Soil sampling device with latch assembly having a variable circumferential shape
Patent
·
OSTI ID:415741
The invention relates to an improved sampler which can be operated in any orientation. The design features a positive gripping of the operating rod in a manner to reduce point loads so as to reduce any possibility of jamming of the rod on a retraction stroke until such time as it is positively retained in the fully withdrawn position. In the preferred embodiment, a pair of mating cylindrical latch pieces, held together by a circumferential spring, are used for positive actuation. The inner rod has an angular cut-out which provides the base for the latch when aligned with the latch. A release fixture can be used to free the latch from the cone rod after actuation. The latches are formed in such a manner as they may support themselves within the housing of the sampler until they engage the operating rod. 11 figs.
- Research Organization:
- AT&T Corporation
- DOE Contract Number:
- AC04-76DP00789
- Assignee:
- SNL; PA: EDB-97:016573; SN: 97001714592; SCA: 540220
- Patent Number(s):
- US 5,587,540/A/
- Application Number:
- PAN: 8-491,281
- OSTI ID:
- 415741
- Country of Publication:
- United States
- Language:
- English
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