Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Desmoulins; Jean-Claude
Address:
Conflans-Sainte-Honorine, FR
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
4074890 Multi-stage hydraulic stretcher for elongated fasteners February 21, 1978
Hydraulic device for exerting a pre-stressing traction on bolts or pins comprises three stages, with each stage comprising a piston within a chamber. The thickness of the skirts of the piston increases from stage to stage in proportion to the pressure to which the piston of that stage is










 
 
  Recently Added Patents
Control apparatus for autonomous operating vehicle
Apparatus with a local timing circuit that generates a multi-phase timing signal for a digital signal processing circuit
Spectral sensor for checking documents of value
Aperture stop
Wearable display device
Permanent magnet rotor with flux concentrating pole pieces
Hand sign
  Randomly Featured Patents
Elevator belt splice
Tubesheet for hollow fiber type, high temperature battery cells
Method of manufacturing an electrical interconnection of a semiconductor device using an erosion protecting plug in a contact hole of interlayer dielectric layer
Bubble memory chip organization-folded loop type
Targeted e-commerce system
Card slot door locking mechanism
Device for purifying exhaust gases
Two-port synthesizer modulation system employing an improved reference phase modulator
Device and method for data encryption
Multimodal quality assessment