Foldaway window crank handle with a handle retention spring

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Handle – handle component – or handle adjunct – Luggage-type

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

74545, B25G 104

Patent

active

054004730

ABSTRACT:
A foldaway casement type window crank handle assembly (10) which utilizes a spring member (50) for retaining the window crank handle (i.e., crank arm 20 and hand grip knob 23) in the extended operating position. The handle assembly is made up of a base member (11) which is mounted to a window frame (40) and houses the window drive mechanism. The base member (11) includes a top surface recess (17) with an aperture (16) therethrough into which the drive shaft (41) of the window mechanism is inserted. A cap member (30) is mounted onto the window drive shaft (41). A crank arm (20) includes a cavity region (24) along the center for receiving the cap member (30). The crank arm (20) is pivotal relative to the cap member (30) about a pivot joint (35) positioned at one end of the cavity region (24). Opposite the pivot joint (35), a hand grip knob (23) is rotatably mounted to the end of the crank arm (20) and is adapted to mate with the top surface contour of the base member (11) when the crank arm (20) is stored in the folded position. A detent spring member (50), slidably engaged within a channel (33) in the cap member (30) below the pivot joint (35), is provided to come into contact with and maintain the crank arm (20) in the extended or operating position. Strain on the spring member (50) is released after the crank arm (20) is pivoted from the extended position toward the folded or inoperative position.

REFERENCES:
patent: 347569 (1894-06-01), Vetter et al.
patent: 1274471 (1918-08-01), Todd
patent: 2524508 (1950-10-01), Barnes
patent: 3007348 (1961-11-01), Barnes
patent: 3044478 (1962-07-01), Russell
patent: 3148913 (1964-09-01), Golde
patent: 3159392 (1964-12-01), Pollak
patent: 3412626 (1968-11-01), Zeigler et al.
patent: 4162805 (1979-07-01), Hirschberger
patent: 4219232 (1980-08-01), Kouth
patent: 4294134 (1981-10-01), Mori et al.
patent: 4390203 (1983-06-01), Lutz et al.
patent: 4466658 (1984-08-01), Furst et al.
patent: 4567692 (1986-02-01), Vogt et al.
patent: 4615236 (1986-10-01), Boots
patent: 4928547 (1990-05-01), Huyer
patent: 5168770 (1992-12-01), Ellis
Canadian Laid Open Patent Application No. 2,087,309 of Nolte, Vetter, Best and Krampotich filed Jan. 14, 1993, laid open Nov. 14, 1993.
"Canadian Certificate of Registration of Industrial Design No. 72607 for a Window Operation Handle and Cover" dated Jun. 3, 1993 of Truth Division of SPX Corporation, Owatonna, Minn.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Foldaway window crank handle with a handle retention spring does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Foldaway window crank handle with a handle retention spring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foldaway window crank handle with a handle retention spring will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2241855

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.