Cutting – Rotatable disc tool pair or tool and carrier – Carrier for rotatable tool movable during cutting
Patent
1986-06-09
1988-10-25
Eley, Timothy V.
Cutting
Rotatable disc tool pair or tool and carrier
Carrier for rotatable tool movable during cutting
29760, 29271, 292811, B23D 1900
Patent
active
047795018
ABSTRACT:
A fluorescent lamp can be installed in or detached from a high installation position by a device comprising: a lamp supporting member having a trough-like interior for accommodating the lamp; an elongatable rod connected to the lamp supporting member and being held at its lower part by hand for raising or lowering the lamp to or from the installation position; bag members disposed in the trough-like interior of the lamp supporting member on one lateral side thereof and being expanded and contracted by a fluid supplied thereinto and discharged therefrom thereby to gently but firmly holding the lamp against a support member on the other lateral side and releasing the lamp; and a controllable pump mechanism for thus supplying and discharging the fluid.
REFERENCES:
patent: 4581481 (1986-04-01), Moretti
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