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. 30, 1998
Filed:
Aug. 29, 1996
Nicholas Antonelli, Harrison, NY (US);
Pitney Bowes Inc., Stamford, CT (US);
Abstract
Solenoid apparatus having a substantially cylindrical casing, an electro-magnetic coil, a plunger axially aligned and slideably mounted to the casing, a housing hermetically mounted to an end of the casing and a vacuum source operatively coupled to the external port. The plunger has a first end extending outside of the casing, a second end and an internal passage extending from the first end to the second end. The electro-magnetic coil is selectively energizeable for moving the plunger between a first position and a second position. The housing corresponds to the plunger second end to define an inner chamber which encloses the plunger second end. The housing includes an external port connected to the inner chamber so as to provide an unobstructed pathway from the external port to the first end of the plunger via the internal passage and the inner chamber regardless of whether the plunger is in the first position, the second position or therebetween. The vacuum source is selectively activatable for generating negative pressure at the first end of the plunger via the inner chamber and the internal passage.