Soil sampling device with latch assembly having a variable circu

Details Soil sampling device with latch assembly having a variable circu Soil sampling device with latch assembly having a variable circu

1995-06-16

1996-12-24

Williams, Hezron E.

Measuring and testing

Sampler, sample handling, etc.

Capture device

175 20, G01N 108

Patent

active

055875408

ABSTRACT:
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any possibility of jamming of the rod on a retraction stroke until such time as it is positively retained in the fully withdrawn position.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.

REFERENCES:
patent: 1027246 (1912-05-01), Granville
patent: 2709368 (1955-05-01), Wolpert
patent: 3367188 (1968-02-01), Robinson
patent: 3704627 (1972-12-01), Beaudoux
patent: 3978733 (1976-09-01), Avot
patent: 4329882 (1982-05-01), Kaup
patent: 4558749 (1985-12-01), Fulkerson
patent: 4633957 (1987-01-01), Prost
patent: 5076392 (1991-12-01), Koenig
patent: 5125266 (1992-06-01), Ingram et al.
patent: 5127261 (1992-07-01), Ingram et al.
patent: 5211249 (1993-05-01), Richter et al.

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