Joints and connections – Interfitted members – Rotary binding cam or wedge
Patent
1996-03-14
1997-12-02
Knight, Anthony
Joints and connections
Interfitted members
Rotary binding cam or wedge
403350, 403109, F16B 204
Patent
active
056928564
ABSTRACT:
An extension handle apparatus includes an elongated sliding member telescopically received within a tubular receiving member, and a lock assembly for releasably locking the sliding member in any selected axial position relative to the receiving member upon relative rotation between the sliding member and the receiving member. The lock assembly includes a cam supported on the sliding member within the receiving member and includes an elongated body defining a longitudinal axis of the cam and possessing a non-circular cross-sectional shape presenting major and minor diameters through the longitudinal axis that are offset from one another by 90. The assembly also includes a shoe of generally C-shaped cross-section supported on the cam body. The shoe includes an axial opening of non-circular cross-sectional shape corresponding to the cross-sectional shape of the cam body, and the opening presents major and minor diameters through the longitudinal axis of the shoe that are offset from one another by 90.degree.. The minor diameter of the opening is about equal to the minor diameter of the cam body, and is smaller than the major diameter of the cam body. Structure is provided for retaining the shoe on the cam body and preventing relative axial shifting movement between the shoe and the cam. The cam body is rotatable relative to the shoe between a locked position in which the major diameter of the cam body is aligned with the minor diameter of the shoe opening, forcing the shoe against the inner surface of the receiving member to lock the sliding member against axial movement, and an unlocked position in which the minor diameter of the cam body is aligned with the minor diameter of the shoe opening, releasing the locking force on the shoe to allow the sliding member to be extended and retracted.
REFERENCES:
patent: 1115057 (1914-10-01), Delaney
patent: 2526415 (1950-10-01), Refsdal
patent: 2599222 (1952-06-01), Bergqvist et al.
patent: 2850308 (1958-09-01), Le Febvre et al.
patent: 2873129 (1959-02-01), Edmundson
patent: 3419293 (1968-12-01), Conrad
patent: 3515418 (1970-06-01), Nielsen, Jr.
patent: 3596946 (1971-08-01), Burton
patent: 3667788 (1972-06-01), Greenwood
patent: 3953138 (1976-04-01), Hine et al.
patent: 4076437 (1978-02-01), Mazzolla
patent: 4238164 (1980-12-01), Mazzolla
patent: 4294560 (1981-10-01), Larkin
patent: 4324502 (1982-04-01), Pickles
patent: 4419026 (1983-12-01), Leto
patent: 4508467 (1985-04-01), Choffin
patent: 4524484 (1985-06-01), Graham
patent: 4619548 (1986-10-01), Kazaoka et al.
patent: 4632597 (1986-12-01), Clausen et al.
patent: 4659125 (1987-04-01), Chuan
patent: 4733681 (1988-03-01), Lee
patent: 4856929 (1989-08-01), Smahlik et al.
patent: 4967484 (1990-11-01), Nosek
patent: 5011104 (1991-04-01), Fang
patent: 5011319 (1991-04-01), Levi et al.
patent: 5346349 (1994-09-01), Giovannetti
patent: 5375938 (1994-12-01), Bartlow
patent: 5417511 (1995-05-01), Warden
patent: 5433551 (1995-07-01), Gordon
patent: 5460458 (1995-10-01), Caceres
patent: 5549407 (1996-08-01), Levi et al.
Guittar Buford
Newman, Jr. Robert D.
Newman, Sr. Robert D.
Knight Anthony
Newman, Jr. Robert D.
Newman, Sr. Robert D.
LandOfFree
Lock assembly for extension handle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lock assembly for extension handle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lock assembly for extension handle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-796315