Electric umbrella

Details Electric umbrella Electric umbrella

1990-11-13

1993-05-25

Raduazo, Henry E.

Tent, canopy, umbrella, or cane

Umbrella

Mechanically operated

135 22, A45B 2514

Patent

active

052131220

ABSTRACT:
This invention relates to umbrellas in general. In particular it relates to umbrellas which automatically open and close. This automatic opening and closing of the umbrella is accomplished by means of the rotation of a threaded rod or with force exerted by compressed gas.
The improvements disclosed herein relate to improved means for more economically controlling the source of motive power used to open and close the umbrella.
A key improvement disclosed herein include a means for conserving the power of the batteries used to power the motor which causes the threaded rod to open and close the umbrella embodiment utilizing this means of opening and closing.
An additional improvement disclosed is the use of a multiple lead threaded rod which avoids the binding and "cross-threading" of previous designs.

REFERENCES:
patent: 338986 (1886-03-01), Leistner
patent: 3129715 (1964-04-01), Militano
patent: 3213868 (1965-10-01), Forbes
patent: 4424824 (1984-01-01), Becher
patent: 4543971 (1985-10-01), Sirota
patent: 4572226 (1986-02-01), Williams
patent: 4736761 (1988-04-01), Warfield
patent: 4766920 (1988-08-01), Grady

Affiliated with

Also associated with

Rating

Electric umbrella does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electric umbrella, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric umbrella will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-891626