Hold-down device

Details Hold-down device Hold-down device

1988-01-22

1989-05-16

Reese, Randolph A.

Joints and connections

With adjunctive protector, broken parts retainer, repair,...

Holding means or protector functioning only during...

403105, 29225675, F16B 100, F16B 3102

Patent

active

048305308

ABSTRACT:
A hold-down device is shown for connecting a chassis to a rack under a predetermined force and for extracting the chassis from the rack. The device includes a threaded bolt which receives a tubular, internally threaded clutch drive shaft having an integral clutch plate. A clutch drive disc slides over the shaft to engage the clutch plate, while a ratchet cam slides over the clutch drive disc. The ratchet cam has a set of ratchet teeth that engage similar teeth on the hook connector that slides over the shaft from the opposite side of the clutch plate. Belleville spring washers urge the clutch plate and clutch drive disc into engagement, while other springs urge the ratchet teeth apart. A knob fits over the springs and slides over the shaft and an extractor slides over the shaft from the opposite direction to complete the device.

REFERENCES:
patent: 3212746 (1965-10-01), Wright
patent: 3640141 (1972-02-01), Hollingsead et al.
patent: 3796950 (1974-03-01), Weber
patent: 3866878 (1975-02-01), Yamamoto
patent: 4506439 (1985-03-01), Roarke
patent: 4534234 (1985-08-01), Cosenza

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