting member · CPC title

• B23D45/042

  with the saw blade carried by a pivoted lever (B23D45/028, B23D45/065 take precedence) · CPC title

• B23Q11/0078

  Safety devices protecting the operator, e.g. against accident or noise (protecting the machine tool B23Q5/58; protecting people, in general F16P1/00, F16P3/00) · CPC title

• B23Q11/08 Primary

  Protective coverings for parts of machine tools; Splash guards · CPC title