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:
May. 09, 2000
Filed:
Jun. 05, 1998
Glenn M Campbell, Maple Grove, MN (US);
Douglas Kluge, Clearwater, MN (US);
The Saunders Group, Inc., Chaska, MN (US);
Abstract
A hand pump system for pressurizing and de-pressurizing a pneumatic cylinder on a traction device. The hand pump system includes a hand pump having a pump head with a vent hole. A flow control assembly has a stem portion extending into the pump head. The stem portion has a primary chamber fluidly coupled to the pneumatic cylinder and a stem passageway extending through the stem portion. The housing is rotatable within the pump head between a pump position fluidly coupling the stem passageway with the pump; to a release position fluidly coupling the stem passageway with the vent hole; and to a positive shut off position to seal the vent hole with a vent seal and to seal the stem passageway with a pump seal. A pressure gauge is included in the flow control assembly fluidly coupled to the primary chamber.