Top loading precision balance with a draft protection device com

Details Top loading precision balance with a draft protection device com Top loading precision balance with a draft protection device com

1993-09-10

1996-12-10

Brown, Brian W.

Weighing scales

With casing closure or shield

177126, 177238, 24455, 16342, 220264, 220336, 312263, 3123192, 403316, 403327, G01G 2100, G01G 2128

Patent

active

055833225

ABSTRACT:
A top-loading precision balance with a draft protection device which includes several walls connected to each other at the edges thereof, and a cover which closes the opening defined at the top of the walls. The cover is fastened through a horizontally extending hinge to one of the walls. The hinge of the cover includes a spring which acts against the direction of movement for closing the cover. The spring mounted in the hinge is a torsion spring which is fixed at both ends thereof. The frame forming the bottom of the draft protection device has on its bottom side a groove into which lugs mounted on the balance housing engage when the draft protection device is placed on the balance housing. A spring is fastened at the groove of the frame under the front side of the draft protection device. The spring engages in a groove of one of the lugs.

REFERENCES:
patent: 3250585 (1966-05-01), McQuarrie et al.
patent: 3498207 (1970-03-01), Hazen
patent: 3810275 (1974-05-01), Smith
patent: 3941300 (1976-03-01), Troth
patent: 4148106 (1979-04-01), Gallien
patent: 4356594 (1982-11-01), Grosemans
patent: 4862978 (1989-09-01), Borchard
patent: 4921058 (1990-05-01), Pally et al.
patent: 5253391 (1993-10-01), Ojima

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