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:
Mar. 29, 1994
Filed:
Aug. 03, 1992
Edward J Waltonen, Southfield, MI (US);
Robert E Obrecht, Bloomfield Hills, MI (US);
REO Hydraulic Pierce & Form, Inc., Detroit, MI (US);
Abstract
An intensifier cylinder including a body structure defining a first bore, a first piston structure including a piston mounted in the first bore and a piston rod secured to the piston and extending at its forward end through an end wall of the body structure, a second bore defined in the body structure, a second piston structure including a second piston mounted in the second bore and a second piston rod secured by the second piston and movable at its forward end into the first bore upon stroking of the second piston in response to the introduction of pressurized gas into the second bore to seal off and act upon hydraulic fluid in the first bore to produce an intensified force on the first piston structure. The first piston structure includes a ram member including an end wall secured to the forward end of the first piston rod and an annular sleeve secured to the ram member end wall and extending rearwardly in surrounding relation to the second piston rod to define an annular space between the first piston rod and the ram sleeve, and the body structure defines an annular bore surrounding the first bore and slidably receiving the annular sleeve of the ram member.