Point-to-point self-plumbing apparatus and method

Details Point-to-point self-plumbing apparatus and method Point-to-point self-plumbing apparatus and method

1978-08-14

1980-06-10

Stearns, Richard R.

Geometrical instruments

Straight-line light ray type

Alignment device

33227, 33228, 33299, 33DIG1, G01C 1502, G01C 1510

Patent

active

042065500

ABSTRACT:
Plumbing devices (10,30,60) are described comprising a source of light in a gimbal system (12,13,51,72) for providing two oppositely directed aligned vertically oriented beams of light. The gimbal system (12,13,51,72) is removably attached to a support (14,31,61). A handle (14a,45,62) is provided for holding the plumbing device at various distances from underlying and overlying surfaces. Each of the light beams can be focused individually. A windshield (15) is provided for removable attachment to the support for preventing wind induced oscillation of the light source. A rigid frame (32,33,65) is provided for holding the light source in a fixed position relative to an object to be plumbed and for removable attachment to the object while the object is being plumbed.

REFERENCES:
patent: 1660833 (1928-02-01), Cronjaeger
patent: 2517295 (1950-08-01), Esher
patent: 2553668 (1951-05-01), Morello
patent: 2794263 (1957-06-01), Cranmer
patent: 3505739 (1970-04-01), Abrams
patent: 3715808 (1973-02-01), Petrik
patent: 3716920 (1973-02-01), Worthen
patent: 3772797 (1973-11-01), Gleba
patent: 3911588 (1975-10-01), Ohneda

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