Patent US3665812A successfully refreshed from Google Patents.
US3665812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling rectilinear motion
Assignee: CKD Corp
•
Filing: 1970-06-22
•
Granted: 1972-05-30
•
Expires: 1990-06-22
Abstract
Abstract An apparatus for controlling rectilinear motion supplying fluid to the interior of a certain substance performing rectilinear motion along the guide, to expand the elastic body mounted on the substance, causing the elastic body to engage frictionally with the guide, whereby to make the substance stop abruptly, start or stop slowly, vary the speed, move steppingly, and perform clutch action.
Inventors
- 👤 Yoshiaki Hashimoto
- 👤 Masatosi Hayakawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:40
CPC Classifications
G; G05; G05D; G05D13/00; F; F15; F15B; F15B15/00; F15B15/08; F15B15/12; F15B15/14; F15B15/1423; F15B15/1447; F15B15/149; F16; F16D; F16D51/00; F16D51/08; F16D51/10; F16D51/14; F16D63/00; F16D63/008
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
188 words
An apparatus for controlling rectilinear motion comprising: a shaft moving in connection with a substance performing rectilinear motion, the shaft having conduits; at least two sets of bag-shaped elastic bodies held on said shaft, each of said elastic bodies having a bottom; a friction piece fixed on each bottom of said bag-shaped elastic, bodies, the friction piece having an end face; a holder maintaining said elastic bodies on said shaft and providing gaps delta between said holder and the end faces of said friction pieces; a fixed housing for guiding the movement of said shaft and contacting said friction piece; a fluid supply source for supplying fluid through the conduits in said shaft to the bag-shaped space in said elastic body; and a control valve for simultaneously increasing the pRessure of fluid within the bag-shaped spaces of two sets of said elastic bodies and alternately actuating said elastic bodies one after the other by the fluidic pressure pulses so as to cause said friction piece to frictionally contact and disengage said housing, thereby applying brake to said moving substance or causing the substance to perform a stepping motion.
Claim 2
Independent Claim
188 words
An apparatus for controlling rectilinear motion comprising: a shaft moving in connection with a substance performing rectilinear motion, the shaft having conduits; at least two sets of bag-shaped elastic bodies held on said shaft, each of said elastic bodies having a bottom; a friction piece fixed on each bottom of said bag-shaped elastic, bodies, the friction piece having an end face; a holder maintaining said elastic bodies on said shaft and providing gaps delta between said holder and the end faces of said friction pieces; a fixed housing for guiding the movement of said shaft and contacting said friction piece; a fluid supply source for supplying fluid through the conduits in said shaft to the bag-shaped space in said elastic body; and a control valve for simultaneously increasing the pRessure of fluid within the bag-shaped spaces of two sets of said elastic bodies and alternately actuating said elastic bodies one after the other by the fluidic pressure pulses so as to cause said friction piece to frictionally contact and disengage said housing, thereby applying brake to said moving substance or causing the substance to perform a stepping motion.
Claim 3
Dependent Claim
198 words
A cylinder for controlling rectilinear motion, comprising: a fluid supply source; a fluidic pressure operated cylinder performing rectilinear motion, the cylinder having a barrel; a piston rod in said cylinder, the piston rod having conduits; at least two sets of bag-shaped elastic bodies held on the piston rod of said cylinder, each of said elastic bodies having a bottom; a friction piece fixed on each bottom of said bag-shaped elastic bodies, the friction piece having an end face; a holder maintaining said elastic bodies on said piston rod and providing gaps delta between said holder and the end faces of said friction pieces; and a fluid control valve for supplying fluid from the fluid supply source through the conduits in said piston rod to the bag-shaped spaces of said elastic bodies, said control valve simultaneously increasing the pressure of fluid within the bag-shaped spaces of two sets of said elastic bodies or alternately actuating said elastic bodies one after the other by the fluidic pressure pulses so as to cause said friction piece to frictionally contact or disengage the barrel of said cylinder, thereby applying brake to the piston or causing the piston to perform a stepping motion.
Claim 4
Dependent Claim
198 words
A cylinder for controlling rectilinear motion, comprising: a fluid supply source; a fluidic pressure operated cylinder performing rectilinear motion, the cylinder having a barrel; a piston rod in said cylinder, the piston rod having conduits; at least two sets of bag-shaped elastic bodies held on the piston rod of said cylinder, each of said elastic bodies having a bottom; a friction piece fixed on each bottom of said bag-shaped elastic bodies, the friction piece having an end face; a holder maintaining said elastic bodies on said piston rod and providing gaps delta between said holder and the end faces of said friction pieces; and a fluid control valve for supplying fluid from the fluid supply source through the conduits in said piston rod to the bag-shaped spaces of said elastic bodies, said control valve simultaneously increasing the pressure of fluid within the bag-shaped spaces of two sets of said elastic bodies or alternately actuating said elastic bodies one after the other by the fluidic pressure pulses so as to cause said friction piece to frictionally contact or disengage the barrel of said cylinder, thereby applying brake to the piston or causing the piston to perform a stepping motion.
Claim 5
Dependent Claim
245 words
A cylinder for controlling rectilinear motion, comprising: a fluid supply source; a fluidic pressure operated cylinder performing rectilinear motion, the cylinder having a barrel; a piston rod in said cylinder, the piston rod having conduits; at least two sets of bag-shaped elastic bodies held on the piston rod of said cylinder, each of said elastic bodies having a bottom; a friction piece fixed on each bottom of said bag-shaped elastic bodies, the friction piece having an end face; an indicator provided on the longitudinal exterior surface of said piston rod; a detector arranged adjacent to said piston rod for detecting the position of said indicator, the detector having an output; a circuit to which the output from said detector is added; a holder maintaining said elastic body on the piston rod and providing gaps delta between said holder and the end face of said friction piece; and a fluid control valve for supplying fluid from the fluid supply source through the conduits in said piston rod to the bag-shaped spaces of said elastic bodies, said control valve simultaneously increasing the pressure of fluid within the bag-shaped spaces of two sets of said elastic bodies or alternately actuating said elastic bodies one after the other by the fluidic pressure pulses so as to cause said friction piece to frictionally contact or disengage the barrel of said cylinder, thereby applying brake to the rectilinear movement of the piston or causing the piston to perform a stopping motion.
Claim 6
Dependent Claim
245 words
A cylinder for controlling rectilinear motion, comprising: a fluid supply source; a fluidic pressure operated cylinder performing rectilinear motion, the cylinder having a barrel; a piston rod in said cylinder, the piston rod having conduits; at least two sets of bag-shaped elastic bodies held on the piston rod of said cylinder, each of said elastic bodies having a bottom; a friction piece fixed on each bottom of said bag-shaped elastic bodies, the friction piece having an end face; an indicator provided on the longitudinal exterior surface of said piston rod; a detector arranged adjacent to said piston rod for detecting the position of said indicator, the detector having an output; a circuit to which the output from said detector is added; a holder maintaining said elastic body on the piston rod and providing gaps delta between said holder and the end face of said friction piece; and a fluid control valve for supplying fluid from the fluid supply source through the conduits in said piston rod to the bag-shaped spaces of said elastic bodies, said control valve simultaneously increasing the pressure of fluid within the bag-shaped spaces of two sets of said elastic bodies or alternately actuating said elastic bodies one after the other by the fluidic pressure pulses so as to cause said friction piece to frictionally contact or disengage the barrel of said cylinder, thereby applying brake to the rectilinear movement of the piston or causing the piston to perform a stopping motion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |