Brake cartridges and mounting systems for brake cartridges

• US 20050139058A1
• Filed: 12/31/2004
• Published: 06/30/2005
• Est. Priority Date: 12/31/2003
• Status: Active Grant

• Current Assignee: Sawstop Holding LLC
• Original Assignee: SD3, LLC
• Inventors: Fanning, David A., Gass, Stephen F., Fulmer, J. David
• Granted Patent: US 8,459,157 B2
• Time in Patent Office: Days
• US Class Current: 83/478
• CPC Class Codes: B24B 55/00 Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition of general applicability for machine tools B23Q11/00; in general F16P
• CPC Class Codes: B27B 5/38 Devices for braking the circular saw blade or the saw spindle; Devices for damping vibrations of the circular saw blade, e.g. silencing B23D47/005 takes precedence
• CPC Class Codes: F16D 49/00 Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like similar clutches F16D13/10
• CPC Class Codes: F16P 3/12 with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine F16P3/08 takes precedence
• CPC Class Codes: Y10T 83/081 With randomly actuated stopping means
• CPC Class Codes: Y10T 83/089 Responsive to tool characteristic
• CPC Class Codes: Y10T 83/613 Work guard
• CPC Class Codes: Y10T 83/773 Work-support includes passageway for tool [e.g., slotted table]
• CPC Class Codes: Y10T 83/7734 With guard for tool
• CPC Class Codes: Y10T 83/8773 Bevel or miter cut

Abstract

Safety systems for power equipment, components, brake cartridges and mounting systems for brake cartridges are disclosed. The safety systems, components, brake cartridges and mounting systems are specifically applicable for woodworking equipment such as saws.

Claims

1. A brake cartridge system for use in safety systems for power tools, the system comprising:

a brake cartridge configured to mount in a power tool and adapted to brake a working portion of the power tool when triggered; and

a key adapted to secure the brake cartridge in the power tool.

2. The brake cartridge system of claim 1, where the brake cartridge includes an aperture through which at least part of the key passes.

3. The brake cartridge system of claim 2, where the aperture and key are configured so that the key may pass through the aperture in only one orientation.

4. The brake cartridge system of claim 2, where the key is adapted to turn to lock the brake cartridge in the power tool.

5. The brake cartridge system of claim 4, where the brake cartridge and key are configured so that the key can turn only when a predetermined portion of the key has passed through the aperture.

6. The brake cartridge system of claim 4, further comprising a switch in the brake cartridge adapted to be actuated when the key is turned.

7. The brake cartridge system of claim 1, further comprising a bracket in the power tool configured to receive at least part of the key.

8. The brake cartridge system of claim 7, where the bracket includes an aperture through which at least part of the key passes.

9. The brake cartridge system of claim 8, where the key is adapted to turn to engage the bracket and lock the brake cartridge in the power tool.

10. The brake cartridge system of claim 9, where the aperture in the bracket and the key are configured so that the key can turn only when a predetermined portion of the key has passed through the aperture.

11. The brake cartridge system of claim 9, where the aperture in the bracket and the key are configured so that the key can turn only when the brake cartridge is in a predetermined position.

12. The brake cartridge system of claim 1, where the key includes a handle adapted to be grasped by a user.

13. The brake cartridge system of claim 12, where the handle is configured so that a user may turn the key.

14. A brake cartridge system for use in safety systems for power tools, the system comprising:

a brake cartridge adapted to brake a working portion of the power tool when triggered;

a mounting pin in the power tool; and

an aperture in the brake cartridge configured so that the brake cartridge can be mounted in the saw by sliding on the mounting pin.

15. The brake cartridge system of claim 14, further comprising a second mounting pin in the power tool and a second aperture in the brake cartridge configured to fit the second mounting pin.

16. The brake cartridge system of claim 15, where the pins are spaced apart.

17. A brake cartridge system for use in safety systems for power tools, the system comprising:

a brake cartridge adapted to brake a working portion of the power tool when triggered, where the brake cartridge includes a first connector;

a second connector mounted in the power tool adapted to connect to the first connector in the brake cartridge; and

a mechanism to align the two connectors.

18. The brake cartridge system of claim 17, where the connectors are D-sub connectors.

19. The brake cartridge system of claim 17, where the mechanism to align the two connectors includes at least one projection and at least one receptacle, one being associated with the first connector and the other being associated with the second connector, where the receptacle is configured to receive the projection, and where the first and second connectors can move relative to each other as the projection is received by the receptacle.