Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Handle – handle component – or handle adjunct – Luggage-type
Patent
1993-08-27
1995-03-28
Bradley, P. Austin
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Handle, handle component, or handle adjunct
Luggage-type
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.
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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.
Bradley P. Austin
Great Lakes Window Inc.
Mah Chuck Y.
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