Liquid purification or separation – With repair or assembling means
Patent
1989-11-09
1991-07-02
Spitzer, Robert
Liquid purification or separation
With repair or assembling means
209402, 209403, 210400, 210499, B01D 33056
Patent
active
050283243
ABSTRACT:
A lock mechanism for use with a screen having a generally square or rectangular configuration and elongated hooks or flanges along two opposed side edges thereof, and rails which extend along and engage the hooks. The lock mechanism comprises at least one arm and a crank. The arm has an outer end coupled to a rail and an inner end pivotably connected to the crank. The crank is rotatable about an axis and it is pivotably connected to the arm on an axis which is spaced from the axis of rotation. Rotation of the crank in one direction causes the arm to be extended outwardly and stretch the screen; rotation of the crank in the other direction retracts the arm and relaxes the screen. A lock is provided between the arm and the crank to hold the arm extended, and a spring is preferably provided between the arm and the associated rail. Preferably a second arm, connected similarly to the first mentioned arm, connects the crank with the other rail.
REFERENCES:
patent: 1919485 (1933-07-01), Soldan
patent: 2190993 (1940-02-01), Muir
patent: 2609930 (1952-09-01), Soldan
patent: 2825461 (1958-03-01), Hannon
patent: 2899059 (1959-08-01), Schroth
patent: 2899060 (1959-08-01), Schroth
patent: 3077990 (1963-02-01), Peterson
patent: 3101314 (1963-08-01), Johnson
patent: 3219065 (1965-11-01), Moeller
patent: 3307704 (1967-03-01), Pashaian et al.
patent: 3346114 (1967-10-01), Hoyt
patent: 3469695 (1969-09-01), Greeninger
patent: 3718963 (1973-03-01), Hawkins et al.
patent: 3797659 (1974-03-01), Kauffman
patent: 4137157 (1979-01-01), Deister et al.
patent: 4146483 (1979-03-01), Lee
patent: 4303509 (1981-12-01), Lilie
patent: 4732670 (1988-03-01), Nelson
patent: 4906352 (1990-03-01), Nelson
Harrisburg, Inc.
Spitzer Robert
LandOfFree
Stretching mechanism for a screen does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stretching mechanism for a screen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stretching mechanism for a screen will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1244633