WO1993005361A1 - Niveau a bulle multiple - Google Patents

Niveau a bulle multiple Download PDF

Info

Publication number
WO1993005361A1
WO1993005361A1 PCT/EP1992/001736 EP9201736W WO9305361A1 WO 1993005361 A1 WO1993005361 A1 WO 1993005361A1 EP 9201736 W EP9201736 W EP 9201736W WO 9305361 A1 WO9305361 A1 WO 9305361A1
Authority
WO
WIPO (PCT)
Prior art keywords
spirit level
dragonfly
level according
light
light source
Prior art date
Application number
PCT/EP1992/001736
Other languages
German (de)
English (en)
Inventor
Leo Ruh
Gerhard Ruh
Original Assignee
Leo Ruh
Gerhard Ruh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Leo Ruh, Gerhard Ruh filed Critical Leo Ruh
Publication of WO1993005361A1 publication Critical patent/WO1993005361A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
    • G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
    • G01C9/26—Details
    • G01C9/32—Means for facilitating the observation of the position of the bubble, e.g. illuminating means

Definitions

  • the object of the present invention is to create a spirit level in which the markings and the gas bubbles of the dragonflies are clearly visible even in semi-darkness or even in complete darkness.
  • the spirit level which is the subject of the invention, is equipped with special, illuminated dragonflies.
  • the use of light is also improved with the help of reflectors, which are attached to the side of the dragonflies. Show it:
  • FIG. 1 shows a perspective view of a spirit level 1 with illuminated dragonflies 2 2 shows a longitudinal section through a spirit level 1 with illuminated dragonflies 2 in the area of two dragonflies 2, the associated lamp compartments 4 and the battery compartment 5
  • the vials 2 of the proposed spirit level 1 are illuminated with an electric light source in the form of incandescent lamps 6.
  • the incandescent lamps 6 are accommodated in lamp rooms 4 which directly adjoin the rooms 9 in which the dragonflies 2 are located.
  • the lamp spaces 4 are opened 7 towards the bubble spaces 9, so that the light from the incandescent lamps 6 can enter the dragonfly spaces 9.
  • translucent glass plates 8 or scattering light filters 8 are installed in these openings 7.
  • the lamp spaces 4 are accessible from the outside of the spirit level 1. They can be opened and closed by means of appropriate covers 11. For this purpose, cover 11 that can be plugged on, screwed on or moved can be selected.
  • the light bulbs 6 are powered by one or more batteries 10.
  • the batteries 10 are accommodated in a special battery compartment 5.
  • This battery compartment 5 is also accessible from the outside via a cover 11, so that the batteries 10 can be exchanged easily if required.
  • An embodiment of the spirit level 1 that is independent of the battery current is also provided.
  • the water level 1 of this type of training is equipped on its surface with solar cells 12. If the spirit level 1 is in the light, the solar cells 12 emit current to an accumulator 10, which is located here instead of a normal battery in the battery compartment 5. The accumulator 10 is thereby charged and can later supply the light bulbs 6 with current.
  • the incandescent lamps 6 can be switched on and off by means of one or more switches 13.
  • the switches 13 are attached to the surface of the spirit level 1 in an easily accessible manner. Toggle switches, slide switches or pressure switches can be used.
  • the incandescent lamps 6, the batteries or accumulators 10, the Switches 13 and the solar cells 12 are connected to one another by cables 14 which run inside the spirit level 1.
  • the weakest possible light bulbs 6 could be used, which consume correspondingly little electricity. If the power consumption is low, the batteries 10 have to be changed less often in the embodiment without solar cells 12, while in the embodiment with solar cells 12 the charge of the accumulator 10 is sufficient for a longer lighting period.
  • the following measures achieve better utilization of the light: As a first measure, mirrored reflectors 15 are attached in the lamp rooms 4, on the wall which faces away from the dragonfly room 9. These reflectors 15 throw the light, which does not emit in the direction of the dragonflies 2, back into the dragonfly spaces 9.
  • the liquid 16 in the dragonflies 2 is colored with a bright, fluorescent color.
  • the fluorescent color has the ability to convert the invisible light waves into visible light, which leads to a better use of the light.
  • a reflector 3 is attached to the level 2 arranged on the longitudinal edge of the spirit level 1, behind the gas bubble 17, that is to say on the rear side of the level space 9.
  • the reflector 3 can be designed in various ways. Plug-in, pivotable or displaceable reflectors 3 are conceivable. However, fixed reflectors 3 are particularly suitable. They cover the rear wall and the two transverse walls of the dragonfly chamber 9 (cf. FIGS. 1 and 2), that is to say the two narrow sides of the dragonfly chamber 9 adjoining the opening 7, whereby they with the other dragonfly 2 arranged in the circular space, apart from the opening 7, can extend around the entire inside of the dragonfly space 9.
  • the reflectors 3 are preferably made of a light-colored. thin plastic film or a thin plastic film, which has a fluorescent layer on the inside.
  • the reflector 3 When used, the reflector 3 is arranged behind the gas bubble 17. It throws the light which strikes it back onto the gas bladder 17, as a result of which the weak light which is present is better used. Reflectors 3, which are provided with a fluorescent layer, can additionally convert light waves of the non-visible area into light of the visible area and thereby make better use of the weak light present.
  • the proposed spirit level 1 with illuminated dragonflies 2 has significant advantages over the previously known spirit levels.
  • the reflectors 3, 15 and the fluorescent liquid 16 allow the use of weak incandescent lamps 6 with low power consumption, which improves the user-friendliness. This expresses itself in the fact that in the spirit levels 1, which are operated with normal batteries 10, the batteries 10 have to be replaced less often and in the case of spirit levels 1 with solar cells 12, the charge of the accumulator 10 is sufficient for a longer duration of illumination.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Un niveau à bulle multiple (1) comprend plusieurs niveaux à bulle (2) pourvus d'éléments d'éclairage (6, 10, 12, 15) et de réflecteurs de lumière (3), de façon qu'il est possible de travailler avec un tel niveau à bulle multiple (1) dans une semi-obscurité ou dans l'obscurité totale, puisque même dans ces mauvaises conditions d'éclairage la position des bulles de gaz (17) des niveaux à bulle (2) est nettement visible. Les éléments d'éclairage sont des lampes à incandescence (6) montées dans des zones (4) situées sur le côté des niveaux à bulle (2), et alimentées en courant par des piles ou des accumulateurs (10). Le niveau à bulle multiple (1) peut être équipé de cellules solaires (12) servant à recharger les accumulateurs (10). Pour permettre une meilleure utilisation de la lumière existante ou de la lumière provenant des éléments d'éclairage du niveau à bulle, des réflecteurs (3) en forme de plaquettes et de couleur claire sont disposés derrière les bulles de gaz (17). Des réflecteurs fixes (3) qui couvrent une paroi longitudinale et les deux parois transversales ou bien le côté intérieur des espaces (9) dans lesquels sont logés les niveaux à bulle, sont particulièrement appropriés.
PCT/EP1992/001736 1991-09-04 1992-07-31 Niveau a bulle multiple WO1993005361A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2591/91-7 1991-09-04
CH259191 1991-09-04

