The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 1991
Filed:
May. 24, 1989
John E Waldrum, Ambler, PA (US);
Other;
Abstract
A manual, portable spray apparatus is disclosed to enable a worker to spray fields in a remote area where batteries may be difficult to obtain. The apparatus includes a portable chemical liquid storage tank, from which gravity feeds agricultural liquid chemicals to a rotary spray head. The spray head is powered by a small electric motor which receives its electrical current from a portable dynamo. The portable dynamo is rotated by a portable gear train which in turn is functioned by a hand crank. The worker can maintain spraying operations by rotating the crank as he walks and by applying the rotary spray head to the desired areas to be sprayed as the entire apparatus is moved. The dynamo output can be connected to accessory electrical or electronic equipment such as a radio transmitter, a transistor radio or a lamp to thereby achieve maximum utility under all conditions of use.