McMillan Design (Sea Catch) Equipment
Sea Catch Toggle Release
Sea Catch Toggle Release: stainless steel quick release using an over-center toggle linkage to secure, release under load and dampen shock; SWL 1,302 to 154,240 lbs.
Description
The Sea Catch Toggle Release is a patented mechanical quick release designed exclusively for releasing an object or line under load. It uses an over-center four-point toggle linkage to secure a load, release it and dampen shock. Models run from the TR3 to the TR18.
Key features
- All parts 100% stainless steel, cut from aerospace-grade 17-4 PH stainless steel plate and heat treated to H-1025; no springs
- Common shackle connection, perpendicular or parallel release directions, hitch pin safety lock
- Low friction, low effort lanyard-style release; on load/off load releasing
- SWL is 5:1 to break load; from the TR3 (1,302 lbs SWL) to the TR18 (154,240 lbs SWL)
- TR7 prototype was proof loaded to 5,000 and 10,000 lbs, released with about 40 lbs effort and broke at 35,210 lbs
- TR18 units are used in pairs for push tug/barge connections with a hydraulic shaft clevis
Applications
Oceanographic and ROV deployment, buoy and anchor release, rig mooring, tug and tow emergency release, ship launching, skiff and seine release, rescue boat release and drop testing.
Specifications
| Material | 17-4 PH stainless steel |
|---|---|
| SWL ratio | 5:1 to Breakload |
| TR3 SWL / break load | 1,302 lbs (.65 s tons) / 6,510 lbs (3.2) |
| TR5 SWL / break load | 3,323 lbs (1.6) / 16,618 lbs (8.3) |
| TR7 SWL / break load | 7,042 lbs (3.52) / 35,210 lbs (17.6) |
| TR8 SWL / break load | 9,574 lbs (4.78) / 47,870 lbs (23.93) |
| TR10 SWL / break load | 15,840 lbs (7.92) / 79,200 lbs (39.6) |
| TR11 SWL / break load | 28,000 lbs (14) / 140,000 lbs (70) |
| TR12 SWL / break load | 32,860 lbs (16.43) / 164,300 lbs (82.15) |
| TR15 SWL / break load | 50,200 lbs (25.1) / 251,000 lbs (125.5) |
| TR16 SWL / break load | 63,380 lbs (31.69) / 316,900 lbs (158.45) |
| TR17 SWL / break load | 94,740 lbs (47.37) / 473,700 lbs (236.85) |
| TR18 SWL / break load | 154,240 lbs (77.12) / 771,200 lbs (385.6) |
| Shackle size range | 1/4" (TR3) to 3" (TR18) |
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