Geometrical instruments – Gauge – With point marker
Patent
1996-12-05
1999-03-09
Fulton, Christopher W.
Geometrical instruments
Gauge
With point marker
33 1H, 33 1G, 33624, 33756, 473490, A63C 1906, G01B 310
Patent
active
058785051
ABSTRACT:
The device comprises a pipe (1), in which a shaft (20) of a marking component (2) can be moved. The pipe (1) has a soil anchor (4) at the bottom. The component (2) has a head (21) at the top and can be lifted from a lowered position, in which the head (21) lies next to the top face (14) of the pipe (1) into the lifted position shown against the force of a spring (3). In the lifted position, the component (2) can be stopped by means of a bayonet lock. The device is inserted into the ground vertically at a measuring, e.g., on a soccer field, such that in the lowered position, the top (25) of the head (21) is flush with the ground surface. If the markings on the field need to be renewed, the corresponding components (2) are lifted and stopped. A cord is stretched between two components (2), along which cord a straight line can be marked, or a circle can be drawn with a cord around one of the components (2). The marking of the field can thus be rationalized and expensive re-measuring can be avoided.
REFERENCES:
patent: 661483 (1900-11-01), Barrie
patent: 1037147 (1912-08-01), Johnson
patent: 3668781 (1972-06-01), Teter
patent: 5427383 (1995-06-01), Viens
patent: 5474017 (1995-12-01), Mohebbi et al.
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