Publications (1)

Publication Number Publication Date
WO1993005361A1 true WO1993005361A1 (fr) 1993-03-18

Family

ID=4237227

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/001736 WO1993005361A1 (fr) 1991-09-04 1992-07-31 Niveau a bulle multiple

Country Status (2)

Country Link
AU (1) AU2386892A (fr)
WO (1) WO1993005361A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2406379A (en) * 2003-09-29 2005-03-30 Nigel John Morgan Spirit level with illumination means
US7484307B2 (en) * 2006-10-16 2009-02-03 The Stanley Works Level with uninterrupted marking surface with high-visibility center vial
US10001371B2 (en) 2014-11-13 2018-06-19 Milwaukee Electric Tool Corporation Level

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3120915A1 (de) * 1981-05-26 1983-03-31 Ernst 1000 Berlin Koch Wasserwaage mit beleuchteten libellen
US4392184A (en) * 1981-02-20 1983-07-05 Hearold Owen E Illuminating method and apparatus for carpenter's or mechanic's levels
EP0381373A1 (fr) * 1989-01-31 1990-08-08 Brendan Thomas Sheehan Dispositif d'affichage d'orientation
DE4008039A1 (de) * 1990-03-14 1990-10-25 Roland Neubert Wasserwaage mit leuchtender libellenoptik
US5020232A (en) * 1990-04-12 1991-06-04 Whiteford Carlton L Illuminated level

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4392184A (en) * 1981-02-20 1983-07-05 Hearold Owen E Illuminating method and apparatus for carpenter's or mechanic's levels
DE3120915A1 (de) * 1981-05-26 1983-03-31 Ernst 1000 Berlin Koch Wasserwaage mit beleuchteten libellen
EP0381373A1 (fr) * 1989-01-31 1990-08-08 Brendan Thomas Sheehan Dispositif d'affichage d'orientation
DE4008039A1 (de) * 1990-03-14 1990-10-25 Roland Neubert Wasserwaage mit leuchtender libellenoptik
US5020232A (en) * 1990-04-12 1991-06-04 Whiteford Carlton L Illuminated level

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2406379A (en) * 2003-09-29 2005-03-30 Nigel John Morgan Spirit level with illumination means
US7484307B2 (en) * 2006-10-16 2009-02-03 The Stanley Works Level with uninterrupted marking surface with high-visibility center vial
US10001371B2 (en) 2014-11-13 2018-06-19 Milwaukee Electric Tool Corporation Level
US10731982B2 (en) 2014-11-13 2020-08-04 Milwaukee Electric Tool Corporation Level
US11391568B2 (en) 2014-11-13 2022-07-19 Milwaukee Electric Tool Corporation Level

Also Published As

Publication number Publication date
AU2386892A (en) 1993-04-05

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