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. 13, 1995
Filed:
Jul. 25, 1994
Miro S Cater, Newtown, CT (US);
Newburgh Mfg Corporation, Newburgh, NY (US);
Abstract
A vertical hollow cylinder has a recess adjacent an upper end and a lower end constituting a throat. A vertical hollow outer piston is slidable in the cylinder with upper section extending above the cylinder and a lower section disposed within the cylinder. The lower section has first and second vertically spaced horizontal extensions disposed in slidable sealing engagement with the cylinder wall and has a third extension in slidable sealing engagement with the throat. The outer piston also has first and second vertically spaced channels extending from the second inner wall into the interior of the cylinder which are disposed respectively above the first extension and below the second extension. A lower variable volume is defined by a portion of the cylinder wall subtended between the second and third extensions and communicates with the second channel. A member is disposed within the recess, in sealing engagement with the upper section of the outer piston and cylinder wall. An upper variable volume is defined by another portion of the cylinder wall subtended between the member and the first extension and communicates with the first channel. A hollow vertical actuator is slidable in the outer piston and defines a discharge channel. A vertical hollow inner piston engages the interior of the actuator and has between its ends upper and lower vertically spaced skirts in slidable sealing engagement with the wall of the outer piston. The inner piston has a third channel which extends to the discharge orifice. second channel communicates only with the third channel.